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2021 Oct real radio 100-101 fm:

Q51. Refer to the exhibit. 

If CDP is enabled on all devices and interfaces, which devices will appear in the output of a show cdp neighbors command issued from R2? 

A. R2 and R3 

B. R1 and R3 

C. R3 and S2 

D. R1, S1, S2, and R3 

E. R1, S1, S2, R3, and S3 

Answer:


Q52. A network administrator is trying to add a new router into an established OSPF network. The networks attached to the new router do not appear in the routing tables of the other OSPF routers. Given the information in the partial configuration shown below, what configuration error is causing this problem? 

Router(config)# router ospf 1 

Router(config-router)# network 10.0.0.0 255.0.0.0 area 0 

A. The process id is configured improperly. 

B. The OSPF area is configured improperly. 

C. The network wildcard mask is configured improperly. 

D. The network number is configured improperly. 

E. The AS is configured improperly. 

F. The network subnet mask is configured improperly. 

Answer:


Q53. Which commands are required to properly configure a router to run OSPF and to add network 192.168.16.0/24 to OSPF area 0? (Choose two.) 

A. Router(config)# router ospf 0 

B. Router(config)# router ospf 1 

C. Router(config)# router ospf area 0 

D. Router(config-router)# network 192.168.16.0 0.0.0.255 0 

E. Router(config-router)# network 192.168.16.0 0.0.0.255 area 0 

F. Router(config-router)# network 192.168.16.0 255.255.255.0 area 0 

Answer: BE 


Q54. What does a host on an Ethernet network do when it is creating a frame and it does not have the destination address? 

A. Drops the frame 

B. Sends out a Layer 3 broadcast message 

C. Sends a message to the router requesting the address 

D. Sends out an ARP request with the destination IP address 

Answer:


Q55. A network administrator is connecting PC hosts A and B directly through their Ethernet interfaces as shown in the graphic. Ping attempts between the hosts are unsuccessful. What can be done to provide connectivity between the hosts? (Choose two.) 

A. A crossover cable should be used in place of the straight-through cable. 

B. A rollover cable should be used in place of the straight-through cable. 

C. The subnet masks should be set to 255.255.255.192 

D. A default gateway needs to be set on each host. 

E. The hosts must be reconfigured to use private IP addresses for direct connections of this type. 

F. The subnet masks should be set to 255.255.255.0 

Answer: AF 


Up to date ccna 100-101 study guide:

Q56. Why do large OSPF networks use a hierarchical design? (Choose three.) 

A. to decrease latency by increasing bandwidth 

B. to reduce routing overhead 

C. to speed up convergence 

D. to confine network instability to single areas of the network 

E. to reduce the complexity of router configuration 

F. to lower costs by replacing routers with distribution layer switches 

Answer: BCD 


Q57. Refer to the exhibit. 

An administrator cannot connect from R1 to R2. To troubleshoot this problem, the administrator has entered the command shown in the exhibit. Based on the output shown, what could be the problem? 

A. The serial interface is configured for half duplex. 

B. The serial interface does not have a cable attached. 

C. The serial interface has the wrong type of cable attached. 

D. The serial interface is configured for the wrong frame size. 

E. The serial interface has a full buffer. 

Answer:


Q58. What information can be used by a router running a link-state protocol to build and maintain its topological database? (Choose two.) 

A. hello packets 

B. SAP messages sent by other routers 

C. LSAs from other routers 

D. beacons received on point-to-point links 

E. routing tables received from other link-state routers 

F. TTL packets from designated routers 

Answer: AC 


Q59. Refer to the exhibit. 

The two routers have had their startup configurations cleared and have been restarted. At a minimum, what must the administrator do to enable CDP to exchange information between 

R1 and R2? 

A. Configure the router with the cdp enable command. 

B. Enter no shutdown commands on the R1 and R2 fa0/1 interfaces. 

C. Configure IP addressing and no shutdown commands on both the R1 and R2 fa0/1 interfaces. 

D. Configure IP addressing and no shutdown commands on either of the R1 or R2 fa0/1 interfaces. 

Answer:


Q60. Which IP addresses are valid for hosts belonging to the 10.1.160.0/20 subnet? (Choose three.) 

A. 10.1.168.0 

B. 10.1.176.1 

C. 10.1.174.255 

D. 10.1.160.255 

E. 10.1.160.0 

F. 10.1.175.255 

Answer: ACD