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Computer Networking

Computer Networking
Which WLAN IEEE specification allows up to 54Mbps at 2.4GHz?

N
A
G
B

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Computer Networking
When you ping the loopback address, a packet is sent where?

Down through the layers of the IP architecture and then up the layers again
On the network
through the loopback dongle
None of these
Across the wire

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Computer Networking
What are the distinct functions of layer 2 switching that increase available bandwidth on the network?1. Address learning2. Routing3. Forwarding and filtering4. Creating network loops5. Loop avoidance6. IP addressing

2 and 6
3 and 5
1, 3 and 5
2, 4 and 6

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Computer Networking
Which of the following is not a disadvantage of wireless LAN?

Slower data transmission
interference of transmissions from different computers
All of these
higher error rate

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Computer Networking
Which of the following condition is used to transmit two packets over a medium at the same time?

None of these
Asynchronous
Collision
Synchronous
Contention

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Computer Networking
The channel in the data communication model can be

None of these
postal mail service
radio signals
telephone lines
All of these

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