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Computer Networking

Computer Networking
What is the maximum distance with maximum data rate for 802.11b?

About 150 feet
Over 200 feet
About 65-75 feet
About 90-100 feet

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Computer Networking
Distributed Queue Dual Bus is a standard for

LAN
Wireless LAN
MAN
WAN
LAN and MAN

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Computer Networking
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?

64 kbps.
128 kbps
8 kbps
32 kbps
None of these

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Computer Networking
Modem is used in data transmission. When was it invented and in which country?

1965, Germany
1950, USA
1963, USA
1950, Japan
None of these

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Computer Networking
What is the result of segmenting a network with a bridge (switch)?1. It increases the number of collision domains.2. It decreases the number of collision domains.3. It increases the number of broadcast domains.4. It decreases the number of broadcast domains.5. It makes smaller collision domains.6. It makes larger collision domains.

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

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Computer Networking
Which of the following connectivity devices is used to extend a network on a purely mechanical basis?

Switch
Router
Active hub
Gateway
802.6

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