27 January 2021
25 January 2021
24 January 2021
#Oracle cloud
| What is included in standard package? |
| What are the many different database deployment model available with oracle cloud? |
| What are the unique features of oracle cloud database backup management offering? |
| What is the difference between normal database and Oracle database cloud service? |
| What are the two service levels available with oracle database cloud service? |
| What are the database related public cloud offerings in oracle cloud? |
| What does provisioning an oracle database mean? |
| What is extension of Terraform HCL configuration files? |
| What configuration formats are supported by terraform? |
| What are the different types of compute instances that come as part of Oracle Cloud infrastructure? |
| What are the components of backend set of a load balancer? |
| What are the resource record types supported by Oracle Cloud Infrastructure DNS service? |
| What is the default output at the end of a terraform apply operation? |
| What are the many different formats of terraform configuration files? |
| What is extension of JSON format machine-readable Terraform configuration files? |
| What are valid REST API operations for DNS Zone in OCI? |
| What is the main use of load balancing policy in an oracle cloud infrastructure? |
| What is the way to tell Terraform what data is important? |
| What load balancer components are optional backend set components? |
| What load balancer components that are mandatory backend set components? |
| What is the use of internet gateway IG in Oracle Cloud infrastructure? |
| What actions are controlled by Oracle cloud infrastructure layer? |
| What are the many different types of load balancing policy in Oracle Cloud Infrastructure environment? |
| What is a budget in oracle cloud infrastructure? How are budgets set in an oracle cloud infrastructure? |
| What are some of the industry standard compliance certification that Oracle Cloud infrastructure is compliant with? |
| What are types of payment method in oracle cloud? |
| What are two relevant storage tiers are available in the object storage service? |
| What is needed to create public load balancer? |
| What are the products within OIC? |
| What are the types of Integration Patterns? |
| What is the difference between Trigger and Invoke Connection? |
| What is the Difference between Rest and SOAP API? |
| What are the pre requisites for OIC to read a Business Event from Oracle SaaS? |
| What is Service Catalog URL of Oracle Fusion SaaS? |
| What is the difference between a template parameter and query parameter? |
| What is feature Flag in OIC? |
| What is Opaque Schema? |
| What is NameSpace in XML file? |
| What is Synchronous and Asynchronous Process? |
| What is Callback functionality in OIC? |
| What is Lookup in OIC? |
| What is iCal Expression? |
| What is the structure of JSON payloads? |
| What do you do when you need to change your source and target connection of a deployed process. |
| What is Base 64 Encoding? |
| What is Publish to OIC and Subscribe to OIC? |
| What is Error handling Features? |
| What is Asserter? |
| What do you understand by Enterprise Architecture? |
| Which component of Oracle cloud provides service console and REST API? |
| Which two relevant storage tiers are available in the object storage service? |
| Which resource is tied to availability zone on Oracle Cloud Infrastructure? |
| Which OCI resource is used to implement a Proof of concept by establishing a secure connection between OCI and datacenter on-premise? |
| Which OCI service is used to deploy containers when a platform has been re-deployed to a microservices based architecture using Docker containers? |
| Which OCI service makes use of Terraform to configure Infrastructure as a code? |
| Which load balancer components are optional backend set components? |
| Which products you have used to integrate and explain your business scenario. |
| Which activity in OIC can be used to trigger Parallel Flow? |
| Which other integration platform you have worked ? What are the key differences compared to OIC? |
| Which Blogs do you follow to keep yourself updated on Oracle OIC? |
| Which books on Oracle OIC you have read or planning to read? |
| How does PSM interact with compute nodes to perform predefined cloud service actions like backup, patching? |
| How is internal communication between PSM and Oracle cloud compute nodes established? |
| How will you provision an oracle database? |
| How will you achieve high availability in Oracle Cloud Infrastructure? |
| How will you parameterize Terraform configurations ? |
| How many subnets are needed to create public load balancer? |
| How are the availability domains in Oracle Cloud infrastructure considered safe and fault tolerant? |
| How to I determine what will be my monthly cloud utilization charges? |
| How do you read a file of size 500 MB in OIC ? |
| How do you Poll for files in OIC? |
| How do you create CSF key ? |
| How to rerun a failed OIC process? |
| When a supply, variables, build are called is the data output created in Terraform? |
| When do you need an Agent to be installed? |
| When should we choose a scheduled orchestration over app driven? |
| Where can you store your oracle database backup in oracle cloud? |
| Where are IAM resources the users and groups created? |
| Who has access to the SSH keys used for PSM communication with compute nodes? |
| In oracle cloud platform as service offering what database management services are included? |
| In Oracle cloud is database maintenance and management to be done only using cloud tools? |
| In oracle cloud infrastructure what is the default encryption used in file storage service? |
| In Oracle cloud infrastructure which among the following are encrypted at rest rather than in transit? |
| In TCP level healthcheck you attempt to make a TCP connection with the backend servers . How will you validate the response? |
| In Oracle Cloud infrastructure what is default behavior of security list? |
| In an Autonomous transaction processing what SQL operations are not available? |
| In an Autonomous transaction processing what SQL operations are available? |
| In Oracle cloud infrastructure what is the default location in which automatic backups of databases in cloud are created? |
| In TCP level healthcheck you send requests to the backend servers at a specific URL. How will you validate the response? |
| In Oracle cloud infrastructure is IP Networking layer of the security control controlling the actions for connecting the client instance to the mount target? |
| In an Autonomous transaction processing which among the following SQL operations are available? |
| In Oracle cloud infrastructure is unix authentication layer of security controlling the actions for connecting the client instance to the mount target? |
| In TCP level health check you send requests to the backend servers at a specific URI. How will you validate the response? |
| In the OIC mapper you do not see your expected fields. What do you do? |
| Are the backend set components in load balancer physical (or) logical? |
| Can you implement RAC in oracle cloud? |
| Can I try oracle cloud for free? |
| Can PSM communication with compute nodes be audited? |
| Can you tell terraform the important data using extracts? |
| Can you transfer data from onsite to oracle cloud using internet? |
| Describe the structure of the WSDL? |
| Did you use BIP web service for integrations with fusion SaaS? |
| Does boot volumes allow you to create significantly faster custom images of running VMs without having to reboot? |
| Give details on some oracle cloud terminologies :- |
| Give some invalid REST API operations for DNS Zone in OCI :- |
| Have you Used Adapters ? Why and when do you use Adapter instead of direct Rest or SOAP Call? |
