100-150 Question 54
Single answerA network administrator is troubleshooting a file transfer issue between two servers. The administrator notices that the transfer protocol being used does not establish a connection before sending data and does not retransmit lost packets. Which protocol is most likely being used in this scenario?
- A
FTP
- B
TFTP
- C
SFTP
- D
HTTP
Show answer and explanation
Correct answer: B
Explanation
TFTP is a lightweight file transfer protocol that uses UDP, a connectionless protocol. Unlike TCP-based protocols such as FTP or SFTP, TFTP does not establish a connection or handle retransmissions, making it less reliable but faster for simple file transfers.
- A. Incorrect.
FTP (File Transfer Protocol) is a connection-oriented protocol that uses TCP, ensuring reliability by establishing a connection and retransmitting lost packets if necessary.
- B. Correct.
TFTP (Trivial File Transfer Protocol) is a connectionless protocol that uses UDP, meaning it does not establish a connection before sending data and does not retransmit lost packets. This makes it faster but less reliable.
- C. Incorrect.
SFTP (Secure File Transfer Protocol) is a secure, connection-oriented protocol that uses SSH for encryption, ensuring reliability and secure data transfer.
- D. Incorrect.
HTTP (Hypertext Transfer Protocol) is a connection-oriented protocol built on TCP. It establishes a reliable connection to ensure proper delivery of web data.