"Do I Know This Already?" Quiz

The purpose of the "Do I Know This Already?" quiz is to help you decide whether you 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 15-question 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 10-1 outlines the major topics discussed in this chapter and the "Do I Know This Already?" quiz questions that correspond to those topics.

Table 10-1. "Do I Know This Already?" Foundation Topics Section-to-Question Mapping

Foundation Topics Section Covering These Questions	Questions	Score
Application Requirements	1-5
Best Practices Methodology	6-10
Best Practices Implementations	11-15
Total Score

You can find the answers to the "Do I Know This Already?" quiz 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 less overall score Read the entire chapter. This includes the "Foundation Topics", the "Foundation Summary", and the "Q&A" sections.
  
  
• 9 or 10 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.
  
  

1.	Which of the following traffic types provides a consistent packet exchange? Interactive video Voice media Voice signaling Mission-critical data
2.	Which of the following factors influence the bandwidth requirements of a VoIP call? Layer 3 routing protocol Layer 2 media type Codec selection Speech samples per packet
3.	The International Telecommunications Union (ITU) G.114 specification states that the one-way delay of a voice packet should not exceed how many milliseconds (ms)? 100 150 200 250
4.	How much bandwidth should be provisioned for a 384-kbps interactive video stream? 384 kbpsThe average rate of the stream 460.8 kbpsThe average rate of the stream + 20% 768 kbpsThe average rate of the stream * 2 192 kbpsThe size of H.264 compressed video
5.	How sensitive is mission-critical data to jitter? (Link: Data Traffic) Low Low to moderate Moderate to high High
6.	A converged network should be designed for less than what percentage of packet loss in the class that supports real-time applications? .5 1 1.5 5
7.	A converged network should be designed for less than how many milliseconds of jitter in the class that supports real-time applications? 10 20 30 40
8.	Where should traffic be classified? In the core As close to the source as possible As close to the destination as possible On the WAN router
9.	What is the recommended differentiated services code point (DSCP) value for scavenger traffic? 0 CS0 CS1 AF13
10.	What is the recommended DSCP class for bulk data applications? AF1x AF2x AF3x EF
11.	What are the preferred methods of queuing on Cisco routers? PQ and CBWFQ PQ and CQ LLQ and CBWFQ LLQ and CQ
12.	When using LFI, what is the recommended serialization delay of a voice packet? 510 ms 1015 ms 1520 ms 2025 ms
13.	Where does WRED perform the most effectively? When applied to the LLQ When applied to a CBWFQ that services UDP applications When applied to a CBWFQ that services TCP applications When applied to a CBWFQ that services both UDP and TCP applications
14.	What QoS mechanism should never be used in the core of the campus LAN? Classification and marking Congestion management Congestion avoidance
15.	If the service provider manages the CE router, what inbound policy is required on the PE router? Classification and marking Congestion management Policing All of the above None of the above