JJ

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1.

1. When was the first complete sentence ever transmitted by When was the first complete sentence ever transmitted by thethetelephonetelephone?? a. a. 18601860 b. b. 18761876 c. c. 18921892 d. d. 19051905 2.

2. Who invented the first practical system for the electrical switchin of calls installed in 1892?Who invented the first practical system for the electrical switchin of calls installed in 1892? a. a. !ell!ell b. b. WatsonWatson c. c. "dison"dison d. d. #trower#trower $.

$. What part of the conventional telephone set the transmitter and receiver %nit What part of the conventional telephone set the transmitter and receiver %nit are located?are located? a. a. &ial&ial b. b. !ase!ase c. c. 'eypad'eypad d. d. (andset(andset ).

). *he type of transmitter widely %sed in *he type of transmitter widely %sed in the conventional telephone setthe conventional telephone set a. a. +arbon+arbon b. b. +eramic+eramic c. c. ,ie-oelectric,ie-oelectric d. d. "lectromanetic"lectromanetic 5.

5. Who invented the first carbon type transmitter?Who invented the first carbon type transmitter? a. a. !ell!ell b. b. WatsonWatson c. c. rayray d. d. "dison"dison 6.

6. *he type of receiver widely %sed *he type of receiver widely %sed in the conventional telephone setin the conventional telephone set a. a. "lectromanetic"lectromanetic b. b. +eramic+eramic c. c. +arbon+arbon d. d. ,ie-oelectric,ie-oelectric 7.

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a. a. 22 b. b. )) c. c. 77 d. d. 1212 8.

8. n the telephone %nit3 what is prod%ced when the balancin networ in n the telephone %nit3 what is prod%ced when the balancin networ in a hybrid circ%it is a hybrid circ%it is intentionally %nbalanced slihtly so thatintentionally %nbalanced slihtly so that the small amo%nt of transmitted sinal is

the small amo%nt of transmitted sinal is fed to the receiver of the talin fed to the receiver of the talin phone?phone? a.

a. &ial tone&ial tone b.

b. #ide tone#ide tone c.

c. "cho"cho d.

d. #inin#inin

9.

9. *he type of dialin possible for *he type of dialin possible for telephone set with rotary dial.telephone set with rotary dial. a.

a. *one dialin*one dialin b.

b. ,%lse dialin,%lse dialin c.

c. 4oop dialin4oop dialin d.

d. em dialinem dialin

10.

10. &* stands for&* stands for a.

a. &iital telephone m%ltimode f%nction&iital telephone m%ltimode f%nction b.

b. &%al tone m%ltifre/%ency&%al tone m%ltifre/%ency c.

c. &ialin time made faster&ialin time made faster d.

d. &ata transmission m%ltiple filter&ata transmission m%ltiple filter

11.

11. *he sinal heard on the telephone line that indicates readiness of *he sinal heard on the telephone line that indicates readiness of the central office in receivin address or the central office in receivin address or telephone n%mbertelephone n%mber a.

b. inin toneinin tone c.

c. !%sy tone!%sy tone d.

d. +onestion tone+onestion tone

12.

12. *he sinal heard on the telephone line which indicates *he sinal heard on the telephone line which indicates that the calledthat the called s%bscribers%bscriber sets is in %se sets is in %se a.

b. inin toneinin tone c.

c. !%sy tone!%sy tone d.

d. +onestion tone+onestion tone

1$.

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a. #%pervision b. ;ddress c. %sical d. &iital

1). e/%est for service from the telephone is detected at the +entral <ffice as a. &ial p%lses

b. inin sinal c. low of loop c%rrent d. !attery reversal

15. *he maim%m lenth for 1$00ohm sinalin or loop resistance %sin ;W 26 wire with 1$$.9 ohms per ilometer a. 5.2 m

b. ).7 m c. 7.5 m d. 9.7 m

16. With atten%ation loss limits at 6 d!3 what it the lenth of cable %sin a%e 26 with atten%ation loss of 1.61 d! per ilometer? a. 1.$ m

b. 2.5 m c. $.7 m d. ).9 m

17. *he atten%ation loss limit of the s%bscriber loop is set at 6d!. What is the maim%m lenth if a 26(88 loadin coil with an atten%ation of 0.80 d! per ilometer is added?

