Port — Test 1

Correct Answer: A. A. Uniform resource identifier
Explanation: The Uniform Resource Identifier is a name and locator for the resource to be located by the HTTP. The URLs and URNs are derived through the identifier.

Correct Answer: A. A. Multiple HTTP requests are sent on a single TCP connection without waiting for the corresponding responses
Explanation: HTTP pipelining helps the client make multiple requests without having to waiting for each response, thus saving a lot of time and bandwidth for the client.

Correct Answer: B. B. 21
Explanation: FTP server listens on port 21 for connection request whereas port 20 is used for FTP data transfer. Port 22 is used for SSH remote login. Port 23 is used for TELNET.

Correct Answer: A. A. Transmission control protocol
Explanation: The clients use the Transmission Control Protocol for FTP as it’s more reliable than UDP, DCCP, and SCTP, and reliability of file transfer is required to be as high as possible for FTP.

Correct Answer: C. C. Client server architecture
Explanation: The FTP connection includes a Server and a Client which wish to share files. The server can have multiple clients at the same time while the client communicates with only one server at a time.

Correct Answer: D. D. Message mode
Explanation: In Stream mode, the data is transferred in a continuous stream. In Block mode, data is transferred after being divided into smaller blocks. In Compressed mode, data is transferred after being compressed using some compression algorithm.