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Apr 08, 2018

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    Sample Questionsword

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    1. When was the first complete sentence ever transmitted by the

    telephone?

    a.1860

    b. 1876

    c. 1892

    d. 1905

    2. Who invented the first practical system for the electrical switching of

    calls installed in 1892?

    a. Bell

    b. Watson

    c. Edison

    d. Strowger

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    3. What part of the conventional telephone set the transmitter and

    receiver unit are located?

    a. Dial

    b. Base

    c. Keypad

    d. Handset

    4. The type of transmitter widely used in the conventional telephone

    set

    a. Carbon

    b. Ceramic

    c. Piezoelectric

    d. Electromagnetic

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    5. Who invented the first carbon type transmitter?

    a. Bell

    b. Watson

    c. Gray

    d. Edison

    6. The type of receiver widely used in the conventional telephone set

    a. Electromagnetic

    b. Ceramic

    c. Carbon

    d. Piezoelectric

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    7. How many unique tones are used for the 12-key dial-tone multi

    frequency keypad?

    a. 2

    b. 4

    c. 7

    d. 12

    8. In the telephone unit, what is produced when the balancing network

    in a hybrid circuit is intentionally unbalanced slightly so that the small

    amount of transmitted signal is fed to the receiver of the talking phone?

    a. Dial tone

    b. Side tone

    c. Echo

    d. Singing

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    9. The type of dialing possible for telephone set with rotary dial.

    a. Tone dialing

    b. Pulse dialing

    c. Loop dialing

    d. e&m dialing

    10. DTMF stands for

    a. Digital telephone multimode function

    b. Dual tone multifrequency

    c. Dialing time made faster

    d. Data transmission multiplex filter

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    11. The signal heard on the telephone line that indicates readiness of

    the central office in receiving address or telephone number

    a. Dial tone

    b. Ringing tone

    c. Busy tone

    d. Congestion tone

    12. The signal heard on the telephone line which indicates that the

    called subscriber sets is in use

    a. Dial tone

    b. Ringing tone

    c. Busy tone

    d. Congestion tone

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    13. Dial tone, busy tone and ring back tone are examples of _____ signal.

    a. Supervision

    b. Address

    c. Musical

    d. Digital

    14. Request for service from the telephone is detected at the Central

    Office as

    a. Dial pulses

    b. Ringing signalc. Flow of loop current

    d. Battery reversal

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    15. The maximum length for 1300-ohm signaling or loop resistance

    using AWG 26 wire with 133.9 ohms per kilometer

    a. 5.2 km

    b. 4.7 km

    c. 7.5 km

    d. 9.7 km

    16. With attenuation loss limits at 6 dB, what it the length of cable using

    gauge 26 with attenuation loss of 1.61 dB per kilometer?

    a. 1.3 km

    b. 2.5 km

    c. 3.7 km

    d. 4.9 km

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    17. The attenuation loss limit of the subscriber loop is set at 6dB. What

    is the maximum length if a 26H88 loading coil with an attenuation of

    0.80 dB per kilometer is added?

    a. 1.5 km

    b. 3.5 km

    c. 5.5 km

    d. 7.5 km

    18. The first number of the loaded cable designation 19H44 indicates

    a. Spacing

    b. Coil inductance

    c. Wire gauge

    d. Attenuation

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    19. The letter of the loaded cable designation 24B88 indicates

    a. Spacing

    b. Coil inductance

    c. Wire gauge

    d. Attenuation

    20. The last two digit of the loaded cable designation 22E66 indicates

    a. Spacing

    b. Coil inductance

    c. Wire gauge

    d. Attenuation

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    21. The Strowger or step-by-step system falls under what type of

    switching control system?

    a. Manual

    b. Progressive

    c. Common

    d. Automatic

    22. What type of control system Crossbar switches are operating?

    a. Manual

    b. Progressive

    c. Common

    d. Automatic

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    23. The kind of telephone system that require the incoming analog

    signals to be converted to PCM words before being switched

    a. Analog system

    b. Digital system

    c. Step-by-step

    d. Crossbar system

    24. A switching network capable of providing a path from every inlet

    link to every outlet link in the absence of traffic

    a. Concentration

    b. Blocking

    c. Full availability switch

    d. Crosspoint

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    25. The inability to interconnect two idle lines connected to a switching

    network due to all possible paths are in use

    a. Concentration

    b. Blocking

    c. Full availability

    d. Crosspoint

    26. Line finder switches are found in what kind of telephone system?

    a. Step-by-step

    b. Crossbarc. Digital exchange

    d. Mobile telephone system

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    27. In the telephone industry, BORSCHT functions are performed by

