Updated May 12, 2023
Introduction to SOAP Interview Questions and Answers
The following article provides an outline for SOAP Interview Questions. SOAP stands for Simple Access Object Protocol. This prevalent messaging protocol is mainly used for exchanging messages between two applications and the physical system through web service. Without this SOAP services approach, any available services will not be able to communicate between the different operating systems, or in clear terms, it will lose its popularity, especially in the case of system integration-related projects. As it will be used in current integration-related projects, it is automatically a favorite for both teacher and student.
If you are looking for a job related to SOAP, you must prepare for the 2023 SOAP Interview Questions. Every interview is indeed different as per the various job profiles. Here, we have prepared the vital SOAP Interview Questions and Answers to help you succeed in your interview.
This 2023 SOAP Interview Questions article will present the 10 most important and frequently asked SOAP interview questions. These interview questions are divided into two parts as follows:
Part 1 – SOAP Interview Questions (Basic)
This first part covers basic SOAP Interview Questions and Answers.
Q1. Explain in detail the Simple Access Object Protocol (SOAP) web services used by varieties organization for their system integration.
Answer:
SOAP handles the entire messaging through XML-based protocol. It helps design and develop web services that introduce communication channels between several developed applications deployed in different platforms independent of developing programming languages.
Q2. Explain processes followed by SOAP web services to exchange required messages between two operating systems and help in system integration.
Answer:
SOAP is mainly used for providing one that requires a user interface. One application can communicate with another through one secure protocol by maintaining different platforms and programming languages’ independence. A SOAP end-user or client application called the generated web service through SOAP protocol to securely require message information. SOAP interface typically provides the required information in the form of XML and returns that specific XML file to the client who called this service. Now the client closes the protocol connection and uses that XML response for their utility.
Q3. Give some proper examples where the developer should need to choose SOAP API. Is there any other better API available for message exchanges than SOAP API?
Answer:
Simple Access Object Protocol (SOAP) can be used anytime web service designing is required for the system configuration. The developer usually prefers SOAP web services when planning to manage varieties of essential data but has some critical dependency with multiple applications, most preferable if those applications are in different programming languages or types of platforms. For example, suppose all the application of a specific organization is willing to use the same login credentials for the activities available to users.
Now assume that credentials validation is designed in one programming language, but all the other applications may be designed in a different programming language; now, considering having to design the same with the same credentials validation developer has to choose some web service approach for calling that service every time and validated user-provided credential information from a single authenticated validating environment. Rather than this login independency, handling data for searching, inserting, deleting, and updating in different platforms, SOAP web service can always be a good choice.
Q4. Explain the facility Simple Access Object Protocol (SOAP) API provides anytime and how developers can utilize it in their programming.
Answer:
Several responsibilities typically need to follow by a SOAP tester in the current IT industry. SOAP has provided some key methods which can be utilized in the below approach:
- putAddress(): Used to enter one web page address for the SOAP call.
- putListing(): Used to allow entire XLS request or response in a web page.
- getAddress(): Used to send one query string to utilize SOAP calls properly.
- getAllListing(): Used to get the entire XML response.
Q5. Give one example of a major problem normally faced by the developer when using SOAP API for their application.
Answer:
One of the key problems we usually face in using SOAP API is a firewall security mechanism and integration of high-security SSL protocol. The system client and service provider must integrate advanced protocol or firewall security to introduce critical high-security.
Part 2 – SOAP Interview Questions (Advanced)
Let us now look at the advanced SOAP Interview Questions and Answers.
Q6. Explain in detail the various approaches available for implementing the Simple Object Access Protocol (SOAP) in any application involving system integration.
Answer:
Web service is mainly developed in Java programming language. Typically developers prefer below two popular approaches for developing any SOAP web services during integration between varieties systems.
- WSDL to Java Object: Normally, one developer understands the requirement for creating web services and defines the attributes required to make the same. Now the developer will create one XML file in the specifically followed proper approach of creating Web Service Definition Language (WSDL) and then generated using a java object from that WSDL file. Java object will populate automatically from the WSDL structure defined in the web service generating tool.
- Java Object to WSDL: Some developers follow a totally vice versa approach for generating web service. They created Java Object first based on the requirement, using the same. It caused one specific XML file of WSDL format. Then they have prepared to require web services.
Q7. Provide clear detail about the elements normally available or have to mention in the case of preparing SOAP messages for transferring data from system to system.
Answer:
Available elements are Envelope, Header, Body, and Fault.
Q8. Explain the syntax rules normally followed by the Simple Object Access Protocol (SOAP) web services.
Answer:
- Encoded XML
- Namespace defines in an envelope
- The namespace defines in the encoding
- Avoid DTD reference
- Avoid providing instructions in XML processing
Q9. Explain available transport methods in case of using SOAP web services in one application.
Answer:
Some famous test cases in the current IT industry. It mainly used HTTP and HTTPS protocols. SMTP is also used. But preferable is HTTP for transporting messages.
Q10. Explain in detail the class’s major functionalities normally used for setting up SOAP protocol in one application.
Answer:
SOAP protocol has been provided to use any available methods on the internet for all the web services to authenticate the user who is following to call those services through one secure protocol.
Provided functionalities are below:
- Call: It is one of the critical classes that help reach that specific remote method of the client’s web service. This call function ensures that web service clients can get their expected remote method.
- Deployment Descriptor: Holding all the SOAP services information.
- The writer in DOM2: Using to use DOM node from the XML string.
- Messages Sent to RPC: Using for sending the message between multiple platforms.
- Managing Services: Using for displaying the entire SOAP response.
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