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单选题Communication with a remote host has failed.  Which command is LEAST helpful in isolating the failure?（）Aping RemoteHostName Bping RemoteHostIPaddr Cnslookup RemoteHostName Dping lo0

题目
单选题
Communication with a remote host has failed.  Which command is LEAST helpful in isolating the failure?（）
A

 ping RemoteHostName 

B

 ping RemoteHostIPaddr 

C

 nslookup RemoteHostName 

D

 ping lo0

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相似问题和答案

第1题：

A network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test?()

A.ARP

B.CDP

C.DHCP

D.DNS

E.ICMP


参考答案：A, E

第2题：

The access control list shown in the graphic has been applied to the Ethernet interface of router R1using the ip access-group 101 in command.Which of the following Telnet sessions will be blocked by this ACL？（）

A.from host PC1 to host 5.1.1.10

B.from host PC1 to host 5.1.3.10

C.from host PC2 to host 5.1.2.10

D.from host PC2 to host 5.1.3.8


参考答案：B, D

第3题：

The remote host parameter configured on the LNS must match which parameter on the LAC?()

A.hostname

B.host

C.client-name

D.remote-host


参考答案：C

第4题：

Communication with a remote host has failed.  Which command is LEAST helpful in isolating the failure?（）

  • A、 ping RemoteHostName 
  • B、 ping RemoteHostIPaddr 
  • C、 nslookup RemoteHostName 
  • D、 ping lo0

正确答案:D

第5题：

On router R1， which three of the following protocols will be forwarded to a host specified by the "iphelper-address" interface configuration command if the configuration has not been modified by the"ip forward-protocol udp" global configuration command？（）

  • A、BOOTP
  • B、TFTP
  • C、ARP
  • D、DNS
  • E、proxy-ARP
  • F、FTP
  • G、CDP

正确答案:A,B,D

第6题：

Refer to the exhibt.Host A has tested connectivity to a remote network.What is the default gateway for host A?()

A.172.16.182.1

B.192.168.1.1

C.10.16.176.1

D.192.168.1.6


参考答案：A

第7题：

Refer to the exhibt.Host A has tested connectivity to a remote network.What is the default gateway for host A?（）

  • A、172.16.182.1
  • B、192.168.1.1
  • C、10.16.176.1
  • D、192.168.1.6

正确答案:A

第8题：

The Ezonexam network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test? (Choose two)

A．ARP

B．CDP

C．DHCP

D．DNS

E．ICMP


正确答案：AE
解析：Explanation:ARPfindsthehardwareaddressofahostfromaknownIPaddress.Here'showitworks:whenIPhasadatagramtosend,itmustinform.aNetworkAccessprotocol,suchasEthernetorTokenRing,ofthedestination'shardwareaddressonthelocalnetwork.(Ithasalreadybeeninformedbyupper-layerprotocolsofthedestination'sIPaddress.)IfIPdoesn'tfindthedestinationhost'shardwareaddressintheARPcache,itusesARPtofindthisinformation.ICMPworksattheNetworklayerandisusedbyIPformanydifferentservices.ICMPisamanagementprotocolandmessagingserviceproviderforIP.ItsmessagesarecarriedasIPdatagrams.RFC1256isanannextoICMP,whichaffordshosts'extendedcapabilityindiscoveringroutestogateways.Periodically,routeradvertisementsareannouncedoverthenetwork,reportingIPaddressesfortherouter'snetworkinterfaces.Hostslistenforthesenetworkinfomercialstoacquirerouteinformation.Aroutersolicitationisarequestforimmediateadvertisementsandmaybesentbyahostwhenitstartsup.

第9题：

Which three of the following protocols will be forwarded to a host specified by the ip helper - address interface configuration command if the configuration has not been modified by the ip forward - protocol udp global con figuration command?（）

  • A、BOOTP
  • B、TFTP
  • C、ARP
  • D、DNS
  • E、proxy - ARP
  • F、FTP

正确答案:A,B,D

第10题：

A network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test? （）

  • A、ARP
  • B、CDP
  • C、DHCP
  • D、DNS
  • E、ICMP

正确答案:A,E

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