    a. Subscriber line interface

    b. Crosspoint matrix

    c. Switching network

    d. Connector switch

    28. BORSCHT stands for

    a. Battery, over-voltage protection, ringing, supervision,

    coding, hybrid and testing

    b. Battery, on-hook, regulator, surge protect, circuit, hybrid and testc. Name of a leading manufacturer of telephone system

    d. Acronym for the developers of computer

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    29. The location where all subscriber lines are terminated and

    switching equipment facility is installed

    a. Central office

    b. Toll office

    c. Gate way

    d. Tandem

    30. A series of numbers dialed from the telephone in order to use the

    telecom service such as direct distance dialing

    a. Zip code

    b. Access code

    c. Address

    d. Exchange code

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    31.The three-digit code used in long distance dialing that is assigned to

    toll center

    a. Zip code

    b. Area code

    c. Exchange code

    d. Country code

    32. The three digits following the area code

    a. Zip code

    b. Bar code

    c. Exchange code

    d. Country code

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    33. Generically refers to any switching system owner or leased by a

    business or organization to provide both internal switching function

    and access to the PSTN

    a. Private branch exchange

    b. Public telephone carrier

    c. Local exchange carrier

    d. Inter-exchange carrier

    34. The point where signals are conveyed from one telecommunication

    network of a telecom operator to another

    a. Point of interconnection

    b. Signal transfer point

    c. Originating point

    d. Point-to-point

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    35. A private line communications channel of the type provided by

    communication common carrier for linking two or more points

    together

    a. Party line

    b. Tie line

    c. DID line

    d. Trunk line

    36. The class of exchange with the primary function is to connect

    between central offices when a direct trunk is not available

    a. Local

    b. Gate way

    c. Toll

    d. Tandem

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    37. That part of central office or local exchange which refers to all

    cables and wires extending outward including supporting structures

    and associated apparatus connected to the subscriber telephone

    a. Outside plant

    b. Power plant

    c. Inside plant

    d. Tandem

    38. Trunk signaling within the operative voice-band spectrum

    a. In band

    b. Out of band

    c. Channel associated

    d. Common channel

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    39. Type of channel signaling where signal travels with the voice

    channel

    a. In band

    b. Out of band

    c. Channel associated

    d. Common channel

    40. Type of channel signaling where a completely independent channel

    carry signals of many traffic channels

    a. In band

    b. Out band

    c. Channel associated

    d. Common channel

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    41. Transmission term corresponding to E & M signals

    a. 2 wire

    b. 4 wire

    c. 8 wire

    d. 16 wire

    42. E & M stands for

    a. Ear and mouth

    b. Encode and match

    c. Electricity and magnetism

    d. Expander and multiplexer

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    43. E & M is for interoffice trunk while _____ is for subscriber line

    a. Loop

    b. 4 wire

    c. Tone

    d. Data

    44. It is the means of transferring line or network related control

    information between telephone and central office or between central

    office

    a. Signaling

    b. Dialing

    c. Switching

    d. Multiplexing

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    45. A common channel signaling system for use between stored

    program controlled exchanges, designed for use in digital environment

    a. Signaling system no. 4

    b. Signaling system no. 5

    c. Signaling system no. 6

    d. Signaling system no. 7

    46. To interconnect system of different characteristics by resolving

    their incompatibilities

    a. Boundary

    b. Interface

    c. Converter

    d. End office

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    47. Sampling theorem states that the rate of sampling must at least be

    _____ the highest frequency component

    a. Half

    b. Twice

    c. Equal

    d. Ten times

    48. Sampling theorem is also known as

    a. Shannon

    b. Nyquist

    c. Norton

    d. Thevenin

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    49. A process in which more than one signal at a time is translated over

    a signal link, route or channel

    a. Synchronization

    b. Multiplexing

    c. Concentration

    d. Encoding

    50. The modulation technique where signals are sampled periodically

    and each sample is quantized and transmitted as a digital binary code

    a. TDM

    b. PCM

    c. PAM

    d. PPM

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    51. What multiplexing technique is used in PCM?

