單項選擇題Which statement describes the rule of split horizon?()

A. Only router can split boundaries(horizons)between concentric networks.
B. All distance vector protocols require fall routes that may cause momentary loops as the topology changes.
C. Networks can only remain fully converged if all information about routes is sent out all active interfaces.
D. Information about a route should not be sent back in the direction from which the original update came.
E. Each AS must keep routing tables converged to prevent dead routes from being advertised across the AS boundary.


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1.單項選擇題While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?()

A. Router#copy tftp flash
B. Router(config)#restore flash
C. Router(config)#repair flash
D. Router#copy flash run
E. Router>copy start flash
F. Router#copy start flash

3.單項選擇題An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?()

A. IP address:192.168.20.14 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.9
B. IP address:192.168.20.254 Subnet Mask:255.255.255.0 Default Gateway:192.168.20.1
C. IP address:192.168.20.30 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.25
D. IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.17
E. IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.25

5.單項選擇題

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 configuerd improperly

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Which statement describes the rule of split horizon?()

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What is the default administrative distance of OSPF?()

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Which pairing reflects a correct protocol-and-metric relationship?()

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While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?()

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If all OSPF routers in a single area are configured with the same priority value,what value dose a router use for the ODPF router ID in the absence of a loopback interface?()

題型:單項選擇題