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EPC中級(jí)考試練習(xí)題及答案2(500題)

EPC中級(jí)考試練習(xí)題及答案2

L[單選題]重啟XGW(PDSN)整框,命令如下OoTorestartthewholeshelfofthexGW

(PDSN),runsthecommand().

A)PDSNttreloadsystemforce

B)PDSNttreboot

C)PDSNttresetsystem

答案:A

解析:

2.[單選題]ZXUN-XGWGGSN配置了NTP時(shí)間同步,其中時(shí)間同步間隔配置為ntppoll-interval

10,則GGSN每隔()同步一次。IfNTPsynchronizationisconfiguredontheZXUN-χGWGGSN,

andthetimesynchronizationinterval“ntppoll-interval,,issetto"10",theGGSN

synchronizesclockonceevery().

A)IOs

B)IOOs

C)1024s

D)IOmin

答案:C

解析:

3.[單選題]資源名為nic-ems、nic-bs、nic-in、nic-out的資源屬于什么類型資源?Resources

withnamesofnic-ems,nic-bs,nic-in,andnic-outbelongtothefollowingresource

type:().

A)IP

B)NIC

OMOUNT

D)APPLICATION

答案:B

解析:

4.[單選題]T8000四塊交換網(wǎng)絡(luò)卡實(shí)現(xiàn)3+1負(fù)荷分擔(dān),交換容量達(dá)到Oo

A)1.90Tbps

B)1.91Tbps

C)1.92Tbps

D)1.93Tbps

答案:C

解析:

5.[單選題]以下過程中用來建立GGSN與SGSN之間邏輯鏈路的為:()

A)CellSelection

B)Attach

C)PDPContextActivation

D)RΛupdate

答案:C

解析:

6.[單選題]PDSNV3.8版本的IiCenSe界面,可以通過在區(qū)號(hào)和局號(hào)配置界面,光標(biāo)點(diǎn)在可配置項(xiàng)

,按住那幾個(gè)按鍵進(jìn)入IiCenSe界面()。

A)Ctrl+Alt+Shift

B)Ctrl+Alt+Shift+Home

C)Ctrl+Alt+O

D)Ctrl+Alt+Insert

答案:B

解析:

7.[單選題]用戶上網(wǎng)下載音樂,URL為http:〃download,example,com/music/foobar.mp3。xGW

GGSN啟用了內(nèi)容計(jì)費(fèi),并在相應(yīng)一級(jí)過濾規(guī)則下按順序配置了下列二級(jí)過濾規(guī)則,則該用戶下載音

樂的流量會(huì)匹配到哪條規(guī)則?TheURLfordownloadingmusicis

"http://download,example,com/music/foobar.mp3".Ifcontentschargingisenabledonthe

xGWGGSN,andL2filteringrulesareconfiguredunderthecorrespondingLlfiltering

ruleinsequence,thetrafficofdownloadingmusicbythisuserwillmatchthe

followingrule:().

A)http://download,example,com/music/foobar.mp3prioritylO

B)http://*,example,com*priority20

C)http://download,example,com*priority20

D)http://download,example,com∕music∕*priority20

答案:C

解析:

8.[單選題]某純VEPC商用局點(diǎn),PFU虛機(jī)為4主1備,根據(jù)組網(wǎng)規(guī)范PGW的需要規(guī)劃幾個(gè)GTPU地址

A)4

B)6

08

D)10

答案:C

解析:3

9.[單選題]對(duì)于XGWPDSN,系統(tǒng)初始存在一個(gè)默認(rèn)VRF和mngVRF,mngVRF專用于(),默認(rèn)VRF無

需添加,也無法刪除。ForthexGWPDSN,there'sadefaultVRFandmngVRFinthesystem

initially.ThemngVRFisusedfor()specially.ThedefaultVRFdoesnotneedtobe

added,norcanitbedeleted.

A)管理IPmanagementIP

B)業(yè)務(wù)IPSerViCeIP

ONTPIP

D)AlarmBoxIP

答案:A

解析:

10.[單選題]在XGW(PDSN)的信令中,下面哪條信令表示PDSN主動(dòng)發(fā)起釋放PPP連接?Among

signalingmessagesofthexGW(PDSN),thefollowingsignalingmessageshowsthatthe

PDSNinitiallyreleasesthePPPconnection:().

A)ST_PPP_SIGNAL_PPP_LCP_TER_REQ_RCV

B)ST_PPP_SIGNAL_PPP_LCP_TER_REQ_SEND

C)ST_PPP_SlGNAL_PPP_IPCPJrERREQRCV

D)ST_PPP_SIGNAL_PPP_IPCP_TER_REQ_SEND

答案:B

解析:

IL[單選題]在Ga輸入配置中,目前CG支持單地址和多地址兩種情形,其中前臺(tái)網(wǎng)元使用多個(gè)地址時(shí)

,使用默認(rèn)端口號(hào)()與CG發(fā)送GTP消息。InGaconfiguration,nowtheCGsupportsboth

singleaddressandmultipleaddresses.Whentheforegroundnetworkelementuses

multipleaddresses,thedefaultportnumber()isusedtosendGTPmessagestotheCG.

A)3368

B)3386

C)3387

D)3367

答案:B

解析:

12.[單選題]在SGSNGT翻譯配置中,本局GT號(hào)碼指向的局向是()0InSGSNGTtranslation

configuration,whichofficeshouldthelocalGTnumberbedirectedto?()

A)local

B)HLR

OSTP

D)RNC

答案:A

解析:

13.[單選題]在UMACSGSN中,EGFS提供()個(gè)IoGE口用于框間級(jí)聯(lián)。InuMΛCSGSN,()10GEports

inEGFSareusedforcascadebetweenshelves.