    a. TDM

    b. PCM

    c. PAM

    d. PPM

    52. Geographic area in which telephone services, numbering assignments and

    rates are the same

    a. Exchange area

    b. City block

    c. Regional area

    d. Country

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    53. When a modulation signal is periodically sampled, a _____ wave is produced

    a. TDM

    b. PCM

    c. PAM

    d. PPM

    54. What is the sampling rate used in PCM

    a. 3.4 kHz

    b. 4.0 kHz

    c. 8.0 kHz

    d. 64 kHz

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    55. The process of assigning discrete value to a PAM signals in PCM

    a. Sampling

    b. Quantization

    c. Equalization

    d. Multiplexing

    56. Continuous one hour period which has the maximum average traffic intensity

    a. Busy hour

    b. Traffic quantity

    c. Grade of service

    d. Erlang

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    57. The aggregate engagement time or occupancy time of one or more traffic paths

    a. Busy hour

    b. Traffic quantity

    c. Grade of service

    d. Erlang

    58. A measure of the probability that a call offered to a group of trunks or circuits

    will fail to find idle circuit at the first attempt

    a. Busy hour

    b. Traffic quantity

    c. Grade of service

    d. Erlang

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    59. The consultative body with the primary purpose of promoting compatibility

    between communications practices and performance standards of various

    nations in the field of telephony and telegraphy

    a. CCITT

    b. CCIR

    c. FCC

    d. IEEE

    60. Using a cellular phone outside your home service area

    a. Long Distance Communications

    b. Roaming

    c. Global Communications

    d. Jamming

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    which is measured in kilohertz (kHz). What is the width of the channel used by

    most analog cellular phones?

    a. 50 kHz

    b. 60 kHz

    c. 40 kHz

    d. 30 kHz

    62. A digital technology that uses a low power signal spread across a wide

    bandwidth. With this technology, a phone call is assigned a code instead of a

    certain frequency. Using the identifying code and a low power signal, a large

    number of callers can use the same group of channels.

    a. Time Division Multiple Access

    b. Pulse Code Division Multiplexing

    c. Pulse Multiple Access

    d. Code Division Multiple Access

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    63. A central computer that connects a cellular phone call to the public telephone

    network. It controls the entire systems operation, including monitoring calls,

    billing and handoffs.

    a. Personal Communications Services

    b. Wide Area Network Computer

    c. Mobile Telephone Switching Office

    d. International Standards Organization

    64. What is the meaning of IS-54 which is the dual mode (analog and digital

    cellular standard in North America? In the analog mode, this conforms to the

    Advanced Mobile Phone Service.

    a. Interim Standard Number 54

    b. International Standard Number 54

    c. Integrated Systems Number 54

    d. Industry Standard Number 54

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    65. A phone that operates on both analog and digital networks.

    a. Dual system

    b. Coupled system

    c. Paired-mode system

    d. Dual-mode system

    66. The geographic area by a single low-power transmitter/receiver. It categorizes

    a cellular systems service area.

    a. Channel

    b. Service area

    c. Site

    d. Cell

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    67. Radio frequencies assigned in one channel in a cellular system are limited to

    boundaries of a signal cell because of their low power. The carrier is free to use

    the frequencies again in other cells in the system without causing interference.

    What do you call this method?

    a. Frequency assignment

    b. Channel utilization

    c. Frequency reuse

    d. Optimum frequency assignment

    68. A loosely defined future universal telecommunications service that will allow

    anytime, anywhere voice and data communication with personal

    communication devices.

    a. Personal Communications System

    b. Universal Telephone Service

    c. Personal Handy Phone

    d. Nationwide Communication Services

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    69. A special fee that local telephone companies are allowed to charge all

    telephone customers for the right to connect with the local phone network.

    a. Airtime fee

    b. Access fee

    c. Connection fee

    d. Mandatory fee

    70. A means of increasing the capacity of a cellular system by subdividing or

    splitting cells into two or more smaller cells.

    a. Spectrum allocation

    b. Cell allocation

    c. Channel splitting

    d. Cell splitting

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    71. A process that provides security for wireless information. Information is

    encoded so that it can be ready by a device with a matching decoding

    procedure.

    a. Wireless decoder

    b. Cellular decoder

    c. Encryption

    d. Decoder

    72. An important safety feature thats included with most of todays car phones. It

    permits the driver to use his cellular car phone without lifting or holding the

    handset to his ear.

    a. Hands-free

    b. Hands-off

    c. Handy phone

    d. Safet hone

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    73. A cellular phone feature that automatically blows the cars horn if a call comes

    in, alerting the recipient standing nearby.

    a. Alert mode

    b. Warning horn

    c. Call horn

    d. Alert mode

    74. An important feature of a cellular phone subscribing of a voice mail which

    indicates a light or other indicator announcing that a phone call came in.

    a. Alert mode

    b. Call alert

    c. Message alert

    d. Voice mail alert

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    75. A sophisticated service provided by a cellular carrier that automatically

    transfers an incoming cellular call to another phone number if the cellular

    subscriber is unable to answer.

