Online Questions and Answers Topic Outline
- MCQs in Mobile Communications
- MCQs in Cellular Communication
- MCQs in Trunk Radio
- MCQs in Radio Paging System
- MCQs in Facsimile
- MCQs in Telephone Set
- MCQs in Signaling
- MCQs in Transmission Considerations in long distance network
- MCQs in Insertion Loss
- MCQs in VF Repeaters
- MCQs in Traffic Calculations
- MCQs in Reference Equivalent and Standards
- MCQs in Telephone Networks
- MCQs in Billing
- MCQs in Network Hierarchy and Class type
- MCQs in Connection and Performance of Wire and Wireless Communications
MCQs in Wire and Wireless Communications System Series
Following is the list of multiple choice questions in this brand new series:
Continue Practice Exam Test Questions Part III of the Series
101. In FM fax, the frequencies for black and white are ______ respectively.
- A. 1500 and 2300 Hz
- B. 2300 and 1500 Hz
- C. 1300 and 2400 Hz
- D. 1070 and 1270 Hz
102. Which resolution produces the best quality fax?
- A. 96 lines per inch
- B. 150 lines per inch
- C. 200 lines per inch
- D. 400 lines per inch
103. Group 2 fax uses which modulation?
- A. SSB
- B. FSK
- C. Vestigial sideband AM
- D. PSK
104. The most widely used fax standard is
- A. Group 1
- B. Group 2
- C. Group 3
- D. Group 4
105. Group 3 fax uses which modulation?
- A. QAM
- B. ASK
- C. PSK
- D. GFSK
106. Block calls held condition specified the held probability at a time period equal to an average holding time.
- A. Erlang B
- B. Erlang C
- C. Erlang D
- D. Poisson
107. What is an Echo?
- A. A signal of the same amplitude but 180 degrees out of phase from the original signal and mixed with the original signal at the transmitter to produce a more intelligible output signal
- B. A wave which has been reflected or otherwise returned with the sufficient magnitude and delay for it to be perceptible in some manner as a wave distinct from that directly transmitted.
- C. The signal having a higher frequency than the original and transmitted back to earth by a passive satellite.
- D. A reflected signal.
108. What is the system used by Personal Communication Network (PCN)?
- A. TACS
- B. Modified GSM
- C. AMPS
- D. CDMA
109. Termination refers to
- A. Cutting both ends of a conductor
- B. Disconnecting a line from a transmitter
- C. Looking back impedance of a line with no load
- D. Load connected to the output end of a transmission line
110. The multiple access used by Digital European Cordless Telephone (DECT)
- A. CDMA
- B. FDMA
- C. TDMA
- D. CDMA/FDMA
111. Blocked calls delay condition specified delay probability
- A. Erlang B
- B. Erlang C
- C. Erlang D
- D. Poisson
112. Status information provided by telephone signaling.
- A. Busy tone, dial tone and ringing
- B. Congestion and call charge data
- C. All of the above
- D. None of the above
113. The modulation technique used by DECT.
- A. GFSK
- B. ASK
- C. QAM
- D. PSK
114. What is a four-wire circuit?
- A. Is used between serving central offices for long-distance connections, with one pair being used for each direction of transmission.
- B. Is a circuit with three output terminals and one input terminal
- C. Is an oscillator that produces four different frequencies simultaneously
- D. A circuit consisting of four transmission lines.