A)l

B)2

C)3

D)4

答案:B

解析:

14.[單選題]V4SGSN要求前臺(tái)單板從上級(jí)()同步時(shí)鐘。Accordingtonetworking

specificationsoftheV4SGSN,foregroundboardsneedtosynchronizeclockfromthe

higher-level().

A)OMP

B)網(wǎng)管OMM

C)EMS

D)NTP服務(wù)器NTPserver

答案:A

解析:

15.[單選題]()是PS域用的手機(jī)臨時(shí)的識(shí)別碼,代替手機(jī)的識(shí)別碼IMSl用于PS域業(yè)務(wù)。()isa

temporarymobilesubscriberidentityinthePSdomain.UsedinPSdomainservices,it

isasubstitutefortheInternationalMobileStationIdentity(IMSI).

A)TMSI

B)P-TMSI

ONSAPI

D)RABID

答案:B

解析:

16.[單選題]在運(yùn)營(yíng)商沒有特別要求的情況下,我們一般將哪個(gè)計(jì)賽通道默認(rèn)設(shè)置為合并話單通道

?Whenthecarrierdoesnothaveanyspecialrequirement,weusuallysetthefollowing

channelasthemergerCDRchannelbydefault:().

A)CHl

B)CH2

OCHO

D)CH3

答案:c

解析:

17.[單選題]GSN本身并不要求長(zhǎng)久性地保存CDR,所以GSN必須將CDR傳送到()保存。

A)CGD

B)CG

OCGF

D)CU

答案:c

解析:

18.[單選題]xGWGGSN中,VirtUaI-gtp地址配置在()上。InxGWGGSN,thevirtual-gtpIP

addressshouldbeconfiguredin().

A)GSUGroup

B)CUGroup

C)SLBGroup

D)xDPIGroup

答案:C

解析:

19.[單選題]xGWGGSN擴(kuò)容GSU時(shí),必須首先進(jìn)行的步驟是()。DuringGSUexpansiononthexGW

GGSN,weneedtoperformthefollowingstepfirst:().

A)拔出備用MPURemovethestandbyMPU

B)插上新增GSUInstallthenewGSU

C)修改GGSN配置數(shù)據(jù)ModifyGGSNconfiguration

D)修改CG配置數(shù)據(jù)ModifyCGconfiguration

答案:A

解析:

20.[單選題]替換現(xiàn)網(wǎng)GGSN時(shí),一般常用的操作方案是()oToswaptheGGSNintheexisting

network,weusuallyapplythefollowingoperationplan:().

A)割接當(dāng)晚直接將現(xiàn)網(wǎng)的SGSN的所有APN的流量指向我們的GGSN.Onthenightofcutover,direct

thetrafficofallAPNsfromthecurrentSGSNtoZTEGGSN.

B)先同局方確定,可以考慮先割接幾個(gè)APN到我們的GGSN下,待觀察一段時(shí)間后,再逐步割接其他的

APN到我們的GGSN下。DiSCUSSwiththecarrierfirst.WecancutoversomeΛPNstoZTE

GGSNfirst,andcutoverotherAPNstoZTEGGSNgraduallyaftermakingobservationfor

sometime.

C)同局方確定,可以考慮先割接少量用戶到我們的GGSN下,該用戶的所有APN都指向我們的GGSN。

Discusswiththecarrier.WecanswapsomesubscriberstoZTEGGSNfirst,anddirect

allAPNsoftheseuserstoZTEGGSN.

D)以上方案都可行。Alltheaboveoperationplans

答案:B

解析:

21.[單選題]考慮到用戶報(bào)文在Gn/Gp口可能經(jīng)過多層隧道封裝,為了避免報(bào)文分片,推薦在XGW

GGSN的APN配置中將MaXSegmentSize(MSS)設(shè)為()。Inconsiderationthatuserpackets

areencapsulatedthroughmulti-layertunnelsontheGn/Gpinterface,toavoidpacket

segments,itisrecommendedtosetMaxSegmentSize(MSS)inAPNconfigurationonthe

xGWGGSNto().

A)1360

B)1400

C)1420

D)1460

答案:A

解析:

22.[單選題]關(guān)于XGW(PDSN)的信令,下列哪個(gè)用于PDSN指示PCF釋放AlO連接?Amongsignaling

messagesofthexGW(PDSN),thefollowingsignalingmessageisusedbythePDSNto

indicatethePCFtoreleaseAlOconnection:().

A)SLRP_SIGNAL-AILRRQ_RCV_PKT

B)ST_RP_SIGNAL_A11_RRP_SEND_PKI

C)ST_RP_SIGNAL_A11_REGUpD_SEND

D)ST_RP_SIGNAL_A11_REGUPDACK_RCV

答案:C

解析:

23.[單選題]uMACSGSN開啟哪項(xiàng)功能時(shí),不需要申請(qǐng)新的LiCenSe?Whenthe()functionis

enabledontheuMACSGSN,Wedonotneedtoapplyforanewlicense.

A)DT

B)UBAS

C)POOL

D)M0CN

答案:C

解析:

24.[單選題]GGSN對(duì)接PCRF的接口()。TheinterfacefortheGGSNtointerconnectwiththe

PCRFis().

