FINAL / ACTUAL EXAM QUESTIONS AND ANSWERS
(A+ GUIDE SOLUTION) NEWEST
2025/2026|GUARANTEED SUCCESS
TheKOpenKSystemsKInterconnectionKreferenceKmodelK(OSI/RM)KNetworkKLayerKserve
sKwhichKprimaryKpurpose?K-KCORRECTKANSWER-
ItKusesKLayerK3KaddressesKtoKcreateKmultipleKroutedKnetworks.
TheKaddressK68.56.189.17KbelongsKtoKwhichKInternetKprotocolK(IP)Kclass?K-
KCORRECTKANSWER-ClassKA.
WhatKhappensKtoKaKdatagramKsentKbyKaKhigherKlevelKprotocolKtoKaK127.x.y.zKaddress
?K-KCORRECTKANSWER-
TheKdatagramKloopsKbackKinsideKtheKhostKandKneverKleavesKtheKnetworkKinterfaceKca
rdK(NIC).
WhichKdeviceKevaluatesKandKactsKuponKaKpacket'sKInternetKprotocolK(IP)Kaddress?K-
KCORRECTKANSWER-Router.
TheKNetworkKLayerKmustKdoKwhatKtoKaKreceivedKframeKfirst,KinKorderKtoKdetermineKth
eKrouteKoverKwhichKitKwillKforwardKtheKdatagramKtoKtheKnextKnetwork?K-
KCORRECTKANSWER-DecapsulateKtheKpacket.
WhatKnetworkKinformationKcanKbeKdeterminedKfromKaKlogicalKInternetKprotocolK(IP)Kad
dress?K-KCORRECTKANSWER-TheKhostKportionKandKnetworkKportion.
TheKphysicalKaddressKofKaKdeviceKisKprocessedKbyKwhichKlayerKofKtheKOpenKSystem
sKInterconnectionKreferenceKmodelK(OSI/RM)?K-KCORRECTKANSWER-
TheKDataKLinkKLayer.
WhichKlayerKofKtheKOpenKSystemsKInterconnectionKreferenceKmodelK(OSI/RM)KwouldK
youKsuspectKasKbeingKtheKproblemKwhenKpacketsKareKarrivingKatKtheKserverKbutKnoKi
nformationKisKbeingKreturnedKtoKtheKclient?K-KCORRECTKANSWER-
TheKTransportKLayer.
AllKcomputersKrunningKonKtheKtransmissionKcontrolKprotocol/InternetKprotocolK(TCP/IP)
KsuiteKhaveKwhichKofKtheKfollowingKinKcommon?K-KCORRECTKANSWER-
EachKcomputerKisKassignedKitsKownKInternetKprotocolK(IP)Kaddress.
, AKrepeaterKoperatesKatKwhichKlayerKofKtheKOpenKSystemsKInterconnectionKreferenceK
modelK(OSI/RM)?K-KCORRECTKANSWER-TheKPhysicalKLayer.
WhichKoneKofKtheKfollowingKprotocolsKallowsKemailKclientsKtoKdownloadKtheirKmessag
esKfromKanKemailKserver?K-KCORRECTKANSWER-
PostKOfficeKProtocolKversionK3K(POP3).
HypertextKtransferKprotocolK(HTTP)KisKwhatKtypeKofKprotocol?K-
KCORRECTKANSWER-Stateless.
OnKtheKfileKtransferKprotocolK(FTP)Kserver,KwhatKmanagesKclientKrequestsKforKfileKretri
evalKorKtransmission?K-KCORRECTKANSWER-AKdaemon.
WhatKareKtheKprimaryKrequirementsKtoKconnectKtoKaKtransmissionKcontrolKprotocol/Int
ernetKprotocolK(TCP/IP)Knetwork?K-KCORRECTKANSWER-
UniqueKpairsKofKNetworkKLayerKandKTransportKLayerKaddressesKandKuseKofKtheKTCP/
IPKprotocolKsuite.
WhatKtypeKofKdeliveryKmethodKusesKanKemailKserverKbetweenKtheKsenderKandKtheKre
ceiverKofKmessages?K-KCORRECTKANSWER-Store-and-forward.
HostKnamesKandKuniformKresourceKlocatorsK(URL)KareKresolvedKtoKInternetKprotocolK(
IP)KaddressesKbyKwhichKofKtheKfollowingKapplications?K-KCORRECTKANSWER-
DomainKNameKSystemK(DNS).
WhatKhappensKwhenKtheKbrowserKapplicationKfinishesKdownloadingKtheKfilesKnecessar
yKtoKdisplayKaKwebKpage?K-KCORRECTKANSWER-
TheKbrowserKandKserverKdropKtheKconnections,KandKtheKbrowserKmaintainsKtheKpage
KandKitsKelementsKinKlocal Kmemory.
WhichKemailKprotocolKenablesKtheKmessagesKtoKbeKviewedKwithoutKfirstKdownloadingK
themKfromKtheKemailKserver?K-KCORRECTKANSWER-
InternetKMessageKAccessKProtocolKversionK4K(IMAP4).
WhatKtypeKofKserverKmaintainsKanKaccessKlogKtoKassistKwithKtroubleshootingKandKtrac
kingKdownKmaliciousKusers?K-KCORRECTKANSWER-
AKfileKtransferKprotocolK(FTP)Kserver.
AKstore-and-forwardKemailKsystemKwillKnotKdeliverKmessagesKuntil:K-
KCORRECTKANSWER-TheKhostKrequestsKtheKinformation.
WhatKisKtheKbinaryKequivalentKofKdecimalK136?K-KCORRECTKANSWER-10001000.
ConvertKtheKInternetKprotocolK(IP)KaddressK172.68.10.2KfromKdecimalKtoKbinary:K-
KCORRECTKANSWER-10101100.01000100.00001010.00000010.