CCNA Study Guide

Study Schedule for Todd Lammle's CCNA Study Guide 24 Weeks - 1 Topic per week To be completed by August 11th Schedule CCNA Exam for August 18th (for the entire one) or the 18th and 25th for Parts 1 & 2.   Part 1 Chapter 1 - Internetworking Chapter 2 - Ethernet NEtworking and Data Encapsulation Chapter 3 - Introduction to TCP/IP Chapter 4 - Easy Subnetting Chapter 5 - VLSMs, Summarization, and Troubleshooting TCP/IP Chapter 6 - Cisco Internetworking Operating Systems (IOS) Chapter 7 - Managing a Cisco Internetwork Chapter 8 - Managing Cisco Devices Chapter 9 - IP Routing Chapter 10 - Laying 2 Switching Chapter 11 - VLANs and Inter-VLAN Routing Chapter 12 - Security Chapter 13 - Network Address Translation (NAT) Chapter 14 - Internet Protocol Version 6 (IPv6) Part 2 Chapter 15 - Enhanced Switched Technologies  Chapter 16 - Network Device Management and Security Chapter 17 - Enhanced IGRP Chapter 18 - Open Shortest Path First (OSPF) Chapter 19 - Multi-Area OSPF Chapter 20 - Troubleshooting IP, IPv6, and VLANs Chapter 21 - Wide Area Networks Chapter 22 - Evolution of Intelligent Networks Part 3  Test Review Lab Review Hands-on Cisco Experience    

Chapter 1 - Internetworking Basics Notes Switches vs Routers Switches create separate collision domains within a single broadcast domain Might be referred to as a multiport bridge (But actually, have advanced management abilities and features and way more ports) Break up collision domains on a LAN Bridges serve as a way to reduce collisions with broadcast domains and to increase the number of collision domains in your network. This provides more bandwidth for users. Using hubs in an Ethernet network can contribute to congestion. Bridges/switches are used to segment networks, but they will not isolate broadcast or multicast packets. Routers provide a separate broadcast domain for each interface. Routers break up broadcast domains for every LAN interface. They also break up collision domains. The OSI Reference Model ISO (International Organization for Standardization) created the OSI (Open Systems Interconnection, model). Cisco created the IOS (Internetworking Operating System)  7 Layers (Mnemonic for the 7 layers: All People Seem To Need Data Processing) The upper layers Application - provides a user interface File, print, message, database, and application services Presentation - Presents data and handles processing such as encryption Data encryption, compression, and translation services Session - Keeps different application' data separate  Dialog control The lower layers Transport - Provides reliable or unreliable delivery and perform error correction before transit End-to-end connection Network - Provides logical addressing, which routers use for path determination Routing Data Link - Combines packets into bytes and bytes into frames, provides access to media using MAC address, and performs error detection, not correction. Framing Physical - Moves bits between devices and specifies voltage, wire speed, and pinout of cables Physical topology The Application Layer File Transfers, email, enabling remote access, network management activities, client/server processes, information location. The application layer works as the interface between actual application programs. End user programs, like Microsoft Word, don't reside in the application layer, they interface with the Application layer protocols. The Presentation Layer By providing translation services, the Presentation layer ensures that data transferred from the Application layer of one system can be read by the Application layer of another system. OSI (Open Systems Interconnection, model) has protocols that define how standard data should be transferred. The Session Layer Responsible for setting up, managing, and dismantling sessions between Presentation layer entities and keeping user data separate.  Communication between the hosts' various applications at the Session layer, as from a client to a server, is organized via three different modes: Simplex (Only one way) Half- duplex (Radio, one way at a time) Full-duplex (Both ways at the same time) The Transport Layer Layers segments and assembles data into a single data stream. Receives data from the upper layer applications, then combines it into the same, concise data stream. TCP and UDP are found in this layer, TCP is known as reliable and UDP is not. The term reliable networking can be used at the Transport layer. Reliable networking requires that acknowledgment, sequencing, and flow control will all be used. Connection-Oriented Communication Establish a connection-oriented communication session (Call setup or three-way handshake). SYNC (Synchronization) ACK (Acknowledgement) ACK (Acknowledgement) Data transfer Call termination tears down the virtual circuit This type of virtual circuit setup is often referred to as Overhead Flow Control Ensures data integrity at the Transport layer by allowing applications to request reliable data transport between systems. The purpose of flow control is to provide a way for the receiving device to...