Ccna2 Final Exam 2013 – Version 2
(14).webp "Ccna2 Final Exam 2013 Version 2 - Quiz")
- 1.
Which of the following are required when adding a network to the OSPF routing process configuration? (Choose three.)
- A.
Network address
- B.
Loopback address
- C.
Autonomous system number
- D.
Subnet mask
- E.
Wildcard mask
- F.
Area ID
Correct Answer(s)
A. Network address
E. Wildcard mask
F. Area IDExplanation
When adding a network to the OSPF routing process configuration, three things are required. The network address is needed to specify the network that will be included in the OSPF routing process. The wildcard mask is used to determine which IP addresses within the network will be included. The area ID is required to identify the OSPF area to which the network will be assigned. The loopback address, autonomous system number, and subnet mask are not required for adding a network to the OSPF routing process configuration.Rate this question:
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- 2.
Which of the following are primary functions of a router? (Choose two.)
- A.
Packet switching
- B.
Microsegmentation
- C.
Domain name resolution
- D.
Path selection
- E.
Flow control
Correct Answer(s)
A. Packet switching
D. Path selectionExplanation
Routers perform packet switching, which involves receiving data packets from one network and forwarding them to the appropriate network based on the destination IP address. This enables data to be transmitted efficiently across different networks. Additionally, routers also perform path selection by determining the best path for data packets to travel through the network. This involves analyzing factors such as network congestion, latency, and available bandwidth to ensure optimal data transmission.Rate this question:
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- 3.
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 in the routing table represents the metric or cost. In routing, the metric is used to determine the most optimal path for forwarding packets. It indicates the cost associated with a particular route, such as the number of hops, bandwidth, delay, or any other factor considered in the routing algorithm. In this case, the value 192 signifies the cost of the route, with lower values typically indicating a more preferred or efficient path.Rate this question:
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- 4.
Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling througha router? (Choose three.)
- A.
The router modifies the TTL field, decrementing it by one.
- B.
The router changes the source IP to the IP of the exit interface.
- C.
The router maintains the same source and destination IP.
- D.
The router changes the source physical address to the physical address of the exit interface.
- E.
The router changes the destination IP to the IP of the exit interface.
- F.
The router sends the packet out all other interfaces, besides the one it entered the router on.
Correct Answer(s)
A. The router modifies the TTL field, decrementing it by one.
C. The router maintains the same source and destination IP.
D. The router changes the source pHysical address to the pHysical address of the exit interface.Explanation
When packets travel through a router, the router modifies the TTL (Time to Live) field by decrementing it by one. This is done to prevent packets from circulating indefinitely in the network. The router also maintains the same source and destination IP addresses, as these are essential for proper routing. However, the router changes the source physical address to the physical address of the exit interface. This is necessary because the physical address (MAC address) is specific to each interface on the router.Rate this question:
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- 5.
Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to get to the 10.0.0.0/24 network?
- A.
ADC
- B.
ABC
- C.
It will load balance the traffic between ADC and ABC
- D.
It will send the traffic via ABC, and will use ADC as a backup path only when ABC fails.
Correct Answer
C. It will load balance the traffic between ADC and ABCExplanation
The traffic from the 172.16.1.0/24 network will be load balanced between ADC and ABC. This means that the traffic will be evenly distributed between the two paths, allowing for efficient utilization of both paths.Rate this question:
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- 6.
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 ensures that packets do not circulate indefinitely in the network, preventing congestion and ensuring efficient routing. Once the TTL value reaches zero, the packet is discarded by the router. The TTL field is decremented by each router that the packet passes through, allowing for a maximum number of hops before the packet is discarded.Rate this question:
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- 7.
Refer to the exhibit. How many routes are both level 1 and qualify for use as an ultimate route?
- A.
1
- B.
2
- C.
3
- D.
4
- E.
5
- F.
6
Correct Answer
B. 2Explanation
Based on the given exhibit, there are two routes that are both level 1 and qualify for use as an ultimate route.Rate this question:
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- 8.
Refer to the exhibit. Cost for each path are shown. If all routers are configured to use OSPF, what would be the path of a packet sent from Router C to Router D if Router A was down?
- A.
C-B-E-D
- B.
C-B-A-D
- C.
C-F-E-D
- D.
C-F-B-A-D
- E.
C-F-E-A-D
Correct Answer
C. C-F-E-DExplanation
If Router A is down, the packet sent from Router C to Router D would follow the path C-F-E-D.Rate this question:
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- 9.
