04 May 2024

#SOAP

#SOAP

Key Concepts


Topic SubTopics Basic Intermediate Advanced Expert
SOAP Fundamentals Definition, Purpose, Characteristics ✅
SOAP Message Structure Envelope, Header, Body, Fault ✅ ✅
SOAP Protocols HTTP, SMTP, JMS, TCP ✅ ✅
SOAP vs REST Differences, Advantages, Disadvantages ✅ ✅
SOAP Elements Envelope, Namespace, Encoding ✅ ✅
WSDL Definition, Structure, Operations, Bindings ✅ ✅
UDDI Service Registry, Lookup, Discovery ✅ ✅
SOAP Binding Styles Document Style, RPC Style, Encoded, Literal ✅ ✅
SOAP Fault Handling Fault Code, Fault String, Detail ✅ ✅ ✅
SOAP Headers Authentication, Transaction, Routing ✅ ✅ ✅
SOAP Attachments SwA, DIME, MTOM ✅ ✅ ✅
SOAP Security Basics SSL, Basic Auth, Token-based ✅ ✅
WS-Security Encryption, Signatures, UsernameToken ✅ ✅
WS-Addressing Endpoint References, Message Routing ✅ ✅
WS-ReliableMessaging Message Ordering, Delivery Assurance ✅ ✅
WS-Policy Policy Assertion, Policy Attachment ✅ ✅
WS-AtomicTransaction Commit, Rollback, Coordination ✅ ✅
WS-Federation Identity Federation, Trust Relationships ✅ ✅
SOAP Interoperability Namespaces, Encoding Rules, Standards ✅ ✅ ✅
SOAP Handlers Request/Response Processing, Logging ✅ ✅ ✅
Development Approaches Contract-first, Code-first ✅ ✅ ✅
SOAP Tools SoapUI, Postman, Apache CXF, Axis2 ✅ ✅ ✅ ✅
SOAP in Java JAX-WS, Spring-WS, CXF ✅ ✅ ✅
SOAP in .NET WCF, ASMX, Visual Studio ✅ ✅ ✅
SOAP Performance Optimization, Compression, Scalability ✅ ✅
SOAP Security Advanced Replay Attack Prevention, SAML Tokens ✅ ✅
Monitoring & Debugging Logging, Tracing, Message Inspection ✅ ✅ ✅
Testing SOAP Unit Tests, Integration Tests, Load Tests ✅ ✅ ✅ ✅
SOAP in ESB Service Orchestration, Mediation, Routing ✅ ✅
SOAP in Microservices Integration, Migration to REST ✅ ✅

Interview question

Basic

  1. What is SOAP?
  2. What does SOAP stand for?
  3. What is the main purpose of SOAP in web services?
  4. Explain the SOAP message structure.
  5. What are the main parts of a SOAP message?
  6. What is the SOAP Envelope element?
  7. What is the SOAP Header used for?
  8. What is the SOAP Body used for?
  9. What is the SOAP Fault element?
  10. What transport protocols can SOAP use?
  11. What is the difference between SOAP and REST?
  12. What is XML in the context of SOAP?
  13. Is SOAP platform independent? Explain.
  14. What is WSDL in SOAP web services?
  15. What are SOAP bindings?
  16. What is the role of UDDI in SOAP?
  17. What are the advantages of SOAP over REST?
  18. What are the disadvantages of SOAP?
  19. What is the SOAP action in HTTP headers?
  20. What data format does SOAP use?
  21. Can SOAP work without WSDL?
  22. What is a SOAP client?
  23. What is a SOAP server?
  24. What is the default port for SOAP web services?
  25. Explain the difference between SOAP request and SOAP response.

Intermediate

  1. Explain the role of namespaces in SOAP.
  2. What are the different encoding styles in SOAP?
  3. What is document-style SOAP?
  4. What is RPC-style SOAP?
  5. Compare RPC and document-style SOAP.
  6. What is a SOAP Fault code?
  7. Explain the SOAP Fault string.
  8. What is the role of SOAP intermediaries?
  9. What are SOAP modules?
  10. What is the difference between SOAP encoding and literal?
  11. How does SOAP handle stateful operations?
  12. What is the difference between SOAP and JSON-RPC?
  13. Explain the difference between SOAP and XML-RPC.
  14. What is the SOAP processing model?
  15. Explain message-level security in SOAP.
  16. What are SOAP headers used for in authentication?
  17. How do you define operations in WSDL for SOAP?
  18. What is the difference between SOAP 1.1 and SOAP 1.2?
  19. What are SOAP faults in SOAP 1.2?
  20. What is the SOAP Message Transmission Optimization Mechanism (MTOM)?
  21. How does SOAP handle attachments?
  22. What is the difference between DIME and MTOM?
  23. How is error handling done in SOAP?
  24. How does SOAP handle multiple operations in a single service?
  25. What are the different WSDL binding styles for SOAP?

Advanced

  1. Explain the security challenges in SOAP.
  2. What is WS-Security in SOAP?
  3. What are WS-* standards?
  4. Explain WS-Addressing in SOAP.
  5. What is WS-ReliableMessaging?
  6. What is WS-Policy?
  7. Explain WS-AtomicTransaction.
  8. What is WS-Federation?
  9. How does WS-Security implement encryption in SOAP?
  10. How does WS-Security implement digital signatures?
  11. Explain UsernameToken in WS-Security.
  12. What is the difference between message-level and transport-level security in SOAP?
  13. What is the role of SAML tokens in SOAP web services?
  14. How do SOAP services handle large messages?
  15. What are best practices for SOAP fault handling?
  16. What are SOAP handlers?
  17. What is the difference between a handler and an interceptor in SOAP?
  18. How does SOAP ensure interoperability?
  19. Explain contract-first vs code-first SOAP service development.
  20. How do you generate SOAP client stubs from WSDL?
  21. What are the advantages of WSDL over manual SOAP XML creation?
  22. What is the difference between synchronous and asynchronous SOAP calls?
  23. How do you monitor SOAP web services?
  24. What is the impact of namespaces on SOAP interoperability?
  25. Explain SOAP over JMS (Java Messaging Service).

Expert

  1. How do you design scalable SOAP web services?
  2. How does SOAP integrate with Enterprise Service Bus (ESB)?
  3. How do you optimize SOAP performance?
  4. Explain SOAP message compression techniques.
  5. How do you debug SOAP messages?
  6. How do you log SOAP requests and responses securely?
  7. What are common SOAP security vulnerabilities?
  8. How do you mitigate XML External Entity (XXE) attacks in SOAP?
  9. How do you secure SOAP against replay attacks?
  10. How do you implement SSL/TLS with SOAP?
  11. How do you load test SOAP services?
  12. What are some SOAP testing tools?
  13. Explain how SOAP integrates with Spring Web Services.
  14. How do you expose SOAP web services in Java (JAX-WS)?
  15. How do you consume SOAP services in Java?
  16. How do you consume SOAP services in .NET?
  17. How does SOAP integrate with Apache CXF?
  18. Explain the role of Axis2 in SOAP web services.
  19. How do you migrate SOAP to REST?
  20. What are common real-world use cases for SOAP?
  21. How do you design fault-tolerant SOAP web services?
  22. How do you implement versioning in SOAP services?
  23. Explain SOAP in the context of microservices.
  24. What is the future of SOAP in modern architectures?
  25. Compare SOAP, REST, GraphQL, and gRPC in enterprise applications.

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