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Computer Networking

Computer Networking
How many pairs of stations can simultaneously communicate on Ethernet LAN?

None of these
3
1
multiple
2

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Computer Networking
Which of the following communications service provides message preparation and transmission facilities?

Teletex
Teletext
None of these
Fax
x400

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Computer Networking
The _____ layer is the layer closest to the transmission medium.

None of these
transport
data link
network
physical

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Computer Networking
What is the maximum distance running the lowest data rate for 802.11g?

About 100 feet
About 175 feet
About 350 feet
About 300 feet

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Computer Networking
What frequency range is used for microwave communications, satellite and radar?

Medium Frequency : 300 kHz to 3 MHz
None of these
Super High Frequency : 3000 MHz to 30000 MHz
Extremely High Frequency :30,000 MHz
Low Frequency : 30 kHz to 300 kHz

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Computer Networking
Which layer of OSI determines the interface of the system with the user?

Network
None of these
Data-link
Session
Application

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