
The PSDN transport core normally is drawn as a cloud ________.
A) because it has no internal structure
B) for security reasons
C) because customers do not need to care about what is inside it
D) all of the above
Correct Answer:
Verified
Q25: For their transmission medium,cable television companies primarily
Q27: In coaxial cable,the two conductors _.
A) run
Q32: Two-way amplifiers are needed for cable _
Q44: In _,switching decisions are based on destination
Q46: Service quality issues with the Internet can
Q47: A firm uses a PSDN.It has four
Q49: Frame Relay frames contain _.
A)destination addresses
B)virtual circuit
Q51: Metropolitan area Ethernet is used primarily _.
A)in
Q52: The use of virtual circuits _.
A)reduces costs
B)improves
Q53: To deliver signals to individual residences,cable television
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