A)Gs

B)Go

OGx

D)Gy

答案:C

解析:

25.[單選題]關(guān)于DT功能,下面描述錯(cuò)誤的是()。Whichofthefollowingstatementsiswrong

abouttheDTfunction?()

A)實(shí)現(xiàn)DT功能后,控制面仍由兩條隧道組成AftertheDTfunctionisrealized,thecontrol

planestillconsistsoftwotunnels.

B)實(shí)現(xiàn)DT功能后,用戶面仍由兩條隧道組成AftertheDTfunctionisrealized,theuserplane

stillconsistsoftwotunnels.

C)SGSN為RAN提供GGSNTElD和用戶面地址,為GGSN提供RANTEID和用戶面地址TheSGSN

providesGGSNTEIDanduserplaneIPfortheRAN,andprovidesRANTEIDanduserplane

IPfortheGGSN.

D)DT功能不支持Gb接入方式TheDTfunctiondoesnotsupporttheGbaccessmode.

答案:B

解析:

26.[單選題]關(guān)于XGW(PDSN),如果LCP階段協(xié)商的AeCM為OXoOOOoO00,在HDLCTike封裝的時(shí)候,需

要進(jìn)行轉(zhuǎn)義的字符有()AboutthexGW(PDSN),iftheACCMnegotiatedintheLCPphaseis

0x00000000,thefollowingcharacterneedsbeconvertedinHDLC-IikeFraming:().

A)0x7e

B)0x10

C)0x20

D)以上都不需要Noneofabove

答案:A

解析:

27.[單選題]當(dāng)移動(dòng)性管理處于()狀態(tài)下,MS和SGSN中的MM上下文已建立,可在RA的層次上對(duì)

MS進(jìn)行管理,對(duì)MS進(jìn)行尋呼等。

A)PMM-DETACHED

B)PMM-IDLE

C)PMM-CONNEeTED

D)以上都不是(Nonoftheabove)

答案:B

解析:

28.[單選題]SGSNAPN更正方式錯(cuò)誤的是()。Whichofthefollowingoptionsiswrongabout

theSGSNAPNcorrectionmode?()

A)指定APN更正SPeCifytheΛPNtomakecorrection

B)更正為簽約的第一個(gè)APNMOdifytothefirstsubscribedAPN

C)APN模糊匹配APNfuzzymatching

D)更正為*Modifytobe*

答案:D

解析:

29.[單選題]關(guān)于XGW(PDSN),下列哪個(gè)命令可以查看單板運(yùn)行時(shí)長(zhǎng)?OnthexGW(PDSN),wecan

usethecommand()toviewtheboardrunningduration.

A)showxgwinfo

B)showsoftware

C)showhardware

D)showrunning-info

答案:C

解析:

30.[單選題]商用局的CG磁陣磁盤鏡像方式為OoIncommercialoffices,themirroringmode

ofCGdiskarraymustbe().

A)RAID0+1

B)RAID1+O

C)RΛI(xiàn)D1+1

D)RAID1+X

答案:B

解析:

31.[單選題]在ZXWNCG中,運(yùn)行支撐模塊位于()之上,向上層應(yīng)用提供了一個(gè)基于應(yīng)用進(jìn)程的虛

擬開發(fā)環(huán)境。

A)操作維護(hù)模塊

B)數(shù)據(jù)庫模塊

C)操作系統(tǒng)

D)業(yè)務(wù)處理模塊

答案:C

解析:

32.[單選題]關(guān)于XGW(PDSN),分配靜態(tài)IP時(shí),地址池類型必須被配置為()。OnthexGW(PDSN),

duringassignmentofstaticIPaddresses,theIPaddresspooltypemustbesetto().

A)local

B)aaa

C)static

D)assigned

答案:D

解析:

33.[單選題]為了在FTP下載測(cè)試中獲得最大吞吐率,不考慮多層隧道封裝的情況,可以在XGW

GGSN的APN配置中將MSS設(shè)為()TogetthemaximumthroughoutrateduringFTPdownloading

tests,withoutconsideringmulti-layertunnelencapsulation,wecansettheMaxSegment

Size(MSS)inAPNconfigurationonthexGWGGSNto().

A)1360

B)1400

C)1420

D)1460

答案:C

解析:

34.[單選題]調(diào)試attach業(yè)務(wù)時(shí),信令跟蹤中必需選擇的協(xié)議是。。

A)FRNS

B)LLC

OGMM

D)SM

答案:C

解析:

35.[單選題]關(guān)于XGW(PDSN),以下哪種不可能導(dǎo)致所有GSU單板異常重啟?OnthexGW(PDSN),

whichofthefollowingsituationsdoesn'tcauseallGSUboardstorebootabnormally?(

)

A)所有MPU單板重啟AnMPUboardsarerebooted.

B)所有SFU單板重啟AlISFUboardsarerebooted.

C)所有PFU單板重啟AllPFUboardsarerebooted.

D)所有電源模塊掉電AlIpowermodulesarepoweredoff.

答案:C

解析:

36.[單選題]PS域短消息業(yè)務(wù)功能通過()接口實(shí)現(xiàn)。

A)Gr

B)Gn

OGd

D)Gp

答案:C

解析:

37.[單選題]對(duì)于XGWPDSN,T8000平臺(tái)機(jī)架有上下兩個(gè)框,共22個(gè)槽位,槽位順序?yàn)?)。Forthe

xGWPDSN,therearetwoshelvesintheT8000rack,includingatotalof22slots.The

slotsequenceis().

