Cisco CCNA Study Guide - Router Alley

1 ccna Study Guide Aaron Balchunas * * * All original material copyright 2014 by Aaron Balchunas unless otherwise noted. All other material copyright of their respective owners. This material may be copied and used freely, but may not be altered or sold without the expressed written consent of the owner of the above copyright. Updated material may be found at 1 _____ Cisco ccna Study Guide 2014 _____ Aaron Balchunas _____ Foreword: This Study Guide is intended to provide those pursuing the ccna certification with a framework of what concepts need to be studied.

2 This is not a comprehensive document containing all the secrets of the ccna , nor is it a braindump of questions and answers. This document is freely given, and can be freely distributed. However, the contents of this document cannot be altered, without my written consent. Nor can this document be sold or published without my expressed consent. I sincerely hope that this document provides some assistance and clarity in your studies. _____ ccna Study Guide Aaron Balchunas * * * All original material copyright 2014 by Aaron Balchunas unless otherwise noted.

3 All other material copyright of their respective owners. This material may be copied and used freely, but may not be altered or sold without the expressed written consent of the owner of the above copyright. Updated material may be found at 2 Table of Contents Part I General Networking Concepts Section 1 Introduction to Networking Section 2 OSI Reference Model Section 3 Ethernet Technologies Section 4 Hubs vs. Switches vs. Routers Section 5 STP Section 6 IPv4 Addressing and Subnetting Section 7 TCP and UDP Section 8 IPv6 Addressing Section 9 Introduction to Wireless Part II The Cisco IOS Section 10 Router Components Section 11 Introduction to the Cisco IOS Section 12 Advanced IOS Functions Part III - Routing Section 13 The Routing Table Section 14 Static vs.

4 Dynamic Routing Section 15 Classful vs. Classless Routing Section 16 Configuring Static Routes Section 17 RIPv1 & RIPv2 Section 18 IGRP Section 19 EIGRP Section 20 OSPF Part IV VLANs, Access-Lists, and Services Section 21 VLANs and VTP Section 22 Access-Lists Section 23 DNS and DHCP Part V - WANs Section 24 Basic WAN Concepts Section 25 PPP Section 26 Frame-Relay Section 27 NAT ccna Study Guide Aaron Balchunas * * * All original material copyright 2014 by Aaron Balchunas unless otherwise noted.

5 All other material copyright of their respective owners. This material may be copied and used freely, but may not be altered or sold without the expressed written consent of the owner of the above copyright. Updated material may be found at 3 _____ Part I General Networking Concepts _____ ccna Study Guide Aaron Balchunas * * * All original material copyright 2014 by Aaron Balchunas unless otherwise noted. All other material copyright of their respective owners. This material may be copied and used freely, but may not be altered or sold without the expressed written consent of the owner of the above copyright.

6 Updated material may be found at 4 Section 1 - Introduction to Networks - What is a Network? network is simply defined as something that connects things together for a specific purpose. The term network is used in a variety of contexts, including telephone, television, computer, or even people networks. A computer network connects two or more devices together to share a nearly limitless range of information and services, including: Documents Email and messaging Websites Databases Music Printers and faxes Telephony and videoconferencing Protocols are rules that govern how devices communicate and share information across a network.

7 Examples of protocols include: IP Internet Protocol HTTP - Hyper Text Transfer Protocol SMTP Simple Mail Transfer Protocol Multiple protocols often work together to facilitate end-to-end network communication, forming protocol suites or stacks. Protocols are covered in great detail in other guides. Network reference models were developed to allow products from different manufacturers to interoperate on a network. A network reference model serves as a blueprint, detailing standards for how protocol communication should occur.

8 The Open Systems Interconnect (OSI) and Department of Defense (DoD) models are the most widely recognized reference models. Both are covered in great detail in another Guide . ccna Study Guide Aaron Balchunas * * * All original material copyright 2014 by Aaron Balchunas unless otherwise noted. All other material copyright of their respective owners. This material may be copied and used freely, but may not be altered or sold without the expressed written consent of the owner of the above copyright.

9 Updated material may be found at 5 Basic Network Types Network types are often defined by function or size. The two most common categories of networks are: LANs (Local Area Networks) WANs (Wide Area Networks) A LAN is generally a high-speed network that covers a small geographic area, usually contained within a single building or campus. A LAN is usually under the administrative control of a single organization. Ethernet is the most common LAN technology. A WAN can be defined one of two ways. The book definition of a WAN is a network that spans large geographical locations, usually to connect multiple LANs.

10 This is a general definition, and not always accurate. A more practical definition of a WAN is a network that traverses a public or commercial carrier, using one of several WAN technologies. A WAN is often under the administrative control of several organizations (or providers), and does not necessarily need to span large geographical distances. A MAN (Metropolitan Area Network) is another category of network, though the term is not prevalently used. A MAN is defined as a network that connects LAN s across a city-wide geographic area.