a. 1.5 m b. $.5 m c. 5.5 m d. 7.5 m

18. *he first n%mber of the loaded cable desination 19()) indicates a. #pacin

b. +oil ind%ctance c. Wire a%e d. ;tten%ation

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a. #pacin b. +oil ind%ctance c. Wire a%e d. ;tten%ation

20. *he last two diit of the loaded cable desination 22"66 indicates a. #pacin

b. +oil ind%ctance c. Wire a%e d. ;tten%ation

21. *he #trower or stepbystep system falls %nder what type of switchin control system? a. an%al

b. ,roressive

c. +ommon

d. ;%tomatic

22. What type of control system +rossbar switches are operatin? a. an%al

b. ,roressive

c. +ommon

d. ;%tomatic

2$. *he ind of telephone system that re/%ire the incomin analo sinals to be converted to ,+ words before bein switched a. ;nalo system

b. &iital system c. #tepbystep d. +rossbar system

2). ; switchin networ capable of providin a path from every inlet lin to every o%tlet lin in the absence of traffic a. +oncentration

b. !locin

c. %ll availability switch d. +rosspoint

25. *he inability to interconnect two idle lines connected to a switchin networ d%e to all possible paths are in %se a. +oncentration

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b. !locin c. %ll availability d. +rosspoint

26. 4ine finder switches are fo%nd in what i nd of telephone system? a. #tepbystep

b. +rossbar c. &iital echane

d. obile telephone system

27. n the telephone ind%stry3 !<#+(* f%nctions are performed by a. #%bscriber line interface

b. +rosspoint matri c. #witchin networ d. +onnector switch

28. !<#+(* stands for

a. !attery3 overvoltae protection3 rinin3 s%pervision3 codin3 hybrid and testin b. !attery3 onhoo3 re%lator3 s%re protect3 circ%it3 hybrid and test

c. =ame of a leadin man%fact%rer of telephone system d. ;cronym for the developers of comp%ter

29. *he location where all s%bscriber lines are terminated and switchin e/%ipment facility is installed a. +entral office

b. *oll office c. ate way d. *andem

$0. ; series of n%mbers dialed from the telephone in order to %se the telecom service s%ch as direct distance dialin a. >ip code

b. ;ccess code c. ;ddress d. "chane code

$1. *he threediit code %sed in lon distance dialin that is assined to toll center a. >ip code

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c. "chane code d. +o%ntry code

$2. *he three diits followin the area code a. >ip code

b. !ar code c. "chane code d. +o%ntry code

$$. enerically refers to any switchin system owner or leased by a b%siness or orani-ation to provide both internal switchin f%nction and access to the ,#*=

a. ,rivate branch echane b. ,%blic telephone carrier c. 4ocal echane carrier d. nterechane carrier

$). *he point where sinals are conveyed from one telecomm%nication networ of a telecom operator to another a. ,oint of interconnection

b. #inal transfer point c. <riinatin point d. ,ointtopoint

$5. ; private line comm%nications channel of the type provided by comm%nication common carrier for li nin two or more points toether

a. ,arty line b. *ie line c. && line d. *r%n line

$6. *he class of echane with the primary f%nction is to connect between central offices when a direct tr%n is not available a. 4ocal

b. ate way c. *oll d. *andem

$7. *hat part of central office or local echane which refers to all cables and wires etendin o%tward incl%din s%pportin str%ct%res and associated apparat%s connected to the s%bscriber telephone

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a. <%tside plant b. ,ower plant c. nside plant d. *andem