    a. Call forwarding

    b. Call transfer

    c. Call waiting

    d. No-answer transfer

    76. The periods of time during which the carriers offer discounted airtime charges,

    usually available after 10 p.m. and before 6 a.m., on weekends and holidays.

    a. Night time

    b. Lean time

    c. Off-peak

    d. peak

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    77. The standard cellular antenna for a car which prefers to the spring-like section

    in the lower third of the antenna known as a phasing coil.

    a. Pigtail antenna

    b. Omnidirectional antenna

    c. Whip antenna

    d. Flexible antenna

    78. The type of cellular phone which is installed in a car or truck. This unit is

    attached to the vehicle, draws its power from the vehicles battery and has an

    external antenna.

    a. Mobile or car phone

    b. Portable

    c. Electronic phone

    d. Enhanced cellular phone

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    79. A protected database that holds a copy of the secret key stored in each

    subscribers SIM card

    a. HLR

    b. VLR

    c. AuC

    d. EIR

    80. The time which a cellular subscriber uses a carriers service charged per unit

    time of call

    a. Talk time

    b. Air time

    c. Stand-by time

    d. Hand off time

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    81. The Subscribers Identity Module (SIM) Card for GSM contains a/n _____

    number that identifies the user to the network along with other user and

    security information.

    a. IMEI

    b. IMSI

    c. ESN

    d. MIN

    82. The modulation technique in cellular communications wherein each message

    is assigned with a frequency, which is unique to a particular cell.

    a. NBFM

    b. NBDT

    c. PCM

    d. Modem

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    83. A channel used for the transmission of supervisory information from a cell site

    to a mobile station or vice versa.

    a. Speech

    b. Control

    c. Common

    d. Voice

    84. The database for good and known IMEIs

    a. White

    b. Black

    c. Grey

    d. red

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    85. A means of increasing the capacity of a cellular system by subdividing cells into

    two or more smaller cells.

    a. Spectrum allocation

    b. Cell allocation

    c. Channel splitting

    d. Cell splitting

    86. A database used for management of mobile subscriber.

    a. HLR

    b. VLR

    c. MSC

    d. EIR

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    87. The followingarethesupervisoryaudio

    tonesusedin cellularphonesexcept

    5970 Hz

    6000 Hz

    6030 Hz

    3925 Hz

    88. A specialsignaltonethatistransmittedto

    the cellsiteto freethevoice channelwhen

    themobileterminatesa cell.

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    89. In the CDMA Cellular technology, the signal meant for a given user is tagged

    with a distinctive _____ pattern that only the users receiver can recognize.

    a. PIN Code

    b. PN Code

    c. SIM

    d. IMSI

    90. In a Cellular network, if you split a cell originally containing a maximum of 20

    channels into two cells, the theoretical total channel capacity is

    a. 10

    b. 20

    c. 30

    d. 40

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    91. In wireless communications, a radio channel consists of _____ frequencies

    within the RF spectrum, which allow a cell site and a wireless phone to

    transmit and receive signals simultaneously.

    a. 2

    b. 3

    c. 4

    d. 5

    92. A GSM security measure which is designed to prevent eavesdropping of user

    data on the radio path

    a. IMSI

    b. TMSI

    c. IMEI

    d. MSRN

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    93. The uplink frequency range for GSM900

    a. 935 960 MHZ

    b. 890 915 MHz

    c. 935 960 MHz

    d. 890 915 MHz

    94. The geographic area served a single-power transmitter/receiver. It categorizes

    a cellular systems service area.

    a. Channel

    b. Service area

    c. Site

    d. cell

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    95. Best described as an amplifier used in radio telephony.

    a. Class A

    b. Class B

    c. Class C

    d. Magnifier

    96. This is the Nordic analog mobile radio telephone system originally used in

    Scandinavia.

    a. NMT

    b. GSM

    c. PCN

    d. PCS

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    97. It is a one-way wireless messaging which allows continuous accessibility to

    someone away from the wired communications network.

    a. Paging

    b. Trunked Radio

    c. Cellular Telephony

    d. Text Messaging

    98. The following are parts of the Trunked Radio System except

    a. Channels

    b. Central controller

    c. Antenna and tower

    d. 48 volts power supply

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    99. It is a one-way wireless messaging which allows continuous accessibility to

    someone away from the wired communications network.

    a. Paging

    b. Trunked Radio

    c. Cellular Telephony

    d. Text Messaging

    100. The following are parts of the Trunked Radio System except

    a. Channels

    b. Central controller

    c. Antenna and tower

    d. 48 volts power supply