CompTIA Network+ (N10-007) — Question 47

A technician is setting up a branch office on a point-to-point connection. Which of the following IP network blocks is the MOST efficient use of IP address space for the router connections between the two sites?

Answer options

• A. /24
• B. /25
• C. /30
• D. /32

Correct answer: C

Explanation

The /30 subnet block is ideal for point-to-point connections as it provides exactly two usable IP addresses, one for each end of the link. The other options, such as /24 and /25, allocate more addresses than necessary, leading to inefficient use of address space. /32 is used for a single host, which is not suitable for a connection between two sites.