2022年诺西文档资料开发工程师笔试题.pdfVIP

TestforCandidates

Directions:

1.Pleaseanswerallthequestionsinanotherpaper.(请在此外一张白纸上答题

2.Fillinyournameinthepaper.(在白纸上写上你旳名字

3.Trytofinishtheexamwithin1hour.(尽量在1小时内完毕

PartⅠPleasegivetheEnglishandChinesedescriptionstothefollowing

abbreviations(20p,2point/question.

e.g.BGP:BorderGatewayProtocol,边界网关合同

1.ADSL:

2.SIP:

3.AAA:

4.PPPoE:

5.DSLAM:

6.CDMA:

7.ATM:

8.RADIUS:

9.POTS:

10.P-CSCF:

PartⅡThereisonlyonecorrectanswerforeachquestion,pleasemarktherightone

with“√”(10p,1point/question.

11.Therangeof0Hzto4kHzisreservedforanalogvoicetraffic.ADSLoccupies

frequenciesabovethatrange.WhatistheupperboundaryforcurrentADSL

implementations?

A.3kHz

B.4kHz

C.1.1MHz

D.40kHz

12.WhichlayeroftheOSIreferencemodelisresponsibleforensuringreliableend-

to-enddeliveryofdata?

A.Application

B.Presentation

C.Session

D.Transport

E.Network

F.Data-Link

13.

FourLANswitchesareconnectedtogetherasshowninthefigurebelow:

Studythefigurecarefully.WhatisthepurposeoftheSpanningTreeProtocol(STP

thatisoperatingintheswitchtopology?

A.Toelectaparticularswitchasbackupdesignatedswitch.

B.TopreventframesfromloopingandhaveoneactiveLayer2paththroughthe

switchesnetwork.

C.Toselectthebestpathtoaremotedestinationthatisonadifferentnetwork.

D.TolearntheMACaddressesofhostattachedtotheswitchesnetwork.

E.TodistributeVLANconfigurationinformationthroughouttheswitchednetwork.

14.Whatprotocolisusedtofindthehardwareaddressofalocaldevice?

A.RARP

B.ARP

C.IP

D.ICMP

E.BootP

15.Youwanttoimplementamechanismthatautomat