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Computer Networking

Computer Networking
Which of the following provide inter-switch VLAN communication? 1. ISL 2. VTP 3. 802.1Q 4. 802.3Z

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

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Computer Networking
The signal to noise ratio for a voice grade line is 30.1 dB (decibels) or a power ratio of 1023:1. The maximum achievable data rate on this line whose spectrum ranges from 300 Hz to 4300 Hz is

6200 bps
34000 bps
9600 bps
31000 bps
None of these

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Computer Networking
HOSTS file entries are limited to how many characters?

None of these
255
500
8
Unlimited

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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.

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

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Computer Networking
Which fields are contained within an IEEE Ethernet frame header?1. Source and destination MAC address2. Source and destination network address3. Source and destination MAC address and source and destination network address4. FCS field

1 and 4
3 only
2 only
2 and 3 only

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Computer Networking
The 802.5 standard implements a way for preventing collisions on the network. How are collisions prevented when using this standard?

Collision detection
Token passing
Switched repeaters
Time sharing
CSMA/CD

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