CCNA Tcsa 14 - Routing Exam
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CCNA TCSA 14 - Routing Exam
- 1.
Refer to the routing table shown in the exhibit. What is the meaning of the highlighted value 192?
- A.
It is the value assigned by the Dijkstra algorithm that designates the number of hops in the network.
- B.
It is the value used by the DUAL algorithm to determine the bandwidth for the link.
- C.
It is the metric, which is cost.
- D.
It is the administrative distance.
Correct Answer
C. It is the metric, which is cost.Explanation
The highlighted value 192 represents the metric or cost in the routing table. This metric is used to determine the best path or route to a destination. In this case, a lower metric value indicates a better or more efficient route. The value of 192 indicates the cost associated with the corresponding route.Rate this question:
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- 2.
What is the purpose of the TTL field within an IP packet header?
- A.
Clears an unreachable route from the routing table after the invalid timer expires
- B.
Prevents regular update messages from inappropriately reinstating a route that may have gone bad
- C.
Removes an unreachable route from the routing table after the flush timer expires
- D.
Limits the period of time or number of hops a packet can traverse through the network before it should be discarded
- E.
Used to mark the route as unreachable in a routing update that is sent to other routers
Correct Answer
D. Limits the period of time or number of hops a packet can traverse through the network before it should be discardedExplanation
The TTL (Time to Live) field within an IP packet header is used to limit the period of time or number of hops a packet can traverse through the network before it should be discarded. This helps prevent packets from endlessly circulating in the network and ensures that they are eventually dropped if they cannot reach their destination within a certain time or hop limit.Rate this question:
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- 3.
Which routing protocol maintains a topology table separate from the routing table?
- A.
IGRP
- B.
RIPv1
- C.
RIPv2
- D.
EIGRP
Correct Answer
D. EIGRPExplanation
EIGRP (Enhanced Interior Gateway Routing Protocol) maintains a separate topology table from the routing table. This topology table contains detailed information about the network's topology, such as the best routes, metrics, and feasible successors. The routing table, on the other hand, only contains the best routes to reach a destination. By keeping the topology table separate, EIGRP can quickly adapt to network changes and make efficient routing decisions.Rate this question:
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- 4.
A router has learned two equal cost paths to a remote network via the EIGRP and RIP protocols. Both protocols are using their default configurations. Which path to the remote network will be installed in the routing table?
- A.
The path learned via EIGRP
- B.
The path learned via RIP
- C.
The path with the highest metric value
- D.
Both paths with load balancing
Correct Answer
A. The path learned via EIGRPExplanation
When a router learns multiple equal cost paths to a remote network via different routing protocols, it will prioritize the path learned via the routing protocol with the lowest administrative distance. In this case, since both EIGRP and RIP are using their default configurations, EIGRP has a lower administrative distance (90) compared to RIP (120). Therefore, the path learned via EIGRP will be installed in the routing table.Rate this question:
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- 5.
Refer to the exhibit. Host A is unable to access the Internet. What is the reason for this?
- A.
The IP address of host A is incorrect.
- B.
The default gateway of host A is incorrect.
- C.
The Fa0/1 interfaces of the two routers are configured for different subnets.
- D.
The subnet mask for the Fa0/0 interface of R1 is incorrect.
Correct Answer
C. The Fa0/1 interfaces of the two routers are configured for different subnets.Explanation
The reason why Host A is unable to access the Internet is because the Fa0/1 interfaces of the two routers are configured for different subnets. This means that the routers are not able to properly route the traffic from Host A to the Internet. The subnet configuration needs to be corrected in order for Host A to access the Internet.Rate this question:
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- 6.
Refer to the exhibit. Routers R1 and R2 are directly connected via their serial interfaces and are both running the EIGRP routing protocol. R1 and R2 can ping the directly connected serial interface of their neighbor, but they cannot form an EIGRP neighbor adjacency. What action should be taken to solve this problem?
- A.
Enable the serial interfaces of both routers.
- B.
Configure EIGRP to send periodic updates.
- C.
Configure the same hello interval between the routers.
- D.