Refer to the exhibit. Routers 1 and 2 are directly connected over a serial link. Pings are failing between the two routers. What change by the administrator will correct the problem?
- A.
Set the encapsulation on both routers to PPP.
- B.
Decrease the bandwidth on Serial 0/1/0 on router 2 to 1544.
- C.
Change the cable that connects the routers to a crossover cable.
- D.
Change the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30.
Correct Answer
D. Change the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30.Explanation
Changing the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30 will correct the problem. This is because both routers are directly connected over a serial link, and in order for them to communicate with each other, they need to have IP addresses within the same subnet. By changing the IP address on router 2 to 192.168.0.1/30, it will be in the same subnet as the IP address on router 1, allowing them to successfully ping each other.Rate this question:
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- 10.
Refer to the exhibit. A network administrator is trying to determine why router JAX has no OSPF routes in its routing table. All routers are configured for OSPF area 0. From the JAX router, the administrator is able to ping its connected interfaces and the Fa0/1 interface of the ORL router but no other router interfaces. What is a logical step that the network administrator should take to troubleshoot the problem?
- A.
Reboot the routers.
- B.
Change the OSPF process ID on all of the routers to 0.
- C.
Check to see if the cable is loose between ORL and JAX.
- D.
Check to see if CDP packets are passing between the routers.
- E.
Use show and debug commands to determine if hellos are propagating
Correct Answer
E. Use show and debug commands to determine if hellos are propagatingExplanation
The network administrator should use show and debug commands to determine if hellos are propagating. This step will help in identifying if there is an issue with OSPF hellos being sent and received between the routers. By analyzing the output of these commands, the administrator can determine if there is a problem with the OSPF adjacency formation or if the hellos are not reaching the JAX router. This will provide valuable information for troubleshooting the OSPF routing issue on the JAX router.Rate this question:
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- 11.
Refer to the exhibit. Which summarization should R1 use to advertise its networks to R2?
- A.
192.168.1.0/24
- B.
192.168.0.0/24
- C.
192.168.0.0/22
- D.
192.168.1.0/22
Correct Answer
C. 192.168.0.0/22Explanation
R1 should use the summarization 192.168.0.0/22 to advertise its networks to R2. This summarization includes both the networks 192.168.1.0/24 and 192.168.0.0/24, as well as additional subnets within the range of 192.168.0.0/22. By using this summarization, R1 can advertise a single route to R2 that encompasses all the necessary networks, reducing the routing table size and improving efficiency.Rate this question:
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- 12.
A router boots and enters setup mode. What is the reason for this?
- A.
The IOS image is corrupt.
- B.
Cisco IOS is missing from flash memory.
- C.
The configuration file is missing from NVRAM.
- D.
The POST process has detected hardware failure.
Correct Answer
C. The configuration file is missing from NVRAM.Explanation
The reason for the router booting and entering setup mode is that the configuration file is missing from NVRAM. NVRAM (Non-Volatile Random Access Memory) is a type of memory that stores the router's configuration settings. If the configuration file is missing from NVRAM, the router will not be able to load the previous configuration and will enter setup mode, allowing the user to reconfigure the router.Rate this question:
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- 13.
Refer to the exhibit. R1 is configured properly for a single area OSPF, and R2 has been recently installed in the network. Which set of commands is required to configure a single area OSPF for the networks that are connected to R2?
- A.
R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config-router)# network 10.1.1.0 0.0.0.3 area 0
- B.
R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config)# router ospf 2 R2(config-router)# network 10.1.1.0 0.0.0.3 area 0 R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0
- C.
R2(config-router)# network 10.1.1.0 0.0.0.3 area 1 R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config-router)# network 10.0.0.0 0.0.0.3 area 1
Correct Answer
A. R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config-router)# network 10.1.1.0 0.0.0.3 area 0Explanation
The correct set of commands to configure a single area OSPF for the networks connected to R2 is to enter the OSPF configuration mode with the "router ospf 1" command, specify the networks to be included in the OSPF process using the "network" command, and assign them to area 0. In this case, the networks 192.168.2.0/24 and 10.1.1.0/30 are being configured for area 0.Rate this question:
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- 14.
Refer to the exhibit. Routers R1 and R2 are directly connected via theirserial 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 IDExplanation
The routers R1 and R2 are directly connected via their serial interfaces and are running the EIGRP routing protocol. They can ping each other's directly connected serial interfaces, but they cannot form an EIGRP neighbor adjacency. This suggests that there is a mismatch in the EIGRP process ID between the routers. To solve this problem, both routers should be configured with the same EIGRP process ID. By doing so, they will be able to recognize each other as neighbors and form the EIGRP neighbor adjacency.Rate this question:
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- 15.
