單項(xiàng)選擇題An administrator attempts a traceroute but receives a "Destination Unreadable" message. Which protocol is responsible for that message?（）

A. RARP
B. RUDP
C. ICMP
D. SNMP


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1.單項(xiàng)選擇題When a host transmits data across a network to another host, which process does the data go through?（）

A. standardization
B. conversion
C. encapsulation
D. synchronization

2.單項(xiàng)選擇題A network admin wants to know every hop the packets take when he accesses cisco.com. Which command is the most appropriate to use?（）

A. path cisco.com
B. debug cisco.com
C. trace cisco.com
D. traceroute cisco.com

3.單項(xiàng)選擇題Which line from the output of the show ip interface command indicates a layer 1 problem?（）

A. Serial0/1 is up, line protocol is down
B. Serial0/1 is down, line protocol is down
C. Serial0/1 is up, line protocol is up
D. Serial0/1 is administratively down, line protocol is down

4.單項(xiàng)選擇題Which statement about IPv6 is true?（）

A. Addresses are not hierarchical and are assigned at random.
B. Only one IPv6 address can exist on a given interface.
C. There are 2.7 billion addresses available.
D. Broadcasts have been eliminated and replaced with multicasts.

5.單項(xiàng)選擇題Which statement about RIPng is true?（）

A. RIPng allows for routes with up to 30 hops.
B. RIPng is enabled on each interface separately.
C. RIPng uses broadcasts to exchange routes.
D. There can be only one RIPng process per router.

最新試題

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?（）

題型：?jiǎn)雾?xiàng)選擇題

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

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At which layer of the OSI model is RSTP used to prevent loops?（）

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Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?（）

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While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?（）

題型：?jiǎn)雾?xiàng)選擇題

Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?（）

題型：?jiǎn)雾?xiàng)選擇題

What is the default administrative distance of OSPF?（）

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At which layer of the OSI model dose PPP perform?（）

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Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?（）

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Which command is used to display the collection of OSPF link states?（）

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