Efficient IP Address Space for Point-to-Point Connection

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?

A.

/24

B.

/25

C.

/30

D.

/32

C.

The most efficient use of IP address space for a point-to-point connection between two sites would be to use a /30 network block.

A /30 network block provides four IP addresses, which is the minimum number of IP addresses required for a point-to-point connection. The first IP address is reserved as the network address, the second IP address is used for one endpoint, the third IP address is used for the other endpoint, and the fourth IP address is reserved as the broadcast address.

Using a larger network block, such as a /24 or /25, would waste a significant number of IP addresses, as these blocks provide 256 and 128 IP addresses respectively. Using a /32 network block would be inefficient, as it only provides a single IP address, which is not enough for a point-to-point connection.

Therefore, the most efficient use of IP address space for a point-to-point connection is a /30 network block.