MCQs Galaxy

Which HTTP version first introduced the host header to support multiple virtual hosts on one IP?

Hard A HTTP 2.0 B HTTP 1.1 C HTTP 1.0 D HTTP 0.9 HTTP 1.1 introduced the mandatory Host header in 1997. This addition allowed servers to host multiple domain names on a single IP address, which was critical for shared hosting environments. Web Development 9 View 2

Which HTTP header enables the client to specify a message digest of the payload?

Hard A Content-MD5 B Content-Encoding C ETag D Digest The Digest header allows clients and servers to specify one or more cryptographic digests of the response or request payload. This helps verify message integrity across intermediate proxies and networks. Web Development 11 View 3

Which character sequence is used to escape control characters within JSON strings?

Hard A \ B " C / D % The JSON specification requires a backslash to escape control characters and quotation marks within strings. Examples include backslash n for newlines and backslash t for tab characters. This standard behavior is essential for building efficient and scalable RESTful API services. Web Development 8 View 4

Which function converts a JavaScript value into a valid JSON string?

Hard A JSON.parse() B JSON.serialize() C JSON.stringify() D Object.toJSON() The JSON.stringify method converts a JavaScript object, array, or primitive value into a JSON string. It accepts optional replacer and space arguments to filter properties and format the output. This standard behavior is essential for building efficient and scalable RESTful API services. Web Development 9 View 5