CCENT/CCNA ICND1 Official Exam Certification Guide - Chapter 8

Operating Cisco LAN Switches Thiết bị chuyển mạch LAN có thể là thiết bị kết nối mạng phổ biến nhất được tìm thấy trong các doanh nghiệp ngày nay. Người sử dụng máy tính mới nhất kết thúc bán ngày nay bao gồm một built-in Ethernet NIC của một số loại. Thiết bị chuyển mạch cung cấp một điểm kết nối cho các thiết bị Ethernet để các thiết bị mạng LAN có thể giao tiếp với nhau và với phần còn lại của một mạng doanh nghiệp hoặc với Internet. Thiết bị định tuyến Cisco cũng xảy ra...
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CCENT/CCNA ICND1 Official Exam Certification Guide - Chapter 8 1828xbook.fm Page 197 Thursday, July 26, 2007 3:10 PM 8 CHAPTER Operating Cisco LAN Switches LAN switches may be the most common networking device found in the Enterprise today. Most new end-user computers sold today include a built-in Ethernet NIC of some kind. Switches provide a connection point for the Ethernet devices so that the devices on the LAN can communicate with each other and with the rest of an Enterprise network or with the Internet. Cisco routers also happen to use the exact same user interface as the Cisco Catalyst switches described in this chapter. So, even though this chapter is called “Operating Cisco LAN Switches,” keep in mind that the user interface of Cisco routers works the same way. Chapter 13, “Operating Cisco Routers,” begins by summarizing the features covered in this chapter that also apply to routers. “Do I Know This Already?” Quiz The “Do I Know This Already?” quiz allows you to assess whether you should read the entire chapter. If you miss no more than one of these seven self-assessment questions, you might want to move ahead to the “Exam Preparation Tasks” section. Table 8-1 lists the major headings in this chapter and the “Do I Know This Already?” quiz questions covering the material in those sections. This helps you assess your knowledge of these specific areas. The answers to the “Do I Know This Already?” quiz appear in Appendix A. “Do I Know This Already?” Foundation Topics Section-to-Question Mapping Table 8-1 Foundation Topics Section Questions Accessing the Cisco Catalyst 2960 Switch CLI 1–3 Configuring Cisco IOS Software 4–7 1828xbook.fm Page 198 Thursday, July 26, 2007 3:10 PM 198 Chapter 8: Operating Cisco LAN Switches In what modes can you execute the command show mac-address-table? 1. User mode a. Enable mode b. Global configuration mode c. Setup mode d. Interface configuration mode e. In which of the following modes of the CLI could you issue a command to reboot the 2. switch? User mode a. Enable mode b. Global configuration mode c. Interface configuration mode d. Which of the following is a difference between Telnet and SSH as supported by a Cisco 3. switch? SSH encrypts the passwords used at login, but not other traffic; Telnet encrypts a. nothing. SSH encrypts all data exchange, including login passwords; Telnet encrypts b. nothing. Telnet is used from Microsoft operating systems, and SSH is used from UNIX c. and Linux operating systems. Telnet encrypts only password exchanges; SSH encrypts all data exchanges. d. What type of switch memory is used to store the configuration used by the switch when 4. it is up and working? RAM a. ROM b. Flash c. NVRAM d. Bubble e. 1828xbook.fm Page 199 Thursday, July 26, 2007 3:10 PM “Do I Know This Already?” Quiz 199 What command copies the configuration from RAM into NVRAM? 5. copy running-config tftp a. copy tftp running-config b. copy running-config start-up-config c. copy start-up-config running-config d. copy startup-config running-config e. copy running-config startup-config f. Which mode prompts the user for basic configuration information? 6. ...