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- 目录
篇1：CISCOCCNA认证考试640-810题库原题2
three bicycle stores in the testking pro chain have decided to establish network connectivity to maintain their repair business in a centralized manner. the stores contracted a local technician, non-cisco certified, to configure the routers. however, the local mcp certified technician was not able to finish the configuration in an appropriate manner. no network connectivity has been established among the routers. the routers are named testking1, testking2, and testking3.
testking pro has contracted you to fix the problems. identify the fault(s) and make the necessary change(s) to establish connectivity. the routers have been configured with the following specifications:
?the routers are named testking1, testking2, and testking3.
?rip is the routing protocol
?clocking is provided on the serial 0 interfaces
?the password on each router is “testking”
?the subnet mask on all interfaces is the default mask.
?the ip addresses are listed in chart below.
testking1
e0 192.168.27.1
e1 192.168.29.1
s0 192.168.31.1
secret password: testking
testking2
e0 192.168.35.1
s0 192.168.33.1
s1 192.168.31.2
secret password: testking
testking3
e0 192.168.37.1
s1 192.168.33.2
secret password: testking
to configure the router click on the host icon that is connected to the router by a serial cable.
answer:
click on host 2:
router testking1:
testking1>enable
password: testking
testking1 # config terminal
testking1 (config) # interface ethernet 0
testking1 (config-if) # ip address 192.168.27.1 255.255.255.0
testking1 (config-if) # no shutdown
testking1 (config-if) # exit
testking1 (config) # interface ethernet 1
testking1 (config-if) # ip address 192.168.29.1 255.255.255.0
testking1 (config-if) # no shutdown
testking1 (config-if) # exit
testking1 (config) # interface serial 0
testking1 (config-if) # ip address 192.168.31.1 255.255.255.0
testking3 (config-if) # clock rate 64000
testking1 (config-if) # no shutdown
testking1 (config-if) # exit
testking1 (config) # router rip
testking1 (config-router) # network 192.168.27.0
testking1 (config-router) # network 192.168.29.0
testking1 (config-router) # network 192.168-31.0
testking1 (config-router) # ctrl-z
testking1 # copy running-config startup-config
click on host 4
篇2：CISCOCCNA认证考试640-810题库原题9
your boss at testking asks you about half-duplex and full-duplex ethernet. what are unique for halfduplex ethernet? (choose two)
a. half-duplex ethernet operates in a shared collision domain.
b. half-duplex ethernet operates in a private collision domain.
c. half-duplex ethernet has higher effective throughput.
d. half-duplex ethernet has lower effective throughput.
e. half-duplex ethernet operates in a private broadcast domain.
answer: a d
explanation:
a single device could not be sending a frame and receiving a frame at the same time because it would mean that a collision was occurring. so, devices simply chose not to send a frame while receiving a frame. that logic is called half-duplex logic.
ethernet switches allow multiple frames to be sent over different ports at the same time. additionally, if only one device is connected to a switch port, there is never a possibility that a collision could occur. so, lan switches with only one device cabled to each port of the switch allow the use of full-duplex operation. full
duplex means that an ethernet card can send and receive concurrently.
篇3：CISCOCCNA认证考试640-810题库原题7
based on the display of the command output, what does [120/3] represent?
a. 120 is the udp port for forwarding traffic and 3 is the number of hops.
b. 120 is the administrative distance and 3 is the metric for that route.
c. 120 is the bandwidth of the link and 3 is the routing process number.
d. 120 is the value of the update timer and 3 is the number of updates received for that route.
answer: b
explanation:
to decide which route to use, ios uses a concept called administrative distance. administrative distance is a number that denotes how believable an entire routing protocol is on a single router. the lower the number, the better, or more believable the routing protocol.
route type administrative distance
connected 0
igrp 100
rip 120
篇4：CISCOCCNA认证考试640-810题库原题5
two routers named testking1 and testking2 are connected via their serial interfaces as illustrated, but they are unable to communicate. the testking1 router is known to have the correct configuration. given the partial configurations, identify the fault on the testking2 router that is causing the lack of
connectivity.
a. incomplete ip address
b. insufficient bandwidth
c. incorrect subnet mask
d. incompatible encapsulation
e. link reliability too low
f. ipcp closed
answer: d
explanation:
hdlc and ppp configuration
hdlc and ppp configuration is straightforward. you just need to be sure to configure the same wan data-link protocol on each end of the serial link. otherwise, the routers will misinterpret the incoming frames, because each wan data-link protocol uses a different frame format. other than configuring some optional features, that’s all you need to do.
篇5：CISCOCCNA认证考试640-810题库原题1
you work as network administrator at testking
your trainee is configuring a router with both physical and logical interfaces.
he asks you what factor determines the ospf router id.
what should you tell him?
a. the lowest network number of any interface.
b. the lowest ip address of any logical interface.
c. the lowest ip address of any physical interface.
d. the highest network number of any interface.
e. the highest ip address of any logical interface.
f. the highest ip address of any physical interface.
answer: f
explanation:
the ospf topology database includes information about routers and the subnets, or links, to which they are attached. to identify the routers in the neighbor table’s topology database, ospf uses a router id (rid) for each router. a router’s ospf rid is that router’s highest ip address on a physical interface when ospf starts running.
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CISCOCCNA认证考试640-810题库原题2（共5篇）
