單項選擇題Which of the following protocols uses both TCP and UDP ports?（）

A. SMTP
B. Telnet
C. FTP
D. DNS


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1.單項選擇題Which command enhances the 802.1D convergence time on ports that are connected to hosts?（）

A. spanning-tree backbonefast
B. spanning-tree uplinkfast
C. spanning-tree portfast
D. spanning-tree cost512

3.單項選擇題Which command helps a network administrator to manage memory by displaying flash memory and NVRAM utilization?（）

A. show secure
B. show file systems
C. show flash
D. show version

4.單項選擇題What is the most likely reason for the dispartly between the actual network numbers at the branches and the routes in the routing table on Gateway-Router?（）

A. Branch-Router2 is configured to send both RIPv1 and RIPv2 updates.
B. Gateway-Router is configured to only receive RIPv2 updates.
C. Gateway-router is configured to receive only RIPv1 updates.
D. Branch-Router1 is configured to only send RIPv1 updates

5.單項選擇題which address range efficiently summarizes the routing table of the addresses for router main?（）

A. 172.16.0.0/18
B. 172.16.0.0/16
C. 172.16.0.0/20
D. 172.16.0.0/21

最新試題

Which command displays the CHAP authentication process as it occurs between two routers?（）

題型：單項選擇題

Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?（）

題型：單項選擇題

Which IPsec security protocol should be used when confidentiality is required?（）

題型：單項選擇題

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

Which address is the IPV6 all-RIP-routers muticast group address that is used by RIPng as the destaion address?（）

題型：單項選擇題

Which cisco ios command can help to determine the timing of various debug events,relative to each other,when you are debugging a complicated router issue?（）

題型：單項選擇題

Which statement describes the rule of split horizon?（）

題型：單項選擇題

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?（）

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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?（）

題型：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 1Router(config-router)#network 10.0.0.0 255.0.0.0 area 0

題型：單項選擇題