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Computer Networking

Computer Networking
On a class B network, how many subnets are available with a subnet mask of 248?

2
6
62
30
126

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

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

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Computer Networking
A communications device that combines transmissions from several I/O devices into one line is a:

multiplexer
full-duplex line
modifier
concentrator
None of these

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Computer Networking
Which of the following files is used for NetBIOS name resolution?

FQDN
None of these
HOSTS
LMHOSTS
ARP

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Computer Networking
How many bits internet address is assigned to each host on a TCP/IP internet which is used in all communications with the host?

32 - bits
48 - bits
64 - bits
None of these
16 - bits

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Computer Networking
To back up an IOS, what command will you use?

backup IOS disk
copy tftp flash
copy ios tftp
copy flash tftp

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