tailieunhanh - CCNA 1 and 2 Companion Guide, Revised (Cisco Networking Academy Program) part 4

Cisco Networking Academy Program CCNA 1 and 2 Companion Guide, Revised part 4 is the Cisco approved textbook to use alongside version of the Cisco Networking Academy Program CCNA 1 and CCNA 2 web-based courses. The topics covered provide you with the necessary knowledge to begin your preparation for the CCNA certification exam (640-801, or 640-821 and 640-811) and to enter the field of network administration. | Page xxxi Tuesday May 20 2003 2 53 PM xxxi Chapter 14 Managing Cisco IOS Software examines the stages of the router boot sequence. It also covers how to use a variety of Cisco IOS Software source options execute commands to load Cisco IOS Software onto the router maintain backup files and upgrade Cisco IOS Software. In addition this chapter discusses the functions of the configuration register and tells how to determine the version of the IOS file. Finally this chapter describes how to use a TFTP server as a software source. This chapter corresponds to the Module 5 content from the CCNA 2 online curriculum. Chapter 15 Routing and Routing Protocols covers the router s use and operations in performing the key internetworking function of the Open System Interconnection OSI reference model s network layer Layer 3. In addition this chapter discusses the difference between routing and routed protocols and tells how routers track distance between locations. Finally this chapter introduces distance vector link-state and hybrid routing approaches and details how each resolves common routing problems. This chapter corresponds to the Module 6 content from the CCNA 2 online curriculum. Chapter 16 Distance Vector Routing Protocols covers the initial configuration of the router to enable the Routing Information Protocol RIP and the Interior Gateway Routing Protocol IGRP . In addition this chapter describes how to monitor IP routing protocols. This chapter corresponds to the Module 7 content from the CCNA 2 online chapter corresponds to the Module 7 content from the CCNA 2 online curriculum. Chapter 17 TCP IP Error and Control Messages covers ICMP the ICMP message format ICMP error message types potential causes of specific ICMP error messages a variety of ICMP control messages used in networks today and the causes for ICMP control messages. This chapter corresponds to the Module 8 content from the CCNA 2 online curriculum. Chapter 18 Basic Router .