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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
Which of the following statements are true?
A. $X.25$ is connection-oriented network.
B. $X.25$ doesn't support switched virtual circuits.
C. Frame relay service provides acknowledgements.
D. Frame relay service provides detection of transmission errors.
Choose the correct answer from the options given below:
A. $X.25$ is connection-oriented network.
B. $X.25$ doesn't support switched virtual circuits.
C. Frame relay service provides acknowledgements.
D. Frame relay service provides detection of transmission errors.
Choose the correct answer from the options given below:
Solution
$X.25$ is a connection-oriented packet switching network, so statement A is true.$X.25$ supports virtual circuits, including switched virtual circuits, so statement B is false.
Frame relay does not provide acknowledgements like reliable link protocols, so statement C is false.
Frame relay can detect transmission errors using error detection, but it generally discards erroneous frames instead of correcting them, so statement D is true.
Therefore, A and D only are true.
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