Cisco® Network Professional's: Advanced Internetworking Guide

11.7. Answers to Review Questions

1. B. Broadband cable gives the user more bandwidth.

2. C. HFC stands for hybrid fiber coax.

3. A. The NTSC standard is used in North America.

4. B. The channel is 6 MHz wide.

5. A. The most common flavor is ADSL.

6. B. HDSL is commonly used for T1 replacement.

7. C. PPPoE is the most common type used.

8. B. The MPLS label is placed between the Layer 2 and 3 headers, making it the Layer 2½ header.

9. C. The EXP field is used to carry QoS bits.

10. B. PHP prevents the last router from having to do a double lookup, one for the label and a second for the IP destination.