Computer Networking
Most data communications involving telegraph lines use:

None of these
wideband channels
narrowband channels
dialed service
simplex lines

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Computer Networking
The physical layer, in reference to the OSI model, defines

the interface between the X.25 network and packet mode device
All of these
None of these
data link procedures that provide for the exchange of data via frames that can be sent and received
the virtual circuit interface to packet-switched service

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Computer Networking
Which of the following access lists will allow only HTTP traffic into network 196.15.7.0?

access-list 10 deny tcp any 196.15.7.0 eq www
access-list 100 permit 196.15.7.0 0.0.0.255 eq www
access-list 100 permit tcp any 196.15.7.0 0.0.0.255 eq www
access-list 110 permit ip any 196.15.7.0 0.0.0.255

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