计算机专业英语Chapter008.docx
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计算机专业英语Chapter008.docx
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计算机专业英语Chapter008
MultipleChoiceQuestions
1. Oneofthemostdramaticchangesinconnectivityandcommunicationsinthepastfewyearshasbeen:
A. widespreaduseofmobiledeviceswithwirelessInternetconnectivity
B. chatrooms
C. satelliteuplinks
D. runningprogramsonremotecomputers
2. Inacommunicationsystem,whichamongthefollowingoriginateandacceptmessagesintheformofdata,information,and/orinstructions?
A. Communicationchannel
B. Sendingandreceivingdevices
C. Connectiondevices
D. Datatransmissionspecifications
3. Inacommunicationsystem,whichamongthefollowingconvertmessagesintopacketsthatcantravelacrossthecommunicationchannel?
A. Connectiondevices
B. Sendingandreceivingdevices
C. Storagedevices
D. Secondarydevices
4. Whichphysicalconnectionisthefastest?
A. Twistedpair
B. Coaxialcable
C. Fiber-opticcable
D. Microwave
5. Whichamongthefollowingisconsideredaline-of-sightcommunicationmedium?
A. Broadcastradio
B. Satellite
C. Bluetooth
D. Microwave
6. WiMaxstandsfor:
A. Wide-areaaccessformaximumreach
B. Wide-arearangetomaximizeaccess
C. Worldwideinteroperabilityformicrowaveaccess
D. Worldwideaccesstomaximizeinteroperability
7. Microwavecommunicationuseshigh-frequency:
A. radiowaves
B. infrared
C. satellitecommunications
D. opticfibers
8. LTEstandsfor:
A. LongTermEvolution
B. LightTrafficEvolution
C. LaserTransmissionEntity
D. LongTimeEntry
9. TheGPSdeviceinanautomobileuseswhichcommunicationchannel?
A. Infrared
B. RadioFrequency(RF)
C. Microwave
D. Satellite
10. Aservicethatusesexistingtelephonelinestoprovidehigh-speedconnectionsiscalled:
A. WWAN
B. 3G/4G
C. Voiceband
D. DSL
11. Cellularservicesuse_____toprovidewirelessconnectivitytotheInternet.
A. ADSL
B. T1andT3cellularnetworks
C. DSL
D. 3Gand4Gcellularnetworks
12. Thecapacityofacommunicationchannelismeasuredin:
A. bandwidth
B. bitcapacity
C. bandrate
D. dataflow
13. Usingthistypeofcommunicationschannel,severaluserscansimultaneouslyuseasingleconnectionforhigh-speeddatatransfer.
A. Voiceband
B. Mediumband
C. Broadband
D. Baseband
14. EverycomputerontheInternethasauniquenumericaddresscalleda(n):
A. domainaddress
B. protocoladdress
C. IPaddress
D. Webaddress
15. ____istheprocessofbreakingdowninformationsentortransmittedacrosstheInternetintosmallparts.
A. Protocol
B. Bandwidth
C. Identification
D. Packetization
16. Theessentialfeaturesofthisincludeidentifyingsendingandreceivingdevices,andbreakinginformationintosmallpartsfortransmissionacrosstheInternet.
A. DNS
B. TCP/IP
C. FTP
D. HTTP
17. The______isthecentralnodethatcoordinatestheflowofdatabysendingmessagesdirectlybetweenthesenderandreceivernodes.
A. client
B. server
C. switch
D. gateway
18. Inacomputernetwork,thisnoderequestsandusesresourcesavailablefromothernodes.
A. Client
B. Server
C. Directoryserver
D. Host
19. ThisdeviceenablesconnectivitybetweentwoLANSoraLANandalargernetwork.
A. Networkgateway
B. Node
C. Hub
D. Router
20. AwirelessaccesspointthatprovidesInternetaccessinapublicplacesuchasacoffeeshop,library,bookstore,oruniversity.
A. Hotspot
B. NIC
C. Blindspot
D. Gateway
21. Anetworktopologyinwhichthecentralnodeisconnectedtotwoormoresubordinatenodesthatinturnareconnectedtoothersub-ordinatenodes.
A. Star
B. Bus
C. Mesh
D. Tree
22. Thistypeofnetworkstrategyusescentralcomputerstocoordinateandsupplyservicestoothernodesonthenetwork.
A. Peer-to-peer
B. Client/server
C. BitTorrent
D. PersonalAreaNetwork
23. Organizationsusethefollowingtoallowsuppliersandotherslimitedaccesstotheirnetworks.
A. Intranets
B. Extranets
C. Firewalls
D. Proxyservers
24. Allcommunicationsbetweenacompany'sinternalnetworksandtheoutsideworldpassthroughthisserver.
A. Basestation
B. Node
C. Supercomputer
D. Proxy
25. Remoteuserscanconnecttoanorganization'snetworkthroughthistypeofsecureprivateconnection.
A. VPN
B. DSL
C. WWAN
D. P2P
26. Thistypeofnetworktopologydoesnotuseaspecificphysicallayout.
A. Hybrid
B. Hierarchical
C. Mesh
D. Tree
True/FalseQuestions
27. Connectiondevicesaretheactualconnectingortransmissionmediumthatcarriesthemessage.
True False
28. Telephonelinesusecoaxialcables.
True False
29. Fiber-opticcabletransmitsdataaspulsesoflightthroughtinytubesofglass.
True False
30. Modulationisthenameoftheprocessofconvertingfromdigitaltoanalog.
True False
31. TCP/IPprotocolinvolvesidentifyingsending
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