| I need a process in OIC which returns a payload. Please explain the Design. |
| Implementing Oracle Integration Cloud Service |
| Is my backup safe and secure while being stored in oracle cloud? Explain? |
| Is UpdateZoneRecord a valid REST API operation? |
| Is AddZone a valid REST API operation? |
| Is route hash a load balancing policy in an oracle cloud infrastructure environment? |
| Is OIC PaaS , SaaS or IaaS ? |
| Is editing XSL mappings allowed ? How you ever modified XSL mappings in OIC? |
| Is there any message payload limit during processing in OIC? If yes how much and how do you handle larger files? |
| Is there any message payload limit during processing in OIC? If yes how much and how do you handle |
| larger files? |
| Please explain the structure of Rest API metadata . |
| State the difference between VM standard and VM dense IO shapes? |
| There are many different cloud services. Why should I choose oracle cloud over others? |
| To tell Terraform what data is important outputs are the way to go. When is this data outputted? |
| Types of Certificates in OIC ? |
| You are opting for standard package. Do you need to pay extra for TDE? |
| You have chosen to make a purchase under universal credit services standard package. What cost do you need to pay upfront? |
| You have chosen to BYOL standard package. What is upfront cost? |
| You want to point a hostname to an IPv4 address. Which DNS resource record type will you make use of to accomplish this? |
| You want to launch an instance in Oracle Cloud Infrastructure. What are all the required parameters? |
| You are in process of designing a load balancer to accept incoming traffic. What configurations must be made for this? |
| You are given an old integration IAR to be imported and when you do you get a function error, How do you fix it? |
| You need a custom repeatable logic in OIC to be used in multiple processes. How to achieve? |
| Can I have html form property without associated getter and setter formbean methods? |
| Can we handle exceptions in Struts programmatically? |
| Does Struts2 action and interceptors are thread safe? |
| For a single Struts application, can we have multiple struts-config.xml files? |
| Is Struts Framework part of J2EE? |
| Is Struts thread safe? |
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Oracle cloud
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#IBM_Cloud
| What is IBM Bluemix and What it does? |
| What are the features of IBM Bluemix? |
| What is the IBM Cloud? |
| What is IBM Cloud catalog? |
| What is access management? |
| What is IBM Cloud Identity and Access Management (IAM)? |
| What is IBM Product Security Incident Response Team (PSIRT)? |
| What are Regions in IBM Cloud? |
| What is IBM Cloud resilience? |
| What is Cloud Integration API? |
| What are the different versions of IBM Cloud Private? |
| What are the features of IBM Cloud Private – Community Edition? |
| What are the features of IBM Cloud Private – Cloud Native? |
| What are the features of IBM Cloud Private – Enterprise? |
| What are Cloud Resource Names (CRNs)? |
| What is anti-affinity? |
| What is BLU Acceleration? |
| What is blue-green deployment? |
| What is certificate signing request (CSR)? |
| What is heavy API call? |
| What is Lightweight Directory Access Protocol (LDAP)? |
| How does Bluemix work? |
| How does the IBM Cloud console work? |
| How does Cloud Foundry work with IBM Cloud? |
| Can you describe CRN format? |
#Allibaba cloud
| What is Elastic Compute Service (ECS)? |
| What are the benefits of Elastic Compute Service (ECS)? |
| What is Dedicated Host (DDH) in Alibaba cloud? |
| What is E-HPC? |
| What is Container Service? |
| What is Elastic Container Instance in Alibaba cloud? |
| What is Container Registry? |
| What is Auto Scaling. |
| What are the benefits of Auto Scaling? |
| What is OSS (Object Storage Service)? |
| Explain Alibaba Cloud. |
| Explain Batch Compute in Alibaba Cloud. |
| Explain Web App service and Function Compute. |
| Describe Simple Application Server. |
| Describe the Container Service for Kubernetes? |
21 January 2021
#Scala
| What is Scala? |
| What is Statically-Typed Language and What is Dynamically-Typed Language? |
| What is the difference between statically typed and dynamically typed languages? |
| What are the major advantages of Scala Language? Are there any drawbacks of Scala Language? |
| What is the Main drawback of Scala Language? |
| What is the main motto of Scala Language? |
| What are the popular JVM Languages available now? |
| What is default access modifier in Scala?Does Scala have ?public? keyword? |
| What is ?Type Inference? in Scala? |
| What is the relationship between Int and RichInt in Scala? |
| What is Nothing in Scala? What is Nil in Scala? What is the relationship between Nothing and Nil in Scala? |
| What is Null in Scala? What is null in Scala? What is difference between Null and null in Scala? |
| What is Unit in Scala? What is the difference between Java?s void and Scala?s Unit? |
| What is the difference between val and var in Scala? |
| What is REPL in Scala? What is the use of Scala?s REPL? How to access Scala REPL from CMD Prompt? |
| What are the Scala Features? |
| What is ?Application? in Scala or What is Scala Application? What is ?App? in Scala? What is the use of Scala?s App? |
| What is an Expression? What is a Statement? Difference between Expression and Statement? |
| What is the difference between Java?s ?If..Else? and Scala?s ?If..Else?? |
| What is the difference between Function and Method in Scala? |
| What is PreDef in Scala? |
| What is Primary Constructor? What is Secondary or Auxiliary Constructor in Scala? |
| What is the use of Auxiliary Constructors in Scala?Please explain the rules to follow in defining Auxiliary Constructors in Scala? |
| What are the differences between Array and ArrayBuffer in Scala? |
| What is case class? What is case object? What are the Advantages of case class? |
| What is the difference between Case Object and Object(Normal Object)? |
| What is the usage of isInstanceOf and asInstanceOf methods in Scala? Is there anything similar concept available in Java? |
| What is the difference between ?val? and ?lazy val? in Scala? What is Eager Evaluation? What is Lazy Evaluation? |
| What is the Relationship between equals method and == in Scala? Differentiate Scala?s == and Java?s == Operator? |
| What is Diamond Problem? How Scala solves Diamond Problem? |
| What is the use of ?object? keyword in Scala? How to create Singleton objects in Scala? |
| What is apply method in Scala? What is unapply method in Scala? What is the difference between apply and unapply methods in Scala? |
| What is the main design decision about two separate keywords: class and object in Scala? How do we define Instance members and Static members in Scala? |
| What is object in Scala? Is it a singleton object or instance of a class? |
| What is a Companion Object in Scala? What is a Companion Class in Scala? What is the use of Companion Object in Scala? |
| What is Range in Scala? How to create a Range in Scala? |
| What are the major differences between Scala?s Auxiliary constructors and Java?s constructors? |
| What is the use of ?yield? keyword in Scala?s for-comprehension construct? |
| What is guard in Scala?s for-comprehension construct? |
| What is the current latest version of Scala?What is the major change or update in Scala 2.12? |
| What is Option in Scala? What are Some and None? What is Option/Some/None Design Pattern in Scala? |
| What is Either in Scala? What are Left and Right in Scala? Explain Either/Left/Right Design Pattern in Scala? |
| What is the equivalent construct of Scala?s Option in Java SE 8? What is the use of Option in Scala? |