A)2001216171819345216789101112131415

B)2001234567892110111213141516171819

00123456789IOll12131415161718192021

D)0123410111213141556789161718192021

答案:A

解析:

38.[單選題]3G加密是在RNS與手機(jī)之間進(jìn)行的,加密算法由。來通知RNC。3Gencryption

happensbetweentheRNSandthemobilephone,andtheencryptionalgorithmisnotified

totheRNSby().

A)SGSN

B)GGSN

OHLR

D)手機(jī)mobilephone

答案:A

解析:

39.[單選題]純3G的UMACSGSN如果要支持2G業(yè)務(wù),必須增加O模塊。Ifapure-3GuMΛCSGSN

needstosupport2Gservices,weneedtoaddthe()module.

A)USMP

B)USUPGPRS

C)USUP_3G

D)以上都不是Noneoftheabove

答案:B

解析:

40.[單選題]xGNGGSN上清除告警的命令是。。ToclearalarmsonthexGWGGSN1Werunthe

command().

A)alarm-confirm<flowid>

B)alarm-clear<flowid>

C)alarm-delete<flowid>

D)alarm-acknowledge<flowid>

答案:A

解析:

41.[單選題]GGSN中用于跟OCS對(duì)接的接口是O。InGGSN,()istheinterfacefor

interconnectionwithOCS.

A)Gx

B)Gy

OGi

D)Gn

答案:B

解析:

42.[單選題]如果APN為zte.com,移動(dòng)國(guó)家碼為111,移動(dòng)網(wǎng)號(hào)為13,則在SGSN的APN配置中APN應(yīng)該

寫成()。IfAPNis"zte.com",MCCis111,MNCis13,theAPNis()intheapnhost

configurationofSGSN.

A)zte.com.MNCO13.MCCl11.gprs

B)zte.com.MNClll.MCCO13.gprs

C)zte.com.MCCO13.MNClll.gprs

D)zte.com.MCClll.MNCO13.gprs

答案:A

解析:

43.[單選題]關(guān)于商用局GGSN的組網(wǎng)情況,下面說法不正確的是()。Whichofthefollowing

statementsisincorrectaboutthenetworkingstructureoftheGGSNinacommercial

office?()

A)推薦采用GN,Gl口采用靜態(tài)路由來保證傳輸?shù)目煽啃?。ItisrecommendedthatGNandGi

interfacesusestaticroutestoensuretransmissionreliability.

B)Gn、Ga、Gi(net?wap)路由必須分布在不同PFU單板的實(shí)接口。RoutesofGn,Ga,andGi

(net,wap)interfacesshouldbelocatedonrealinterfacesofdifferentPFUboards.

C)一塊PFU單板拔出后,路由能夠自動(dòng)切換到另一塊PFU單板物理接口。WhenonePFUboardis

removed,itsroutecanautomaticallyswitchovertothephysicalinterfaceofanother

PFUboard.

D)若采用OSPF發(fā)布地址段時(shí),需要確認(rèn)內(nèi)部每段地址都已經(jīng)發(fā)布出去。WhileusingtheOSPFto

distributeaddresssegments,weneedtoconfirmthateachinternalIPsegmenthasbeen

distributedsuccessfully.

答案:A

解析:

44.[單選題]關(guān)于XGW(PDSN),下列哪個(gè)命令可以查看系統(tǒng)上電時(shí)長(zhǎng)?OnthexGW(PDSN),wecan

runthecommand()toviewthedurationofsystempower-on.

A)showxgwinfo

B)showsoftware

C)showhardware

D)showrunning-info

答案:B

解析:

45.[單選題]xGW(PDSN)的GSU組1,包含0/8/0和0/9/0這2個(gè)CPU,當(dāng)前0/9/0主用,0/8/0備用,如下

倒換命令正確的是OOTheGSUgroup1ofxGW(PDSN)includesCPU0/8/0andCPU0/9/0.If

CPU0/9/0ismasterandCPU0/8/0isslavecurrently,thefollowingswitchovercommand

iscorrect:().

A)gsu-switch0/8/0

B)gsu-redundancyswitch0/8/0

C)gsu-switch0/9/0

D)gsu-redundancyswitch0/9/0

答案:D

解析:

46.[單選題]不可達(dá)定時(shí)器應(yīng)該略比MS使用的()計(jì)時(shí)器長(zhǎng)。TheSGSNMobileUnreachableTimer

shouldbeslightlylongerthan()ofMS.

A)Ready定時(shí)器ReadyTimer

B)周期性路由區(qū)更新PeriOdiCalRouteUpdateTimer

C)MM上下文刪除定時(shí)器TiInertodeleteMMContext

D)IU釋放定時(shí)器IUReleaseTimer

答案:B

解析:

47.[單選題]uMACSGSN中,單板擴(kuò)容前必須先在ECMM中增加單板配置信息。USMP.USUP_GPRS、

USUP3G三類模塊所在單板都必須配置為()oOntheuMACSGSN,beforeboardexpansion,

boardconfigurationintheECMMmustbefinished.Theboardsthatareconfiguredas

USMP,USUP_GPRS,USUP_3Gmodulesmustbeconfiguredas().

A)OMP

B)PP

C)INDEPENDBOARD

D)Other

答案:B

解析:

48.[單選題]uMAC網(wǎng)元進(jìn)行單板擴(kuò)容時(shí),如果新增的物理單板面板名稱是PPBBOe,那么需要()及之

后軟件版本才能支持。

A)V4.15.10

B)V4.12.11

C)V4.13.20

D)V4.14.20

答案:A

解析:1

49.[單選題]xGWGGSN一般不需要對(duì)接的設(shè)備是()。xGWGGSNgenerallydoesnotneedto

connectto().

