Computer Science Homework Help

The most widely used data communication service is Frame Relay, which was developed as part of the ISDN project. It can be used in private and public network configurations. Frame Relay uses variable size pockets or frames, and the process is simpler than X.25. Data rates of 2 Megabits can be achieved.

According to Forouzan (2007, p. 453), Frame Relay provides permanent virtual circuits and switched virtual circuits. For example, Frame Relay network can be connected to the Internet and internal LANs and WANs through the use of routers. Frame Relay WANs can be used as one link in the global Internet.

SLP 4 reviews sections 17 and 19 of the Data Communication and Networking e-textbook.

https://books.google.com/books?id=bwUNZvJbEeQC&pri…

Assignment

SLP questions were extracted from Forouzan (2007, p. 465). Use the hex converter http://www.binaryhexconverter.com/ for the following exercises.

Submit the assignment answers in a 2- to 3-page Word document.

• The address field of a Frame Relay frame is 1011000000010111. What is the DLCI in decimal? What is the DLCI in binary?
• The address field of a Frame Relay frame is 101100000101001. Is this valid?
• Find the DLCI value if the first 3 bytes received is 7C 74 El in hexadecimal.
• Find the value of the 2-byte address field in hexadecimal if the DLCI is 178. Assume no congestion. 
• How does Frame Relay differ from X.25?
• What is SONET and SONET/SDH? What are the various devices that can interconnect to SONET?