115. Cellular CDMA system uses what modulation method?
- A. GFSK
- B. ASK
- C. QAM
- D. BPSK
116. PABX means
- A. Private All-purpose Broadcasting Exchange
- B. Private Automatic Branch Exchange
- C. Public Access Bi-directional Exchange
- D. Public Automatic Branch Exchange
117. What is the voted cellular digital standard at TIA?
- A. Digital AMPS
- B. GSM
- C. CDMA
- D. TACS
118. What is the number of channels for Band A and for Band B in Digital AMPS
- A. 832
- B. 416
- C. 666
- D. 888
119. The mobile-to-base frequency assignment for GSM system is
- A. 890-915 MHz
- B. 935-960 MHz
- C. 870-890 MHz
- D. 825-845 MHz
120. The range (in miles) of a cellular CDMA system.
- A. 13
- B. 30
- C. 45
- D. 20
121. In a cellular system, ________ is used to measure the spectrum efficiency.
- A. Radio efficiency
- B. Diversity
- C. Frequency reuse
- D. Radio capacity
122. Which of the following echo is completely out of control?
- A. Worst echo
- B. Reverberation
- C. Singing
- D. Feedback
123. Which of the following devices increase the battery voltage on a loop and extends its signaling range?
- A. Loop extender
- B. VF repeater
- C. VF amplifier
- D. All of these
124. Under ordinary circumstances, the CCITT recommends that the number of circuits in tandem must not exceed
- A. 9
- B. 10
- C. 11
- D. 12
125. What is the system capacity of AMPS?
- A. 30,000
- B. 60,000
- C. 100,000
- D. 120,000
126. NAM means
- A. Non Alternable Memory
- B. Numeric Allocation Module
- C. Numeric Assignment Module
- D. Numeric Access Module
127. A mobile telephone service using trunked channels but not cellular nature
- A. IMTS
- B. MTSO
- C. IMSI
- D. IMEI
128. The GSM cellular radio system uses GMSK in a 200-kHz, with a channel data rate of 270.833 kbps. Calculate the frequency shift between mark and space in kHz?
- A. 135.4165
- B. 153.6514
- C. 315.4651
- D. 513.1654
129. A cellular system is capable of coping with a handoffs once every 2 minutes. What is the maximum cell radius if the system must be capable of working with cars traveling at highway speed of 120 km/hr?
- A. 3 km
- B. 1 km
- C. 4 km
- D. 6 km
130. Radio communication operation service between mobile and land stations or between mobile stations.
- A. land mobile
- B. land mobile satellite service
- C. mobile service
- D. maritime mobile service
131. A multiple access technique used in GSM cellular system.
- A. FDMA
- B. CDMA
- C. TDMA
- D. TACS
132. This is the Nordic analog mobile radio telephone system originally used in Scandinavia
- A. NMT
- B. GSM
- C. PCN
- D. PCS
133. The combination of the mobile cellular phone and the cell-site radio equipment is known as
- A. forward link
- B. base transceiver station
- C. air interface
- D. base station controller
134. The duplex frequency of GSM
- A. 40 MHz
- B. 80 MHz
- C. 120 MHz
- D. 30 MHz
135. The channel separation of GSM channel
- A. 270 kHz
- B. 200 kHz
- C. 120 kHz
- D. 60 kHz
136. The number of control channels for AMPS
- A. 25
- B. 23
- C. 21
- D. 19
137. The modulation technique used audio signal for TACS
- A. FM
- B. FSK
- C. TFSK
- D. QAM
138. Speech coding rate for GSM
- A. 80 kbps
- B. 25 kbps
- C. 21 kbps
- D. 13 kbps
139. Number of channels for GSM
- A. 333
- B. 666
- C. 124
- D. 248
140. It is a database that contains information about the identity of mobile equipment that prevents calls from stolen, unauthorized, or defective mobile stations.
- A. Equipment Identity Register
- B. Authentication Center
- C. Home Location Register
- D. Visitor Location Register
141. It provides all the control functions and physical links between the MSC and BTS
- A. OSS
- B. OMC
- C. MSC
- D. BSC
142. It is the functional entity from which the operator monitors and controls the mobile communication system.
- A. Operation and Maintenance System
- B. Mobile Switching Center
- C. Gateway Mobile Switching Center
- D. Operation and Support System
143. A node in the switching system of GSM that provides integrated voice, fax and data messaging.
- A. Gateway Mobile Switching Center
- B. Mobile Service Node
- C. GSM Internetworking Unit
- D. Message Center
144. It is a node in the switching system of GSM that handles mobile intelligent network services.
- A. Message Center
- B. Gateway Mobile Switching Center
- C. Mobile Service Unit
- D. Mobile Switching Center
145. The modulation scheme used for NADC
- A. NFSK
- B. Quarter wavelength Shifted QPSK
- C. GFSK
- D. Trellis coding
Post a Comment