Configure both routers with the same EIGRP process ID.
Correct Answer
D. Configure both routers with the same EIGRP process ID.Explanation
The routers R1 and R2 are directly connected and running the EIGRP routing protocol. However, they are unable to form an EIGRP neighbor adjacency. This issue can be resolved by configuring both routers with the same EIGRP process ID. The EIGRP process ID is used to identify the EIGRP routing process running on a router. By configuring both routers with the same process ID, they will be able to recognize each other as neighbors and form an adjacency.Rate this question:
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- 7.
Which statement correctly describes a feature of RIP?
- A.
RIP is a link-state routing protocol.
- B.
RIP uses only one metric—hop count— for path selection.
- C.
Advertised routes with hop counts greater than 10 are unreachable.
- D.
Messages are broadcast every 10 seconds.
Correct Answer
B. RIP uses only one metric—hop count— for path selection.Explanation
RIP, or Routing Information Protocol, is a distance-vector routing protocol. It uses the hop count as the metric to determine the best path for routing packets. This means that RIP considers the number of routers or hops that a packet must traverse to reach its destination. RIP does not take into account other factors such as bandwidth or delay. Therefore, the statement "RIP uses only one metric—hop count— for path selection" accurately describes a feature of RIP.Rate this question:
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- 8.
Refer to the exhibit. Which combination of IP address and subnet mask can be used on the serial interface of Router2 in order to put the interface in the same network as the serial interface of Router1?
- A.
IP 172.16.0.18, subnet mask 255.255.255.0
- B.
IP 172.16.32.15, subnet mask 255.255.255.240
- C.
IP 172.16.0.18, subnet mask 255.255.255.252
- D.
IP 172.16.32.18, subnet mask 255.255.255.252
Correct Answer
D. IP 172.16.32.18, subnet mask 255.255.255.252Explanation
The IP address and subnet mask combination of 172.16.32.18 and 255.255.255.252 can be used on the serial interface of Router2 in order to put the interface in the same network as the serial interface of Router1. This is because both IP addresses fall within the same network range of 172.16.32.16 to 172.16.32.19, and the subnet mask of 255.255.255.252 allows for only 2 usable host addresses, which is sufficient for the two serial interfaces to communicate with each other.Rate this question:
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- 9.
A network administrator is in charge of two separate networks that share a single building. What device will be required to connect the two networks and add a common connection to the Internet that can be shared?
- A.
Hub
- B.
Router
- C.
Access point
- D.
Ethernet switch
Correct Answer
B. RouterExplanation
A router is required to connect the two separate networks and add a common connection to the Internet that can be shared. A router is a networking device that forwards data packets between computer networks. It determines the best path for data transmission and can connect multiple networks together, allowing devices from different networks to communicate with each other. In this scenario, the router will connect the two separate networks in the building and provide a shared connection to the Internet for both networks.Rate this question:
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- 10.
Refer to the exhibit. The network is configured for RIPv2 routing. What path will a packet from router A take to reach the LAN that is attached to router F if the 56 kb/s link between router A and router E fails?
- A.
A, B, C, F
- B.
A, B, C, E, F
- C.
A, D, G, H, F
- D.
A, D, G, E, F
- E.
A, D, G, E, H, F
Correct Answer
A. A, B, C, FExplanation
If the 56 kb/s link between router A and router E fails, the packet from router A will take the path A, B, C, F to reach the LAN attached to router F. This is because router A is directly connected to router B, which is directly connected to router C, and finally router C is directly connected to router F. Therefore, the packet will traverse these routers in sequence to reach its destination.Rate this question:
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- 11.
Which feature of RIPv2 enables it to function as a classless routing protocol?
- A.
Subnet masks are included in routing updates.
- B.
Routing updates are triggered by topology changes.
- C.
Next-hop addresses are included in routing updates.
- D.
Multicast addresses are used to send routing updates.
Correct Answer
A. Subnet masks are included in routing updates.Explanation
The feature of including subnet masks in routing updates enables RIPv2 to function as a classless routing protocol. By including subnet masks, RIPv2 can support variable length subnet masks (VLSM) and route to specific subnets within a network, rather than just the network as a whole. This allows for more efficient use of IP addresses and more precise routing decisions.Rate this question:
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- 12.
