Test Your Knowledge About Routers!

Based on the given information, the correct answer is RIP. This can be inferred from the fact that the question mentions "default settings" being configured, which implies that the router is using a basic routing protocol. RIP (Routing Information Protocol) is a commonly used interior gateway protocol that is often configured as the default routing protocol in many routers.

The command "RouterB(config)# no router rip" will stop the RIP routing process. This command removes the RIP routing protocol configuration from the router's configuration. By using the "no" keyword followed by "router rip", the router will no longer participate in RIP routing and will stop advertising and receiving RIP updates.

Distance vector algorithms, such as the Routing Information Protocol (RIP), require each router in the network to send the entire routing table to each neighboring router. This is because distance vector algorithms use the concept of hop count to determine the best path to a destination. By exchanging the entire routing table, routers can calculate the shortest path based on the accumulated hop counts. This allows routers to make informed decisions about the best route to forward packets within the network.

Split horizon is a technique used in computer networking to prevent routing loops. It works by not allowing a router to advertise a route back to the same interface from which it was learned. This prevents incorrect routing information from being distributed back to the source and helps maintain a stable and efficient routing table.

RIP (Routing Information Protocol) is a distance vector routing protocol used in computer networks. It calculates the best path for data packets based on the number of hops (or routers) they need to traverse. The maximum metric value in RIP is 15 hops, meaning that if a route exceeds this value, it is considered unreachable. Routing updates in RIP occur every 30 seconds, allowing routers to exchange information about network changes. Therefore, the correct statements that describe RIP are: The maximum metric value is 15 hops, Routing updates occur every 30 seconds, and It is a distance vector routing protocol.

The correct answer is "debug ip rip". This command is used to enable debugging messages for the Routing Information Protocol (RIP) on a router. It allows you to see real-time activity and updates related to RIP on the router, helping with troubleshooting and monitoring the protocol's behavior.

A distance vector routing protocol sets a hold-down timer on a route when the route is marked as inaccessible. This means that if the protocol determines that a route is no longer reachable, it will mark it as inaccessible and initiate a hold-down timer. During this time, the protocol will not accept any updates or changes regarding that route. This is done to prevent routing loops and ensure stability in the network. Once the hold-down timer expires, the protocol will reassess the route and make necessary adjustments.

When a routing table update is received by a router in a distance vector network, the hop count metrics for the enclosed routes are incremented. This means that the router increases the number of hops it takes to reach the destination network for each route in the update. This allows the router to keep track of the distance or cost to each network and make routing decisions based on the shortest path. By incrementing the hop count metrics, the router can prioritize routes with lower hop counts and avoid routing loops.

RIP sends routing table updates periodically, every 30 seconds. This is the default behavior of RIP and ensures that routing information is regularly exchanged between neighboring routers. Additionally, RIP can also send updates when topology changes occur, such as when a link goes down or a new route is added. This triggered-update feature can be optionally configured to provide more immediate updates in response to network changes.

The administrative distance of a routing protocol determines the trustworthiness of the route information received from that protocol. It is used to select the best path when there are multiple routing protocols running on a network device. In this case, the output of the show IP route command displays the administrative distance of the enabled routing protocol as 120, indicated by the [120/2] in the output.

When the outgoing interface is not available, the static route entry is removed from the routing table. This is because a static route is manually configured by the network administrator and does not dynamically adjust to changes in the network. Therefore, if the outgoing interface is not available, the route becomes invalid and is removed from the table to prevent any further attempts to use it for forwarding traffic.

To configure a static route for use if a primary route fails, the administrator would need to configure the route with an administrative distance greater than the default value. Administrative distance is a value used by routers to determine the trustworthiness of routing information received from different sources. By setting the administrative distance of the static route higher than the default value, the router will prioritize the static route over other routes, including the primary route, in case of a failure. This ensures that the static route will be activated as needed when the primary route is not available.

Route poisoning is a routing loop prevention mechanism in which a router advertises a network with an infinite metric (usually 16) to indicate that the network is unreachable. In this scenario, when Router2 detects that the link to Router1 has gone down, it advertises the network for this link with a hop count metric of 16, effectively poisoning the route. This prevents other routers from using this route and avoids routing loops.

Routers perform the function of identifying new destinations as routing information travels through the network. This is because routers maintain a routing table that contains information about the available paths to different destinations in the network. They use this information to determine the best path for forwarding packets to their intended destinations. Additionally, routers also identify invalid networks by comparing the destination address of incoming packets with the entries in their routing table. If the destination address does not match any valid network, the router identifies it as an invalid network.

By changing the RIP holddown timer to 96 seconds, the network's convergence time can be decreased. The RIP holddown timer is a mechanism used by the Routing Information Protocol (RIP) to prevent routing loops. When a route becomes unreachable, the holddown timer is activated and prevents any new updates about that route for a certain period of time. By reducing the holddown timer to 96 seconds, the network will be able to quickly update and converge on new routes, improving overall network performance.

If the router receives packets for a subnet that is not in its routing table but is in the same classful network as the other subnets, and the IP classless command is disabled, the router will discard the packets. This is because with the IP classless command disabled, the router does not have the capability to look for a more specific route to the subnetted network. As a result, the router cannot forward the packets using the default route or a route to one of the other subnets. Therefore, the packets are simply discarded.

If the passive-interface command is enabled on the fa0/0 interface of Router E, it means that Router E will not send routing updates via interface fa0/0. However, it will still use routing updates learned via interface fa0/0. This means that Router E will listen and learn from routing updates received on interface fa0/0, but it will not actively participate in sending updates through that interface.

Load balancing in RIP allows a router to take advantage of multiple best paths to a given destination. This means that the router can distribute traffic across these paths, optimizing network performance and preventing congestion. Additionally, only one path to a destination can be statically assigned or dynamically calculated, ensuring that traffic is efficiently routed without unnecessary redundancy. RIP load balancing is not based on the round robin approach or bandwidth and hop count, as stated in the other options.

The correct command sequence to enable RIP on Router B for all connected networks is to enter the following commands: "RouterB(config-router)# network 198.16.4.0", "RouterB(config-router)# network 210.36.7.0", and "RouterB(config-router)# network 220.17.29.0". This sequence ensures that all three networks are included in the RIP routing process on Router B.

After RouterA loses connectivity to network 114.125.16.0, RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterA. This means that RouterB will inform RouterA about the availability of these networks. Additionally, RouterC will learn about the loss of connectivity to network 114.125.16.0 from RouterB. This means that RouterC will receive an update from RouterB stating that network 114.125.16.0 is no longer accessible.

The first statement is true because the metric to network 192.168.8.0 is given as 24 in the router output. The second statement is also true because the hop count to a device on network 192.168.8.0 is given as 2 in the router output.