O'Reilly logo

CCIE Routing and Switching Exam Certification Guide, Third Edition by Naren Mehta - CCIE No. 9797, Rus Healy - CCIE No. 15025, Wendell Odom - CCIE No. 1624

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 the “Do I Know This Already?” Quizzes

Chapter 1

1.

C and E

2.

A

3.

C

If a Cisco switch port has only speed or duplex configured, the interface still uses auto-negotiation Fast Link Pulses (FLP) to negotiate the setting that was not configured. There is no explicit command to disable auto-negotiation.

4.

B and C

Cisco switches disable auto-negotiation after the speed and duplex have been configured. The other switch attempts auto-negotiation and fails. However, the unconfigured switch can detect the speed even without auto-negotiation. By default, 10-Mbps and 100-Mbps ports use half duplex when they are unable to auto-negotiate a duplex setting.

5.

C and D

The half-duplex switch leaves its loopback circuitry enabled, erroneously detecting ...

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