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Computer Networks Exam 1 Questions And Answers

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Computer Networks Exam 1 Questions And Answers Computer Networks Exam 1 Questions And Answers Computer Networks Exam 1 Questions And Answers

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Computer Networks Exam 1 Questions
And Answers
AnalogkCommunicationk-kCORRECTkkANSWER-
technologykwhichkuseskAnalogksignalkforktransmissionkofkinformation
-Affectedkbyknoise
-Errorkprobabilitykhighkduektokreadingkerror
-Hardwarekiskcomplicatedkandklesskflexible
-Lowkcost/HighkAccuracy
-Highkpowerkiskrequired
-Lesskportablekaskthekcomponentskarekheavy
-Amplitudekandkanglekmodulation
-Analogksignalskcankbekpresentedkbyksinekwaves
-Consistskofkcontinuouskvalues
-Analogksignalskcomprisekvoice,ksoundkanalogkclock,kallktheknaturalksignals

AnalogkSignalsk-kCORRECTkkANSWER-Continuousktime-
varyingksignals;kHaskcontinuouskvaryingkamplitudekwithktime

ApplicationkLayerk(7)k-kCORRECTkkANSWER--Softwarekforkend-users
ex:kfirewalls,kwebkbrowsers,kemailkclients
exkprotocol:kX.400kusedktokprovidekelectronickdirectorykservices
-kX.400kusedktokhandlekmessages

ApplicationkLayerkTCP/IPk-kCORRECTkkANSWER--
ThekTCP/IPkmodelkdoesknotkhaveksessionkorkpresentationklayers
-Ankapplicationkmaykincludeksessionkandkpresentationkfunctionskthatktheykrequired
-Itkiskabovekthektransportklayer
-
Itkuseskakreliablekconnectionktoksendkapplicationkmessageskbetweenkankapplicationkonkhos
t-Akandkankapplicationkrunningkonkhost-B
-Ex:kTELNET,kFTP,kSMTP,kSSH,kNTPk-kNetworkktimekprotocol

ApplicationskbasedkonkQualitykServicesk-kCORRECTkkANSWER-Reliablekdataktransfer
-Doeskakprotocolkprovideskakguaranteedkdatakdelivery?kWhatkarekdatakloss-
tolerantkapplications?
Throughput

, -
kAtkwhatkratek(bits/sec)kdoeskaksendingkprocesskcanksendkdataktokakreceivingkprocess?kBan

dwidth-sensitivekapplicationskhavekspecifickthroughputkrequirements.
Timing
-kDoeskakprotocolkcankguaranteekdatakdeliverykbeforekonktime?
Security
-kDoeskakprotocolkcankguaranteektheksecuritykrequirementkofkthekdata/communication?

ApplicationskofkOperatingkSystemsk-kCORRECTkkANSWER--MemorykManagement
-ProcesskManagement
-DevicekManagement
-FilekManagement
-Securitykofkapplications
-ControlkoverkthekSystem'skPerformance
-Jobkscheduling
-Errorkhandling
-Interfacekhardwarekandkapplicationksoftware

AreakSwitchingkOfficek-kCORRECTkkANSWER-SeveralkLSOskarekconnected
-ASOkarekinterconnected

BroadcastkNetworkk-kCORRECTkkANSWER--
Singlekcommunicationkchannelksharedkbykallkmachineskonktheknetwork
-Messageskcalledkpacketskarekreceivedkbykallkthekothers
-Radiokstationkbroadcastskaksignalktokmanyklisteners

BuskTopologyk-kCORRECTkkANSWER--
AllktheknodeskarekconnectedkthroughkaksinglekcablekknownkaskBACKBONE
-Atkonekmoment,konekmachinekiskmasterkandkcanktransmit
-Allkotherkmachinekstopskfromksending
-Akrandomkmechanismkresolveskconflictkifkmorekmachineskwantktoktransmitksimultaneously
-ex:kEthernet

circuitkswitchingk-kCORRECTkkANSWER-methodkforksharingktrunks
-Consistskofkaksetkofkswitcheskconnectedkbykphysicalklinks
-Connectionkbetweenktwokstationskiskakdedicatedkpathkmadekofkonekorkmoreklinks
-Eachkconnectionkuseskonlykonekdedicatedkchannelkonkeachklink
-
EachklinkkisknormallykdividedkintokNkchannelskbykusingkFrequencykDomainkModulationkorkTi
mekDomainkModulation

ClientkServerkModelk-kCORRECTkkANSWER--
Twokorkmorekcomputerskconnectedktogetherkusingkakmedium
-Clientkcomputerkrequestkservicekfromkakserver
-Serverkrespondsktokthekclient

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