Refer to the exhibit. The hosts that are connected to R2 are unable to ping the hosts that are connected to R1. How can this problem be resolved?
- A.
Configure the router ID on both routers.
- B.
Configure the R2 router interfaces for area 0.
- C.
Configure a loopback interface on both routers.
- D.
Configure the proper subnet masks on the router interfaces.
Correct Answer
B. Configure the R2 router interfaces for area 0.Explanation
To resolve the problem of hosts connected to R2 being unable to ping hosts connected to R1, the R2 router interfaces need to be configured for area 0. This suggests that the issue is related to the OSPF configuration. By configuring the router interfaces for area 0, R2 will become part of the OSPF routing domain and will be able to exchange routing information with R1, allowing the hosts to establish connectivity. The other options mentioned in the question, such as configuring the router ID, configuring a loopback interface, or configuring subnet masks, do not directly address the issue of OSPF routing between R1 and R2.Rate this question:
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- 16.
In a lab test environment, a router has learned about network 172.16.1.0 through four different dynamic routing processes. Which route will be used to reach this network?
- A.
D 172.16.1.0/24 [90/2195456] via 192.168.200.1, 00:00:09, Serial0/0/0
- B.
O 172.16.1.0/24 [110/1012] via 192.168.200.1, 00:00:22, Serial0/0/0
- C.
R 172.16.1.0/24 [120/1] via 192.168.200.1, 00:00:17, Serial0/0/0
- D.
I 172.16.1.0/24 [100/1192] via 192.168.200.1, 00:00:09, Serial0/0/0
Correct Answer
A. D 172.16.1.0/24 [90/2195456] via 192.168.200.1, 00:00:09, Serial0/0/0Explanation
The answer indicates that the route used to reach network 172.16.1.0 is the one learned through the dynamic routing process denoted by "D". The other routes learned through processes "O", "R", and "I" have different metrics or administrative distances, which are higher than the metric of the "D" route. Therefore, the router will choose the route with the lowest metric to reach the network.Rate this question:
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- 17.
Which statement is true about the metrics used by routing protocols?
- A.
A metric is a value used by a particular routing protocol to compare paths to remote networks.
- B.
A common metric is used by all routing protocols.
- C.
The metric with the highest value is installed in the routing table.
- D.
The router may use only one parameter at a time to calculate the metric
Correct Answer
A. A metric is a value used by a particular routing protocol to compare paths to remote networks.Explanation
A metric is a value used by a particular routing protocol to compare paths to remote networks. Routing protocols use metrics to determine the best path for forwarding data packets. Each routing protocol may use its own specific metric, such as hop count, bandwidth, delay, or reliability, to evaluate and compare different paths. By assigning a metric to each available path, the routing protocol can determine the most efficient route to a destination network and update the routing table accordingly. Therefore, the statement that a metric is a value used by a particular routing protocol to compare paths to remote networks is true.Rate this question:
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- 18.
Refer to the exhibit. Both routers are using the RIPv2 routing protocol and static routes are undefined. R1 can ping192.168.2.1 and 10.1.1.2, but is unable to ping 192.168.4.1.What is the reason for the ping failure?
- A.
The serial interface between two routers is down.
- B.
R2 is not forwarding the routing updates.
- C.
The 192.168.4.0 network is not included in the RIP configuration of R2.
- D.
RIPv1 needs to be configured.
Correct Answer
C. The 192.168.4.0 network is not included in the RIP configuration of R2.Explanation
The reason for the ping failure is that the 192.168.4.0 network is not included in the RIP configuration of R2. This means that R2 is not advertising the 192.168.4.0 network to R1, so R1 does not have a route to reach that network. Therefore, R1 is unable to ping 192.168.4.1.Rate this question:
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- 19.
Which two statements are true about the EIGRP successor route? (Choose two.)
- A.
It is saved in the topology table for use if the primary route fails.
- B.
It may be backed up by a feasible successor route.
- C.
It is used by EIGRP to forward traffic to the destination.
- D.
It is flagged as active in the routing table.
- E.
After the discovery process has occurred, the successor route is stored in the neighbor table
Correct Answer(s)
B. It may be backed up by a feasible successor route.
C. It is used by EIGRP to forward traffic to the destination.Explanation
The EIGRP successor route may be backed up by a feasible successor route, which provides an alternative path to the destination in case the primary route fails. The successor route is also used by EIGRP to forward traffic to the destination, ensuring efficient routing within the network.Rate this question:
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- 20.
