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 13-1 outlines the major topics discussed in this chapter and the "Do I Know This Already?" quiz questions that correspond to those topics.

Table 13-1. "Do I Know This Already?" Foundation Topics Section-to-Question Mapping

Foundation Topics Section	Questions Covered in This Section	Score
InterVLAN Routing	15
Multilayer Switching with CEF?	611
Troubleshooting Multilayer Switching	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. Giving yourself credit for an answer you correctly guess skews your self-assessment results and might give you a false sense of security.

1.	Which of the following arrangements can be considered InterVLAN routing? One switch, two VLANs, one connection to a router One switch, two VLANs, two connections to a router Two switches, two VLANs, two connections to a router All of the above
2.	How many interfaces are needed in a "router on a stick" implementation for InterVLAN routing among four VLANs? 1 2 4 Cannot be determined
3.	Which of the following commands configures a switch port for Layer 2 operation? switchport no switchport ip address 192.168.199.1 255.255.255.0 no ip address
4.	Which of the following commands configures a switch port for Layer 3 operation? switchport no switchport ip address 192.168.199.1 255.255.255.0 no ip address
5.	Which one of the following interfaces is an SVI? interface fastethernet 0/1 interface gigabit 0/1 interface vlan 1 interface svi 1
6.	What information must be learned before CEF can forward packets? The source and destination of the first packet in a traffic flow The MAC addresses of both the source and destination The contents of the routing table The outbound port of the first packet in a flow
7.	Which of the following best defines an adjacency? Two switches connected by a common link Two contiguous routes in the FIB Two multilayer switches connected by a common link The MAC address of a host is known
8.	Assume that CEF is active on a switch. What happens to a packet that arrives needing fragmentation? The packet is switched by CEF and kept intact. The packet is fragmented by CEF. The packet is dropped. The packet is sent to the Layer 3 engine.
9.	Suppose that a host sends a packet to a destination IP address and that the CEF-based switch does not yet have a valid MAC address for the destination. How is the ARP entry (MAC address) of the next-hop destination in the FIB obtained? The sending host must send an ARP request for it. The Layer 3 forwarding engine (CEF hardware) must send an ARP request for it. CEF must wait until the Layer 3 engine sends an ARP request for it. All packets to the destination are dropped.
10.	During a packet rewrite, what happens to the source MAC address? There is no change. It is changed to the destination MAC address. It is changed to the MAC address of the outbound Layer 3 switch interface. It is changed to the MAC address of the next-hop destination.
11.	What Spanning Tree Protocol is used for fallback bridging? 802.1D IBM STP PVST+ VLAN-bridge
12.	What command can you use to view the CEF FIB table contents? show fib show ip cef fib show ip cef show fib-table

You can find the answers to the "Do I Know This Already?" 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:

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

• 11 or 12 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 to Chapter 14, "Router Redundancy and Load Balancing."