Name: Homework #4 - CSIS 625 - Spring 2002 - Oelke Due Week 12 (April 23, 2002) by classtime Instructions: Email this document with your answers filled in to droelke@stthomas.edu Put the text as unformatted text in the body of your message, not as an attachment. Define the following: 1) Class 5 switch: 2) IXC: 3) PAD: 4) FRAD: 5) ATM: 6) AAL: 7) VPI: 8) ABR: 9) POTS: 10) SDH: 11) STS-3c: 12) 3pts Extra Credit: TLA & EFLA: Short Answer: 13) Compare the strengths and weaknesses of X.25 vs. Frame Relay 14) Describe the differences between a PBX System and a Centrex service. Why would someone choose one over the other? 15) Compare a repeater, an amplifier, and a bridge. 16) Compare the different methods of determining "cost" in least cost routing. Explain advantages and disadvantages of each. 17) Compare Distance Vector and Link State Routing mechanisms. What are strengths and weaknesses of each. 18) Question 18 deleted as we didn't cover the material yet.