Which of the following is a characteristic of a subnet created with a /31 prefix?

A /31 subnet in IPv4 provides exactly two IP addresses (e.g., 192.168.1.0/31 → usable: 192.168.1.0

and 192.168.1.1). Traditionally, these would represent a network address and a broadcast address,

but RFC 3021 redefines /31 subnets for point-to-point links, such as router-to-router connections.

In a /31 subnet:

Broadcast address is not used.

Both IPs are treated as usable host addresses.

It's ideal for point-to-point links, saving address space.

This is widely supported and standardized in Nokia IP and routing platforms.

Reference:

Nokia IP Fundamentals Guide – Subnetting Techniques

RFC 3021 – "Using 31-Bit Prefixes on IPv4 Point-to-Point Links"