Do I Know This Already Quiz

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

The 12-question quiz, derived from the major sections in the "Foundation Topics" portion of the chapter, helps you to determine how to spend your limited study time.

Table 5-1 outlines the major topics discussed in this chapter and the "Do I Know This Already?" quiz questions that correspond to those topics.

Table 5-1 "Do I Know This Already?" Foundation Topics Section-to-Question Mapping

Foundation Topics Section

Questions Covered in This Section

Score

Configure a Cisco Router as a PPPoE client

1-2

Configure an Ethernet/ATM Interface for PPPoE

3-4

Configure the PPPoE DSL Dialer Interface

5-6

Configure Port Address Translation (PAT)

7-8

Configure DHCP for DSL Router Users

9-10

Configure Static Default Route on a DSL Router

11-12

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 for purposes of self-assessment. Giving yourself credit for an answer that you correctly guess skews your self-assessment results and might provide you with a false sense of security.

1. DSL operates at which layer of the OSI reference model?

a. Layer 1

b. Layer 2

c. Layer 3

d. Layer 4

2. Layer 3 connectivity will be established between the CPE and which device in the provider network?

a. DSLAM

b. Splitter c. Aggregation router d. Headend

3. In DSL installations using Ethernet interfaces for both subscriber-facing and provider-facing connectivity, which of the following is true?

a. The subscriber-facing Ethernet interface is configured with an IP address while the provider-facing Ethernet interface is not. A dialer interface will be configured for IP connectivity.

b. The provider-facing Ethernet interface is configured with an IP address while the subscriber-facing Ethernet interface is not. A dialer interface will be configured for IP connectivity.

c. Both the subscriber-facing and provider-facing Ethernet interfaces must have an IP address configured.

d. Neither the subscriber-facing Ethernet interface nor the provider-facing Ethernet interface needs an IP address. A dialer interface will be configured for IP connectivity.

4. In configuring an ATM interface for PPPoE connectivity, which commands are necessary? Choose all that apply.

a. atm pvc 0/32 encapsulation aal5snap b. dsl operating-mode auto c. pppoe-client dial-pool-number 1

5. The dialer interface controls which physical interface? Choose all that apply.

a. Subscriber-facing Ethernet b. Provider-facing Ethernet c. Provider-facing ATM

d. Subscriber-facing ATM

6. A logical dialer interface is bound to a physical interface by what?

a. Dialer group number on the physical interface that matches the dialer pool number on the dialer interface b. Dial pool number on the physical interface that matches the dialer pool number on the dialer interface c. DDR interesting traffic d. Dialer idle-timeout

7. Port Address Translation is dependent on the configuration of which technology in order to function?

d. DHCP

8. PAT allows which of the following?

a. One-to-one IP address translation through the CPE router b. Many-to-one IP address translation through the CPE router c. Application-specific port numbers to be manually configured for translation d. Static IP address translations

9. DHCP configuration must include which of the following? Choose all that apply.

a. IP address range b. DNS server(s)

c. Subnet mask d. WINS server(s)

e. TFTP server(s)

10. To avoid an address or range of addresses from being assigned to network hosts, which of the following should be configured?

a. dhcp reservation b. ip dhcp excluded-address c. import all d. DNS reverse-lookup

11. Which of the following are good reasons to use a static default route? Choose all that apply.

a. Decision made to disallow routing protocols at the teleworker sites b. Single entry/exit point (stub network) at the CPE site c. Limited router resources (CPU/memory)

d. Desire to avoid full static routing definition

12. Which of the following properly defines a static default route?

a. ip route 0.0.0.0 255.255.255.255 dialerO

c. ip default-gateway 0.0.0.0

d. ip default-network 0.0.0.0

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

■ 8 or fewer overall score—Read the entire chapter. This includes the "Foundation Topics," "Foundation Summary," and "Q&A" sections.

■ 9 or 10 overall score—Begin with the "Foundation Summary" section, and then go to the "Q&A" section.

■ 11 or more overall score—If you want more review on these topics, skip to the "Foundation Summary" section, and then go to the "Q&A" section. Otherwise, move to the next chapter.

Configure a Cisco Router as a PPPoE Client 113

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