A)OCS

B)PCRF

OSGSN

D)HLR

答案:D

解析:

50.[單選題]下列哪一個(gè)是測(cè)量任務(wù)中沒有的采集粒度?()_x000D一

A)15分鐘

B)30分鐘

C)45分鐘

D)60分鐘

答案:C

解析:3

51.[單選題]CGF是一個(gè)邏輯實(shí)體,物理上它可以與GSN合設(shè),也可以單獨(dú)成為一個(gè)物理實(shí)體,名為(

)O

A)CU

B)CG

OCGD

D)CC

答案:B

解析:

52.[單選題]下面關(guān)于計(jì)費(fèi)的說明正確的是OoWhichoffollowingdescriptionsiscorrect

aboutcharging?()

A)OCS是負(fù)責(zé)在線計(jì)費(fèi)的,PDSN只需要跟OCS對(duì)接即可完成所有的計(jì)費(fèi)任務(wù)。OCSisusedfor

onlinecharging,andPDSNonlyneedstointerconnectwithOCStocompleteallcharging

tasks.

B)IN同PDSN進(jìn)行相接可以完成后付費(fèi)用戶的計(jì)費(fèi)。INinterconnectswithPDSNtorealize

chargingoperationsofpost-paidusers.

C)AAA上可以完成所有場(chǎng)景的計(jì)費(fèi)任務(wù)。AAAcancompletethechargingtaskunderall

scenarios.

D)PDSN需要同AAA和OCS同時(shí)對(duì)接,一個(gè)負(fù)責(zé)離線計(jì)費(fèi),一個(gè)負(fù)責(zé)在線計(jì)費(fèi)。PDSNneedsto

interconnectwithAAAandOCSatthesametime:oneisforofflinecharging,andthe

otherisforonlinecharging.

答案:D

解析:

53.[單選題]在UMAC-SGSN中,OMP的上電方式為:()

A)Fastmode

B)Biosharddisk

C)Ossetup

D)BiosUSB

答案:A

解析:

54.[單選題]uMACSGSNOMM網(wǎng)管日志不包括()。OMMlogsoftheuMACSGSNdonotinclude(

).

A)操作日志OPeratiOnlog

B)安全日志SeeUritylog

C)系統(tǒng)日志SyStemlog

D)告警日志alarmlog

答案:D

解析:

55.[單選題]ZXUNXGW中,通過23/10000端口Telnet到MPU單板,需要輸入用戶名和密碼,該用戶名

和密碼是()。

A)zteZte

B)adminadmin

C)rootroot

D)rootklinux

答案:A

解析:

56.[單選題]用戶附著牽涉到的網(wǎng)元不包括()網(wǎng)元。WhichofthefollowingNEsisnot

involvedinsubscriberattachment?()

A)RNC

B)SGSN

OHLR

D)GGSN

答案:D

解析:

57.[單選題]ZXUNuMΛC-Gn∕GpSGSN設(shè)備長(zhǎng)期運(yùn)行環(huán)境的溫度要求為()。Temperature

requirementsfortheZXUNuMAC-Gn/GpSGSNLong-Termoperatingis().

A)5℃?40℃

B)0℃~50℃

C)0℃~40℃

D)0℃~30℃

答案:C

解析:

58.[單選題]PDSN的OMC服務(wù)端啟動(dòng)失敗,日志中報(bào)緩存空間不夠rtjava.net.SocketException:No

bufferspaceavailable(maximumconnectionsreached?):connect)v,需要如何處理?()

A)重啟服務(wù)器,然后再啟動(dòng)OMC服務(wù)端。

B)清理安裝OMC軟件的D盤的空間,然后再重啟OMe服務(wù)端。

C)將OMC服務(wù)器C盤的temp目錄清空。

D)重新安裝OMC服務(wù)端。

答案:C

解析:

59.[單選題]uMAC系統(tǒng)中,ECMM的槽位是。。IntheuMΛCsystem,theECMMboardis

installedinfollowingslots:().

A)主備分別為9和10槽Slot9/10formaster/slaveboards

B)主備分別為21和22槽SlOt21/22formaster/slaveboards

C)主備分別為5和6槽SlOt5/6formaster/slaveboards

D)主備分別為29和30槽SlOt29/30formaster/slaveboards

答案:D

解析:

60.[單選題]如何在AAA中導(dǎo)出WLAN用戶,使用下面哪條語句?()

A)select*fromras_naisubscriberwherenrat_type_l=O;

B)select*fromras_naisubscriberwherenrat_type1=1;

C)select*fromras_naisubscriberwherenat_type_l=O;

D)select*fromras_naisubscriberwherenat_type_l=l;

答案:B

解析:

6L[單選題]主備系統(tǒng)倒換應(yīng)選擇話務(wù)量小的時(shí)間段進(jìn)行,并且嚴(yán)禁頻繁倒換,兩次倒換間隔不得少

TOoTheactive/standbychangeovershouldbeperformedwhenthetrafficislow,and

frequentchangeoverisstrictlyprohibited,andthechangeoverintervalcannotbeless

than().

A)10分鐘10minutes

B)20分鐘20minutes

C)30分鐘30minutes

D)I個(gè)小時(shí)1hour

答案:C

解析:

62.[單選題]使用串口線進(jìn)行獨(dú)立單板的調(diào)試,超級(jí)終端設(shè)置的波特率應(yīng)該為()。While

debuggingtheindependentboardthroughtheserialcable,Weshouldsetthebaudrate

ontheHyperTerminalto().

