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?

X.25
SMTP
VMTP
None of these
UDP

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Computer Networking
Satellite-Switched Time-Division Multiple Access (SS/TDMA) is

None of these
a form of TDMA in which circuit switching is used to dynamically change the channel assignments
a medium access control technique for multiple access transmission media
All of these
the method of determining which device has access to the transmission medium at any time.

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