76. The physical layer is responsible for
a) line coding
b) channel coding
c) modulation
d) all of the mentioned Answer: d
77. The sharing of a medium and its link by two or more devices is called
a) Fully duplexing
b) Multiplexing
c) Micropleixng
d) Duplexing
Answer: b
78. The required resources for communication between end systems are reserved for the duration of the session between end systems in method.
a) Packet switching
b) Circuit switching
c) Data switching
d) Packet & Circuit switching
Answer: b
79. Which multiplexing technique used to transmit digital signals?
a) FDM
b) TDM
c) WDM
d) FDM & WDM
Answer: b
80. A local telephone network is an example of a _ network.
a) Packet switched
b) Circuit switched
c) Bit switched
d) Line switched
Answer: b
81. Most packet switches use this principle
a) Stop and wait
b) Store and forward
c) Store and wait
d) Stop and forward
Answer: b
82. If there are N routers from source to destination, the total end to end delay in sending packet P(L-> number of bits in the packet R-> transmission rate) is equal to
a) N
b) (N*L)/R
6
c) (2N*L)/R
d) L/R
Answer: b
83. What are the Methods to move data through a network of links and switches?
a) Packet switching and Line switching
b) Circuit switching and Line switching
c) Line switching and bit switching
d) Packet switching and Circuit switching Answer: d
84. The required resources for communication between end systems are reserved for the duration of the session between end systems in method.
a) Packet switching
b) Circuit switching
c) Line switching
d) Frequency switching
Answer: b
85. As the resources are reserved between two communicating end systems in circuit switching, is achieved.
a) authentication
b) guaranteed constant rate
c) reliability
d) store and forward
Answer: b
 Questions | PDF | Quiz To test your Knowledge 1000 MCQs | Geekforgeeks.in){kind=link}
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