$8. *r%n sinalin within the operative voiceband spectr%m a. n band

b. <%t of band

c. +hannel associated d. +ommon channel

$9. *ype of channel sinalin where sinal travels with the voice channel a. n band

b. <%t of band

)0. *ype of channel sinalin where a completely independent channel carry sinals of many traffic channels a. n band

b. <%t band

)1. *ransmission term correspondin to "   sinals a. 2 wire

b. ) wire c. 8 wire d. 16 wire

)2. "   stands for a. "ar and mo%th b. "ncode and match c. "lectricity and manetism d. "pander and m%ltipleer

)$. "   is for interoffice tr%n while ::::: is for s%bscriber line a. 4oop

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b. ) wire c. *one d. &ata

)). t is the means of transferrin l ine or networ related control information between telephone and central office or between central office

a. #inalin b. &ialin c. #witchin d. %ltiplein

)5. ; common channel sinalin system for %se between stored proram controlled echanes3 desined for %se in diital environment

a. #inalin system no. ) b. #inalin system no. 5 c. #inalin system no. 6 d. #inalin system no. 7

)6. *o interconnect system of different characteristics by resolvin their incompatibilities a. !o%ndary

b. nterface c. +onverter d. "nd office

)7. #amplin theorem states that the rate of samplin m%st at least be ::::: the hihest fre/%ency component a. (alf

b. *wice c. "/%al d. *en times

)8. #amplin theorem is also nown as a. #hannon

b. =y/%ist c. =orton d. *hevenin

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a. #ynchroni-ation b. %ltiplein c. +oncentration d. "ncodin

50. *he mod%lation techni/%e where sinals are sampled periodically and each sample is /%anti-ed and transmitted as a diital binary code

a. *&

b. ,+

c. ,;

d. ,,

51. What m%ltiplein techni/%e is %sed in , +? a. *&

b. ,+

c. ,;

d. ,,

52. eoraphic area in which telephone services3 n%mberin assinments and rates are the same a. "chane area

b. +ity bloc c. eional area d. +o%ntry

5$. When a mod%lation sinal is periodically sampled3 a ::::: wave is prod%ced a. *&

b. ,+

c. ,;

d. ,,

5). What is the samplin rate %sed in ,+ a. $.)

(-b. ).0 (-c. 8.0 (-d. 6)

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a. #amplin b. %anti-ation c. "/%ali-ation d. %ltiplein

56. +ontin%o%s one ho%r period which has the maim%m averae traffic intensity a. !%sy ho%r

b. *raffic /%antity c. rade of service d. "rlan

57. *he areate enaement time or occ%pancy time of one or more traffic paths a. !%sy ho%r

58. ; meas%re of the probability that a call offered to a ro%p of tr%ns or circ%its will fail to find idle circ%it at the first attempt a. !%sy ho%r

59. *he cons%ltative body with the primary p%rpose of promotin compatibility between comm%nications practices and performance standards of vario%s nations in the field of telephony and teleraphy

a. ++**

b. ++

c. ++

d. """

60. @sin a cell%lar phone o%tside yo%r home service area a. 4on &istance +omm%nications

b. oamin

c. lobal +omm%nications d. Aammin

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a. ;dvanced obile ,hone #ervice b. ;%tomatic obile ,hone #ystem c. ;nalo obile ,assband #ystem d. ;mplit%de iin ,hone #tandard

62. *he time spent on a cell%lar phone which is %s%ally billed to the s%bscriber on a per min%te system.

a. _{*ime division system}

b. _;irtime

c. _&%ration

d. _nterval

6$. +hannel is nown as the width of the spectr%m band taen %p by a radio sinal which is meas%red in ilohert- B(-C. What is the width of the channel %sed by most analo cell%lar phones?

a. ₅₀

(-b. ₆₀

(-c. ₎₀

(-d. _$0

(-6). ; diital technoloy that %ses a low power sinal spread across a wide bandwidth. With this technoloy3 a phone call is assined a code instead of a certain fre/%ency. @sin the identifyin code and a l ow power sinal3 a lare n%mber of callers can %se the same ro%p of channels.

