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试卷名称:思科认证640-802模拟试卷16

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What information does a router running a link-state protocol use to build and maintain its topological database?

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

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Refer to the exhibit． [*] C-router is to be used as a “router-on-a-stick“ to route between the VLANs． All the interfaces have been properly configured and IP routing is operational． The hosts in the VLANs have been configured with the appropriate default gateway． What is true about this configuration? These commands need to be added to the configuration: C-router(config)# router eigrp 123 C-router(config-router)# network 172．19．0．0 These commands need to be added to the configuration: C-router(config)# router ospf 1 C-router(config-router)# network 172．19．0．0 0．0．3．255 area 0 These commands need to be added to the configuration: C-router(config)# router rip C-router(config-router)# network 172．19．0．0 Explanation/Reference:

Which command can be a router to verify the layer 3 path to a host? traceroute address tracert address ssh address telnet address

Which command reveals the last method used to powercycle a router? show reload show boot show running-config show version

Which command displays CPU utilization? show protocols show process show system show version

On corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs． What is needed to allow communication between the VLANs? a router with subinterfaces configured on the physical interface that is connected to the switch a router with an IP address on the physical interface connected to the switch a switch with an access link that is configured between the switches a switch with a trunk link that is configured between the switches

Refer to the exhibit． What is the meaning of the output MTU 1500 bytes? [*] The maximum number of bytes that can traverse this interface per second is 1500． The minimum segment size that can traverse this interface is 1500 bytes． The minimum segment size that can traverse this interface is 1500 bytes． The minimum packet size that can traverse this interface is 1500 bytes． The maximum packet size that can traverse this interface is 1500 bytes．

Which parameter can be tuned to affect the selection of a static route as a backup．when a dynamic protocol is also being used? link bandwidth hop count link cost administrative distance link delay

Refer to the exhibit． A network administrator configures a new router and enters the copy startup-config running-config on the router． The network administrator powers down the router and sets it up at a remote location． When the router starts, it enter the system configuration dialog as shown． What is the caust of the problem? [*] The network administrator faled to save the configuration． The configuration register is set to 0x2100． The boot system flash command is missing from the configuration． The configuraiton register is set to 0x2102． The router is configured with the boot system startup command．

What two things will a router do when running a distance vector routing protocol? Send periodic updates regardless of topology changes． Send entire routing table to all routers in the routing domain． Use the shortest-path algorithm to the determine best path． Update the routing table based on updates from their neighbors． Maintain the topology of the entire network in its database．

If IP routing is enabled, which two commands set the gateway of last resort to the default gateway? ip default-gateway 0．0．0．0 ip route 172．16．2．1 0．0．0．0 0．0．0．0 ip default-network 0．0．0．0 ip default-route 0．0．0．0 0．0．0．0 172．16．2．1 ip route 0．0．0．0 0．0．0．0 172．16．2．1

Refer to the graphic． A static route to the 10．5．6．0/24 network is to be configured on the HFD router． Which commands will accomplish this? [*] HFD(config)# ip route 10．5．6．0 0．0．0．255 fa0/0 HFD(config)# ip route 10．5．6．0 0．0．0．255 10．5．4．6 HFD(config)# ip route 10．5．6．0 255．255．255．0 fa0/0 HFD(config)# ip route 10．5．6．0 255．255．255．0 10．5．4．6 HFD(config)# ip route 10．5．4．6 0．0．0．255 10．5．6．0

Which statements describe the routing protocol OSPF? It supports VLSM． It is used to route between autonomous systems． It confines network instability to one area of the network． It increases routing overhead on the network． It allows extensive control of routing updates．

What is the default administrative distance of OSPF? 120 100 90 110

Refer to the exhibit． Which WAN protocol is being used? [*] ATM HDLC Frame Relay PPP

Refer to the exhibit: [*] The technician wants to upload a new IOS in the router while keeping the existing IOS． What is the maximum size of an IOS file that could be loaded if the original IOS is also kept in flash? 3 MB 4 MB 5 MB 7 MB 8 MB

Which command is used to display the collection of OSPF link states? show ip ospf lsa database show ip ospf link-state show ip ospf neighbors show ip ospf database

A cisco router is booting and has just completed the POST process．It is now ready to find and load an IOSimage．what function does the router perform next? It checks the configuration register It attempts to boot from a TFTP server It loads the first image file in flash memory It inspects the configuration file in NVRAM for boot instructions

Which IPv6 address is valid? 2031:0:130F::9C0:876A:130B 2001:0DB8:0000:130F:0000:0000:08GC:140B 2001:0DB8:0:130H::87C:140B 2031::130F::9C0:876A:130B

Refer to the exhibit． The two exhibit devices are the only Cisco devices on the network． The serial network between the two devices has a mask of 255．255．255．252． Given the output that is shown, what three statements are true of these devices? [*] The Manchester serial address is 10．1．1．1 The Manchester serial address is 10．1．1．2 The London router is a Cisco 2610． The Manchester router is a Cisco 2610． The CDP information was received on port Serial0/0 of the Manchester router．

Refer to the exhibit． A network associate has configured OSPF with the command: City(config-router)# network 192．168．12．64 0．0．0．63 area 0 After completing the configuration, the associate discovers that not all the interfaces are participating in OSPF． Which three of the interfaces shown in the exhibit will participate in OSPF according to this configuration statement? [*] FastEthernet0 /0 FastEthernet0 /1 Serial0/0 Serial0/1．102 Serial0/1．103

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