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A network administrator has been receiving work orders about

题目
单选题
A network administrator has been receiving work orders about poor voice quality crossing a branch T1. The cause is determined to be users running high bandwidth file sharing applications across the T1 sending large packets delaying the smaller voice streams. Which of the following would improve voice quality?（）
A

Configure traffic shaping to reduce the bandwidth available to the file sharing application.

B

Configure a separate VLAN for the IP phones.

C

Install a content caching proxy at the branch to reduce inbound WAN traffic.

D

Upgrade switches to provide higher bandwidth ports for workstations and IP phones.

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相似问题和答案

第1题：

The network administrator has just finished installing a new 10/100/1000 switch, but receives reports from the server administrator that servers connected to the new switch seem to be experiencing slow LAN connections. The network administrator checks the port connecting the new switch to the core switch and sees the following information:Which of the following is the MOST likely cause of the slow connections?（）

A. The servers have not had VLAN tagging enabled on their NICs.

B. Speed and duplex have not been set.

C. VLAN tagging was not set on the trunk.

D. The servers have been connected with CAT5 cable.


参考答案：B

第2题：

You are the network administrator at TestKing. TestKing has been assigned the class C IP address 189.66.1.0 by its Internet Service Provider. If you divide the network range by using the 255.255.255.224 subnet mask, how many hosts can be supported on each network?（）

A.14

B.16

C.30

D.32

E.62

F.64


参考答案：C

第3题：

Mr. White has been --------（缺席的）from work for days, so he knows nothing about our new plan.


正确答案：
absent/away

第4题：

A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（）

  • A、For the two vlans to communicate，a network statement for the trunk interface needs to be added to the  OSPF configuration.
  • B、For the two vlans to communicate， a network statement for each subinterface needs to be  added  to the OSPF configuration.
  • C、Direct inter-vlan communication does not require OSPF
  • D、OSPF cannot be used if router-on-a-stick is configured on the router

正确答案:C

第5题：

The communications revolution has influenced both work and leisure and how we think and feel both about place and time,but there have been（ ）views about its economic,political,social and cultural implications.

A.competitive
B.controversial
C.distracting
D.irrational

答案：B
解析：
前半句说道“通信革命不仅影响了我们的工作和休闲，还影响了我们的时空观念”，下半句又说，“但是，人们对其在经济、政治、社会和文化上的影响依然持……观点”。联系上下文，可以清楚知道人们在此问题上仁者见仁，智者见智，意见不一。因此，只有controversial符合题意要求。

第6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7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8题：

Mr. White has been_____（缺席的）from work for days, so he knows nothing about our new plan.


正确答案：
absent/away

第9题：

According to the manager of ABB Corp., this new service _______ very positively by customers who get the service details and cost information quicker.

A.has received
B.has been received
C.have received
D. has been receiving

答案：B
解析：

第10题：

An administrator has added an additional network adapter to each cluster node. The adapters  have been configured and tested， and the /etc/hosts file has been updated. However，the adapters do not appear in the pick list when the administrator tries to define the adapters to HACMP.  What would be required to correct this problem？（）  

  • A、 Rerun autodiscovery.
  • B、 Synchronize the cluster.
  • C、 Restart cluster services.
  • D、 Delete and recreate the adapters.

正确答案:A

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