WGUl D413l Objectivel Assessmentl (Latestl
2026/l 2027l Update)l Telecommunicationsl
andl Wirelessl Communicationsl Review|l
100%l Verifiedl Questionsl &l Answersl |l
Gradel A
Q:l Whatl isl onel typel ofl waveforml usedl tol transmitl electromagneticl signalsl inl
wirelessl media?
Radiol waves
Ultravioletl waves
Thermall waves
Gammal waves
Answer:
Radiol waves
Q:l Whatl isl thel wirelessl servicel thatl enablesl peoplel tol havel accessl tol mobilel internet?
Cellularl digitall packetl datal (CDPD)
Bluetooth
Ethernet
Wirelessl Applicationl Protocoll (WAP)
Answer:
Cellularl digitall packetl datal (CDPD)
,Q:l Whichl wavesl havel higherl frequenciesl thanl infraredl transmissionl frequencies?
Visiblel lightl waves
Microwaves
Radiol waves
Electromagneticl waves
Answer:
Visiblel lightl waves
Q:l Whichl typel ofl wavesl arel usedl inl Bluetoothl transmission?
Low-powerl radiol waves
High-powerl radiol waves
Low-powerl ultravioletl waves
High-powerl ultravioletl waves
Answer:
Low-powerl radiol waves
Q:l Whatl isl al sourcel ofl industriall noise?
Electricl motors
Lightning
Crosstalk
Electronl movement
Answer:
Electricl motors
,Q:l Whichl cablel realizesl noisel protectionl withl thel usel ofl foill shielding?
Al cablel transmittingl signalsl betweenl 15l andl 20l kHz
Al cablel transmittingl signalsl betweenl 10l andl 15l kHz
Al cablel transmittingl signalsl betweenl 5l andl 10l kHz
Al cablel transmittingl signalsl betweenl 0l andl 5l kHz
Answer:
Al cablel transmittingl signalsl betweenl 15l andl 20l kHz
Q:l Whatl isl onel advantagel ofl thel cyclicl redundancyl checkl (CRC)?
Itl detectsl al largel proportionl ofl possiblel errors.
Itl evaluatesl datal basedl onl 8-bitl encoding.
Itl usesl al smalll numberl ofl parityl bits.
Itl isl usefull asl anl authenticationl mechanism.
Answer:
Itl detectsl al largel proportionl ofl possiblel errors.
Q:l Howl arel stuttersl counteractedl tol improvel thel qualityl ofl Voicel overl Internetl
Protocoll (VoIP)?
Byl installingl jitterl buffers
Byl usingl analogl signall transmission
Byl installingl VPNl software
Byl usingl al higherl signall frequency
Answer:
Byl installingl jitterl buffers
, Q:l Whenl usingl al campusl network,l al collegel studentl consistentlyl noticesl slow-movingl
connectivityl inl thel afternoonl butl notl inl thel morning.
Whatl causesl thisl problem?
Therel isl greaterl networkl congestionl inl thel afternoon.
Powerl usel onl thel campusl isl greaterl inl thel afternoon.
Networkl securityl measuresl arel bolsteredl inl thel afternoon.
IPl addressesl arel reassignedl eachl dayl inl thel afternoon.
Answer:
Therel isl greaterl networkl congestionl inl thel afternoon.
Q:l Whichl wirelessl securityl featurel hidesl thel contentsl ofl networkl packetsl tol ensurel
datal canl bel transmittedl overl al wirelessl networkl safely?
Intrusionl detectionl system
Applicationl gateway
Authentication
Encryptionl key
Answer:
Encryptionl key
Q:l Whichl multiplexingl techniquel transmitsl eachl signall froml onel inputl sourcel vial al
singlel timel slotl throughl thel creationl ofl differentl slots?
