TEL103: Telecommunications 3

Instructor Home | TEL103 Home | Syllabus | Assignments/Resources

Assignment 6

1. Identify four ways that WANs differ from LANs.
2. A multi-access switched service uses which type of WAN connection?
3. In which type of WAN connection can data packets from a single message travel on different paths?
4. What type of connection can devices use HDLC for?
5. How does PPP extend the functionality of HDLC?
6. Why is Frame Relay not considered a dedicated service?
7. Transmitting several types of data simultaneously across a single line where bandwidth to virtual circuits is allocated dynamically on a per-packet basis is what type of multiplexing?
8. The throughput of an ISDN BRI connection is:
9. Identify one reason why ATM is faster than ISDN and Frame Relay.
10. Two WAN connection devices typically reside at the customer location. Which one provides connection from the customer site to the telco network?
11. The physical connection at the end of a WAN connection is always the:
12. The connection between the WAN service provider and the DCE is called:
13. Who is typically responsible for the connection between the DTE and the DCE?
14. Which WAN physical standard defines the DTE/DCE synchronous communication interface?
15. The __________ WAN topology is most expensive while the star topology is the most ____________.

• Asymmetrical/Symmetrical
• Asynchronous/Synchronous
• ATM
• CSU/DSU
• CPE
• Circuit-switched
• DCE/DTE
• Flag
• HDLC
• Local Loop
• Multiplexed
• Packet-switched
• Simplex/half-duplex/full-duplex
• Statistical Multiplexing
• TDM
• Virtual Circuit