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Computer Networking

Computer Networking
An internetworking protocol that provides virtual circuit service across multiple X.25 protocol, is

X.75
None of these
X.21
X.400
X.25

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Computer Networking
Which of the following is considered a broadband communications channel?

coaxial cable
satellites systems
All of these
fiber optic cable
microwave circuits

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

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

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Computer Networking
Establishing a virtual connection is functionally equivalent to

Connecting as virtual memory
Physically connecting a DTE and DCE
None of these
Placing a telephone call prior to a conversation
Placing a modem prior to a conversation

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Computer Networking
What frequency range is used for FM radio transmission?

Very High Frequency : 30 MHz to 300 MHz
None of these
Low Frequency : 30 kHz to 300 kHz
High Frequency : 3 MHz to 30 MHz
Very Low Frequency : 3 kHz to 30. kHz

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Computer Networking
If odd parity is used for ASCII error detection, the number of 0s per eight-bit symbol is _____.

even
42
odd
indeterminate

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