Computer Networking
The X.25 standard specifies a

technique for dial access
technique for start-stop data
data bit rate
None of these
DTE/DCE interface

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Computer Networking
Two computers that communicate with each other use a simple parity check to detect errors for ASCII transmissions. Which of the following events will always lead to an undeleted error?

one bit or any odd number of bits inverted in a byte during transmission
one bit or any odd number of bits inverted in a block of data during transmission
None of these
two bits or any even number of bits inverted in a block during transmission
two bits or any even number of bits inverted in a byte during transmission

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Computer Networking
Which of the following statements is correct for the use of packet switching?

None of these
the subdivision of information into individually addressed packets in conjunction with alternative routing arrangement enabled the transmission path to be altered in the event of congestion or individ
the employment of additional intelligence within the network enabled more sophisticated error control and link control procedures to be applied
by employing wide bandwidth circuits for the trunk networks substantial economies through extensive sharing of capacity could be achieved.
All of these

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