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Originally posted by bbraunstein
This question was the practice question of the day today for 70-216:

http://www.examnotes.net/?action=ch...284&test=a70216
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Question: Concerning the OSI model, what functions does the session layer perform?

A) The session layer allows applications running on different computers to make multiple connections as required, none of which are required to be common to any other connection. The session layer also provides

B) The session layer allows applications running on different computers to share a common connection. The session layer also provides for data synchronization and check pointing, so in the event a session fails, only the data transmitted after that point will require retransmission.

C) The session layer translates data between the format that the computer uses and the format that the computer generates. The session layer also performs compression and encryption.

D) The session layer provides services to applications running on the computer to enable communications between applications on sources and destination computers.

It says that the answer is "B", and here is the explanation that it gives:

From the Windows 2000 Server Administrators Companion (Appendix C), the transport layer is the layer responsible for ensuring that all packets are sent out error-free. The transport layer breaks up larger pieces of data into smaller pieces and assigns each one a sequence number, which ensure that no packet loss or packet duplication occurs during the transmission.

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Is it just me or does this not make any sense? The question asks about the session layer but the answer talks about the transport layer. I think someone might have been smoking something when they wrote this?? Also note that the answer "A" is incomplete...this isn't because I didn't paste the entire answer, that's really what was there. Anyone have any clue what this is all about?

Thanks! --BB

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