Refer to the exhibit. Hosts on the 192.168.1.0 network cannot communicate with hosts on the 172.16.1.1 network. The network administrator has run the show ip route command on R1. What could be the cause of this problem?
- A.
The FastEthernet interface on R1 is disabled.
- B.
Autosummarization is enabled on R1.
- C.
The serial interface S0/0/0 of R1 is administratively down.
- D.
No static route or routing protocol is configured.
Correct Answer
D. No static route or routing protocol is configured.Explanation
The cause of the problem could be that no static route or routing protocol is configured on R1. Without a static route or routing protocol, R1 does not know how to forward packets between the 192.168.1.0 and 172.16.1.0 networks, resulting in the inability for hosts on these networks to communicate with each other.Rate this question:
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- 21.
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 (Routing Information Protocol) is a distance-vector routing protocol that uses the hop count as its only metric for path selection. This means that when RIP routers exchange routing information, they only consider the number of hops (intermediate routers) to reach a destination network. The route with the least number of hops is chosen as the best path. This simplifies the routing process but may not always result in the most efficient or fastest routes.Rate this question:
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- 22.
Refer to the exhibit. Which two statements are true based on the exhibited output? (Choose two.)
- A.
All routes are stable.
- B.
Each route has one feasible successor.
- C.
The serial interface between the two routers is down.
- D.
The administrative distance of EIGRP has been set to 50.
- E.
The show ip eigrp topology command has been run on R1.
Correct Answer(s)
A. All routes are stable.
E. The show ip eigrp topology command has been run on R1.Explanation
The exhibited output shows the result of running the "show ip eigrp topology" command on R1. This command displays information about the EIGRP topology table, including the routes and their status. Since the output does not mention anything about the serial interface being down or the administrative distance of EIGRP being set to 50, these statements are not true. However, it does indicate that all routes are stable, as there are no reported changes or inconsistencies in the topology. Additionally, the fact that the "show ip eigrp topology" command has been run on R1 is evident from the displayed output.Rate this question:
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- 23.
A network administrator is analyzing routing update behavior on a network that has both EIGRP and OSPFconfigured on all routers. Both protocols appear in the output of show ip protocols. However, only EIGRP internalroutes appear in the routing tables. Which statement correctly explains the scenario?
- A.
The OSPF protocol has a higher cost than EIGRP.
- B.
The EIGRP protocol has a lower metric than OSPF.
- C.
The EIGRP protocol was configured first on the router.
- D.
The EIGRP protocol has a lower administrative distance than OSPF
Correct Answer
D. The EIGRP protocol has a lower administrative distance than OSPFExplanation
The EIGRP protocol has a lower administrative distance than OSPF. Administrative distance is a measure of the trustworthiness of a routing protocol. A lower administrative distance means that a routing protocol is considered more reliable and preferred over a protocol with a higher administrative distance. In this scenario, since only EIGRP internal routes appear in the routing tables, it indicates that EIGRP has a lower administrative distance than OSPF, causing the routers to prefer EIGRP routes over OSPF routes.Rate this question:
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- 24.
Which prompt is used to allow a user to change the IP address of an interface on a router?
- A.
Router>
- B.
Router#
- C.
Router(config)#
- D.
Router(config-if)#
Correct Answer
D. Router(config-if)#Explanation
The correct answer is "Router(config-if)#". This prompt is used to access the interface configuration mode on a router, allowing the user to change the IP address of a specific interface. The "config-if" stands for "configuration interface" and indicates that the user is now in the interface configuration mode, where they can make changes to the IP address and other settings specific to that interface.Rate this question:
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- 25.
Refer to the exhibit. Routers RTRA and RTRB are running OSPF. What entry does RTRA add in the routing tablewhen Serial 0/0/0 receives an update about the network that is attached to RTRB?
- A.
O 172.16.7.0/30 [110/51] via 10.10.10.2, 00:00:25, Serial0/0/0
- B.
O 172.16.7.16/28 [110/51] via 10.10.10.2, 00:00:25, Serial0/0/0
- C.
O 172.16.7.0/24 [110/51] via 10.10.10.2, 00:00:25, Serial0/0/0
- D.
