By Wendell Odom

Solid ebook effortless to read..only factor is it's lacking a CD...still anticipating it...

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Additional info for CCNA INTRO Exam Certification Guide (CCNA Self-Study, 640-821, 640-801)

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The encapsulated protocol and data is carried as data in the encapsulating protocol. 00 7:05 AM Page 14 Chapter 1 • General Network Overview and the encapsulated protocol and its data are processed as normal. This technology is used to reduce the number of networks deployed with different protocols. Common examples include the following: ■ ■ ■ Tunneling serial network traffic in a packet-switched IP network Tunneling a nonroutable protocol inside a routable protocol Tunneling an IPX or some other protocol through an IP network or link Tunneling can eliminate the need for separate serial and IP networks.

During the boot process, after the IOS is loaded, the router will look for its current configuration, which is stored in the router’s NVRAM. If a configuration file is found, it will load this to RAM as well. The router’s central processing unit (CPU) is the “brain” that uses the IOS and configuration to process the bits through the router. Configuration changes take place immediately on a Cisco router. When changes are made, they are made to the running image. This is the image currently in RAM.

0. 2 Cisco Access List Numbers Number ACL Type 1–99 IP Standard Access List 100–199 IP Extended Access List 200–299 Protocol Type-Code Access List 300–399 DECnet Access List 400–499 XNS Standard Access List 500–599 XNS Extended Access List 600–699 AppleTalk Access List 700–799 48-bit MAC Address Access List 800–899 IPX Standard Access List 900–999 IPX Extended Access List 1000–1099 IPX SAP Access List 1100–1199 Extended 48-bit MAC Address Access List 1200–1299 IPX Summary Address (NLSP) Access List 1300–1999 IP Standard Access List (expanded range) 2000–2699 IP Extended Access List (expanded range) Key Concept Memorize the ACL numbers!

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CCNA INTRO Exam Certification Guide (CCNA Self-Study, by Wendell Odom
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