Do I Know This Already? Quiz


"Do I Know This Already?" Quiz

The purpose of the "Do I Know This Already?" quiz is to help you decide what parts of this chapter to use. If you already intend to read the entire chapter, you do not necessarily need to answer these questions now.

The quiz, derived from the major sections in the "Foundation Topics" portion of the chapter, helps you determine how to spend your limited study time.

Table 16-1 outlines the major topics discussed in this chapter and the "Do I Know This Already?" quiz questions that correspond to those topics.

Table 16-1. "Do I Know This Already?" Foundation Topics Section-to-Question Mapping

Foundation Topics Section

Questions Covered in This Section

Score

Power over Ethernet

12

 

Voice VLANs

37

 

Voice QoS

810

 

Verifying IP Telephony

1112

 

Total Score

  


Caution

The goal of self-assessment is to gauge your mastery of the topics in this chapter. If you do not know the answer to a question or are only partially sure of the answer, you should mark this question wrong. Giving yourself credit for an answer you correctly guess skews your self-assessment results and might give you a false sense of security.


1.

For a Catalyst switch to offer Power over Ethernet to a device, what must occur?

  1. Nothing; power always is enabled on a port.

  2. The switch must detect that the device needs inline power.

  3. The device must send a CDP message asking for power.

  4. The switch is configured to turn on power to the port.

2.

Which one of these commands can enable Power over Ethernet to a switch interface?

  1. inline power enable

  2. inline power on

  3. power inline on

  4. power inline auto

3.

What does a Cisco IP Phone contain to allow it to pass both voice and data packets?

  1. An internal Ethernet hub

  2. An internal two-port switch

  3. An internal three-port switch

  4. An internal four-port switch

4.

How can voice traffic be kept separate from any other data traffic through an IP Phone?

  1. Voice and data travel over separate links.

  2. A special-case 802.1Q trunk is used to connect to the switch.

  3. Voice and data can't be separated; they must intermingle on the link.

  4. Voice and data packets both are encapsulated over an ISL trunk.

5.

What command configures an IP Phone to use VLAN 9 for voice traffic?

  1. switchport voice vlan 9

  2. switchport voice-vlan 9

  3. switchport voice 9

  4. switchport voip 9

6.

What is the default voice VLAN condition for a switch port?

  1. switchport voice vlan 1

  2. switchport voice vlan dot1p

  3. switchport voice vlan untagged

  4. switchport voice vlan none

7.

If the switchport voice vlan 50 command has been used, what VLAN numbers will the voice and PC data be carried over, respectively?

  1. VLAN 50, native VLAN

  2. VLAN 50, VLAN 1

  3. VLAN 1, VLAN 50

  4. native VLAN, VLAN 50

8.

When a PC is connected to the PC switch port on an IP Phone, how is QoS trust handled?

  1. The IP Phone always trusts the class of service (CoS) information coming from the PC.

  2. The IP Phone never trusts the PC and always overwrites the CoS bits.

  3. QoS trust for the PC data is handled at the Catalyst switch port, not the IP Phone.

  4. The Catalyst switch instructs the IP Phone how to trust the PC QoS information.

9.

An IP Phone should mark all incoming traffic from an attached PC to have CoS 1. Complete the following switch command to make that happen:

switchport priority extend __________________________

  1. untrusted

  2. 1

  3. cos 1

  4. overwrite 1

10.

What command can verify the Power over Ethernet status of each switch port?

  1. show inline power

  2. show power inline

  3. show interface

  4. show running-config

11.

What command can verify the voice VLAN used by a Cisco IP Phone?

  1. show cdp neighbor

  2. show interface switchport

  3. show vlan

  4. show trunk

12.

Which DSCP codepoint name usually is used for time-critical packets containing voice data?

  1. 7

  2. Critical

  3. AF

  4. EF

The answers to the "Do I Know This Already?" quiz are found in Appendix A, "Answers to Chapter 'Do I Know This Already?' Quizzes and Q&A Sections." The suggested choices for your next step are as follows:

  • 10 or less overall score Read the entire chapter. This includes the "Foundation Topics," "Foundation Summary," and "Q&A" sections.

  • 11 or 12 overall score If you want more review on these topics, skip to the "Foundation Summary" section and then go to the "Q&A" section at the end of the chapter. Otherwise, move to Chapter 17, "Securing Switch Access."



CCNP Self-Study(c) CCNP BCMSN Exam Certification Guide
Red Hat Fedora 5 Unleashed
ISBN: N/A
EAN: 2147483647
Year: 2003
Pages: 177

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