1.
Which command will show the administrative distance of routes?
Correct Answer
B. R1#
show ip route
Explanation
The correct answer is "show ip route". This command displays the routing table on the router, including the administrative distance of each route. The administrative distance is a metric used by routers to determine the trustworthiness of a particular route. A lower administrative distance indicates a more reliable route.
2.
How many equal-cost paths can a dynamic routing protocol use for load balancing bydefault?
Correct Answer
A. 2
Explanation
A dynamic routing protocol can use two equal-cost paths for load balancing by default. This means that the routing protocol can distribute network traffic across two different paths that have the same cost, allowing for better utilization of available network resources and improving overall network performance. By dividing the traffic between these two paths, the protocol can achieve load balancing and prevent congestion on a single path.
3.
When do directly connected networks appear in the routing table?
Correct Answer
D. As soon as they are addressed and operational at Layer 3
Explanation
Directly connected networks appear in the routing table as soon as they are addressed and operational at Layer 3. This means that when a network interface on a router is configured with an IP address and is able to communicate with other devices on the same network, the router will add that network to its routing table. This allows the router to know that it can directly reach that network without needing to go through any other routers.
4.
Router R1 is using the RIPv2 routing protocol and has discovered multiple unequalpaths to reach a destination network. How will Router R1 determine which path is thebest path to the destination network?
Correct Answer
A. Lowest metric.
Explanation
Router R1 will determine the best path to the destination network based on the lowest metric. The metric is a value assigned to each path, indicating the cost or preference of that path. In RIPv2, the metric is typically based on factors such as hop count, bandwidth, delay, reliability, and load. By selecting the path with the lowest metric, Router R1 ensures that it chooses the path with the least cost or best conditions to reach the destination network.
5.
Which statement best describes convergence on a network?
Correct Answer
B. The time required for the routers in the network to update their routing tables after a
topology change has occurred
Explanation
Convergence on a network refers to the time it takes for routers in the network to update their routing tables after a topology change has occurred. This means that when there is a change in the network's topology, such as a link failure or a new connection, the routers need to adjust their routing tables to reflect the new paths and ensure efficient data transmission. The faster the convergence, the quicker the network can adapt to changes and continue functioning properly.
6.
Designate the following characteristics as belonging to either a classful routing proto-col or a classless routing protocol.1. Does not support discontiguous networks
Correct Answer
classfull routing protocol
Explanation
A classful routing protocol is a type of routing protocol that does not support discontiguous networks. In classful routing, networks are divided into predefined classes based on their size, and the routing protocol assumes that all networks within a class have the same subnet mask. This means that classful routing protocols do not have the ability to route traffic to discontiguous networks, which are networks that are not adjacent or connected. Therefore, the given characteristic of "Does not support discontiguous networks" belongs to a classful routing protocol.
7.
Designate the following characteristics as belonging to either a classful routing proto-col or a classless routing protocol.EIGRP, OSPF, and BGP:
Correct Answer
classless routing protocol
Explanation
EIGRP, OSPF, and BGP are all examples of classless routing protocols. Classless routing protocols do not use fixed network classes (such as Class A, B, or C) to determine network boundaries. Instead, they use variable length subnet masks (VLSM) to allow for more efficient use of IP address space. Classless routing protocols can support the use of subnetting and supernetting, allowing for more flexibility in network design and address allocation.
8.
Designate the following characteristics as belonging to either a classful routing proto-col or a classless routing protocol.Sends subnet mask in its routing updates:
Correct Answer
classless routing protocol
Explanation
Classful routing protocols do not send subnet masks in their routing updates. They assume a default subnet mask based on the class of the IP address. Classless routing protocols, on the other hand, send subnet masks in their routing updates, allowing for more flexible and efficient routing. This allows for the use of variable length subnet masks (VLSM) and the ability to subnet a network into smaller subnets.
9.
Designate the following characteristics as belonging to either a classful routing proto-col or a classless routing protocol.Supports discontiguous networks:
Correct Answer
classless routing protocol
Explanation
Classful routing protocols do not support discontiguous networks, meaning that the network must be contiguous or continuous. Classless routing protocols, on the other hand, do support discontiguous networks. This means that classless routing protocols allow for the division of a network into smaller subnets, even if they are not physically connected. Therefore, the given answer that "classless routing protocol" supports discontiguous networks is correct.
10.
Designate the following characteristics as belonging to either a classful routing proto-col or a classless routing protocol.RIP version 1 and IGRP:
Correct Answer
classfull routing protocol
Explanation
RIP version 1 and IGRP are both examples of classful routing protocols. Classful routing protocols do not include subnet mask information in their routing updates and assume that all networks within a major network have the same subnet mask. Therefore, they do not support variable length subnet masking (VLSM) or the use of different subnet masks within the same major network. RIP version 1 and IGRP both adhere to this classful routing behavior.
11.