a. *ime &ivision %ltiple ;ccess b. ,%lse +ode &ivision %ltiplein c. ,%lse %ltiple ;ccess

d. +ode &ivision %ltiple ;ccess

65. ; central comp%ter that connects a cell%lar phone call to the p%blic telephone networ. t controls the entire systemDs operation3 incl%din monitorin calls3 billin and handoffs.

a. ,ersonal +omm%nications #ervices b. Wide ;rea =etwor +omp%ter c. obile *elephone #witchin <ffice

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d. nternational #tandards <rani-ation

66. What is the meanin of #5) which is the d%al mode Banalo and diital cell%lar standard in =orth ;merica? n the analo mode3 this conforms to the ;dvanced obile ,hone #ervice.

a. _{nterim #tandard =%mber 5)}

b. _{nternational #tandard =%mber 5)}

c. _{nterated #ystems =%mber 5)}

d. _{nd%stry #tandard =%mber 5)}

67. ; phone that operates on both analo and diital networs.

a. _{&%al system}

b. _{+o%pled system}

c. _{,airedmode system}

d. _{&%almode system}

68. *he eoraphic area by a sinle lowpower transmitterEreceiver. t cateori-es a cell%lar systemDs service area.

a. _+hannel

b. _{#ervice area}

c. _#ite

d. _+ell

69. adio fre/%encies assined in one channel in a cell%lar system are limited to bo%ndaries of a sinal cell beca%se of their low power. *he carrier is free to %se the fre/%encies aain in other cells in the system witho%t ca%sin interference. What do yo% call this method?

a. _{re/%ency assinment}

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c. _{re/%ency re%se}

d. _{<ptim%m fre/%ency assinment}

70. ; loosely defined f%t%re %niversal telecomm%nications service that will allow Fanytime3 anywhereG voice and data comm%nication with personal comm%nication devices.

a. _{,ersonal +omm%nications #ystem}

b. _{@niversal *elephone #ervice}

c. _{,ersonal (andy ,hone}

d. _{=ationwide +omm%nication #ervices}

71. ; special fee that local telephone companies are allowed to chare all telephone c%stomers for the riht to connect with the l ocal phone networ.

a. _{;irtime fee}

b. _{;ccess fee}

c. _{+onnection fee}

d. _{andatory fee}

72. ; means of increasin the capacity of a cell%lar system by s%bdividin or splittin cells into two or more smaller cells.

a. _{#pectr%m allocation}

b. _{+ell allocation}

c. _{+hannel splittin}

d. _{+ell splittin}

7$. ; process that provides sec%rity for wireless information. nformation is encoded so that it can be ready by a device with a matchin decodin proced%re.

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b. _{+ell%lar decoder}

c. _"ncryption

d. _&ecoder

7). ;n important safety feat%re thatDs incl%ded with most of todayDs car phones. t permits the driver to %se his cell%lar car phone witho%t liftin or holdin the handset to his ear.

a. _(andsfree

b. _(andsoff

c. _{(andy phone}

d. _{#afety phone}

75. ; cell%lar phone feat%re that a%tomatically blows the carDs horn if a call comes in3 alertin the recipient standin nearby.

a. _{;lert mode}

b. _{Warnin horn}

c. _{+all horn}

d. _{;lert mode}

76. ;n important feat%re of a cell%lar phone s%bscribin of a voice mail which indicates a liht or other indicator anno%ncin that a phone call came in.

a. _{;lert mode}

b. _{+all alert}

c. _{essae alert}

d. _{Hoice mail alert}

77. ; sophisticated service provided by a cell%lar carrier that a%tomatically transfers an incomin cell%lar call to another phone n%mber if the cell%lar s%bscriber i s %nable to answer.

