8/6/2019 Sample Questions Word
1/51
Sample Questionsword
8/6/2019 Sample Questions Word
2/51
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
8/6/2019 Sample Questions Word
3/51
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
8/6/2019 Sample Questions Word
4/51
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
8/6/2019 Sample Questions Word
5/51
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
8/6/2019 Sample Questions Word
6/51
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
8/6/2019 Sample Questions Word
7/51
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
8/6/2019 Sample Questions Word
8/51
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
8/6/2019 Sample Questions Word
9/51
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
8/6/2019 Sample Questions Word
10/51
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
8/6/2019 Sample Questions Word
11/51
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
8/6/2019 Sample Questions Word
12/51
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
8/6/2019 Sample Questions Word
13/51
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
8/6/2019 Sample Questions Word
14/51
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
8/6/2019 Sample Questions Word
15/51
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
8/6/2019 Sample Questions Word
16/51
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
8/6/2019 Sample Questions Word
17/51
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
8/6/2019 Sample Questions Word
18/51
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
8/6/2019 Sample Questions Word
19/51
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
8/6/2019 Sample Questions Word
20/51
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
8/6/2019 Sample Questions Word
21/51
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
8/6/2019 Sample Questions Word
22/51
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
8/6/2019 Sample Questions Word
23/51
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
8/6/2019 Sample Questions Word
24/51
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
8/6/2019 Sample Questions Word
25/51
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
8/6/2019 Sample Questions Word
26/51
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
8/6/2019 Sample Questions Word
27/51
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
8/6/2019 Sample Questions Word
28/51
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
8/6/2019 Sample Questions Word
29/51
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
8/6/2019 Sample Questions Word
30/51
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
8/6/2019 Sample Questions Word
31/51
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
8/6/2019 Sample Questions Word
32/51
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
8/6/2019 Sample Questions Word
33/51
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
8/6/2019 Sample Questions Word
34/51
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
8/6/2019 Sample Questions Word
35/51
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
8/6/2019 Sample Questions Word
36/51
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
8/6/2019 Sample Questions Word
37/51
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
8/6/2019 Sample Questions Word
38/51
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
8/6/2019 Sample Questions Word
39/51
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
8/6/2019 Sample Questions Word
40/51
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
8/6/2019 Sample Questions Word
41/51
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
8/6/2019 Sample Questions Word
42/51
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
8/6/2019 Sample Questions Word
43/51
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
8/6/2019 Sample Questions Word
44/51
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
8/6/2019 Sample Questions Word
45/51
87. The followingarethesupervisoryaudio
tonesusedin cellularphonesexcept
5970 Hz
6000 Hz
6030 Hz
3925 Hz
88. A specialsignaltonethatistransmittedto
the cellsiteto freethevoice channelwhen
themobileterminatesa cell.
8/6/2019 Sample Questions Word
46/51
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
8/6/2019 Sample Questions Word
47/51
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
8/6/2019 Sample Questions Word
48/51
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
8/6/2019 Sample Questions Word
49/51
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
8/6/2019 Sample Questions Word
50/51
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
8/6/2019 Sample Questions Word
51/51
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