200-301 Question 137
Single answerYou are tasked with configuring secure communication between two branch offices over an untrusted network. The objective is to ensure data confidentiality, integrity, and authentication. Which encryption protocol would best meet these requirements?
- A
IPSec
- B
WEP
- C
PAP
- D
MD5
Show answer and explanation
Correct answer: A
Explanation
IPSec is the correct answer because it provides a robust set of security features, including encryption, integrity, and authentication, making it ideal for securing communication between two branch offices over an untrusted network. The other options either lack encryption functionality or are outdated and insecure for this use case.
- A. Correct.
IPSec is a widely used protocol suite that ensures secure communication by providing encryption, integrity, and authentication. It is specifically designed for secure data transfer over untrusted networks such as the internet.
- B. Incorrect.
WEP is an outdated and insecure protocol used for wireless networks. It does not provide strong encryption or authentication for secure communication over untrusted networks.
- C. Incorrect.
PAP (Password Authentication Protocol) is a weak authentication protocol that sends credentials in plain text. It does not provide encryption, integrity, or authentication for secure communication.
- D. Incorrect.
MD5 is a cryptographic hash function used for data integrity checks, but it is not suitable as a standalone encryption protocol for secure communication over untrusted networks.