Computer Networking
CSMA (Carrier Sense Multiple Access) is

network access standard for connecting stations to a circuit-switched network
None of these
a very common bit-oriented data link protocol issued by ISO.
a method of determining which device has access to the transmission medium at any time
a method access control technique for multiple-access transmission media.

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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
None of these
the virtual circuit interface to packet-switched service
All of these
data link procedures that provide for the exchange of data via frames that can be sent and received

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Computer Networking
You need to create an access list that will prevent hosts in the network range of 192.168.160.0 to 192.168.191.0. Which of the following lists will you use?

access-list 10 deny 192.168.160.0 0.0.191.255
access-list 10 deny 192.168.160.0 255.255.224.0
access-list 10 deny 192.168.0.0 0.0.31.255
access-list 10 deny 192.168.160.0 0.0.31.255

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