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Computer Networking

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

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

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

x400
Teletex
Fax
Teletext
None of these

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Computer Networking
Which statements are true regarding ICMP packets?1. They acknowledge receipt of a TCP segment.2. They guarantee datagram delivery.3. They can provide hosts with information about network problems.4. They are encapsulated within IP datagrams.

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

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Computer Networking
Data communications system depends on four fundamental characteristics

Receiver
Medium
Sender
Timeliness

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Computer Networking
The IEEE 802 project of the 1980s involved further defining the lower two layers of the OSI model. A number of standards were agreed upon during that time. Which of the following is the standard for Ethernet?

802.6
802.4
802.5
802.2
802.3

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Computer Networking
For connecting modem, a computer must be equipped with a port that conforms to the RS-232 standard of the Electronic Industries Association of America. What do the letters 'RS' stand for?

None of these
Registered source
Random sequence
Recognised standard
Recommended standard

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