Multiple choice

Refer to the exhibit. What subnet mask will be applied if Router A sends a RIPv1 update for the network 172.16.1.0 to Router B?

  1. None of these

  2. 8

  3. 16

  4. 24
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

RIPv1 is a classful routing protocol that does not include subnet mask information in updates. However, when a network has subnets configured, RIPv1 can advertise the subnet mask if the receiving interface is in the same major network. For a Class B network like 172.16.0.0 with a /24 subnet (255.255.255.0), the routing update would include this 24-bit mask. The mask value of 24 corresponds to 255.255.255.0, which is the standard classful subnet mask for Class C networks but is being used here for subnetting a Class B address space.

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