Data Communication and Computer Networks - Network Models
12. Which layer functions as a liaison between user support layers and network support layers ?
- Option : C
- Explanation : 7 layer of 081 model are divided into the following groups :
Physical, datalink, network transport, - Network support layers
Application, Presentation, Session - User support layers.
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13. Which of the following are session layer checkpoints?
- Option : A
- Explanation : The purpose of check points or synchronization is allow just a portion of file to be resent. To avoid the retransmission of frames, session layer adds check points to the data unit.
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- Option : C
- Explanation : Any layer can transfer data basing on its bandwidth (data handling capacity) i.e. it is limited to certain extent, i.e. capability data.
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