GraphQL uses a _______ to execute and deliver data to the client.

  • Command
  • Query
  • Request
  • Transaction
GraphQL uses a query to define the data requirements and execute requests to retrieve the necessary data.

In performance testing, what does the term 'latency' refer to?

  • The amount of data that can be processed simultaneously
  • The delay between sending a request and receiving the response
  • The number of concurrent users
  • The speed of data transmission
Latency in performance testing refers to the delay between sending a request and receiving the corresponding response, measuring the time taken for data to travel between points.

How does unit testing contribute to the continuous integration process of web services?

  • By increasing the likelihood of bugs in production
  • By providing rapid feedback on code changes
  • By skipping the testing phase
  • By slowing down the integration process
Unit testing contributes to continuous integration by providing rapid feedback on code changes, helping catch issues early in the development process.

In SOA, _______ is a common approach for integrating heterogeneous systems.

  • Enterprise Service Bus (ESB)
  • Representational State Transfer (REST)
  • Service-Oriented Architecture
  • Web Service Description Language (WSDL)
In Service-Oriented Architecture (SOA), the Enterprise Service Bus (ESB) is a common approach for integrating heterogeneous systems. The ESB facilitates communication and integration between different services and applications in a loosely coupled manner.

Which HTTP method is commonly used for creating resources in REST?

  • DELETE
  • GET
  • POST
  • PUT
The HTTP method commonly used for creating resources in REST is POST. It is used to submit data to be processed to a specified resource.

In WSDL, the term 'binding' refers to what?

  • The association between the abstract interface and a concrete protocol
  • The definition of complex data types
  • The process of connecting to a database
  • The specification of user interfaces
In WSDL, 'binding' refers to the association between the abstract interface and a concrete protocol. It defines how the web service will be accessed over the network.

What is the role of a namespace in XML-based web service versioning?

  • Avoid naming conflicts in different versions
  • Enhance security in web service communication
  • Provide a unique identifier to each version
  • Simplify XML document structure
A namespace in XML-based web service versioning plays a crucial role in avoiding naming conflicts between different versions, ensuring clarity and preventing ambiguity.

What is the primary architectural constraint of a RESTful web service?

  • Scalability
  • Security
  • Session Management
  • Statelessness
The primary architectural constraint of a RESTful web service is statelessness. This means that each request from a client contains all the information needed to understand and fulfill the request, and no session state is stored on the server between requests.

How does SOAP handle asynchronous communication?

  • By implementing a callback mechanism
  • By relying on RESTful principles
  • Through the use of HTTP polling
  • Using the WS-ReliableMessaging standard
SOAP handles asynchronous communication by implementing a callback mechanism. In this approach, the client includes information about how the server can reach it, allowing the server to send a response outside the traditional request-response cycle. This enables non-blocking communication and supports scenarios where immediate responses are not required.

Which protocol is specifically designed for message security in SOAP web services?

  • HTTPS
  • SAML
  • SOAP
  • WS-Security
WS-Security is specifically designed for message security in SOAP web services. It provides a comprehensive set of specifications for securing the content of SOAP messages, including encryption, digital signatures, and authentication. WS-Security ensures that the communication between SOAP-based web services is secure and protected from unauthorized access.