Refer to the exhibit. Which solution provides the most efficient use of router resources for forwarding traffic between BR and HQ?
- A.
RIP
- B.
RIPv2
- C.
EIGRP
- D.
Static routes
Correct Answer
D. Static routesExplanation
Static routes provide the most efficient use of router resources for forwarding traffic between BR and HQ. Unlike dynamic routing protocols like RIP, RIPv2, and EIGRP, static routes do not require the router to continuously exchange routing updates with other routers in the network. Static routes are manually configured by the network administrator and remain unchanged unless manually modified. This reduces the overhead on router resources and provides a more efficient and stable routing solution for forwarding traffic between BR and HQ.Rate this question:
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- 13.
Refer to the exhibit. A network administrator configures a static route on router R1 to reach the 192.168.1.0/24 network. Which IP address should be used as the next-hop address in the ip route command?
- A.
192.168.1.1
- B.
192.168.2.1
- C.
192.135.250.1
- D.
192.135.250.2
Correct Answer
D. 192.135.250.2Explanation
The IP address 192.135.250.2 should be used as the next-hop address in the ip route command because it is the address that will direct traffic to the 192.168.1.0/24 network.Rate this question:
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- 14.
You have been asked to explain converged networks to a trainee. How would you accurately describe a converged network?
- A.
A network is converged when all routers have formed an adjacency.
- B.
A network is converged immediately after a topology change has occurred.
- C.
A network is converged when all routers flush the unreachable networks from their routing tables.
- D.
A network is converged after all routers share the same information, calculate best paths, and update their routing tables.
Correct Answer
D. A network is converged after all routers share the same information, calculate best paths, and update their routing tables.Explanation
A converged network refers to a state where all routers in a network have shared the same information, calculated the best paths, and updated their routing tables accordingly. This ensures that the routers have reached a consistent and optimal state in terms of routing. It does not necessarily mean that all routers have formed an adjacency or that the network is immediately converged after a topology change. Instead, it focuses on the synchronization and updating of routing information among routers to achieve an efficient and reliable network.Rate this question:
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- 15.
A network administrator is troubleshooting a RIPv2 network that is not converging as expected. Which command can the administrator use on each router to view the RIPv2 updates as they are received?
- A.
Debug ip rip
- B.
Show ip route
- C.
Debug ip routing
- D.
Show ip protocols
Correct Answer
A. Debug ip ripExplanation
The correct answer is "debug ip rip". This command enables the administrator to view the RIPv2 updates as they are received, helping them troubleshoot the network convergence issue. By enabling RIP debugging, the administrator can see the routing updates in real-time, allowing them to identify any potential issues or misconfigurations in the network.Rate this question:
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.jpg "Refer to the routing table shown in the exhibit. What is the meaning of the highlighted value 192?")
.jpg "Refer to the exhibit. Host A is unable to access the Internet. What is the reason for this?")
.jpg "Refer to the exhibit. Routers R1 and R2 are directly connected via their serial interfaces and are both running the EIGRP routing protocol. R1 and R2 can ping the directly connected serial interface of their neighbor, but they cannot form an EIGRP neighbor adjacency.
What action should be taken to solve this problem?")
.jpg "Refer to the exhibit. Which combination of IP address and subnet mask can be used on the serial interface of Router2 in order to put the interface in the same network as the serial interface of Router1?")
.jpg "Refer to the exhibit. The network is configured for RIPv2 routing. What path will a packet from router A take to reach the LAN that is attached to router F if the 56 kb/s link between router A and router E fails?")
.jpg "Refer to the exhibit. Which solution provides the most efficient use of router resources for forwarding traffic between BR and HQ?")
.jpg "Refer to the exhibit. A network administrator configures a static route on router R1 to reach the 192.168.1.0/24 network. Which IP address should be used as the next-hop address in the ip route command?")
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Apr 12, 2024Quiz Edited by
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Apr 15, 2013Quiz Created by
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