Computer Networking
In OSI model, which of the following layer transforms information from machine format into that understandable by user

presentation
physical
session
None of these
application

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Computer Networking
The data-link layer, in reference to the OSI model, specifies

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

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Computer Networking
Carrier is

a collection of interconnected functional units that provides a data communications service among stations attached to the network
None of these
the condition when two or more sections attempt to use the same channel at the same time
a continuous frequency capable of being modulated or impressed with a second signal
One or more conductors that serve as a common connection for a related group of devices

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