| What are the Advantages of Functional Programming (FP) or Advantages of Pure Functions? |
| What are the Popular Scala-Based Frameworks to develop RESTful Web Services or REST API? |
| What is the best Framework to generate REST API documentation for Scala-based applications? |
| What is the best tool to develop Play/Scala applications to persist data in MongoDB NoSQL data store? |
| What is the best language to use with Play framework: Scala or Java? |
| What are the available Build Tools to develop Play and Scala based Applications? |
| What is SBT? What is the best Build Tool to develop Play and Scala Applications? |
| What are the available Unit Testing, Functional Testing and/or BDD Frameworks for Play and Scala Based applications? |
| What is the best Code-coverage tool available for Play and Scala based applications? |
| What is the best Scala style checker tool available for Play and Scala based applications? |
| What is the default Unit and Functional Testing Framework for Play? What is the default Build Tool for Play? What is the Default Template Engine for Play? What is the built-in Web Server available in Play Framework? |
| What is an Anonymous Function In Scala? What is a Function Literal in Scala? What are the advantages of a Anonymous Function/Function Literal in Scala? |
| What is an Higher-Order Function (HOF)? |
| What are the differences between Case class and Normal Class? |
| What are the advantages of Play/Scala stack to develop web applications? |
| What is call-by-name? Does Scala and Java support call-by-name? What is the difference between call-by-value and call-by-name function parameters? |
| What are the Java?s OOP constructs not supported by Scala? What are the Scala?s OOP constructs not supported by Java? What are the new OOPs constructs introduced by Scala, but not supported by Java? |
| What are the popular MVC frameworks for Scala Language to develop Web Applications? |
| What are major differences between Java-Based and Scala-Based Maven Project?s structure? |
| What is Extractor in Scala? What is the difference between Constructor and Extractor in Scala? What is the use of Extractor in Scala? |
| What is the use of ????? in Scala-based Applications? |
| What is the difference between :: and #:: in Scala? What is the difference between ::: and #::: in Scala? |
| Explain the main difference between List and Stream in Scala Collection API? How do we prove that difference? When do we choose Stream? |
| Why Scala does NOT have ?static? keyword? What is the main reason for this decision? |
| Why Scala is better than Java? What are the advantages of Scala over Java (Java 8)? Compare to Java What are the major advantages or benefits of Scala? |
| Which IDEs support Play and Scala-Based Applications Development and how? |
| How do we implement loops functionally? What is the difference between OOP and FP style loops? |
| How many public class files are possible to define in Scala source file? |
| How many operators are there in Scala and Why? |
| How do you prove that by default, Case Object is Serializable and Normal Object is not? |
| How to define Factory methods using object keyword in Scala? What is the use of defining Factory methods in object? |
| How does it work under-the-hood, when we create an instance of a Class without using ?new? keyword in Scala? When do we go for this approach? |
| How do we declare a private Primary Constructor in Scala? How do we make a call to a private Primary Constructor in Scala? |
| How to implement interfaces in Scala? |
| How many values of type Nothing have in Scala? |
| How many values of type Unit have in Scala? |
| How Scala solves Inheritance Diamond Problem automatically and easily than Java 8? |
| How Scala supports both Highly Scalable and Highly Performance applications? |
| When compare to Normal Class, What are the major advantages or benefits of a Case-class? |
| Difference between Scala?s Int and Java?s java.lang.Integer? |
| Difference between Array and List in Scala? |
| Difference between Scala?s Inner class and Java?s Inner class? |
| In FP, What is the difference between a function and a procedure? |
| In Scala, Pattern Matching follows which Design Pattern? In Java, ?isinstanceof? operator follows which Design Pattern? |
| Does Scala support all Functional Programming concepts? Does Java 8 support all Functional Programming concepts? |
| Does Scala support Operator Overloading? Does Java support Operator Overloading? |
| Does a Companion object access private members of it?s Companion class in Scala? |
| If I want to become a Fullstack Scala Developer, which technology stack I should learn? |
| Is it a Language or Platform? Does it support OOP or FP? Who is the father of Scala? |
| Is Scala Statically-Typed Language? |
| Is Scala a Pure OOP Language? Is Java a Pure OOP Language? |
| Is Scala an Expression-Based Language or Statement-Based Language? Is Java an Expression-Based Language or Statement-Based Language? |
| Like Java?s java.lang.Object class, what is the super class of all classes in Scala? |
| Like Java, what are the default imports in Scala Language? |
| Like Hibernate for Java-based applications, What are the Popular ORM Frameworks available to use in Play/Scala based applications? |
| Mention Some keywords which are used by Java and not required in Scala? Why Scala does not require them? |
| Popular clients who are using Play and Scala to develop their applications? |
| Tell me some features which are supported by Java, but not by Scala and Vice versa? |
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19 January 2021
#Oracle
| What is Database's schema objects? |
| What is a SYSTEM tablespace and when it is created? |
| What is an Oracle table? |
| What is bulk copy or BCP in Oracle? |
| What is the relationship among database, tablespace and data file? |
| What is a snapshot in Oracle database? |
| What is the difference between hot backup and cold backup in Oracle? |
| What is library cache? |
| What is data dictionary cache? |
| What is save point in Oracle database? |
| What is hash cluster in Oracle? |
| What is Tables ? |
| What is Views ? |
| What is Indexes ? |
| What is Synonyms ? |
| What is the difference between pre-select and pre-query? |
| What is Form module? |
| What is Menu module? |
| What is Pl/SQL Library module? |
| What is Object Library module? |
| What is the usage of ANALYZE command in Oracle? |
| What is SUBQUERIES ? |
| What is Outer Join? |
| What is Equi-join ? |
| What is the usage of control file in Oracle? |
| What is a synonyms? |
| What is the usage of synonyms? |
| What is the difference between TRANSLATE and REPLACE in Oracle? |
| What is the usage of Save Points in Oracle database? |
| What is the difference between post-database commit and post-form commit? |
| What is Logical backup in Oracle? |
| What is the meaning of recursive hints in Oracle? |
| What is the use of GRANT option in IMP command? |
| What is the use of ROWS option in IMP command? |
| What is the use of INDEXES option in IMP command? |
| What is the use of IGNORE option in IMP command? |
| What is the use of SHOW option in IMP command? |
| What is the use of FILE param in IMP command? |
| What is RAW datatype? |
| What is the use of NVL function? |
| What is COALESCE function? |
| What is BLOB datatype? |
| What is the difference between TRANSLATE and REPLACE? |
| What is the usage of Merge Statement? |
| What is NULL value in oracle? |
| What is USING Clause and give example? |
| What is key preserved table? |
| What is WITH CHECK OPTION? |
| What is the use of Aggregate functions in Oracle? |
| What is a sub query and what are the different types of subqueries? |
| What is Correlated sub query? |
| What is Non-Correlated subquery? |
| What is cross join? |
| What is Varray ? |
