Web Caching — Test 1

Correct Answer: B. B. Representational state transfer
Explanation: REST stands for Representational State Transfer and is a software architecture style in which the server sends a representation of the state of the resource that it requests. It provides interoperability between the systems.

Correct Answer: A. A. HTTP
Explanation: Restful web services make use of HTTP protocol as a medium of communication between client and server. The REST architecture was known as the HTTP object model back in the year 1994.

Correct Answer: C. C. Using spaces for long resource names
Explanation: We must use hyphens (-) or underscores (_) instead of spaces to represent long resource names. It may lead to the resource to be less recognizable for the system if we use spaces instead.

Correct Answer: B. B. Delete
Explanation: DELETE operation should be idempotent, means their result will always same no matter how many times these operations are invoked. Also, the PUT operation is supposed to be idempotent.

Correct Answer: B. B. Private
Explanation: Private directive indicates that resource is cachable by only client and server; no intermediary can cache the resource. But if we use the public directive, it indicates that the resource may be cachable by any intermediary component.

Correct Answer: B. B. 201
Explanation: HTTP Status Code 201 means CREATED, when a resource is successful created using POST or PUT request. The code 200 means success i.e. OK, code 204 means NO CONTENT, and the code 304 means NOT MODIFIED.

Correct Answer: C. C. @put
Explanation: @PUT is the HTTP request that is used to create resource and also define a complete resource path. @POST may also be used to create a resource but it won’t define a resource path i.e. an accessing medium.

Correct Answer: C. C. @matrixparam
Explanation: @MatrixParam is the annotation that binds the parameter passed to method to a HTTP matrix parameter in path, while @QueryParam binds to a query parameter, @PathParam binds to a value and @HeaderParam binds to the HTTP header in the path.

Correct Answer: B. B. True view
Explanation: In REST architecture, a REST Server simply provides access to resources and REST client accesses and presents the resources. It is popularly used because it makes efficient use of the bandwidth and can be cached for better performance and scalability.

Correct Answer: B. B. False
Explanation: POST operation can cause different result so they are not idempotent. The DELETE and PUT operations are idempotent as they invoke the same result every time they are called.