HIGH SPEED WIDE-AREA NETWORKSThe 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.
SLP 4 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?
SLP Assignment Expectations
The report should:
Demonstrate clear understanding of the subject and address all key elements of the assignment.
Show analysis, synthesis, and evaluation of required material.
Demonstrate writing proficiency at the academic level of the course; address the Learning Outcomes of the assignment.
Use and cite relevant and credible sources to support assertions. The report is well organized and follows the structure of a well-written paper. APA style format is
applied for all citations.
