CompTIA Network+ (N10-009) — Question 234

A secure communication link needs to be configured between data centers via the internet. The data centers are located in different regions. Which of the following is the best protocol for the network administrator to use?

Answer options

• A. DCI
• B. GRE
• C. VXLAN
• D. IPSec

Correct answer: D

Explanation

IPSec is the best choice for securing communications over the internet as it provides robust encryption and authentication, ensuring data confidentiality and integrity. DCI, GRE, and VXLAN, while useful for various networking scenarios, do not offer the same level of security as IPSec for communication over untrusted networks like the internet.