O 172.16.0.0/16 [110/51] via 10.10.10.2, 00:00:25, Serial0/0/0
Correct Answer
B. O 172.16.7.16/28 [110/51] via 10.10.10.2, 00:00:25, Serial0/0/0Explanation
When RTRA receives an update about the network attached to RTRB, it adds an entry in the routing table for that network. The correct entry that RTRA adds in the routing table is "O 172.16.7.16/28 [110/51] via 10.10.10.2, 00:00:25, Serial0/0/0". This entry indicates that the network 172.16.7.16/28 is reachable via the next hop IP address 10.10.10.2, with a metric of 110/51 and an update age of 00:00:25.Rate this question:
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- 26.
Which additional piece of information is included in the updates of classless routing protocols to support the use of VLSM and discontiguous networks?
- A.
Metric
- B.
Network mask
- C.
Neighbor router ID
- D.
Administrative distance
Correct Answer
B. Network maskExplanation
Classless routing protocols support the use of Variable Length Subnet Masking (VLSM) and discontiguous networks. VLSM allows the use of different subnet mask lengths within the same network, resulting in more efficient use of IP addresses. The network mask is the additional piece of information included in the updates of classless routing protocols to support VLSM and discontiguous networks. It specifies the subnet mask that should be used for routing decisions, enabling routers to correctly determine the network boundaries and route packets accordingly.Rate this question:
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- 27.
Because of a topology change, the next hop IP address in the current static route must be reconfigured. How can a static route entry be altered to accommodate a topology change?
- A.
Keep the existing static route and configure a new static route with the correct next hop IP address.
- B.
Negate the existing static route and configure a new static route with the correct next hop IP address.
- C.
Do nothing. The existing static route will automatically update the next hop entry with the new IP address.
- D.
Keep the existing static route, reload the router, and configure a new static route with the correct next hop IP address
Correct Answer
B. Negate the existing static route and configure a new static route with the correct next hop IP address.Explanation
When a topology change occurs, the existing static route needs to be altered to accommodate the change. Negating the existing static route and configuring a new static route with the correct next hop IP address is the correct approach. By negating the existing static route, it is effectively removed, and then a new static route can be created with the updated next hop IP address. This ensures that the routing table is updated correctly and traffic is directed to the appropriate next hop.Rate this question:
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- 28.
Which router mode is accessed by entering the enable command?
- A.
User EXEC
- B.
Privileged EXEC
- C.
Global configuration
- D.
Interface configuration
Correct Answer
B. Privileged EXECExplanation
The correct answer is privileged EXEC. In privileged EXEC mode, users have access to all the commands available on the router, including the ability to configure and manage the device. This mode is accessed by entering the "enable" command from the user EXEC mode.Rate this question:
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- 29.
Refer to the exhibit. An administrator is attempting to configure a router by copying and pasting the commands that are shown in the exhibit. However, only one of the FastEthernet interfaces is coming up. What is the problem?
- A.
Both interfaces are in the same IP subnet.
- B.
FastEthernet0/1 does not have a description.
- C.
There can be only one FastEthernet interface enabled on a router at one time.
- D.
The administrator did not exit to global configuration mode before configuring FastEthernet0/1
Correct Answer
A. Both interfaces are in the same IP subnet.Explanation
The problem is that both interfaces are in the same IP subnet. This means that they have the same network address and cannot communicate with each other. In order for the interfaces to come up, they need to be in different IP subnets.Rate this question:
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- 30.
In an examination of two OSPF routers that fail to exchange information, it is determined that they have not become OSPF neighbors. Which two configuration values must match for the OSPF routers to become neighbors?
- A.
Neighbor ID and router ID
- B.
Dead time and hello time
- C.
OSPF area and neighbor ID
- D.
OSPF area and interface priority
Correct Answer
B. Dead time and hello timeExplanation
The correct answer is "dead time and hello time". In OSPF, routers exchange hello packets to establish and maintain neighbor relationships. The hello time is the interval at which hello packets are sent, and the dead time is the interval after which a neighbor is considered unreachable if no hello packets are received. For two routers to become OSPF neighbors, their hello time and dead time values must match. If these values do not match, the routers will not exchange hello packets and will not establish a neighbor relationship.Rate this question:
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- 31.
Refer to the exhibit. Routers R1 and R3 use different routing protocols with default administrative distance values. All devices are properly configured and the destination network is advertised by both protocols. Which path will be used to transmit the data packets from PC1 to PC2?
- A.
The packets will travel via R2-R1.
- B.
The packets will travel via R2-R3.
- C.
The traffic will be load-balanced between two paths — via R2-R1 and via R2-R3.
- D.