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a. _{+all forwardin}

b. _{+all transfer}

c. _{+all waitin}

d. _{=oanswer transfer}

78. *he periods of time d%rin which the carriers offer disco%nted airtime chares3 %s%ally available after 10 p.m. and before 6 a.m.3 on weeends and holidays.

a. _{=iht time}

b. _{4ean time}

c. _<ffpea

d. _pea

79. *he standard cell%lar antenna for a car which prefers to the sprinlie section in the lower third of the antenna nown as a phasin coil.

a. _{,itail antenna}

b. _{<mnidirectional antenna}

c. _{Whip antenna}

d. _{leible antenna}

80. *he type of cell%lar phone which is installed in a car or tr%c. *his %nit is attached to the vehicle3 draws its power from the vehicleDs battery and has an eternal antenna.

a. _{obile or car phone}

b. _,ortable

c. _{"lectronic phone}

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81. ; protected database that holds a copy of the secret ey stored in each s%bscriberDs # card

a. (4

b. H4

c. ;%+ d. "

82. *he time which a cell%lar s%bscriber %ses a carrierDs service chared per %nit time of call

a. _{*al time}

b. _{;ir time}

c. _{#tandby time}

d. _{(and off time}

8$. *he #%bscriberDs dentity od%le B#C +ard for # contains aEn ::::: n%mber that identifies the %ser to the networ alon with other %ser and sec%rity information.

a. _"

b. _#

c. _"#=

d. _=

8). *he mod%lation techni/%e in cell%lar comm%nications wherein each messae is assined with a fre/%ency3 which is %ni/%e to a partic%lar cell.

a. =!

b. =!&*

c. ,+

d. odem

85. ; channel %sed for the transmission of s%pervisory information from a c ell site to a mobile station or vice versa.

a. _#peech

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c. _+ommon

d. _Hoice

86. *he database for ood and nown "Ds a. White

b. !lac c. rey d. red

87. ; means of increasin the capacity of a cell%lar system by s%bdividin cells into two or more smaller cells.

a. _{#pectr%m allocation}

b. _{+ell allocation}

c. _{+hannel splittin}

d. _{+ell splittin}

88. ; database %sed for manaement of mobile s%bscriber.

a. _(4

b. _H4

c. _#+

d. _"

89. *he followin are the s%pervisory a%dio tones %sed i n cell%lar phones ecept a. 5970

(-b. 6000 (-c. 60$0 (-d. $925

(-90. ; special sinal tone that is transmitted to the cell site to free the voice channel when the mobile terminates a cell.

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'(-b. ₂₀

'(-c. _$0

'(-d. ₂₅

'(-91. n the +&; +ell%lar technoloy3 the sinal meant for a iven %ser is taed with a distinctive ::::: pattern that only the %serDs receiver can reconi-e.

a. _{,= +ode}

b. _{,= +ode}

c. _#

d. _#

92. n a +ell%lar networ3 if yo% split a cell oriinally containin a maim%m of 20 channels into two cells3 the theoretical total channel capacity is

a. ₁₀

b. ₂₀

c. _$0

d. ₎₀

9$. n wireless comm%nications3 a radio channel consists of ::::: fre/%encies within the  spectr%m3 which allow a cell site and a wireless phone to transmit and receive sinals sim%ltaneo%sly.

a. ₂

b. _$

c. ₎

d. ₅

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a. _#

b. _*#

c. _"

d. _#=

95. *he %plin fre/%ency rane for #900

a. _{9$5 I 960 (>}

b. _{890 I 915}

(-c. _{9$5 I 960}

(-d. _{890 I 915}

(-96. *he eoraphic area served a sinlepower transmitterEreceiver. t cateori-es a cell%lar systemDs service area.

a. _+hannel

b. _{#ervice area}

c. _#ite

d. _cell

97. !est described as an amplifier %sed in radio telephony.

a. _{+lass ;}

b. _{+lass !}

c. _{+lass +}

d. _{anifier}

98. *his is the =ordic analo mobile radio telephone system oriinally %sed in #candinavia.

a. =*

(20)

c. ,+=

d. ,+#

99. t is a oneway wireless messain which allows contin%o%s accessibility to someone away from the wired comm%nications networ.

a. ,ain

b. *r%ned adio c. +ell%lar *elephony d. *et essain

100. *he followin are parts of the *r%ned adio #ystem ecept

a. _+hannels

b. _{+entral controller}

c. _{;ntenna and tower}