O'Reilly logo

Cisco Frame Relay Solutions Guide by Jonathan Chin

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Appendix A. Answers to Review Questions

1:

What is Frame Relay?

A1:

Frame Relay is a high-speed packet-switched technology for interconnecting geographically dispersed LANs or WANs via a shared network. To minimize protocol overheads associated with legacy WAN technology such as X.25, Frame Relay does not perform any error correction functions at the data-link layer where it operates. Rather, Frame Relay relies on upper-layer protocols to recover from errors or loss of frames. The Frame Relay header only supports a CRC field to detect corrupted frames. Hence, Frame Relay requires a reliable physical layer transport medium.

2:

What is a virtual circuit?

A2:

A virtual circuit is an end-to-end logical connection between two end points set up ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required