Cisco642436最新题库geg.docx

Cisco642436最新题库geg.docx

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Cisco642436最新题库geg

CiscoVoiceoverIP（CVOICE）

Number:

642-436

QUESTION1

Refertotheexhibit.YouhavebeenaskedtoconfigureadialpeeronR2thatwillmatchonlytheextensionsofthefourtelephonesattached.Whichdial-peerstatementwillyouuse?

A.

dial-peervoice1pots

destination-pattern5552.[0-5]0

B.

dial-peervoice1pots

destinationpattern5552[5-6].0

C.

dial-peervoice1pots

destination-pattern555[2-5][56]

D.

dial-peervoice1pots

destination-pattern5552[5-6][05]0

Answer:

D

Section:

（none）

Explanation/Reference:

QUESTION2

Refertotheexhibit.Whenextension201-555-1000dials404-555-1200,howarethedigitsmanipulatedinR1sothattheyarepresentedcorrectlyatR2?

A.

TheoutboundVoIPdialpeerismatchedandalldigitsaresent.

B.

Thedigits404-555arestrippedoffbeforematchingtheoutboundPOTSdialpeer.

C.

Thedigits404-555arestrippedoffbytheconnectiontrunkandR2receivesonly1200.

D.

R1collectsthe1200andprependsthetie-linedigits404555.ThatnumberismatchedtoaVoIPdialpeerandsenttotheappropriateaddress.

Answer:

A

Section:

（none）

Explanation/Reference:

QUESTION3

Refertotheexhibit.YourcustomerwantstoconvergetheexistingPBXnetworkwiththeIPnetwork.ThethreeremoteofficeshavevarioustypesofPBXs.Thecustomerisusingacombinationoftie-linesandtrunkstoconnectthePBXstoday.Whichkindofconnectionshouldbeimplementedtoallowcallstobeplacedfrom201-555-1000to727-555-1000sothatwhenthecalliscompleted,networkresourcesarereturnedforotheruses?

A.

PLAR

B.

trunk

C.

tie-line

D.

answer-mode

Answer:

C

Section:

（none）

Explanation/Reference:

QUESTION4

Whichdialplancharacteristicshowsthemostobviousimprovementbydroppinganumbertranslationstep?

A.

availability

B.

post-dialdelay

C.

scalability

D.

hierarchicaldesign

Answer:

B

Section:

（none）

Explanation/Reference:

QUESTION5

WhichoptionistrueconcerningtheMGCPcallagent?

A.

actsonlyasarecorderofcalldetails

B.

providesonlycallsignalingandcallsetup

C.

managesallaspectsofthecallandvoicestream

D.

monitorsthequalityofeachcallaftersetup

Answer:

B

Section:

（none）

Explanation/Reference:

QUESTION6

AtwhatpointdoestheMGCPcallagentreleasethesetupofthecallpathtotheresidentialgateways?

A.

afterthecallagenthasbeennotifiedthataneventoccurredatthesourceresidentialgateway

B.

afterthecallagenthasbeennotifiedofaneventandhasinstructedthesourceresidentialgatewaytocreateaconnection

C.

doesnotreleasecallpathsetup

D.

afterthecallagenthassentaconnectionrequesttoboththesourceanddestinationandhasrelayedamodify-connectionrequesttothesourcesothatthesourceanddestinationcansetupthecallpath

E.

afterthecallagenthasforwardedsessiondescriptionprotocolinformationtothedestinationfromthesourceandhassentamodifyconnectiontothedestinationandacreate-connectionrequesttothesource

Answer:

D

Section:

（none）

Explanation/Reference:

QUESTION7

RefertotheexhibitforIPaddressesandtelephonenumbers.YouareworkingwithacustomeropeningasmallsalesofficeinAtlanta.YouwanttheuserinAtlantatobeabletodialintothePBXinNewYorkovertheIPWAN.TheNewYorkPBXusesgroundstart,atwo-wireoperation,andDTMFdialing.ChoosethecorrectFXOportconfigurationcommandsforNewYork.

A.

voice-port1/0/0

signalground-start

operation2-wire

dial-typedtmf

B.

voice-port1/1/1

destination2015551212

signalground-start

operation2-wire

type1

dial-typedtmf

C.

voiceport1/0/0

sessiontargetipv4:

172.16.1.1

destination2015551212

signalground-start

operation2-wire

dial-typedtmf

D.

voiceport1/0/0

sessiontargetipv4:

172.16.1.1

source2015551212

signalwink-start

operation2-wire

dial-typedtmf

Answer:

A

Section:

（none）

Explanation/Reference:

QUESTION8

Refertotheexhibit.

LighthorseEquineManagementwouldliketoinvestigateconvergingvoiceanddataontheirexistingT1FrameRelayWANlinkbetweenNewYorkandAtlanta.Currentlythefollowinglistofapplicationsareconsumingnomorebandwidththanwhatislistedonthissegmentofthenetwork.

T1link1536kbps

e-mail75kbps

internet200kbps

Oracle500kbps

FTP250kbps

Total1025kbps

Thecustomerhasallocated25%oftheWANlinkforroutingupdatesandotheroverhead.TheywouldliketoincreasethenumberofsamplesencapsulatedineachPDUto40ms.Youhavecalculated6bytesofoverheadforFrameRelay,nocRTP,andtheuseoftheG.711codec.Howmanysimultaneouscallscouldbeplacedonthislink?

A.

0calls

B.

1call

C.

2calls

D.

nomorethan5calls

E.

nomorethan10calls

F.

nomorethan20calls

Answer:

B

Section:

（none）

Explanation/Reference:

QUESTION9

Refertotheexhibit.AQoSstrategyhasalreadybeendeployedontheLAN.ChoosethreeWANQoSbestpracticesthatshouldbeusedovertheWANlink.（Choosethree.）

A.

