In circuit switching,communicating devices are connected _____.
A) all the time
B) most of the time
C) on demand
D) None of the above
Correct Answer:
Verified
Q1: The phone network is also called the
Q2: The most important contribution of the Telecommunications
Q3: The phone system transmits signals in the
Q4: In the early years of the 20th
Q5: Once a connection is established using circuit
Q7: The first widely used network to obtain
Q8: Cell phone systems divide the coverage area
Q9: In the phone network,the local loop is
Q10: The unit of frequency is _.
A)volts
B)degrees
C)hertz
D)angstrom
Q11: As a result of frequency reuse,the cell
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