A)9600

B)11500

C)115200

D)9650

答案:C

解析:

63.[單選題]SGSN調(diào)試時(shí),使用的串口調(diào)試線類型為()oDuringSGSNdebugging,thetypeof

theserialdebuggingcableis().

A)C232-004

B)C232-005

C)C232-006

D)C232-007

答案:A

解析:

64.[單選題]EV-DO的認(rèn)證分兩部分:ANTeVel認(rèn)證和IPTeVeI認(rèn)證,AN-AAA作為AN的認(rèn)證服務(wù)器

,承擔(dān)AN-LeVel級(jí)的認(rèn)證功能。ANTeVeI位于AT和AN之間,被稱為InnerCHAP認(rèn)證,通過()接口

實(shí)現(xiàn)接入鑒權(quán)。EV-DOauthenticationisdividedintotwoparts:AN-Ievelauthentication

andIP-levelauthentication.AN-ΛΛΛshoulderstheAN-Levelauthenticationfunctionas

theauthenticationserverofAN.TheAN-IevelauthenticationislocatedbetweentheAT

andtheAN,knownasInnerCHAPauthentication,andtheaccessauthenticationis

carriedoutthroughthe()interface.

A)Λ8

B)A9

OAlO

D)A12

答案:D

解析:

65.[單選題]關(guān)于CPUGRoUP主備目前只支持O主備模式。

A)l:l

B)1+1

01+3

D)負(fù)荷分擔(dān)

答案:B

解析:

66.[單選題]MS向外部數(shù)據(jù)網(wǎng)發(fā)送數(shù)據(jù)時(shí),SGSN根據(jù)()而得出GGSNIP地址。

A)APN經(jīng)域名解析

B)MS的動(dòng)態(tài)/靜態(tài)IP地址

C)隧道標(biāo)識(shí)TEID

D)NSAPl與MS的IMSl

答案:A

解析:

67.[單選題]虛擬化XGW規(guī)范要求使用什么協(xié)議發(fā)布地址池

A)靜態(tài)路由

B)0SPF

OBGP

D)以上均可

答案:C

解析:3

68.[單選題]虛擬化UMAC中,負(fù)責(zé)處理控制面用戶信令的虛機(jī)是

A)OMP

B)CMP

C)SMP

D)CDB

答案:B

解析:2

69.[單選題]當(dāng)移動(dòng)性管理處于()狀態(tài)下,MS和SGSN上下文中沒有有效的MS位置或路由信息,

MS不可及。_x0OOD_

A)PMM-DETACHED

B)PMM-IDLE

OPMM-CONNECTED

D)以上都不是(NOnoftheabove)

答案:A

解析:1

70.[單選題]PS擴(kuò)容失敗時(shí),以下哪項(xiàng)不必在應(yīng)急倒回時(shí)操作?WhenPSexpansionfails,which

ofthefollowingoperationsisnotneededduringtherollback?()

A)恢復(fù)擴(kuò)容前配置數(shù)據(jù)Restoretheconfigurationdatabeforeexpansion.

B)業(yè)務(wù)測(cè)試PerfOrnIservicetests.

C)重新加載前臺(tái)版本Reloadtheforegroundversion.

D)拔出新增的單板RenlOVethenewboard.

答案:c

解析:

71.[單選題]CCG需要支持在線計(jì)費(fèi)和離線計(jì)費(fèi)兩種方式。對(duì)于在線計(jì)費(fèi)CCG要與上層計(jì)費(fèi)系統(tǒng)。進(jìn)

行信令交互。TheCCGsupportsbothonlinechargingandofflinecharging.Fortheonline

chargingmode,theCCGexchangessignalingwith(),whichistheupper-levelbilling

system

A)AAA

B)HΛΛΛ

OOCS

D)PPS

答案:C

解析:

72.[單選題]在Ga輸入配置中,目前CG支持單地址和多地址兩種情形,其中前臺(tái)網(wǎng)元使用單地址時(shí)

,使用端口號(hào)是()OInGaconfiguration,nowtheCGsupportsbothsingleaddressand

multipleaddresses.Whentheforegroundnetworkelementusessingleaddress,theport

number()isused.

A)35000+模塊號(hào)35000+modulenumber

B)36000+模塊號(hào)36000+modulenumber

C)36001

D)36002

答案:A

解析:

73.[單選題]PDSN規(guī)則文件ps_pmop_rule.xml的存放路徑()0ThePDSNrulefile

"ps_pmop_rule.xml"issavedunderthepath().

A)/sysdiskθ/

B)/slave/sysdiskθ/

C)/datadiskθ∕pmop

D)∕sysdiskO∕DΛTΛO

答案:C

解析:

74.[單選題]硬盤病毒檢查及病毒庫更新一般在哪種例行維護(hù)中檢查Oo

A)日例行維護(hù)

B)周例行維護(hù)

C)月例行維護(hù)

D)年例行維護(hù)

答案:B

解析:

75.[單選題]SGSN在路由過程中需要在不同的接口協(xié)議之間進(jìn)行轉(zhuǎn)換,這一過程稱為OoDuring

theroutingprocess,theSGSNneedstomakeconversionbetweendifferentinterface

protocols.Thisprocessiscalled().

