Cisco642436最新题库geg.docx
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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
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