FTP and SFTP for file transfer in Computer Networks - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does FTP stand for and what is its primary use?

FTP stands for File Transfer Protocol. It is used to transfer files between a client and a server over a network.

beginner

How does SFTP differ from FTP?

SFTP stands for Secure File Transfer Protocol. Unlike FTP, SFTP encrypts both commands and data, making file transfers secure.

intermediate

Why is FTP considered less secure than SFTP?

FTP sends data, including passwords, in plain text, which can be intercepted. SFTP encrypts all data, protecting it from eavesdropping.

intermediate

What common port numbers do FTP and SFTP use?

FTP commonly uses ports 20 and 21. SFTP uses port 22, the same as SSH, because it runs over the SSH protocol.

beginner

Can you use FTP without an internet connection?

Yes, FTP can be used on local networks to transfer files between computers without internet access.

Which protocol encrypts file transfers to keep data secure?

A SMTP

B HTTP

C FTP

D SFTP

SFTP encrypts both commands and data, ensuring secure file transfers.

What port does FTP typically use for control commands?

A 21

B 22

C 80

D 25

FTP uses port 21 for control commands and port 20 for data transfer.

Which statement is true about FTP?

A It encrypts all data by default.

B It sends data in plain text.

C It uses port 22.

D It is only used for email.

FTP sends data, including passwords, in plain text, which is not secure.

SFTP runs over which protocol?

A SSH

B SMTP

C HTTP

D FTP

SFTP runs over SSH, which provides encryption and security.

Which protocol would you choose for secure file transfer over the internet?

A FTP

B Telnet

C SFTP

D HTTP

SFTP is designed for secure file transfer by encrypting data.

Explain the main differences between FTP and SFTP.

Think about security and ports used.

Describe a situation where using FTP might be acceptable despite its lack of encryption.

Consider when security is less critical.