NETWORK FUNDAMENTAL

Network Elements Local Area Network Wide Area Network Host, WorkStation and Server Peer-to Peer Vs Client/Server Architecture

PHYSICAL TOPOLOGY

Bus Topology Star Topology Ring Topology Mesh topology Backbones and Segments Selecting the Right Topology

PHYSICAL MEDIA

Co axial Cable Twisted Pair Cable Fiber- Optic Cable Cable Type Summary

COMMON NETWORK CONNECTIVITY DEVICES

NIC Hub Switch Bridge Router Gateways Other Devices

THE OSI MODEL

Introduction the OSI Model

THE OSI MODEL'S LOWER LAYERS

The Physical Layer The Data Link Layer

THE MODEL'S MIDDLE LAYER

The Network Layer The Transport Layer

THE OSI MODEL'S UPPER LAYER

The Session Layer The Presentation Layer The Application Layer Upper- Layer Devices

NETWORKING PROTOCOL

TCP/IP IPX/SPX NetBEUI Apple Talk and AppleTalk over IP

TCP/IP FUNDAMENTALS


Introduction TCP/IP A Brief History of TCP /IP TCP/IP Design Goals TCP/IP and the OSI Model

The Transmission Control Protocols The Internet Layer protocol

The Internet protocols Internet Control Message Protocol (ICMP) Address Resolution Protocol (ARP) and Reverse ARP (RARP) Router and Routing

THE APPLICATION LAYER PROTOCOL

Simple Network Management protocol (SNMP) File Transfer Protocol (FTP) Trivial File Transfer Protocol (TFTP) Post office Protocol (POP) Telnet Classless Inter-Domain Routing (CIDR) Virtual LANs TCP/IP Utilities Using the Address Resolution Protocols The Windows ARP Table Using the arp Utility Using the netstate Utility The -a Switch The -e Switch The -r Switch The -s Switch The -n Switch The -p Switch Using the nbtstat Utility The -a Switch The -e Switch The -r Switch The -s Switch The -A Switch The -R Switch The -S Switch Using The File Transfer Protocol Using the print Utility Using Winipcfg, Ipconfig, Using the tracer Utility Using the telnet Utility Using the nslookup utility

NETWORK OPERATING SYSTEM

Microsoft Windows features Client Support Interoperability Authentication File and Print Services Application Support Security

Unix/Linux

Features Client Support and Interoperability Authentication File and Print Services Application Security

Macintosh

Feature Client Support Interoperability Authentication File and Print Services Application Support Security

WIRED AND WIRELESS NETWORKS

Standard Operating Procedure Environmental Issues Error Messages and Log Files Current Configuration and Base line Other Documentation

Wireless Networking

Wireless Network Componets Wireless network Installation Installation type

Workstation Configuration

Configuring a windows 9x Network Configuring a windows 2000 Network client Configuring a windows clients for Netware network Access

Network Installation Tools

Wire Crimper Media Testing Tools Punch down Tool


WAN and Remote Access Technology

Remote Access connection configuration Requirement Hardware Requirments Software Requirments

Remote Access Connection Methods

The Public Switched Telephone Network (PSTN). Integrated Services Digital Network(ISDN) Other Digital Options

Remote Access Protocols

Serial Line Internet Protocol (SLIP) Point to Point Protocol (PPP) &PPPoE Pont to Point Tunneling Protocol (PPTP) Windows Remote Access Services (RAS) Remote Desktop Protocol (RDP)

NETWORK ACCESS AND SECURITY

Accessing Network Resources

Client Selection Installing the windows 95/98 and Windows NT /2000 Client Installing the Netware Client Installing the UNIX Client Selecting A Primary Client

Managing Users Account and Password Security

Network recourse sharing Security Models Managing Account Managing Passwords

Using Firewalls

Firewall Technologies Compeering Firewall O/S platforms

Understanding the defending against hacker Attacks

Hacker Tools; Common Networks attacks Intruder Detection; Defenses technique

DoD Security Standards

Trusted Computer System Trusted network Interpretation Certified O/S and Networks

Understanding Encryption

Uses for Encryption How Encryption Works Encryption Keys

Security Policies

Security Audit Clean Desk Policy Recording Equipment Other Common Security Policies Breaking policy The Exit policy

FAULT TOLERANCE AND DESASTER RECOVERY

Accessing Fault Tolerance and Disaster Recovery Needs Hot Site Warm Site Cold Site

Power Management

Surge protectors Battery Backup Systems Line Conditioners

Disk System Fault Tolerance

Disk mirroring Disk Duplexing Disk Striping Redundant Array of Inexpensive (or ndependent)Disk(RAID)

Backup Considerations

Backup Media Options Backup Utilities Backup Types Tape Rotation Schedule

Virus Protection

Types of Viruses Updating Antivirus Components Scanning For Viruses

NETWORK TROUBLESHOOTING

Narrowing Down The Problem

Did you check The Simple Stuff? Is Hardware or Software Causing the problem? Is It A Workstation or Server problem? Which Segements Of The Network Are Affected? Are There Any Cabling issues?

TroubleShooting Steps

Step1: Establish Symptoms Step2: Identify the Affected Area Step3: Establish What Has Changed Step4: Select The Most Probable Cause Step5; Implement A Solution Step6: Test The Result Step7:Recognize The Potential Effects Of The Solution Step8:Document The Solution

The Toublshooter's Resources

Log Files Manufacturers 'Troubleshooting Resources Hardware Network Troubleshooting Tools Software Troubleshooting Tools

Troubleshooting Tips

Don't Overlook The Small Stuff Prioritize Your Problems Check The Software Configuration Don't Overlook Physical Condition Don't Overlook Cable problems Check For Viruses.