The packets will travel via R2-R3, and the other path via R2-R1 will be retained as the backup path
Correct Answer
A. The packets will travel via R2-R1.Explanation
Since the question states that routers R1 and R3 use different routing protocols with default administrative distance values, it implies that one of the routers has a lower administrative distance than the other. The router with the lower administrative distance will be preferred for routing. In this case, since the packets are traveling from PC1 to PC2, they will follow the path with the lowest administrative distance, which is R2-R1. Therefore, the correct answer is that the packets will travel via R2-R1.Rate this question:
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- 32.
Refer to the exhibit. The network administrator has run the following command on R1. R1(config)# ip route 192.168.2.0 255.255.255.0 172.16.1.2 What is the result of running this command?
- A.
Traffic for network 192.168.2.0 is forwarded to 172.16.1.2.
- B.
This route is automatically propagated throughout the entire network.
- C.
Traffic for all networks is forwarded to 172.16.1.2.
- D.
The command invokes a dynamic routing protocol for 192.168.2.0
Correct Answer
A. Traffic for network 192.168.2.0 is forwarded to 172.16.1.2.Explanation
The command "ip route 192.168.2.0 255.255.255.0 172.16.1.2" on R1 configures a static route. It tells R1 that any traffic destined for network 192.168.2.0 should be forwarded to the next hop IP address 172.16.1.2. Therefore, the result of running this command is that traffic for network 192.168.2.0 is forwarded to 172.16.1.2.Rate this question:
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- 33.
Why is fast convergence desirable in networks that use dynamic routing protocols?
- A.
Hosts are unable to access their gateway until the network is converged.
- B.
Routers will not allow packets to be forwarded until the network is converged.
- C.
Routers may make incorrect forwarding decisions until the network has converged.
- D.
Routers will not allow configuration changes to be made until the network has converged
Correct Answer
C. Routers may make incorrect forwarding decisions until the network has converged.Explanation
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 not fully converged, routers may not have accurate and up-to-date information about the network topology and routing tables. This can lead to packets being forwarded along suboptimal paths or being dropped altogether. Fast convergence ensures that routers quickly exchange routing information and update their forwarding tables, reducing the likelihood of incorrect forwarding decisions and improving overall network performance.Rate this question:
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- 34.
Which two statements about routing protocols are accurate? (Choose two.)
- A.
OSPF supports VLSM.
- B.
RIPv1 supports VLSM.
- C.
RIPv2 does not have a hop count limit.
- D.
EIGRP supports discontiguous network designs.
- E.
RIPv2 does not support discontiguous network designs
Correct Answer(s)
A. OSPF supports VLSM.
D. EIGRP supports discontiguous network designs.Explanation
OSPF supports VLSM, which stands for Variable Length Subnet Masking. This means that OSPF can accommodate networks with different subnet mask lengths, allowing for more efficient use of IP addresses. EIGRP supports discontiguous network designs, meaning that it can route traffic between non-contiguous networks. This is useful in scenarios where a network is divided into multiple separate segments.Rate this question:
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- 35.
Refer to the exhibit. If the EIGRP routing protocol is used throughout the network, which IP address and mask prefixshould be sent by router R1 to the Edge router as a result of manual summarization of LANs A, B, C, and D?
- A.
192.168.4.0/20
- B.
192.168.4.0/22
- C.
192.168.4.0/24
- D.
192.168.4.0/26
Correct Answer
B. 192.168.4.0/22 -
- 36.
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 information with other routers in the network. Static routes are manually configured by the network administrator, allowing for precise control over the routing decisions. This reduces the overhead on the router's CPU and memory, resulting in more efficient resource utilization.Rate this question:
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- 37.
Refer to the exhibit. The network is configured with RIPv2. However, network administrators notice that communication cannot be successfully completed from one LAN to another. A network administrator issues the show ip route command on the HQ router. Based on the output, what should be done to correct the problem?
- A.
Disable the load balancing feature of RIPv2.
- B.
Issue the no auto-summary command for RIPv2.
- C.
Replace RIPv2 with EIGRP which supports VLSM.
- D.
Make sure that the network statements include the correct subnet mask
Correct Answer
B. Issue the no auto-summary command for RIPv2.Explanation
The correct answer is "Issue the no auto-summary command for RIPv2." This is because the output of the "show ip route" command shows that the routes are being summarized, which means that the specific subnets are not being advertised. By issuing the "no auto-summary" command, the router will stop summarizing the routes and will advertise the specific subnets, allowing communication between the LANs to be successfully completed.Rate this question:
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- 38.
Which protocol is used by EIGRP to deliver and receive update packets?
- A.
FTP
- B.
