1. What is the transparency mechanism used with SDLC? 2. What supervisory condition exists with…

1. What is the transparency mechanism used with SDLC?

2. What supervisory condition exists with HDLC that is not included in SDLC?

3. What are the transparency mechanism and delimiting sequence for HDLC?

4. Briefly describe invert-on-zero encoding.

5. List and describe the HDLC operational modes.

6. Briefly describe the layout for a public switched data network.

7. What is a value-added network?