A router receives information about network 192.168.10.0/24 from multiple sources.What will the router consider the most reliable information about the path to that network?（）

单项选择题An employee of ABC company has move to an office on a different floor. Although the administrator is able to telnet to all of the routers,the address of Switch F is needed in order to verify that the employee remains in the same VLAN.Which action could be used by the administrator to find the IP address of Switch F?（）

A. Issue the show ip route command on Router A
B. Issue the show ip route command on Router B
C. Issue the show cdp neighbors command on Router B
D. Issue the show cdp neighbors detail command on Router C
E. Issue the show arp command on Router A
F. Issue the show arp command on Router B

单项选择题After the show ip route command has been entered,the follwing routes are displayed.Which route will not be entered into the routing table of a neighboring router?（）

A. R 192.168.8.0/24 [120/1] via 192.168.2.2, 00:00:10, Serial0
B. R 192.168.11.0/24 [120/7] via 192.168.9.1, 00:00:03, Serial1
C. C 192.168.1.0/24 is directly connected, Ethernet 0
D. R 192.168.5.0/24 [120/15] via 192.168.2.2,00:00:10,Serial0

单项选择题What is the subnetwork address for a host with the IP address 201.100.5.68 28?（）

A. 201.100.5.0
B. 201.100.5.32
C. 201.100.5.64
D. 201.100.5.65
E. 201.100.5.31
F. 201.100.5.1

单项选择题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.

单项选择题While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?（）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