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Computer Networking

Computer Networking
An example of an analog communication method is

laser beam
All of these
voice grade telephone line
microwave
None of these

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Computer Networking
Which of the following are unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?1. Half-duplex Ethernet operates in a shared collision domain.2. Half-duplex Ethernet operates in a private collision domain.3. Half-duplex Ethernet has higher effective throughput.4. Half-duplex Ethernet has lower effective throughput.

2 only
1,2 and 3
4 only
1 and 4

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Computer Networking
In a _____ topology, if there are n devices in a network, each device has n - 1 ports for cables.

ring
star
mesh
bus
None of these

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Computer Networking
Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

KIK (1 + F)
None of these
K I (K - P)
P I (K + 1)
1/ (1 - F)

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Computer Networking
Telecommunications networks come in a wide range of speed and capacity capabilities. Select the best fit for answer:

None of these
Switching alternating
Inter organizational networks
Bandwidth alternatives
Extranets

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Computer Networking
You have a network with a subnet of 172.16.17.0/22. Which is the valid host address?

172.16.18.255 255.255.252.0
172.16.17.1 255.255.255.252
172.16.0.1 255.255.240.0
172.16.20.1 255.255.254.0

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