R2#show ip route Gateway of last resort is not setD 192.168.1.0/24 [90/2172416] via 192.168.2.1, 00:00:24, Serial0/0C 192.168.2.0/24 is directly connected, Serial0/0/0C 192.168.3.0/24 is directly connected, FastEthernet0/0C 192.168.4.0/24 is directly connected, Serial0/0/1R 192.168.5.0/24 [120/1] via 192.168.4.1, 00:00:08, Serial0/0/1D 192.168.6.0/24 [90/2172416] via 192.168.2.1, 00:00:24, Serial0/0/0R 192.168.7.0/24 [120/1] via 192.168.4.1, 00:00:08, Serial0/0/1R 192.168.8.0/24 [120/2] via 192.168.4.1, 00:00:08, Serial0/0/1Network 192.168.5.0/24 is 1 hop away from R2
Correct Answer
A. True
Explanation
The given output of the "show ip route" command shows the routing table of R2. The line "R 192.168.5.0/24 [120/1] via 192.168.4.1, 00:00:08, Serial0/0/1" indicates that the network 192.168.5.0/24 is reachable via the next hop IP address 192.168.4.1, which is connected to the Serial0/0/1 interface. Since the next hop is only one hop away from R2, the statement "Network 192.168.5.0/24 is 1 hop away from R2" is true.
12.
R2#show ip route Gateway of last resort is not setD 192.168.1.0/24 [90/2172416] via 192.168.2.1, 00:00:24, Serial0/0C 192.168.2.0/24 is directly connected, Serial0/0/0C 192.168.3.0/24 is directly connected, FastEthernet0/0C 192.168.4.0/24 is directly connected, Serial0/0/1R 192.168.5.0/24 [120/1] via 192.168.4.1, 00:00:08, Serial0/0/1D 192.168.6.0/24 [90/2172416] via 192.168.2.1, 00:00:24, Serial0/0/0R 192.168.7.0/24 [120/1] via 192.168.4.1, 00:00:08, Serial0/0/1R 192.168.8.0/24 [120/2] via 192.168.4.1, 00:00:08, Serial0/0/1Refer to the Exhibit: Network 192.168.1.0 was learned through EIGRP routing protocol with the cost of 90
Correct Answer
B. False
Explanation
The given output shows the routing table of the router using the "show ip route" command. The line "D 192.168.1.0/24 [90/2172416] via 192.168.2.1" indicates that the network 192.168.1.0/24 is learned through EIGRP with a cost of 90. Therefore, the statement "Network 192.168.1.0 was learned through EIGRP routing protocol with the cost of 90" is true.
13.
R2#show ip route<output omitted>Gateway of last resort is not setD 192.168.1.0/24 [90/2172416] via 192.168.2.1, 00:00:24, Serial0/0C 192.168.2.0/24 is directly connected, Serial0/0/0C 192.168.3.0/24 is directly connected, FastEthernet0/0C 192.168.4.0/24 is directly connected, Serial0/0/1R 192.168.5.0/24 [120/1] via 192.168.4.1, 00:00:08, Serial0/0/1D 192.168.6.0/24 [90/2172416] via 192.168.2.1, 00:00:24, Serial0/0/0R 192.168.7.0/24 [120/1] via 192.168.4.1, 00:00:08, Serial0/0/1R 192.168.8.0/24 [120/2] via 192.168.4.1, 00:00:08, Serial0/0/1Network 192.168.4.0 is directly connected to R2
Correct Answer
A. True
Explanation
The given output shows that the network 192.168.4.0 is directly connected to R2. This is indicated by the line "C 192.168.4.0/24 is directly connected, Serial0/0/1". Therefore, the statement "Network 192.168.4.0 is directly connected to R2" is true.
14.
R2#show ip route<output omitted>Gateway of last resort is not setD 192.168.1.0/24 [90/2172416] via 192.168.2.1, 00:00:24, Serial0/0C 192.168.2.0/24 is directly connected, Serial0/0/0C 192.168.3.0/24 is directly connected, FastEthernet0/0C 192.168.4.0/24 is directly connected, Serial0/0/1R 192.168.5.0/24 [120/1] via 192.168.4.1, 00:00:08, Serial0/0/1D 192.168.6.0/24 [90/2172416] via 192.168.2.1, 00:00:24, Serial0/0/0R 192.168.7.0/24 [120/1] via 192.168.4.1, 00:00:08, Serial0/0/1R 192.168.8.0/24 [120/2] via 192.168.4.1, 00:00:08, Serial0/0/1Destination IP packet 192.168.2.200 will be forwarded to R2 S0/0/1
Correct Answer
B. False
Explanation
The given output of the "show ip route" command shows that the network 192.168.2.0/24 is directly connected to R2's Serial0/0/0 interface, not Serial0/0/1. Therefore, any destination IP packet for 192.168.2.200 will not be forwarded to R2 S0/0/1. Hence, the correct answer is False.