hello,every nice guy,please give me correct answer.thanks.

1) Which three protocols are derivates of the SDLC protocol?

A. SIP
B. PLP
C. QLLC
D. HDLC
E. 8O2.2

Last edited by kennyjava on 12-15-01 at 10:58 PM

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Nice guy, where the heck did you find these questions?!

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Originally posted by kennyjava
1) Which three protocols are derivates of the SDLC protocol?

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I've never heard of SIP and QLLC . PLP, afaik, is a network layer protocol, do it doesn't fit. HDLC and 802.2 (LLC) are definitely related to SDLC. (OK, I searched on the web, and QLLC seems to be related to SDLC too.)

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2)To list the network protocols and the number of users and hosts,you can use the followingjob aid.To which category would "frame Relay" belong?

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This question doesn't make too much sense; however, the only choice that fits with "Frame Relay" is "name of protocol".

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3) Which three layers of the OSI reference model are addressed by the ITU-T ISDN standards?

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Physical, Datalink and Network

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4)WAN protocols can operate at three layers of the OSI reference model. What are they?

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Physical, Datalink and Network

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QLLC
HDLC
802.2(LLC)


LAP B is also derivate of SDLC. I found this in "Internetworking Technologies Handbook" third edition. Good Luck!!

P.S. For dmaftei:

SIP (Session Initiation Protocol)- VoIP signalization

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