Computer Networking
The core diameter of a single-mode fibers is about

10 times the wavelength of the light carried in the fiber
7 times the light carried in the fiber
10 times the fiber radius
3 times the wavelength of the light carried in the fiber
None of these

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Computer Networking
TCP is:

Connection orientated and reliable
None of these
Connectionless and unreliable
Operates at the Data Link layer
Connection orientated and unreliable

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Computer Networking
Which of the following characteristic(s) is/are suited to the PSS applications?

widely dispersed terminals and access to international packets switched services
All of these
bursty traffic and low communications intensity
None of these
Multiple remote host or applications accessed by a single local access circuit terminal and circuit

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Computer Networking
RS-232-G

requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
None of these
specifies only the mechanical characteristics of an interface by providing a 25-pin connector
is an interface between two data circuit terminating equipment as examplified by a local and remote modem
is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment

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