| What is the difference between rename and alias? |
| What is a View? |
| What is a cursor variable? |
| What is the use of %FOUND |
| What is the use of %NOT FOUND |
| What is the use of %ISOPEN |
| What is the use of %ROWCOUNT |
| What is an integrity constraint? |
| What is an ALERT? |
| What is hash cluster? |
| What is NULL constraints? |
| What is NOT NULL constraints? |
| What is CHECK constraints? |
| What is DEFAULT constraints? |
| What is difference between SUBSTR and INSTR? |
| What is the parameter mode that can be passed to a procedure? |
| What is the difference between $ORACLE_BASE and $ORACLE_HOME? |
| What is the fastest query method to fetch data from the table? |
| What is the maximum number of triggers that can be applied to a single table? |
| What is the data type of DUAL table? |
| What is difference between Cartesian Join and Cross Join? |
| What are the various Oracle database objects? |
| What are the different types of modules in Oracle forms? |
| What are the different types of synonyms? |
| What are the different types of database objects? |
| What are the limitations of CHECK constraint? |
| What are the extensions used by Oracle reports? |
| What are nested tables? |
| What are temporal data types in Oracle? |
| What are cursor attributes? |
| What are SET operators? |
| What are the attributes of Cursor? |
| What are the various constraints used in Oracle? |
| What are the different Oracle Database objects? |
| What are the differences between LOV and List Item? |
| What are privileges and Grants? |
| What types of joins are used in writing SUBQUERIES? |
| How do you store pictures in a database? |
| How do you find current date and time in Oracle? |
| How do we represent comments in Oracle? |
| How do we display rows from the table without duplicates? |
| How do we create privileges in Oracle? |
| How do we get field details of a table? |
| How to convert a string to a date in Oracle database? |
| How to display row numbers with the records? |
| How to display employee records who gets more salary than the average salary in the department? |
| Can we store pictures in the database and if so, how it can be done? |
| Can you create a synonym without having a table? |
| Difference between varchar and varchar2 data types? |
| How can we delete duplicate rows in a table? |
| How can we view last record added to a table? |
| How many memory layers are in the Oracle shared pool? |
| In which language Oracle has been developed? |
| What do you understand by Redo Log file mirroring? |
| What do you mean by GROUP BY Clause? |
| What is DML? |
| What will be the syntax to find current date and time in format "YYYY-MM-DD"? |
| Whether any commands are used for Months calculation? If so, What are they? |
| What are Schema Objects? |
| What is a Table? |
| What is a View? |
| What is an Index? |
| What is a Data file? |
| What is the difference between UNIQUE or PRIMARY KEY Constraint? |
| What is PL/SQL ? |
| What is the basic structure of PL/SQL ? |
| What is the difference between %ROWTYPE and TYPE RECORD ? |
| What is a cursor ? Why cursor is required ? |
| What is Raise_application_error ? |
| What is the difference between a PROCEDURE and FUNCTION ? |
| What is Overloading of procedures ? |
| What is a package ? What are the advantages of package ? |
| What is difference between TRUNCATE and DELETE? |
| What is a join? Explain the different types of joins? |
| What is a Subquery? |
| What is correlated sub-query? |
| What are the Usages of SAVEPOINTS? |
| What is ROWID? |
| What is PRIMARY KEY, UNIQUE KEY, FOREIGN KEY? |
| What is ON DELETE CASCADE? |
| What is difference between CHAR and VARCHAR2? What is maximum SIZE allowed for each type? |
| What will be returned from SIGN(ABS(NVL(-32,0)))? |
| What is database? |
| What is a transaction ? |
| What is implicit cursor and how is it used by Oracle ? |
| What are the various types of parameter modes in a procedure ? |
| What are the constructs of a procedure, function or a package ? |
| What are the parts of a database trigger ? |
| What are the various types of database triggers ? |
| What is the advantage of a stored procedure over a database trigger ? |
| What are cascading triggers? What is the maximum no of cascading triggers at a time? |
| What are mutating triggers ? |
| What are constraining triggers ? |
| What is Oracle database?s physical and logical structure ? |
| What is the use of Control files ? |
| What is the use of Data Dictionary ? |
| What are the states of a rollback segment ? What is the difference between partly available and needs recovery ? |
| What is the maximum no.of columns a table can have ? |
| What are the various types of RollBack Segments ? |
| What are the disadvantages of SQL ? |
| What is the difference between a view and a synonym ? |
| What is the difference between foreign key and reference key ? |
| What is a package cursor ? |
| What are snap shots and views |
| Explain the two types of cursors ? |
| Explain UNION, MINUS, UNION ALL, INTERSECT? INTERSECT returns all commmon rows selected by both queries. |
| Explain the difference between trigger and stored procedure. |
| Why Create or Replace and not Drop and recreate procedures ? |
| How to store the results of a query into a file? |
| How to create a copy of EMP table without any data? |
| How to delete the 10th record of EMP table? |
| How can I protect my PL/SQL source code? |
| How can you avoid indexes ? |
| When to create indexes ? |
| Difference between SUBSTR and INSTR? |
| Can one read/write files from PL/SQL? |
| Can one use dynamic SQL within PL/SQL? OR Can you use a DDL in a procedure ? How ? |
| Can you pass parameters in packages ? How ? |
| Can you increase the size of a tablespace ? How ? |
| Can you pass a parameter to a cursor ? |
| Delete those employees who joined the company 10 years back from today? |
| Differences between DATE and TIMESTAMP in Oracle |
| Display the name of employees who joined on the same date? |
| Find out the number of employees whose salary is greater than their manager salary? |
| Is there a PL/SQL Engine in SQL*Plus? |
| Select the count of employees in each dept where count is greater than 3? |
| What is RAW datatype? |
| What is the use of NVL function? |
| What are nested tables? |
| What is COALESCE function? |
| What is BLOB datatype? |
| What is DML? |
| What is the difference between TRANSLATE and REPLACE? |
| What is the usage of Merge Statement? |
| What is NULL value in oracle? |
| What is USING Clause and give example? |
| What is key preserved table? |
| What is WITH CHECK OPTION? |
| What is the use of Aggregate functions in Oracle? |
| What do you mean by GROUP BY Clause? |
| What is a sub query and what are the different types of subqueries? |
| What is cross join? |
| What are temporal data types in Oracle? |
| What is VArray? |
| What is the difference between rename and alias? |
| What is a View? |
| What is a cursor variable? |
| What are cursor attributes? |
| What are SET operators? |
| What are the attributes of Cursor? |
| What is an integrity constraint? |
| What is an ALERT? |
| What is hash cluster? |
| What is difference between SUBSTR and INSTR? |
| What is the parameter mode that can be passed to a procedure? |
| What are the different Oracle Database objects? |
| What are the differences between LOV and List Item? |
| What are privileges and Grants? |
| What is the difference between $ORACLE_BASE and $ORACLE_HOME? |
| What is the fastest query method to fetch data from the table? |
| What is the maximum number of triggers that can be applied to a single table? |
| What is the data type of DUAL table? |
| What is difference between Cartesian Join and Cross Join? |
| What are packages in pl SQL and also explain its advantages? |
| What are the various constraints used in Oracle? |
