Exercise: Networking

Questions for: Networking

In a _____ topology, if there are n devices in a network, each device has n - 1 ports for cables.
A:
ring
B:
bus
C:
star
D:
mesh
Answer: D
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Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.
A:
Network collisions occur
B:
Repeaters cannot increase the signal strength sufficiently
C:
Cable terminators do not reflect the signal properly
D:
Cable terminators do not absorb the signal properly
Answer: A
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On a class B network, how many subnets are available with a subnet mask of 248?
A:
2
B:
6
C:
30
D:
62
Answer: C
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What is the main difference between DDCMP and SDLG?
A:
DDCMP does not need special hardware to final the beginning of a message.
B:
DDCMP has a message header
C:
SDLC has a IP address
D:
SDLC does not use CRC
Answer: A
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What is the name of the device that connects two computers by means of a telephone line?
A:
Tape
B:
modem
C:
bus
D:
cable
Answer: B
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