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Computer Networking

Computer Networking
Data are sent over pin _____ of the EIA-232 interface.

4
3
All of these
2

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Computer Networking
You telnet to a router and make your necessary changes; now you want to end the Telnet session. What command do you type in?

exit
disable
close
disconnect

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Computer Networking
How many digits of the Network User Address are known as the DNIC (Data Network Identification Code)?

first five
first three
first four
first seven
None of these

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Computer Networking
In a _____ topology, if there are n devices in a network, each device has n - 1 ports for cables.

ring
bus
None of these
star
mesh

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Computer Networking
Which of the following services dynamically resolves NetBIOS-to-IP resolution?

WINS
DNS
None of these
LMHOSTS
DHCP

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Computer Networking
Who invented the modem?

Apple Computers Inc.
Wang Laboratories Ltd.
AT & T Information Systems, USA
None of these
Digital Equipment Corpn.

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