Cisco Certified Network Associate (CCNA) Practice Exam

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How does RIP version 1 differ from RIP version 2 in terms of updates?

RIP version 1 sends subnet masks in updates.
RIP version 1 uses multicasts for updates.
RIP version 1 broadcasts updates.
RIP version 1 is a classless routing protocol.

The correct answer is: RIP version 1 broadcasts updates.

RIP version 1 primarily uses broadcasts to send routing updates. This means that routing information is sent to all nodes on the local network, which can lead to unnecessary traffic and inefficiencies, especially in larger networks. The broadcast mechanism can also restrict the capability to accurately route subnets since it does not include subnet mask information in its updates, making RIP version 1 a classful routing protocol. In contrast, RIP version 2 improves upon this by employing multicast for its updates, which sends updates to specific interested routers rather than all devices on the network. This multicast approach is more efficient and reduces the overall traffic on the network while allowing for the inclusion of subnet mask information, thus enabling support for more modern, hierarchical IP address structures. Additionally, RIP version 2 is classified as a classless routing protocol because it can convey subnet information within its updates, allowing for more flexible addressing and improved routing capabilities. Thus, the correct understanding of RIP version 1's broadcast nature is crucial for distinguishing its limitations compared to RIP version 2.