A)尋址AddreSSing

B)交換EXChange

C)適配AdaPtatiOn

D)轉(zhuǎn)發(fā)ForWard

答案:D

解析:

76.[單選題]預(yù)付費(fèi)用戶,配額用盡,PDSN通過發(fā)送()報(bào)文去AAA更新配額。

A)Access-request

B)OnlineAccess-request

C)Access-Accept

D)OnlineAccess-Accept

答案:B

解析:

77.[單選題]GGSN上線之前,需要檢查SNMP配置,下面說法不正確的是()。BeforetheGGSN

systemgetsonline,weneedtocheckSNMPconfigurations.Whichofthefollowing

statementsiscorrect?()

A)snmp-serverhostvrfmng酉己置了EMS的地址。Set,,snmp-serverhostvrfmngπtotheIP

addressoftheEMS.

B)snmp-servertrap-source配置了XGW的管理口地址。Set,,snmp-servertrap-sourceπtotheIP

addressofthemanagementonthexGW.

C)snmp-serverComlTIUnity配置了讀串和寫串。Set,,snmp-servercommunityπtoreadingand

writingstrings.

D)snmp-serverUSer配置了不同權(quán)限的用戶。Setπsnmp-serveruser,ftouserswithdifferent

rights.

答案:D

解析:

78.[單選題]在設(shè)置APPliCation資源時(shí),設(shè)置StartProgram屬性為()。Whilesettingthe

Applicationresource,weshouldsettheattributeofStartProgramto().

A)/home/omc∕zxhome∕omcboot∕omcstop

B)/home/omc∕zxhome∕omcboot/omcclean

C)/home/omc/zxhome∕omcboot/omcstart

D)/home/omc/zxhome∕omcboot/omcmon.vcs

答案:C

解析:

79.[單選題]關(guān)于GGSN的IP地址、路由配置,下面說法不正確的是O。Whichofthefollowing

statementsiswrongaboutIPaddressandrouteconfigurationsontheGGSN?()

A)子接口的MAC偏移需要與父接口不能一樣。MACoffsetofthesub-interfacecannotbethe

sameasthatoftheparentinterface.

B)PFU對(duì)外物理接口端口模式需要和互聯(lián)設(shè)備端口模式一致,速率、協(xié)商模式雙方必須一樣。The

portmode,rate,andnegotiationmodeshouldbecompletelythesamebetweenthe

externalphysicalinterfaceofthePFUandtheinterconnecteddevice.

C)PFU物理端口配置必須有端口描述,便于數(shù)據(jù)核查和日常維護(hù)。ThephysicalportofthePFU

musthavethecorrespondinginterfacedescription,tofacilitatedatacheckingand

dailymaintenance.

D)根據(jù)組網(wǎng)規(guī)劃指導(dǎo)要求,設(shè)備開局網(wǎng)絡(luò)規(guī)劃必須是雙平面,不允許有單點(diǎn)故障,開局中要進(jìn)行組網(wǎng)

倒換測(cè)試。Accordingtorequirementsofnetworkingplanning,thenetworkmustbeadual-

planenetwork,withnosingle-pointfault.Duringofficecommissioning,weshouldcarry

outnetworkswitchovertests.

答案:A

解析:

80.[單選題]時(shí)間統(tǒng)計(jì)類型配置為“基于業(yè)務(wù)的時(shí)長(zhǎng)”,一般適用于以下哪種業(yè)務(wù)?()

A)P2P

B)HTTP

OFTP

D)RTSP

答案:D

解析:

81.[單選題]下面說法正確的是OoWhichofthefollowingstatementsiscorrect?()

A)主用AAA宕機(jī)后,PDSN會(huì)自動(dòng)使用備用AAA,當(dāng)原主用AAA恢復(fù)正常,會(huì)自動(dòng)切到原主用AAA。When

themasterAΛΛisdown,PDSNwillautomaticallyswitchtotheslaveAΛΛ;afterthe

originalmasterAAAisrecoveredtonormal,PDSNwillautomaticallyswitchbacktothe

originalmasterΛΛA.

B)主用AAA宕機(jī)后,PDSN要手動(dòng)切換到備用AAA,當(dāng)原主用AAA恢復(fù)正常,要手動(dòng)切到原主用AAA。

WhenthemasterAAAisdown,youneedtomanuallyswitchthePDSNtotheslaveAAA;

aftertheoriginalmasterAAAisrecovered,youneedtomanuallyswitchthePDSNback

totheoriginalΛΛA.

C)主用AAA宕機(jī)后,PDSN要手動(dòng)切換到備用AAA,當(dāng)原主用AAA恢復(fù)正常,會(huì)自動(dòng)切到原主用AAA。

WhenthemasterAAAisdown,youneedtomanuallyswitchthePDSNtotheslaveAAA;

aftertheoriginalmasterAAAisrecovered,thePDSNcanautomaticallyswitchbackto

theoriginalmasterAΛA.

D)主用AAA宕機(jī)后,PDSN會(huì)自動(dòng)切換到備用AAA,當(dāng)原主用AAA恢復(fù)正常,要手動(dòng)切到原主用AAA。

WhenthemasterΛΛAisdown,thePDSNcanautomaticallyswitchtotheslaveAAA;after

theoriginalmasterAAAisrecovered,youneedtomanuallyswitchthePDSNbacktothe

originalmasterΛΛA.