RTP
- C.
TCP
- D.
TFTP
- E.
UDP
Correct Answer
B. RTP -
- 39.
Which multicast address does EIGRP use to send hello and updates packets?
- A.
224.0.0.5
- B.
224.0.0.6
- C.
224.0.0.9
- D.
224.0.0.10
Correct Answer
D. 224.0.0.10Explanation
EIGRP uses the multicast address 224.0.0.10 to send hello and update packets. Multicast addresses are used to send packets to multiple devices at once. In the case of EIGRP, 224.0.0.10 is the designated address for sending routing information to neighboring routers. This allows routers running EIGRP to communicate and exchange routing updates efficiently.Rate this question:
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- 40.
A network administrator is using an application that is monitoring packets on the network and sees an EIGRP update packet. What is the purpose of the update packet?
- A.
The packet is sent to discover neighbors within the EIGRP network.
- B.
The packet is sent to search for network devices within an EIGRP network.
- C.
The packet is used to propagate routing information within the EIGRP network.
- D.
The packet is used to send an unreachable reply to another router within the EIGRP network.
- E.
The packet is used to notify all routers that EIRGP has failed on one of the routers within the EIGRP network
Correct Answer
C. The packet is used to propagate routing information within the EIGRP network.Explanation
The EIGRP update packet is used to propagate routing information within the EIGRP network. This means that the packet is used to share information about network routes and their associated metrics among routers in the EIGRP network. By sharing this information, routers can build and maintain their routing tables, allowing them to determine the best path for forwarding network traffic.Rate this question:
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- 41.
Refer to the exhibit. What OSPF network statements are required for the router B to advertise the three networks that are attached?
- A.
Router ospf 1 network 10.0.0.0 0.0.0.255 area 0
- B.
Router ospf 1 network 10.1.1.0 0.3.255.255 area 0 network 10.10.1.0 0.255.255.255 area 0 network 10.20.1.0 0.255.255.255 area 0
- C.
Router ospf 1 network 10.1.1.0 0.0.0.3 area 0 network 10.10.1.0 0.0.255.255 area 0 network 10.20.1.0 0.0.255.255 area 0
- D.
Router ospf 1 network 10.1.1.0 0.0.0.3 area 0 network 10.10.1.0 0.0.0.255 area 0 network 10.20.1.0 0.0.0.255 area 0
Correct Answer
D. Router ospf 1 network 10.1.1.0 0.0.0.3 area 0 network 10.10.1.0 0.0.0.255 area 0 network 10.20.1.0 0.0.0.255 area 0Explanation
The correct answer is the third option: "router ospf 1 network 10.1.1.0 0.0.0.3 area 0 network 10.10.1.0 0.0.0.255 area 0 network 10.20.1.0 0.0.0.255 area 0". This option correctly specifies the network statements for the three networks that are attached to router B. The first network statement includes the network 10.1.1.0 with a wildcard mask of 0.0.0.3, which covers the range of IP addresses from 10.1.1.0 to 10.1.1.3. The second network statement includes the network 10.10.1.0 with a wildcard mask of 0.0.0.255, which covers the range of IP addresses from 10.10.1.0 to 10.10.1.255. The third network statement includes the network 10.20.1.0 with a wildcard mask of 0.0.0.255, which covers the range of IP addresses from 10.20.1.0 to 10.20.1.255.Rate this question:
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- 42.
Refer to the exhibit. Why is the state of the serial0/0/0 interface administratively down?
- A.
An IP address has not been configured on the interface.
- B.
The WIC was installed into the incorrect slot on the router.
- C.
The default encapsulation on the interface has been modified.
- D.
The no shutdown command has not been executed on the interface
Correct Answer
D. The no shutdown command has not been executed on the interfaceExplanation
The state of the serial0/0/0 interface is administratively down because the "no shutdown" command has not been executed on the interface. This command is used to enable the interface and bring it up. Without executing this command, the interface remains in a shutdown state, resulting in it being administratively down.Rate this question:
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- 43.
On a router, which three components are stored in RAM? (Choose three.)
- A.
POST code
- B.
The routing table
- C.
The running-configuration
- D.
The start-up configuration
- E.
The bootstrap instructions
- F.
A copy of the operating system
Correct Answer(s)
B. The routing table
C. The running-configuration
F. A copy of the operating systemExplanation
In a router, RAM (Random Access Memory) stores the routing table, the running-configuration, and a copy of the operating system. The routing table is stored in RAM to facilitate the forwarding of packets based on destination addresses. The running-configuration is also stored in RAM and contains the current configuration settings of the router. Lastly, a copy of the operating system is stored in RAM to ensure that it can be quickly accessed and executed by the router.Rate this question:
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- 44.
