Computer Networking
Which of the following TCP/IP protocol allows an application program on one machine to send a datagram to an application program on another machine?

UDP
X.25
SMTP
None of these
VMTP

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Computer Networking
MAC is

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

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