答案:D

解析:

82.[單選題]在UMAC-SGSN中,內(nèi)置OMM的上電方式為()。

A)Fastmode

B)Biosharddisk

C)Ossetup

D)BiosUSB

答案:B

解析:

83.[單選題]uMAC平臺(tái)的DNS刀片,如果DNS刀片啟動(dòng)后進(jìn)去是黑屏,應(yīng)該如何設(shè)置。TheDNSblade

isusedontheuMACplatform.IfthesystemdisplaysablackscreenaftertheDNSblade

isstarted,howtosolvethisproblem?()

A)需要重新安裝該刀片的操作系統(tǒng)。Weneedtore-installtheoperatingsystemofthe

blade.

B)只能使用顯示器和鍵盤連接到刀片上才能看到啟動(dòng)界面。Wecanonlyseethebootinterface

afterconnectingamonitorandakeyboardtotheblades.

C)要進(jìn)入到CMM中,將啟動(dòng)方式設(shè)置成本地啟動(dòng)。WeneedtologintotheCMMandsetthe

bootmodetolocal.

D)需要先加載UMAC的獨(dú)立單板的版本文件后,DNS刀片才能啟動(dòng)正常。TheDNSbladecanboot

normallyonlyafterwehaveloadedversionfilesoftheindependentboardontheuMΛC.

答案:C

解析:

84.[單選題】目前XGw系統(tǒng)只支持上傳()個(gè)DPI規(guī)則配置文件。Atpresent,thexGWsystemonly,

supportsuploading()configurationfilesforDPIrules.

A)4

B)5

C)6

D)7

答案:B

解析:

85.[單選題]下列關(guān)于DO用戶的流量總和的計(jì)算方法,說法正確的是Oo

A)''PDSN使用簡(jiǎn)單IP業(yè)務(wù)且SO為33的前向流量總數(shù)"和''PDSN使用簡(jiǎn)單IP業(yè)務(wù)且SO為33的反向流量

總數(shù)”的總和

B)''PDSN使用簡(jiǎn)單IP業(yè)務(wù)且So為59的前向流量總數(shù)"和''PDSN使用簡(jiǎn)單IP業(yè)務(wù)且SO為59的反向流量

總數(shù)”的總和

C)“PDSN使用簡(jiǎn)單IP業(yè)務(wù)且SO為33的前向流量總數(shù)"和''PDSN使用簡(jiǎn)單IP業(yè)務(wù)且SO為59的反向流量

總數(shù)”的總和

D)''PDSN使用簡(jiǎn)單IP業(yè)務(wù)且SO為59的前向流量總數(shù)"和''PDSN使用簡(jiǎn)單IP業(yè)務(wù)且SO為33的反向流量

總數(shù)”的總和

答案:B

解析:

86.[單選題]ZXUN-χGWGGSN新增動(dòng)態(tài)地址池后會(huì)自動(dòng)生成ACL。由于全局ACL條目有限制,需要合理

規(guī)劃地址池。下列地址段配置生成ACL最少的是()。TheZXUN-xGWGGSNwillgenerateanΛCL

whenanewlocalIPpoolisadded.SincetheglobalnumberofACLentriesislimited,

weneedtoplantheIPpoolreasonably.Onthefollowingaddresssegment,thenumberof

ACLentriesistheleast:().

A)segment10,123.1.010.123.1.255mask255.255.255.0Cpulocation2/1

B)segment10.123.1.110.123.1.254mask255.255.255.0cpulocation2/1

C)segment10.123.1.110.123.1.255mask255.255.255.0Cpulocation2/1

D)segment10.123.1.210.123.1.255mask255.255.255.0cpulocation2/1

答案:A

解析:

87.[單選題]計(jì)費(fèi)網(wǎng)關(guān)與計(jì)費(fèi)中心之間的文件傳輸接口是()。

A)FTP/FTAM

B)Abis

Olu

D)Ga

答案:A

解析:

88.[單選題]SLB必須在哪種類型的單板上配置?()

A)MPU

B)PSU

OCSU

D)SFU

答案:C

解析:

89.[單選題]V4UMAC中,在EGBS上作為ECMM控制面端口是()?

A)ETH-M

B)ETH-Cl

C)HOST-232

D)ETH-MPl

答案:B

解析:

90.[單選題]關(guān)于DPl的描述正確的是()。Whichofthefollowingdescriptionsiscorrect

aboutDPI?()

A)DPI是用來進(jìn)行深度報(bào)文分析的,不需要單獨(dú)的單板。DPlisusedfordeeppacketanalysis,

anditisunnecessarytouseaseparateboard.

B)DPl是用來進(jìn)行深度性能分析的,不需要單獨(dú)的單板。DPlisusedfordeepperformance

analysis,anditisunnecessarytouseaseparateboard.

C)DPl是用來進(jìn)行深度報(bào)文分析的,需要單獨(dú)的單板。DPlisusedfordeeppacketanalysis,

andaseparateboardisneeded.

D)DPl是用來進(jìn)行深度性能分析的,需要單獨(dú)的單板。DPlisusedfordeepperformance

analysis,andaseparateboardisneeded.

答案:A

解析:1

91.[單選題]xGWGGSN上卸載APN用戶的命令是()□ThecommandtounloadAPNusersinxGW

GGSNis().

A)unload

B)deactive-pdp

C)unloadpdp

D)deactive

答案:B

解析:

92.[單選題]xGW(PDSN)激活DPl規(guī)則文件的命令為()oToactivateDPIrulefileofthexGW

(PDSN),runthecommand().

A)xGW(config-χgw-pdsn)ttdpi-fiIegetftp//zte:zte@l.2.3.4/DPI_21P5B3.bi

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