Which of the following is a key characteristic of RIPv2?

The key characteristic of RIPv2 is that it supports classless routing, which allows for the inclusion of subnet information in routing updates. This is significant because it enables more efficient use of IP address space through Variable Length Subnet Masking (VLSM). By including subnet mask information in the routing updates, RIPv2 can route packets more effectively within a classless network structure, accommodating multiple subnetworks under the same network address.

Classless routing is crucial in modern networking because it provides the flexibility needed for accommodating a variety of network sizes and architectures. RIPv2, therefore, enhances the standard RIP by allowing for this classless routing capability, making it a valuable protocol in scenarios where efficient IP address management is necessary.

The other options do not accurately describe RIPv2, as it is not limited to static routing and has a maximum hop count of 15, not 10, while also utilizing a distance-vector algorithm, which is a common characteristic shared by various routing protocols but is not a defining trait exclusive to RIPv2.