| What do you mean by CDB and PDB in Oracle 12c? |
| What is a trigger and what are its types in Oracle? |
| What is an Oracle and why it is used? |
| What is Oracle join syntax? |
| What is Oracle latest version? |
| What is PL SQL and why it is used for? |
| What is the difference between primary key and unique key and foreign key in Oracle? |
| What is the difference between substr and instr function in Oracle? |
| What is the dynamic SQL in Oracle? |
| What is the new features in Oracle 12c? |
| What is translate in Oracle? |
| Write a syntax for update query in Oracle? |
| Write a trigger example in Oracle? |
| Explain Oracle insert into command? |
| Explain self joins in oracle? |
| Explain the difference between delete and truncate? |
| Explain the difference between replace() and translate() functions in Oracle? |
| Explain the difference between SAP and Oracle? |
| Explain the difference between SQL and Oracle? |
| Explain the features of Oracle? |
| Explain the truncate in Oracle? |
| How do we represent comments in Oracle? |
| How do we display rows from the table without duplicates? |
| How do we create privileges in Oracle? |
| How do we get field details of a table? |
| How can we delete duplicate rows in a table? |
| How to display row numbers with the records? |
| How can we view last record added to a table? |
| How to display employee records who gets more salary than the average salary in the department? |
| How to convert raw data type into text in Oracle? Explain |
| How to execute the package in Oracle? |
| Who developed Oracle & when? |
| Difference between varchar and varchar2 data types? |
| In which language Oracle has been developed? |
| Can we store pictures in the database and if so, how it can be done? |
| Please explain compound trigger in Oracle? |
| Please explain drop constraint Oracle? |
| Please explain joins in oracle? |
| Please explain oracle data types with examples? |
| Please explain oracle left join with an example? |
| Whether any commands are used for Months calculation? If so, What are they? |
| Oracle | |||||||||
| Question | Option A | Option B | Option C | Option D | |||||
|---|---|---|---|---|---|---|---|---|---|
| Which prefixes are available to Oracle triggers? | :new | Both :new and :old | :old | Neither :new nor :old | |||||
|
|
#WAS - Websphere
| What are the usual issues that a user would potentially experience? |
| What is a virtual host? |
| What is garbage collection? |
| What is node federation? |
| What is nose sync? |
| What is Ripplestart? |
| What is shared libraries? |
| What is the full form of FFDC? |
| What is the full form of PMT? |
| What is cell |
| What is fix pack. |
| What is default WAS port. |
| Which are the two ways to connect the webserver to WAS? |
| Which is the default language for scripting in WebSphere? |
| How does one make WebSphere autostart when the server is rebooted? |
| When the node agent is down could the node be synced at that time? |
| Difference - vertical vs horizontal cluster. |
| In a single JVM is it possible to deploy more than one application? |
| In front of WAS is there a web server needed? |
| If the DMGR is down could the applications run without any issues? |
| Is it possible to change the context root for the deployed application? |
| State the available WebSphere editions. |
| State the entire registry supported in WebSphere. |
| State the kinds of files which can be deployed into WebSphere. |
| State the three ways to deploy an application in WebSphere. |
| With WebSphere which are the various databases that can be supported? |
#Tomcat
| What is Tomcat Coyote ? |
| What is Tomcat? |
| What all services are provided by Tomcat? |
| What are the steps to enable SSL in web application deployed on Tomcat? |
| What is the directory structure of a web application deployed on Tomcat? |
| What are the steps to configure clustering in Tomcat server? |
| What is Apache Tomcat Server ? |
| What are the important directories of Apache Tomcat Web Server ? |
| What is Tomcat Architecture ? |
| What type of connectors used in Tomcat ? |
| What services does provided by Tomcat Webserver ? |
| What is Valve in Tomcat Server ? |
| What are type of Valve in Tomcat ? |
| What is Jasper in Tomcat Server ? |
| Explain the concepts of Tomcat Servlet Container. |
| Why is Tomcat not an application server? |
| How will you clear the cache of Tomcat server? |
| How will you create a database connection pool in Tomcat server? |
| How do you define welcome file list? |
| How do you create multiple virtual hosts? |
| How would you set up tomcat for remote debugging? |
| How do I configure Tomcat to work with IIS and NTLM? |
| How do I override the default home page loaded by Tomcat? |
| How do I enable Server Side Includes (SSI)? |
| How do I use DataSources with Tomcat? |
| Will you classify Tomcat as web server or application server? |
| Suppose there is a clash between the version of library being shipped with your application and the library of Tomcat, How will you resolve it? (Take example of Log4J) |
| Suppose when we are starting startup.bat file of Tomcat server it is not started. DOS window appears for a Second only. What we need do? |
#NGINX
| What is the advantage of using a “reverse proxy server”? |
| What is Nginx? Mention some special features of Nginx? |
| What is ngx_http_upstream_module is used for? |
| What is C10K problem? |
| What is the purpose of –s with Nginx Server? |
| What is the difference between Nginx and Apache? |
| What is the best usage of Nginx server? |
| What is the Master and Worker Processes in Nginx Server? |
| What is the use of stub_status and sub_filter directives? |
| How Nginx can handle HTTP requests? |
| How you can start Nginx through a different port other than 80? |
| How you can get the current time in Nginx? |
| How to add modules in Nginx Server? |
| In Nginx how you can prevent processing requests with undefined server names? |
| In Nginx, explain how you can keep double slashes in URLs? |
| Does Nginx support compress the request to the upstream? |
| is it possible to replace Nginx errors like 502 error with 503? |
- NGINX is pronounced as "engine-ex".
- It is an open-source, fast, lightweight and high-performance web server that can be used to serve static files.
- It has considered as the popular web server behind the Apache web server and Microsoft's IIS.
- In its initial release, NGINX functioned for HTTP web serving. Today, however, it also serves as a reverse proxy server for HTTP, HTTPS, SMTP, IMAP, POP3 protocols, on the other hand, it is also used for HTTP load balancer, HTTP cache, and email proxy for IMAP, POP3, and SMTP.
- It improves content and application delivery, improves security, and facilitates scalability and availability for the busiest websites on the internet.
- In short, we can say that Nginx is just a kind of software that is used in web servers to serve concurrent requests.
- Previously we used to install Apache in web servers to handle these functions, but as the world, in growing and demanding more things at one time, the term concurrency comes into the world and nginx launched for the same thing.
- Nginx was created by Igor Sysoev, with its 1st public release on October 2004 as an attempt to answer the C10k problem. Where C10k is the challenge of managing 10,000 connections at the same time. Today there are even more connections that web servers have to handle. Because of this reason, nginx offers event-driven and asynchronous architecture. This feature makes nginx as the most reliable servers for scalability and speed.
- Some high profile companies using Nginx include IBM, Google, Atlassian, Autodesk, GitLab, DuckDuckGo, T-Mobile, Microsoft, Adobe, Salesforce, VMware, LinkedIn, Cisco, Twitter, Apple, Intel, Facebook, and many more.
