网络学院Q1a.docx

1、网络学院Q1a1窗体顶端Which of the following are required when adding a network to the OSPF routing process configuration? (Choose three.) network address loopback address autonomous system number subnet mask wildcard mask area ID 窗体底端ObservableDescriptionMax Value1correctness of responseOption 1, Option 5, a

2、nd Option 6 are correct.1 point for each correct option.0 points if more options are selected than required. 3This item references content from the following areas: CCNA Exploration: Routing Protocols and Concepts 11.2.3 The network Command 2窗体顶端Which of the following are primary functions of a rout

3、er? (Choose two.) packet switching microsegmentation domain name resolution path selection flow control 窗体底端ObservableDescriptionMax Value1correctness of responseOption 1 and Option 4 are correct.1 point for each correct option.0 points if more options are selected than required. 2This item referenc

4、es content from the following areas: CCNA Exploration: Routing Protocols and Concepts 1.1.1 Routers are Computers 3窗体顶端Refer to the routing table shown in the exhibit. What is the meaning of the highlighted value 192? It is the value assigned by the Dijkstra algorithm that designates the number of h

5、ops in the network. It is the value used by the DUAL algorithm to determine the bandwidth for the link. It is the metric, which is cost. It is the administrative distance. 窗体底端ObservableDescriptionMax Value1correctness of response2 points for Option 30 points for any other option 2This item referenc

6、es content from the following areas: CCNA Exploration: Routing Protocols and Concepts 3.5.1 Identifying Elements of the Routing Table 4窗体顶端Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through a router? (Choose three.) The router modifies

7、the TTL field, decrementing it by one. The router changes the source IP to the IP of the exit interface. The router maintains the same source and destination IP. The router changes the source physical address to the physical address of the exit interface. The router changes the destination IP to the

8、 IP of the exit interface. The router sends the packet out all other interfaces, besides the one it entered the router on. 窗体底端ObservableDescriptionMax Value1correctness of responseOption 1, Option 3, and Option 4 are correct.1 point for each correct option.0 points if more options are selected than

9、 required. 3This item references content from the following areas: CCNA Exploration: Routing Protocols and Concepts 1.4.5 Switching Function 5窗体顶端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? ADC ABC It will load balance the traf

10、fic between ADC and ABC It will send the traffic via ABC, and will use ADC as a backup path only when ABC fails. 窗体底端ObservableDescriptionMax Value1correctness of response2 points for Option 30 points for any other option 2This item references content from the following areas: CCNA Exploration: Rout

11、ing Protocols and Concepts 3.3.3 Load Balancing 6窗体顶端What is the purpose of the TTL field within an IP packet header? clears an unreachable route from the routing table after the invalid timer expires prevents regular update messages from inappropriately reinstating a route that may have gone bad re

12、moves an unreachable route from the routing table after the flush timer expires limits the period of time or number of hops a packet can traverse through the network before it should be discarded used to mark the route as unreachable in a routing update that is sent to other routers 窗体底端ObservableDe

13、scriptionMax Value1correctness of response2 points for Option 40 points for any other option 2This item references content from the following areas: CCNA Exploration: Routing Protocols and Concepts 4.4.7 IP and TTL 7窗体顶端Refer to the exhibit. How many routes are both level 1 and qualify for use as an

14、 ultimate route? 1 2 3 4 5 6 窗体底端ObservableDescriptionMax Value1correctness of response2 points for Option 20 points for any other option 2This item references content from the following areas: CCNA Exploration: Routing Protocols and Concepts 8.1.3 Level 1 Routes 8窗体顶端Refer to the exhibit. Cost for

15、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? C-B-E-D C-B-A-D C-F-E-D C-F-B-A-D C-F-E-A-D 窗体底端ObservableDescriptionMax Value1correctness of response2 points for Option 30 points for any other op

16、tion 2This item references content from the following areas: CCNA Exploration: Routing Protocols and Concepts 10.1.2 Introduction to the SPF Algorithm 9窗体顶端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 a

17、dministrator will correct the problem? Set the encapsulation on both routers to PPP. Decrease the bandwidth on Serial 0/1/0 on router 2 to 1544. Change the cable that connects the routers to a crossover cable. Change the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30. 窗体底端ObservableDescrip

18、tionMax Value1correctness of response2 points for Option 40 points for any other option 2This item references content from the following areas: CCNA Exploration: Routing Protocols and Concepts 1.2.2 Basic Router Configuration 10窗体顶端Refer to the exhibit. A network administrator is trying to determine

19、 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 admin

20、istrator should take to troubleshoot the problem? Reboot the routers. Change the OSPF process ID on all of the routers to 0. Check to see if the cable is loose between ORL and JAX. Check to see if CDP packets are passing between the routers. Use show and debug commands to determine if hellos are pro

21、pagating. 窗体底端ObservableDescriptionMax Value1correctness of response2 points for Option 50 points for any other option 2This item references content from the following areas: CCNA Exploration: Routing Protocols and Concepts 10.1.6 Building the Link-State Packet 11窗体顶端Refer to the exhibit. Which summ

22、arization should R1 use to advertise its networks to R2? 192.168.1.0/24 192.168.0.0/24 192.168.0.0/22 192.168.1.0/22 窗体底端ObservableDescriptionMax Value1correctness of response2 points for Option 30 points for any other option 2This item references content from the following areas: CCNA Exploration:

23、Routing Protocols and Concepts 6.3.1 Route Summarization 12窗体顶端A router boots and enters setup mode. What is the reason for this? The IOS image is corrupt. Cisco IOS is missing from flash memory. The configuration file is missing from NVRAM. The POST process has detected hardware failure. 窗体底端Observ

24、ableDescriptionMax Value1correctness of response2 points for Option 30 points for any other option 2This item references content from the following areas: CCNA Exploration: Routing Protocols and Concepts 1.1.4 Router Boot-up Process 13窗体顶端Refer to the exhibit. R1 is configured properly for a single

25、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? 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 are

26、a 0 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 R2(config-router)# network 10.1.1.0 0.0.0.3 area 1 R2(c

27、onfig)# 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 窗体底端ObservableDescriptionMax Value1correctness of response2 points for Option 10 points for any other option 2This item references content from the following areas: CCNA E

28、xploration: Routing Protocols and Concepts 11.2.3 The network Command 14窗体顶端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 th

29、ey cannot form an EIGRP neighbor adjacency. What action should be taken to solve this problem? Enable the serial interfaces of both routers. Configure EIGRP to send periodic updates. Configure the same hello interval between the routers. Configure both routers with the same EIGRP process ID. 窗体底端ObservableDescriptionMax Value1correctness of response2 points for Option 40 points for any o