Your manager asks you to set up a secure network connection at a remote site to move over some backups. Which protocol would you use?
A. SFTP
B. FTP
C. SSH
D. IP
E. DHCP
The Correct Answer and Explanation is:
The correct answer is A. SFTP (Secure File Transfer Protocol).
Explanation:
When setting up a secure network connection to transfer backups, the primary concern is ensuring the confidentiality and integrity of the data being transferred. Among the options listed, SFTP is specifically designed for secure file transfer over a network.
1. SFTP Overview:
SFTP is an extension of the Secure Shell (SSH) protocol and provides a secure method for file transfer. It encrypts both commands and data, preventing unauthorized access and ensuring that sensitive information is not exposed during transmission. This encryption protects against various attacks, such as eavesdropping and man-in-the-middle attacks, making it an ideal choice for transferring backup files that may contain sensitive data.
2. Comparison with Other Protocols:
- FTP (File Transfer Protocol) (Option B): While FTP is commonly used for transferring files, it does not provide any encryption. Data is transmitted in plaintext, which makes it vulnerable to interception by malicious actors. Therefore, using FTP for backup transfers would pose significant security risks.
- SSH (Secure Shell) (Option C): SSH is primarily a protocol for securely accessing and managing network devices and servers, not specifically for file transfers. While it can be used to tunnel other protocols securely, it is not a file transfer protocol by itself.
- IP (Internet Protocol) (Option D): IP is a foundational network protocol that is responsible for addressing and routing packets of data across networks. It does not provide any security features for file transfers.
- DHCP (Dynamic Host Configuration Protocol) (Option E): DHCP is used to dynamically assign IP addresses to devices on a network. It has no relevance to file transfer and does not provide any secure method for moving data.
3. Conclusion:
For securely transferring backups, SFTP is the most suitable choice among the options provided. It ensures data security through encryption, making it a best practice for organizations that need to protect their data during transfer. By using SFTP, you can be confident that your backups will be securely moved to the remote site without risk of exposure or interception.