#IIS
| What are the new features in IIS 8.5? |
| What is a virtual directory? |
| What are the log files? |
| What is the purpose of the Application Pool in IIS? |
| What are Kernel Mode and User Mode in IIS? |
| What is the Internet Information Service (IIS)? |
| What is the DefaultAppPool in IIS? |
| What are the WWW Publishing Service (W3SVC) and Windows Activation Process (WAP)? |
| What is the purpose of App pool recycling in IIS? |
| What are the functionalities of ISAPI filters in IIS? |
| What is the functionality of HTTP.SYS? |
| What is IUSR_MachineName in IIS? |
| What purpose does IIS Metabase serve in IIS? |
| What are the different native modules of IIS? |
| What are the benefits of modular architecture in IIS7? |
| What does Componentization mean in IIS? |
| What extra care has to be taken while installing a native module? |
| What are the advantages of AppCmd in IIS7? |
| What does a typically shared hosting environment consist of in IIS? |
| What happens if the kernel-mode cache is turned off? |
| What are the advantages of Componentization? |
| What is an Application Host. config in IIS? |
| Which are the protocols that IIS supports? |
| Which are the functions that a protocol listener serves in IIS? |
| Which are the subsections of User mode? |
| How can you host a site on IIS? |
| How do you make and restore backups of global server configurations in IIS? |
| How do you ensure content security in IIS? |
| HTTP.SYS is the subsection of which mode? |
| With which tool, you can debug IIS remotely? |
12 January 2021
#ETL
| Assume we have employees table (around 100) record. write a query to find the which employess as joined first in the organisation? |
| Can there be sub-steps for each of the ETL steps? |
| Compose a question to refreshed employess somewhere in the range of 150 and 180 compensation dependent on office |
| Difference - ETL Testing vs Database Testing? |
| Difference - ETL tools vs OLAP tools? |
| Difference - ETL vs ELT. |
| Difference - lpad vs rpad |
| Difference - Manual Testing vs ETL Testing? |
| Difference - OLAP tools vs ETL tools ? |
| Difference - Power Mart vs Power Center? |
| Difference - PowerCenter vs PowerMart? |
| Difference - The data warehouse vs data mining? |
| Difference among rank and thick position? |
| Does PowerMart provide connections to ERP sources? |
| Explain the concept of Extraction, Transformation, and Loading? |
| Explain the use of Lookup Transformation? |
| Explain these terms Session, Worklet, Mapplet and Workflow ? |
| How are the tables analyzed in ETL? |
| How can the mapping be fine-tuned in ETL? |
| How does the operational data store work? |
| How is ETL used in Data Migration Project? Explain it. |
| How many steps are there in an ETL process? |
| How to check whether table has been loaded with data are not? |
| How to chk is there any duplicate records is exists in the table? |
| How to chk the Primary Key? |
| How to make another table from effectively existing table with any information make table tablename as |
| How to make another table from effectively existing table with no information |
| How we use ETL in Data Warehousing? |
| How we use ETL in third party management? |
| How you can extract SAP data using Informatica? |
| How you will display all the columns in the table? |
| If there are ten thousand records in a source system, how do we ensure that all ten thousand are loaded to the target without any function |
| In case you have non-OLEDB (Object Linking and Embedding Database) source for the lookup what would you do? |
| In what case do you use dynamic cache and static cache in connected and unconnected transformations? |
| list few ETL tool available in the market |
| Mention what are the types of data warehouse applications and what is the difference between data mining and data warehousing? |
| Mention what is the advantage of using DataReader Destination Adapter? |
| Select all the employees where third charcter of first_name is ‘a' |
| Using SSIS ( SQL Server Integration Service) what are the possible ways to update table? |
| What are Cubes and OLAP Cubes? |
| What are ETL tester responsibilities? |
| What are initial load and full load? |
| What are joiner and lookup? |
| What are Schema Objects? |
| What are the characteristics of Data Warehouse? |
| What are the characteristics of snapshots? |
| What are the differences between connected and unconnected lookups in ETL? |
| What are the differences between data warehousing and data mining? |
| What are the differences between ETL and BI tools? |
| What are the differences between Unconnected and Connected lookup? |
| What are the ETL bugs? |
| What are the ETL testing operations includes? |
| What are the ETL tools available in the market? |
| What are the ETL Tools? |
| What are the joins accessible in sql |
| What are the names of the layers in ETL? |
| What are the smoke test can be performed on the ETL Testing? |
| What are the steps followed in ETL testing process? |
| What are the steps followed to choose the ETL process? |
| What are the steps involved in an ETL process? |
| What are the three tiers in ETL? |
| What are the types of Data Warehouse systems? |
| What are the types of partitions in ETL? |
| What are the various tools used in ETL? |
| What are various set operators available in SQL? |
| What are views? |
| What does the ODS in ETL generate? |
| What factless fact schema is and what is Measures? |
| What is a 3-tier system in ETL? |
| What is a Data Mart? |
| What is a dimension table and how it is different from the fact table? |
| What is a mapping, Session, Worklet, and Mapplet? |
| What is a materialized view? |
| What is a session in ETL? |
| What is an ETL process? |
| What is BI? |
| What is Bus Schema? |
| What is data purging? |
| What is data source view? |
| What is ETL mapping sheet? Define its significance. |
| What is ETL Pipeline? |
| What is ETL Testing and how its not the same as database Testing? |
| What is fact? What are the types of facts? |
| What is full load and incremental or refresh load? |
| What is Grain of Fact? |
| What is mapping in ETL? |
| What is a materialized view log? |
| What is incremental load? |
| What is operational data store? |
| What is snapshots? |
| What is Worklet in ETL? |
| What is Operation Data Source? |
| What is partitioning, hash partitioning and round robin partitioning? |
| What is the benefit of increasing the number of partitions in ETL? |
| What is the contrast among subquery and correclated subquery |
| What is the data extraction phase in ETL? |
| What is the Data Pipeline? |
| What is the need for ETL Testing? |
| What is the responsibility of ETL tester? |
| What is the staging place in the ETL Testing? |
| What is the three-layer architecture of an ETL cycle? |
| What is the transformation in ETL Testing? |
| What is the use of dynamic cache and static cache in transformation? |
| What is the use of Mapplet in ETL? |
| What is tracing level and what are the types? |
| What is transformation? |
| What is Workflow in ETL? |
| What staging area is and what is the purpose of a staging area? |
| When are the tables in ETL analyzed? |
| When we need the staging area in the ETL process? |
| Where the user use ETL concepts? Explain it. |
| Which partition is used to improve the performances of ETL transactions? |
| With which apps can PowerCenter be connected? |
| Write a query to calcualted how many employees on each department? |
| Write a query to display all the employees salary in 10 digit |
| Write a query to find all the employees working in deptartment 10,50,60 |
| Write a query to find all the jobs for which employees are joined in the current year. |
| Write a query to find number of employees under each manager |
| Write a query to match abc=ABC |
| Write a query to updated all the employess salary base don department |
| Write a question to discover every one of the representatives who have participated in the long stretch of Jan |
| Write a question to discover how long representatives has functioned from is hire_date |
| Write a question to discover the which supervisor has overseeing in excess of 5 representatives. |
| Write a question to number of month representatives has working in organization |
| Write a question to show every one of the workers where initial 3 letter of first_name is bab |
| Write an inquiry to discover total of salries of departement_id is 50000 |
| Write an inquiry to discover what number of workers has joined following 15 of the present month |
| Write the query to find second max salary in each department |
ETL - Extract Transform and Load - FAQ
- ETL provides a method of moving the data from various sources into a data warehouse.
