Which protocol is used to download a file?a)FTPb)TCPc)IPd)UDPCorrect a...
FTP , file transfer protocol help the user to transfer files or data from server !
Which protocol is used to download a file?a)FTPb)TCPc)IPd)UDPCorrect a...
Protocol used to download a file: FTP (File Transfer Protocol)
FTP, or File Transfer Protocol, is a standard network protocol used for transferring files from one host to another over a TCP-based network, such as the internet. It is specifically designed to facilitate the transfer of files between a client and a server.
How FTP works:
FTP follows a client-server architecture, where the client initiates a connection to the server to transfer files. Let's understand the process in detail:
1. Establishing a connection:
- The client initiates a connection to the FTP server using the server's IP address or domain name.
- The client and server exchange control information, including authentication credentials, to establish a secure connection.
2. Authentication:
- Once the connection is established, the client provides a username and password to authenticate itself with the server.
- If the credentials are valid, the server grants access to the client.
3. Navigating the file system:
- After successful authentication, the client can navigate the file system of the server.
- The client can change directories, list files and directories, and perform other file management operations.
4. Transferring files:
- Once the client has located the file to download, it sends a request to the server to transfer the file.
- The server responds by initiating the data transfer process.
- The file is divided into smaller packets, which are then sent over the network using TCP/IP.
5. Confirmation and completion:
- As the data packets are received by the client, they are reassembled into the original file.
- Once the file transfer is complete, the server sends a confirmation to the client.
- The client can then close the connection with the server.
Advantages of using FTP:
- FTP supports the transfer of large files efficiently.
- It provides flexibility in terms of accessing and managing files on remote servers.
- FTP allows for secure and encrypted file transfers.
- It supports resume functionality, allowing interrupted transfers to be resumed from where they left off.
- FTP has widespread support and is compatible with various operating systems and platforms.
In conclusion, FTP is the protocol specifically designed for downloading files over a network. It provides a reliable and secure method for transferring files between a client and a server.