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Computer Networking

Computer Networking
The OCR reading unit attached to a POS terminal is called a

None of these
All of these
cursor
wand
light pen

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Computer Networking
Which of the following digits are known as the sub-address digits (for use by the user) of the Network User Address (NUA)?

None of these
08-Dec
05-Jul
13-14
01-Apr

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Computer Networking
A default Frame Relay WAN is classified as what type of physical network?

Broadcast multi-access
Point-to-point
Non-broadcast multipoint
Non-broadcast multi-access

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Computer Networking
Which transmission mode is used for data communication along telephone lines?

None of these
Parallel
Serial
Asynchronous
Synchronous

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Computer Networking
Switching at the network layer in the Internet uses the datagram approach to:

Circuit switching
Message switching
Packet switching
IP switching

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Computer Networking
Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?1. Switch2. NIC3. Hub4. Repeater5. RJ45 transceiver

All of these
1 only
3 and 4
5 only
1 and 3

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