- Extract: Extract is the process of fetching (reading) the information from the database. At this stage, data is collected from multiple or different types of sources.
- Transform: Transform is the process of converting the extracted data from its previous form into the required form. Data can be placed into another database. Transformation can occur by using rules or lookup tables or by combining the data with other data.
- Load: Load is the process of writing the data into the target database.
- In the first step extraction, data is extracted from the source system into the staging area.
- In the transformation step, the data extracted from source is cleansed and transformed .
- Loading data into the target datawarehouse is the last step of the ETL process.
- It helps companies to analyze their business data for taking critical business decisions.
- Transactional databases cannot answer complex business questions that can be answered by ETL example.
- A Data Warehouse provides a common data repository
- As data sources change, the Data Warehouse will automatically update.
- Well-designed and documented ETL system is almost essential to the success of a Data Warehouse project.
- Allow verification of data transformation, aggregation and calculations rules.
- ETL process allows sample data comparison between the source and the target system.
- ETL process can perform complex transformations and requires the extra area to store the data.
- ETL helps to Migrate data into a Data Warehouse. Convert to the various formats and types to adhere to one consistent system.
- ETL is a predefined process for accessing and manipulating source data into the target database.
- ETL in data warehouse offers deep historical context for the business.
- It helps to improve productivity because it codifies and reuses without a need for technical skills.
ETL testing
- It is performed for data extraction, transformation and loading for BI reporting.
- It used for information, forecasting, and analytical reporting.
- It contains historic data that cannot be used in business flow environment.
- It using multidimensional method.
- It is applied to OLAP systems.
- It uses the de-normalized data with fewer joins, more indexes, and aggregations.
- It verifies if table relations join and keys are preservers during the transformation.
- It identifies data sources and requirements.
- It validate of data movement from source to the target system.
- It does data count verification in the source and target system.
- Tools - QuerySurge, Informatica, etc. tools are used.
Database Testing
- It is performed to validate and integrate the data.
- It focuses on verification of the column in a table that has valid data values.
- It verifies if the data is missing in the column. Here, we check that are there any null values in columns which should have a valid value?
- To verify whether the primary or foreign key is maintained, database testing is used.
- We verify the accuracy of data in columns.
- This testing is used to integrate the data from multiple applications and server impact.
- It contains the transactional system where the flow of business occurs.
- It is using ER method.
- It is used in OLTP system.
- The database uses normalized data with joins.
- Tools - QTP, Selenium tools are used in database testing.
ETL Process in Data Warehouses
Extraction - Data is extracted from the source system into the staging area
- Three Data Extraction methods:
- Full Extraction
- Partial Extraction- without update notification.
- Partial Extraction- with update notification
- Some validations are done during Extraction:
- Reconcile records with the source data
- Make sure that no spam/unwanted data loaded
- Data type check
- Remove all types of duplicate/fragmented data
- Check whether all the keys are in place or not
Transformation - Data extracted from source server is raw and not usable in its original form. Therefore it needs to be cleansed, mapped and transformed
Data Integrity problem
- Different spelling of the same person like Jon, John, etc.
- There are multiple ways to denote company name like Google, Google Inc.
- Use of different names like Cleaveland, Cleveland.
- Different account numbers are generated by various applications for the same customer.
- In some data required files remains blank
- Invalid product collected at POS as manual entry can lead to mistakes.
Validations
- Filtering – Select only certain columns to load
- Using rules and lookup tables for Data standardization
- Character Set Conversion and encoding handling
- Conversion of Units of Measurements like Date Time Conversion, currency conversions, numerical conversions, etc.
- Data threshold validation check. For example, age cannot be more than two digits.
- Data flow validation from the staging area to the intermediate tables.
- Required fields should not be left blank.
- Cleaning ( for example, mapping NULL to 0 or Gender Male to "M" and Female to "F" etc.)
- Split a column into multiples and merging multiple columns into a single column.
- Transposing rows and columns,
- Use lookups to merge data
- Using any complex data validation (e.g., if the first two columns in a row are empty then it automatically reject the row from processing)
Loading
- Loading data into the target datawarehouse database is the last step of the ETL process
- Types of Loading:
- Initial Load — populating all the Data Warehouse tables
- Incremental Load — applying ongoing changes as when needed periodically.
- Full Refresh —erasing the contents of one or more tables and reloading with fresh data.
- Load verification
- Ensure that the key field data is neither missing nor null.
- Test modeling views based on the target tables.
- Check that combined values and calculated measures.
- Data checks in dimension table as well as history table.
- Check the BI reports on the loaded fact and dimension table.
ETL Tools
- Open Text Integration Center
- Relational Junction ETL Manager (Sesame Software)
- CloverETL
- PowerCenter Informatica
- Talend Studio for Data Integration
- Oracle Warehouse Builder (OWB)
- Oracle Data Integrator (ODI)
- Data Migrator (IBI)
- Cognos Data Manager
- IBM Infosphere Warehouse Edition
- SQL Server Integration Services (SSIS)
- IBM Infosphere Information Server
- Pervasive Data Integrator
- Pentaho Data Integration
- 19Adeptia Integration Server
- 4SAS Data Management
- 16Centerprise Data Integrator
- 20Syncsort DMX
- 10Sagent Data Flow
- 21QlikView Expressor
- 2SAP Data Services
- 6Elixir Repertoire for Data ETL
08 January 2021
#Multithread
| What is the difference between Process and Thread? |
| What are the benefits of multi-threaded programming? |
| What is difference between user Thread and daemon Thread? |
| What are different states in lifecycle of Thread? |
| What do you understand about Thread Priority? |
| What is Thread Scheduler and Time Slicing? |
| What is context-switching in multi-threading? |
| What is volatile keyword in Java |
| What is ThreadLocal? |
| What is Thread Group? Why it?s advised not to use it? |
| What is Java Thread Dump, How can we get Java Thread dump of a Program? |
| What is Deadlock? How to analyze and avoid deadlock situation? |
| What is Java Timer Class? How to schedule a task to run after specific interval? |
| What is Thread Pool? How can we create Thread Pool in Java? |
| What will happen if we don?t override Thread class run() method? |
| What is atomic operation? What are atomic classes in Java Concurrency API? |
| What is Lock interface in Java Concurrency API? What are it?s benefits over synchronization? |
