Appendix A. Answers to the “Check Your Understanding” Questions
Chapter 1
1. D. Explanation: RAM stores the running IOS, running configuration file, IP routing and ARP tables, and memory buffers for various packets. ROM on the other hand stores the bootstrap instructions, basic diagnostic software, and a limited version of the IOS. NVRAM stores the startup configuration file, and Flash is used to store the IOS and other system-related files.
2. D. Explanation: The show ip interface brief command is very useful, as it displays a summary status of all configured interfaces. Specifically, it displays the IP address and Layer 1 statuses. The three other choices are not valid commands.
3. A. Explanation: The enable secret quiz command configures ...
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