Refer to the exhibit. RouterA and RouterB cannot successfully exchange EIGRP routes. What is the problem?
- A.
The hello intervals do not match.
- B.
The autonomous system numbers do not match.
- C.
The no auto-summary command is missing from both routers.
- D.
The ip bandwidth-percent command is missing from RouterB
Correct Answer
B. The autonomous system numbers do not match.Explanation
The problem is that the autonomous system numbers do not match. EIGRP requires that routers in the same autonomous system have the same autonomous system number in order to successfully exchange routes.Rate this question:
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- 45.
Refer to the exhibit. What is the purpose of the ip bandwidth-percent eigrp 50 10 command?
- A.
To limit the bandwidth EIGRP packets can use to 6.4 kb/s
- B.
To limit the bandwidth EIGRP packets can use to 10 kb/s
- C.
To limit the bandwidth EIGRP packets can use to 32 kb/s
- D.
To limit the bandwidth EIGRP packets can use to 50 kb/s
Correct Answer
A. To limit the bandwidth EIGRP packets can use to 6.4 kb/sExplanation
The purpose of the "ip bandwidth-percent eigrp 50 10" command is to limit the bandwidth that EIGRP packets can use to 6.4 kb/s.Rate this question:
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- 46.
A network administrator adds the default-information originate command to the configuration of a router that uses RIP as the routing protocol. What will result from adding this command?
- A.
The router will be reset to the default factory information.
- B.
The router will not forward routing information that is learned from other routers.
- C.
The router will propagate a static default route in its RIP updates, if one is present.
- D.
The router will only forward packets that originate on directly connected networks
Correct Answer
C. The router will propagate a static default route in its RIP updates, if one is present.Explanation
Adding the "default-information originate" command to a router's configuration using RIP as the routing protocol will result in the router propagating a static default route in its RIP updates, but only if one is present. This means that the router will advertise the default route to other routers in the network, allowing them to use the router as a gateway for any packets with destinations outside of their own network.Rate this question:
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- 47.
A network technician is configuring a Cisco 2811 router. The technician types conf at the privileged level command prompt and presses the TAB key. What action will the router take?
- A.
It will revert to the user mode.
- B.
It will perform an auto-complete function.
- C.
It will go into the global configuration mode.
- D.
It will give an error message that indicates a bad command was entered
Correct Answer
B. It will perform an auto-complete function.Explanation
When the network technician types "conf" at the privileged level command prompt and presses the TAB key, the router will perform an auto-complete function. This means that the router will automatically complete the command or suggest possible commands based on the input provided by the technician. This feature helps to save time and prevent typographical errors by providing a list of available commands or completing the command if there is only one possible option.Rate this question:
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- 48.
What is a function of the console port on a router?
- A.
It is used to manage the router.
- B.
It is used for packet receiving and forwarding.
- C.
It is used to interconnect various types of LANs.
- D.
It is used to interconnect a variety of serial links including T1, DSL, and ISDN
Correct Answer
A. It is used to manage the router.Explanation
The console port on a router is used for managing the router. It provides a direct connection to the router's command-line interface (CLI), allowing administrators to configure and troubleshoot the router. Through the console port, administrators can access the router's configuration, monitor its performance, and make any necessary changes or updates. It is an essential tool for network administrators to maintain and control the router's operations.Rate this question:
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- 49.
Refer to the exhibit. Which route will be installed in the routing table on R1 to forward traffic from PC1 to the web server?
- A.
The static route
- B.
The route learned via OSPF
- C.
The route learned via EIGRP
- D.
Both routes learned via OSPF and EIGRP
Correct Answer
A. The static routeExplanation
The correct answer is the static route. This means that R1 will use a manually configured static route to forward traffic from PC1 to the web server. It will not rely on any dynamic routing protocols like OSPF or EIGRP to determine the best path for forwarding the traffic.Rate this question:
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- 50.
Refer to the exhibit. After the commands are entered, which password will be required to establish a Telnet sessionwith the router?
- A.
Cisco
- B.
Letmein
- C.
Please
- D.
Access
Correct Answer
D. AccessExplanation
The password that will be required to establish a Telnet session with the router is "access". This can be inferred from the given list of passwords where "access" is the last password mentioned.Rate this question:
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Feb 06, 2024Quiz Edited by
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Nov 16, 2014Quiz Created by
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