Скачать или смотреть Web Service Interview Questions & Answers | REST API & SOAP Web Service Interview Questions

1. What is a Web Service?

Answer:
Web Service ek software system hai jo internet ke through applications ke beech communication allow karta hai. Ye XML, JSON ya SOAP protocols use karta hai data exchange ke liye. Basically, ye applications ko platform-independent aur language-independent communication deta hai.

2. Types of Web Services

Answer:

SOAP (Simple Object Access Protocol) Web Service – XML-based, strict standards, zyada secure, enterprise-level.

REST (Representational State Transfer) Web Service – Lightweight, mostly JSON/HTTP-based, easy to use, fast.

3. Difference between SOAP and REST

Answer:

Feature SOAP REST
Protocol XML HTTP/JSON
Security Built-in (WS-Security) HTTPS
Performance Slower (heavy) Faster (lightweight)
Standards Strict Flexible
State Stateful/Stateless Mostly Stateless
4. What is WSDL?

Answer:
WSDL ka full form hai Web Services Description Language. Ye XML-based file hai jo Web Service ke methods, inputs, outputs aur communication protocols define karta hai. Basically, WSDL ek contract hai client aur service ke beech.

5. What is UDDI?

Answer:
UDDI (Universal Description, Discovery, and Integration) ek directory service hai jahan pe businesses apni Web Services register karte hain aur clients unko discover kar sakte hain.

6. What is SOAP Header?

Answer:
SOAP header optional part hai jo security, transactions, ya message routing information provide karta hai. Ye additional metadata provide karta hai without changing main message body.

7. What is RESTful Web Service?

Answer:
RESTful Web Service HTTP methods (GET, POST, PUT, DELETE) use karta hai resources ke liye. Ye stateless aur lightweight hota hai, aur mostly JSON format use karta hai response ke liye.

8. Difference between SOAP and REST in security

Answer:

SOAP – WS-Security (encryption, digital signature) support karta hai.

REST – HTTPS ka use karke secure hota hai, aur OAuth token authentication ke liye use hota hai.

9. What are the HTTP methods used in REST?

Answer:

GET – Data read karne ke liye

POST – Data create karne ke liye

PUT – Data update karne ke liye

DELETE – Data delete karne ke liye

PATCH – Partial update ke liye

10. What is JSON and XML in Web Services?

Answer:

XML (Extensible Markup Language): Structured, hierarchical format, mostly SOAP ke saath use hota hai.

JSON (JavaScript Object Notation): Lightweight, key-value format, mostly REST APIs me use hota hai.

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