SSC CHSL 2023 PYQ — Question 27

The correct answer is option 4 i.e. File transfer protocol.

Here’s an extended explanation of File Transfer Protocol (FTP) in 150 words and in bullet points:

• FTP stands for File Transfer Protocol, used for transferring files between a client and a server over a network.

• Developed in the early 1970s, FTP remains a widely used protocol for file transfers over the Internet.

• Two Channels:

  • Control Channel: Used for commands and responses (usually port 21).

  • Data Channel: Used for actual file transfer.

• Modes:

  • Active Mode: Client waits for server to connect.

  • Passive Mode: Server waits for client to connect.

• Authentication: Requires a username and password (can be anonymous FTP).

• Data Types: Supports ASCII (text) and binary formats.

• Security: Standard FTP transmits data in plaintext, which can be insecure. SFTP or FTPS can be used for encrypted transfers.

• File Management: Allows operations like uploading, downloading, renaming, and deleting files.

• Commonly used for web hosting, data sharing, and backups.