Synchronousl time-divisionl multiplexing
Asynchronousl time-divisionl multiplexing
Integratedl Servicesl Digitall Networkl (ISDN)l multiplexing
Transmissionl Systeml 1l multiplexing
2026/l 2027l Update)l Telecommunicationsl
andl Wirelessl Communicationsl Review|l
100%l Verifiedl Questionsl &l Answersl |l
Gradel A
Q:l Whatl isl onel typel ofl waveforml usedl tol transmitl electromagneticl signalsl inl
wirelessl media?
Radiol waves
Ultravioletl waves
Thermall waves
Gammal waves
Answer:
Radiol waves
Q:l Whatl isl thel wirelessl servicel thatl enablesl peoplel tol havel accessl tol mobilel internet?
Cellularl digitall packetl datal (CDPD)
Bluetooth
Ethernet
Wirelessl Applicationl Protocoll (WAP)
Answer:
Cellularl digitall packetl datal (CDPD)
,Q:l Whichl wavesl havel higherl frequenciesl thanl infraredl transmissionl frequencies?
Visiblel lightl waves
Microwaves
Radiol waves
Electromagneticl waves
Answer:
Visiblel lightl waves
Q:l Whichl typel ofl wavesl arel usedl inl Bluetoothl transmission?
Low-powerl radiol waves
High-powerl radiol waves
Low-powerl ultravioletl waves
High-powerl ultravioletl waves
Answer:
Low-powerl radiol waves
Q:l Whatl isl al sourcel ofl industriall noise?
Electricl motors
Lightning
Crosstalk
Electronl movement
Answer:
Electricl motors
,Q:l Whichl cablel realizesl noisel protectionl withl thel usel ofl foill shielding?
Al cablel transmittingl signalsl betweenl 15l andl 20l kHz
Al cablel transmittingl signalsl betweenl 10l andl 15l kHz
Al cablel transmittingl signalsl betweenl 5l andl 10l kHz
Al cablel transmittingl signalsl betweenl 0l andl 5l kHz
Answer:
Al cablel transmittingl signalsl betweenl 15l andl 20l kHz
Q:l Whatl isl onel advantagel ofl thel cyclicl redundancyl checkl (CRC)?
Itl detectsl al largel proportionl ofl possiblel errors.
Itl evaluatesl datal basedl onl 8-bitl encoding.
Itl usesl al smalll numberl ofl parityl bits.
Itl isl usefull asl anl authenticationl mechanism.
Answer:
Itl detectsl al largel proportionl ofl possiblel errors.
Q:l Howl arel stuttersl counteractedl tol improvel thel qualityl ofl Voicel overl Internetl
Protocoll (VoIP)?
Byl installingl jitterl buffers
Byl usingl analogl signall transmission
Byl installingl VPNl software
Byl usingl al higherl signall frequency
Answer:
Byl installingl jitterl buffers
, Q:l Whenl usingl al campusl network,l al collegel studentl consistentlyl noticesl slow-movingl
connectivityl inl thel afternoonl butl notl inl thel morning.
Whatl causesl thisl problem?
Therel isl greaterl networkl congestionl inl thel afternoon.
Powerl usel onl thel campusl isl greaterl inl thel afternoon.
Networkl securityl measuresl arel bolsteredl inl thel afternoon.
IPl addressesl arel reassignedl eachl dayl inl thel afternoon.
Answer:
Therel isl greaterl networkl congestionl inl thel afternoon.
Q:l Whichl wirelessl securityl featurel hidesl thel contentsl ofl networkl packetsl tol ensurel
datal canl bel transmittedl overl al wirelessl networkl safely?
Intrusionl detectionl system
Applicationl gateway
Authentication
Encryptionl key
Answer:
Encryptionl key
Q:l Whichl multiplexingl techniquel transmitsl eachl signall froml onel inputl sourcel vial al
singlel timel slotl throughl thel creationl ofl differentl slots?
Synchronousl time-divisionl multiplexing
Asynchronousl time-divisionl multiplexing
Integratedl Servicesl Digitall Networkl (ISDN)l multiplexing
Transmissionl Systeml 1l multiplexing
