MCQ 21'/23' Flashcards
Which one among the following options is a wireless channel mitigation?
a) Path loss
b) Shadowing
c) Multipath fading
d) Code planning
D
Which one among the following functionalities does not belong to the OSI network layer?
a) Medium access
b) Routing
c) Handover
d) Device location
A
Which one among the following technologies is the least suitable for wireless
wide area networks?
a) 5G
b) 4G
c) Terahertz
d) LoRa
C
In the Kendall’s notation a/b/m/K, what is ‘b’ indicating?
a) Service time distribution
b) Number of servers
c) Maximum number of customers allowed
d) Type of arrival proces
Which one among the following options, would likely be most suitable to
comply with the requirements of Ultra Reliable & Low Latency
Communication systems?
a) Spatial multiplexing & 64-QAM
b) Spatial multiplexing & QPSK
c) Spatial multiplexing & 16-QAM
d) Spatial multiplexing & 256-QAM
B
Which one among the statements about schedulers is incorrect?
a) Round robin is simple in terms of implementation
b) Maximum C/I is well suited for HD video streaming
c) Proportional fair is not in use in 4G systems
d) WiFi scheduling is fundamentally different as compared to the
scheduling used by cellular systems
Which of the following options is helpful in increasing the data rate?
a) Using higher order modulation
b) Employing a frequency mitigation technique
c) Increasing the number of antennas used in the mobile phone
d) All of the above
D
Why is chromatic dispersion an issue for optical fibre transmission in
telecommunications networks?
a) Because it cannot be compensated
b) Because its effect is worse than modal dispersion
c) Because it increases the transmission loss
d) Because it creates inter-symbol interference
D
Q.20
Which of the following statements is false about optical amplifiers?
a) They decrease the Optical Signal to Noise Ratio (OSNR)
b) They add thermal noise
c) They can be deployed in a chain configuration to reach longer distance
d) One amplifier can be used for multiple wavelength channels
D