ImplementNBAR.

B.

Implementadmissioncontrol.

C.

MarkvoicetrafficasEFinDSCP.

D.

Markvoicetraffichighestpriorityin802.1p.

E.

UsecRTPtomaximizebandwidthutilization.

F.

ConfigureaccessswitchestotrusttrafficfromIPphones.

Answer:

BCE

Section:

（none）

Explanation/Reference:

QUESTION10

WhensettingupaVoIPcall,whatisthefirstthingagatewayroutertriestomatchtoadialednumber?

A.

callleg

B.

IProute

C.

sessiontarget

D.

destinationpattern

Answer:

D

Section:

（none）

Explanation/Reference:

QUESTION11

Refertotheexhibit.Usersarenotabletocompleteacallfrom678-555-1212to770-555-1111.Whatisthecorrectdiagnosisfortheproblem?

A.

incorrectdestination-patterninrouter1

B.

incorrectPOTSdial-peerstatementinrouter2

C.

incorrectsession-targetstatementinrouter2

D.

incorrectportstatementinrouter1potsdialpeer

E.

missingnodigit-striponthevoipdialpeerinrouter1

Answer:

A

Section:

（none）

Explanation/Reference:

QUESTION12

TheSJlocalzonecontainsagatekeeperthatcontrolstwogateways,SJ1andSJ2.Bothgatewaysprovideaccesstoareacode408.WhichtwocommandstringsshouldbeenteredintothegatekeepertogivetheSJ2gatewaypriorityovertheSJ1gateway?

（Choosetwo.）

A.

zoneprefixSJ408gw-priority6SJ1

B.

zoneprefixSJ408gw-priority6SJ2

C.

zoneprefixSJ408gw-priority10SJ1

D.

zoneprefixSJ408gw-priority10SJ2

E.

zoneprefixSJ408gw-priority0SJ2,10SJ1

F.

zoneprefixSJ408gw-priority6SJ1,10SJ2

Answer:

AD

Section:

（none）

Explanation/Reference:

QUESTION13

Refertotheexhibit.HighlandParkPropertyDevelopmentisintegratingaCiscoUnifiedCommunicationsManagerExpresssystemwiththeexistingPBXviaanE1QSIGtrunk.Aftertheinitialconfiguration,nocallscanbeplacedfromIPphonestoPBXphones.Howcanthisproblemberesolved?

A.

IncreasetheISDNT302timertoallowmoretimeforcallsetup.

B.

Addthecommandisdnnegotiate-bchantotheserialinterface.

C.

Addthecommandisdncontiguous-bchantotheserialinterface.

D.

Changethechannelselectionorderfromdescendingtoascending.

Answer:

B

Section:

（none）

Explanation/Reference:

QUESTION14

Refertotheexhibit.TheCarmichaelcallerdialsthesiteaccesscodeforMerrimack（6）followedbythefour-digitextensionnumberofthedestinationphone（0124）.IfthecallisgoingtogoacrosstheIPWAN,whichactionwillhavetobetaken?

A.

Translate50124to5125550124.

B.

Stripthesiteaccesscodeandsendfourdigits.

C.

Stripthesiteaccesscodeandprepend1512555.

D.

Donothingbecausethesiteaccesscodematchesthelastfivedigitsofthetargetnumber.

E.

Stripthesiteaccesscode,sendfourdigits,thenprependtheaccesscodewhenitreachestheMerrimackgateway.

Answer:

B

Section:

（none）

Explanation/Reference:

QUESTION15

Whichpathselectionmechanismletsyouchooseeithertheevenoroddchannelsfirst?

A.

huntgroups

B.

trunkgroups

C.

tailendhopoff

D.

CallAdmissionControl

Answer:

B

Section:

（none）

Explanation/Reference:

QUESTION16

WhichmechanismdoyouusetoimplementcallingprivilegesonCiscoUnifiedCommunicationsManagerExpress?

A.

CoS

B.

QoS

C.

CAC

D.

COR

E.

SRST

Answer:

D

Section:

（none）

Explanation/Reference:

QUESTION17

RefertotheH.323messageintheexhibit.Whatisthegatewaydoingwiththegatekeeper?

A.

initialregistration

B.

fullregistration

C.

lightweightregistration

D.

registrationretry

Answer:

C

Section:

（none）

Explanation/Reference:

QUESTION18

InwhichthreeRASmessagesisthetechnologyprefixsent?

（Choosethree.）

A.

GRQ

B.

RRQ

C.

RCF

D.

IRR

E.

IRQ

Answer:

ABE

Section:

（none）

Explanation/Reference:

QUESTION19

Refertotheoutputfromthedebugh225asn1commandintheexhibit.Youhaveconfiguredagatekeeperwithtwolocalzones,hqandbr.YouwantthegatewayatthebranchlocationtoregisterwithzoneBR.Whatneedstobecorrectedinthebranchgatewaytoresolvetheissue?

A.

ChangetheIPaddressintheh323-gatewayvoipidcommand.

B.

Changethegatekeeper-idintheh323-gatewayvoipidcommand.

C.

AddazoneremoteforzoneBRsothegatewaycanregisterwiththecorrectzone.

D.

Changethegatekeeper-idandtheIPaddressintheh323-gatewayvoipidcommand.

Answer:

B

Section:

（none）

Explanation/Reference:

QUESTION20

WhichthreeservicesaresupportedbyCUBEwhensupportingH323-to-SIPcalls?

（Choosethree.）

A.

SIPcausecodes

B.

mediaflow-around

C.

mediaflow-through

D.

codectransparentsupport

E.

TransportLayerSecuri