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 whether you need to read the entire chapter. If you 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 determine how to spend your limited study time.

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

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

Foundation Topics Section	Questions Covered in This Section	Score
Switching Functionality	13
Campus Networks, Traffic Pattern Models	47
Hierarchical Design Model	812
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 provide you with a false sense of security.

You can find the answers to the quiz 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:

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

• 79 overall scoreBegin with the "Foundation Summary" section and then follow up with the "Q&A" section at the end of the chapter.

• 10 or more overall scoreIf 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 on to Chapter 2, "Modular Network Design."

1.	Layer 2 switching uses which of the following values to forward data? IP address IPX address MAC address RIP address UDP port
2.	Multilayer switching (MLS) forwards packets based on what OSI layers? Layer 1 Layer 2 Layer 3 Layer 4 b, c, d a, b, c, d
3.	Which of the following does a multilayer switch perform? Forwarding according to MAC address. Forwarding according to IP address. Forwarding according to UDP/TCP port numbers. All of these answers are correct.
4.	What does the 20/80 rule of networking state? (Pick one.) Only 20 out of 80 packets arrive at the destination. Twenty percent of the network is used 80 percent of the time. Twenty percent of the traffic on a network segment travels across the network, while 80 percent of it stays local. Twenty percent of the traffic on a network segment stays local, while 80 percent of it travels across the network.
5.	Where does a collision domain exist in a switched network? On a single switch port Across all switch ports On a single VLAN Across all VLANs
6.	Where does a broadcast domain exist in a switched network? On a single switch port Across all switch ports On a single VLAN Across all VLANs
7.	What is a VLAN primarily used for? To segment a collision domain To segment a broadcast domain To segment an autonomous system To segment a spanning-tree domain
8.	How many layers are recommended in the hierarchical campus network design model? 1 2 3 4 7
9.	End-user PCs should be connected into which of the following hierarchical layers? Distribution layer Common layer Access layer Core layer
10.	In which OSI layer should devices in the distribution layer typically operate? Layer 1 Layer 2 Layer 3 Layer 4
11.	A hierarchical network's distribution layer aggregates which of the following? Core switches Broadcast domains Routing updates Access-layer switches
12.	In the core layer of a hierarchical network, which of the following are aggregated? Routing tables Packet filters Distribution switches Access-layer switches