| What is Executors Framework? |
| What is BlockingQueue? How can we implement Producer-Consumer problem using Blocking Queue? |
| What is Callable and Future? |
| What is FutureTask class? |
| What are Concurrent Collection Classes? |
| What is Executors Class? |
| What are some of the improvements in Concurrency API in Java 8? |
| Why thread communication methods wait(), notify() and notifyAll() are in Object class? |
| Why wait(), notify() and notifyAll() methods have to be called from synchronized method or block? |
| Why Thread sleep() and yield() methods are static? |
| Which is more preferred ? Synchronized method or Synchronized block? |
| How can we create a Thread in Java? |
| How can we pause the execution of a Thread for specific time? |
| How can we make sure main() is the last thread to finish in Java Program? |
| How does thread communicate with each other? |
| How can we achieve thread safety in Java? |
| How to create daemon thread in Java? |
| Can we call run() method of a Thread class? |
| Thread |
|
|
|
| Which method must be implemented by all threads in Java? |
| start() |
| run()* |
| stop() |
| main() |
| Which of the following is a marker interface? |
| Runnable |
| Serializable |
| Cloneable |
| Both B and C* |
| #Multithreading #Concurrency #ParallelProgramming #ThreadSafety #Synchronization #Threading #ThreadPool #AsynchronousProgramming #ConcurrencyControl #ConcurrentProgramming #ParallelComputing #ThreadManagement #ThreadingIssues #Deadlock #RaceCondition #Mutex #AtomicOperations #ContextSwitching #ThreadLifecycle #ReactiveProgramming #ThreadPools #ThreadPriority #Locks #GIL #ThreadingModel |
#EJB
| What is Byte Message? |
| What is Callback in EJB? |
| What is CDATA? |
| What is class level interceptor in EJB? |
| What is Class Methods? |
| What is ClassPathXmlApplicationContext? |
| What is Client acknowledgement in JMS? |
| What is Complex Element? |
| What is component mapping in Hibernate? |
| What is Configuration in hibernete? |
| What is Constructor Injection? |
| What is Container Managed Transactions? |
| What is contentType attribute? |
| What is ContextClosedEvent? |
| What is ContextRefreshedEvent? |
| What is Cookies? |
| What is Criteria in hibernete? |
| What is Data Island? |
| What is Data Source? |
| What is DataAccessException? |
| What is date validator? |
| What is decision? |
| What is default interceptor in EJB? |
| What is default result type? |
| What is DelegatingVariableResolver? |
| What is Detached state? |
| What is difference between encodeURL() and encodeRedirectURL()? |
| What is difference between GET and POST method in HTTP protocol? |
| What is difference between PrintWriter and ServletOutputStream? |
| What is difference between sendRedirect() and forward() in Servlet? |
| What is difference between Top Down and Bottom Up approach in SOAP Web Services? |
| What is differences between Functional Programming and Object-Oriented Programming? |
| What is different between web server and application server? |
| What is DiffGram in XML? |
| What is Document Object Model? Why it is used? |
| What is Document Type Definition (DTD)? |
| What is double validator? |
| What is DTD? |
| What is Durable subscription? |
| What is E4X in reference to XML? |
| What is EJBObject? |
| What is EJBQL? |
| What is email validator? |
| What is encoding rules for header entries? |
| What is Entity Bean in EJB? |
| What is Entity? |
| What is EntityManager? |
| What is Enumeration? |
| What is EnumMap? |
| What is EnumSet? |
| What is errorPage attribute? |
| What is expression validator? |
| What is extends attribute? |
| What is Fast mode |
| What is FileSystemXmlApplicationContext? |
| What is final modifier? |
| What is first level cache in hibernate? |
| What is Form Based Login? |
| What is HashMap? |
| What is HashSet? |
| What is HashTable? |
| What is Hibernate proxy? |
| What is Hibernate? |
| What is HTML Hidden Field? |
| What is HTTP Basic Authentication? |
| What is HTTP Digest Authentication? |
| What is HTTP? |
| What is HTTPS Authentication? |
| What is import attribute? |
| What is info attribute? |
| What is Instance Methods? |
| What is int validator? |
| What is Interface Injection? |
| What is Internationalization? |
| What is IOC (or Dependency Injection)? |
| What is isELIgnored Attribute? |
| What is isErrorPage attribute? |
| What is isScriptingEnabled Attribute? |
| What is isThreadSafe attribute? |
| What is ItemReader? |
| What is ItemWriter? |
| What is Iterator? |
| What is JAXB? |
| What is JAX-WS? |
| What is JDBC Driver interface? |
| What is JMS administered object? |
| What is JMS session? |
| What is JMS? |
| What is JNDI? Explain its terms in terms of EJB. |
| What is JSON in Ajax? |
| What is JSP Expression Language? |
| What is JSP page redirection? |
| What is JSP? |
| What is JSTL? |
| What is language attribute? |
| What is LinkedHashSet? |
| What is LinkedList? |
| What is LocalDateTime? |
| What is locale? |
| What is Localization? |
| What is Lookup? |
| What is many-to-many association? |
| What is ManyToMany? |
| What is many-to-one association? |
| What is ManyToOne? |
| What is Mapping and Single Value Commands |
| What is MDB and What is the special feature of that? |
| What is meaning of Android Word? |
| What is Context? |
| What is Initial Context? |
| What is SessionContext ? |
| What is ejb Create() and EjbPostCreate ()? |
| What is EAR, WAR and JAR ? |
| What is ACID Properties? |
| What is Ripple Effect? |
| What is Clone? |
| What is EJB? |
| What were Entity Beans? |
| What are versions of EJB? |
| What is J2EE? |
| What do you mean by ?Hot deployment? ? |
| What do you mean Enterprise JavaBeans (EJB) container? |
| What do you mean by in-memory replication? |
| What do you mean by bean managed transaction? |
| What do you mean by abstract schema? |
| What do you mean by re-entrant? Can you say that session beans as re-entrant? Can entity beans be specified as re-entrant? |
| What do you mean by EJB architecture? |
| What changes have been made in EJB 2.0 specifications? |
| What do you mean by EJBDoclet? |
| What do you mean by EJB QL? |
| Write the basic requirement of a CMP entity based class in 2.0 from EJB 1.1? |
| Which is more beneficial: Stateful or Stateless Bean? |
| Which is more beneficial: CMP or BMP? |
| How is consistency maintained by Stateful Session through transaction updates ? |
| How can one EJB be called from within another EJB? |
| How can a session bean be configured for transactions of bean-managed? |
| How can Enterprise JavaBeans be accessed from Active Server Pages? |
| How does EJB invocation take place? |
| When was EJB developed? |
| Who took over EJB? |
| Are entity beans allowed to create () methods? |
| Can remove () be a Stateless Session bean? |
| Can EJB made to handle multiple transactions? |
| Can more than a single table be mapped in CMP? |
| Differentiate ?Stateful Session? from ?Entity Bean? ? |
| Differentiate Conversational from Non-conversational interactions? |
| Differentiate Phantom from Un-repeatable? |
| Differentiate, ?find a method? from ?select method? in EJB ? |
| Enlist the Enterprise Beans types? |
| Enlist the Declarative Transaction types? |
| Enlist the changes in EJB 2.1 ? |
| Enlist the contents of Container. ? Container contains? |
| Enlist the technologies embraced in J2EE. |
| Is ejbCreate () method mandatory while defining a Session Bean? |
| Is state maintained by a Stateless bean? |
| Is having static initializer blocks legal in EJB? |
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