Exercise: Networking

Questions for: Networking

The _____ layer is the layer closest to the transmission medium.
A:
transport
B:
network
C:
data link
D:
physical
Answer: D
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What is the minimum number of wires needed to send data over a serial communication link layer?
A:
1
B:
2
C:
4
D:
6
Answer: B
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Which of the following data transmission media has the largest terrestrial range without the use of repeaters or other devices?
A:
Hardwiring
B:
Microwave
C:
Satellite
D:
Laser
Answer: C
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The area of coverage of a satellite radio beam is known as
A:
Footprint
B:
Circular polarization
C:
Beam width
D:
Identity
Answer: A
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Error detection at the data link level is achieved by?
A:
Bit stuffing
B:
Hamming codes
C:
Cyclic Redundancy codes
D:
Equalization
Answer: C
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