Operating Systems Concepts 1/e Ruth Watson Chapter 11 Chapter 11 Network Maintenance Ruth Watson.

Operating Systems Concepts 1/e Ruth Watson Chapter 11

Chapter 11

Network Maintenance

Ruth Watson

Operating Systems Concepts 1/e Ruth Watson Chapter 11 2

Objectives (1 of 2)

Explain the importance of a Disaster

Recovery Plan

Describe a backup rotation scheme

Demonstrate how to boot a computer into

safe mode

Explain the role of services

Explain the role of service packs


Objectives (2 of 2)

Explain the difference between a static and

a dynamic IP address

Explain what the DHCP service does

Demonstrate how to use TCP/IP

troubleshooting tools PING and TRACERT

Explain what the DNS service does


Introduction

Maintaining the network is the primary

role of a Network Administrator

Troubleshooting and monitoring

resources is key


Important Terms to Understand

APIPA

DoS attack

DHCP

IANA

IPCONFIG

NETSTAT

PING

TCP/IP

TRACERT


Tricks of the Trade - Server Backups Disaster Recover Plan

Outlines a procedure in

the event of a network

failure

Weekly Backups

Daily incremental

backups


Tricks of the Trade - Services

Automatic

Manual


Tricks of the Trade - Service Packs


Tricks of the Trade - Miscellaneous Monitor processes

Use the task Manager

Install Anti-Virus

Update Anti-Virus

Install Utilities


Configuring and Testing IP Addresses

Computers must be

configured to access the

Internet

A unique IP address must be

assigned to every device on

the Internet

A Network Administrator

must configure computers to

use the IP addresses


Static IP Addresses

Assigning IP addresses

statically is the hard way

Network Administrators

must key in: The IP Address

The Subnet Mask

The default Gateway

The DNS


Dynamic IP Addresses

Letting the operating system

automatically configure IP

addresses is much easier

The dynamic host

configuration protocol

(DHCP) service allows you to

enter a range of IP

addresses to obtain


Troubleshoot IP Problems - IPCONFIG

IPCONFIG: Type at command prompt

or at Run to determine

your IP address


Troubleshoot IP Problems - APIPA

APIPA: Automatic private IP

addressing

Enables clients to

communicate on a LAN

without Internet access


Troubleshoot IP Problems - Ping

Ping If you cannot access the Internet, try a Ping

When you Ping, you send something like an echo to the address The echo travels there and back If you do not get a reply, something is wrong with the NIC card or

TCP/IUP stack


DNS Problems - TRACERT

TRACERT Trace Route Utility

Bounces and echo to

the destination

Shows every router

along the way


DNS Problems - Hostname

HOSTNAME Gives you information about

yourself

Tells you the host name of the

computer you are running


DNS Problems - NETSTAT

NETSTAT Lets you know what

communication ports on

your computer are in use

and who is using them

Communication ports

range from 0 – to 1024

Ports 135 and 139 are

used by Windows


Summary Maintaining a network takes a lot of work and time. Maintenance includes:

Backup schedules Repairs Services Downloading Installing Troubleshooting

Try to troubleshoot connections problems via: PING and TRACERT

Check current IP address via: IPCONFIG


Questions?

Operating Systems Concepts 1/e Ruth Watson Chapter 11 Chapter 11 Network Maintenance Ruth Watson.

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