A Unique Quiz On CCNA 2 Chapter 3

The purpose of the routing protocol is to allow a router to share information about known networks with other routers. This enables routers to communicate and exchange information about the best paths for forwarding data packets to their intended destinations. By sharing this information, routers can make informed decisions on how to efficiently route network traffic and ensure that data reaches its intended destination in the most optimal way possible.

The value 120 is used to determine the best path when a router has more than one routing protocol configured for the same destination network. This value represents the administrative distance, which is a measure of the trustworthiness of a routing protocol. When multiple routing protocols are configured, the router will select the route with the lowest administrative distance as the best path. In this case, the route with an administrative distance of 120 is chosen over other routes.

The correct answer is "show ip route". By issuing this command, the network administrator can determine if load balancing is in effect on the router. The "show ip route" command displays the routing table, which includes information about the routes and their associated metrics. If load balancing is enabled, multiple routes with equal metrics will be displayed for the same destination network.

When a router learns two paths with equal metrics to a destination network via the RIP routing protocol, it will install both routes in the routing table and load balance between the two. This means that the router will distribute the incoming packets between the two paths, effectively sharing the network traffic load and improving overall performance. By utilizing both paths, the router can achieve better redundancy and optimize the use of available resources.

Fast convergence is desirable in networks that use dynamic routing protocols because routers may make incorrect forwarding decisions until the network has converged. When a network is undergoing changes, such as link failures or topology changes, routers need to quickly update their routing tables to ensure that packets are being forwarded correctly. If the network takes too long to converge, routers may continue to use outdated or incorrect routing information, leading to suboptimal routing or even packet loss. Therefore, fast convergence helps to minimize the potential for routing errors and ensures efficient and reliable packet forwarding.

The given commands configure the IP address and enable the interface on a Cisco router. The "ip address" command assigns the IP address 172.16.3.1 with a subnet mask of 255.255.255.0 to the FastEthernet interface 0/0. The "no shutdown" command enables the interface.

When an interface is enabled with a valid IP address, a routing table entry is automatically created for that network. In this case, the routing table entry will be made for the 172.16.3.0 network with a code of C, indicating that it is directly connected to the router. This means that the router will be able to route traffic to the 172.16.3.0 network without the need for any additional static routes or dynamic routing protocols.

When multiple routing protocols have a route to the same destination network, the route with the lowest administrative distance is installed in the routing table. Administrative distance is a value assigned to each routing protocol, indicating its trustworthiness or preference. The lower the administrative distance, the more trusted or preferred the routing protocol is considered. Therefore, when multiple protocols have routes to the same network, the one with the lowest administrative distance is chosen to be installed in the routing table.

The number 129 in this output indicates the cost for this link.

The administrative distance of a route determines the trustworthiness of the source of the route information. In this case, the administrative distance of the route for network 172.16.0.0 is stated to be 90. Administrative distance is used by routers to select the best path when there are multiple routes available for the same destination. A lower administrative distance value indicates a more trusted source, so a route with an administrative distance of 90 would be preferred over routes with higher administrative distances.

R1 will install an EIGRP route using network B in its routing table because the administrative distance of EIGRP is lower than RIP. Administrative distance is a metric used by routers to determine the trustworthiness of a routing protocol. A lower administrative distance indicates a more reliable protocol. In this case, EIGRP has a lower administrative distance than RIP, so R1 will choose the EIGRP route over the RIP route.

Distance vector routing protocols send their routing tables to directly connected neighbors. This means that each router in the network shares information about the routes it knows to its neighboring routers. By exchanging routing tables, routers can learn about the available paths and make routing decisions based on this information. This method allows the routers to dynamically update their routing tables and adapt to changes in the network topology.

The administrative distance of this route is 1. Administrative distance is a measure of the trustworthiness of a routing protocol or route source. A lower administrative distance indicates a more reliable source. In this case, an administrative distance of 1 means that the static route is the most reliable and will be preferred over other routes with higher administrative distances.

The value of the metric from router A to network 192.168.5.0/24 is 3.

For a network to have converged, it is essential that the routers in the network are operating with consistent routing knowledge. This means that all routers in the network should have the same understanding of the network topology and the paths to reach different destinations. If there is inconsistency in the routing knowledge among the routers, it can lead to routing loops, suboptimal routing decisions, or even network instability. Therefore, consistent routing knowledge is crucial for the proper functioning and stability of a network.

EIGRP uses bandwidth as a metric because it calculates the metric based on the available bandwidth on a link. OSPF uses cost based on bandwidth as a metric because it calculates the metric based on the cost of the link, which is derived from the bandwidth.

Classless routing protocols send subnet mask information in routing updates, which allows for more efficient routing and better utilization of IP address space. Additionally, classless routing protocols, such as CIDR (Classless Inter-Domain Routing), support the use of variable length subnet masks (VLSM), which enables the use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same network topology. This flexibility in subnetting allows for more efficient allocation of IP addresses and better scalability in network design.

A distance vector routing protocol would be efficient in a network that is using a hub and spoke topology because in this type of network, there is a central hub that connects to multiple spoke routers. The distance vector protocol, such as RIP (Routing Information Protocol), is well-suited for this scenario as it relies on each router sharing its routing table with its directly connected neighbors, allowing for easy and efficient routing updates.

Additionally, a distance vector protocol would be efficient in a network that is using a flat design. In a flat design, all routers are connected to each other in a single layer without any hierarchical structure. Distance vector protocols can handle this type of network efficiently as they make routing decisions based on the distance or metric to a destination network, without considering any complex network hierarchy.