Web Services Interview Questions and Answers
Web services are modular, self-contained, dynamic and distributed applications that can be published, described, invoked or located over the network to create processes, products and supply chains. These applications can be distributed web-based or local. All of the web services are developed on top of open standards such as HTTP, Java, HTML, TCP/IP, and XML. We will discuss a set of expert picked Restful Web Services Interview Questions with the most suitable answers further here. It is utilized for the machine to machine communication, specifically for transferring machine-readable files such as JSON and XML. Web services are used to communicate one programming language with another, so it’s a medium to achieve interoperability. Due to the high demand for web services, businesses from every niche globally are hiring web service professionals to support them optimally.
Advantages of Restful Web Services
- Web services can expose the existing code functionality over the network so that other applications can use the similar feature of the program.
- Can be used to make the application technology and platform-independent.
- Web services allow various applications to communicate with each other and share services and data among themselves.
- The use of standardization protocol in web services benefits businesses with a wide range of choices, cost reduction, and increased quality.
- Web services utilize SOAP over HTTP protocol, so developers can work with existing low-cost internet for implementing web services.
Now, let’s discuss the most asked Restful Web Services Interview Questions for your acknowledgment, so you can ensure future success with your interviews.
Most Frequently Asked Web Services Interview questions
REpresentational State Transfer or REST web service is an architectural style for developing. It’s favorite due to its simplicity and fact that it builds upon existing features and systems of HTTP in order to achieve its objectives, as opposed to creating entirely new frameworks, technologies, and standards.
The sun-jaxws.xml file is present in SOAP web services and helps in offering the endpoints details when JAX WS web services get deployed in a servlet container. Placed in WEB-INF directory, the sun-jaxws.xml file contains implementation class, endpoint name, meta information, and a URL pattern.
BEEP or Blocks Extensible Exchange Protocol is connection oriented internet protocol. SOAP messages inherit the additional service qualities from BEEP to maintain session context at the receiver and the sender.
SOA or Service-Oriented Architecture is a collection of services. These services present in SOA communicate with each other and involve simple data passing or involve coordinating two or more services to perform an activity.
Public Key Infrastructure or PKI is a framework of cybersecurity and encryption that protects communications between the server and users.
It works with two different cryptographic keys; a public key and a private key.
| S.no | SOA | Web Service |
|---|---|---|
| 1. | SOA or Service Oriented Architecture is an architectural concept focused on having different services communicating with each other to carry out a more significant function. | A web service is a fundamental building block present in a Service Oriented Architecture. When multiple functions get combined, an application is created under an SOA |
The above question can be a game-changing Web Service Interview Question for you. You just have to go through it one more time.
In web service, JAXP is used to process XML data using applications written in the JAVA programming language. It works with a pluggability layer that allows you to plug in an implementation of the DOM or SAX APIs.