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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
Operating Systems Concepts 1/e Ruth Watson Chapter 11 3
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
Operating Systems Concepts 1/e Ruth Watson Chapter 11 4
Introduction
Maintaining the network is the primary
role of a Network Administrator
Troubleshooting and monitoring
resources is key
Operating Systems Concepts 1/e Ruth Watson Chapter 11 5
Important Terms to Understand
APIPA
DoS attack
DHCP
IANA
IPCONFIG
NETSTAT
PING
TCP/IP
TRACERT
Operating Systems Concepts 1/e Ruth Watson Chapter 11 6
Tricks of the Trade - Server Backups Disaster Recover Plan
Outlines a procedure in
the event of a network
failure
Weekly Backups
Daily incremental
backups
Operating Systems Concepts 1/e Ruth Watson Chapter 11 7
Tricks of the Trade - Services
Automatic
Manual
Operating Systems Concepts 1/e Ruth Watson Chapter 11 8
Tricks of the Trade - Service Packs
Operating Systems Concepts 1/e Ruth Watson Chapter 11 9
Tricks of the Trade - Miscellaneous Monitor processes
Use the task Manager
Install Anti-Virus
Update Anti-Virus
Install Utilities
Operating Systems Concepts 1/e Ruth Watson Chapter 11 10
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
Operating Systems Concepts 1/e Ruth Watson Chapter 11 11
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
Operating Systems Concepts 1/e Ruth Watson Chapter 11 12
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
Operating Systems Concepts 1/e Ruth Watson Chapter 11 13
Troubleshoot IP Problems - IPCONFIG
IPCONFIG: Type at command prompt
or at Run to determine
your IP address
Operating Systems Concepts 1/e Ruth Watson Chapter 11 14
Troubleshoot IP Problems - APIPA
APIPA: Automatic private IP
addressing
Enables clients to
communicate on a LAN
without Internet access
Operating Systems Concepts 1/e Ruth Watson Chapter 11 15
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
Operating Systems Concepts 1/e Ruth Watson Chapter 11 16
DNS Problems - TRACERT
TRACERT Trace Route Utility
Bounces and echo to
the destination
Shows every router
along the way
Operating Systems Concepts 1/e Ruth Watson Chapter 11 17
DNS Problems - Hostname
HOSTNAME Gives you information about
yourself
Tells you the host name of the
computer you are running
Operating Systems Concepts 1/e Ruth Watson Chapter 11 18
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
Operating Systems Concepts 1/e Ruth Watson Chapter 11 19
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
Operating Systems Concepts 1/e Ruth Watson Chapter 11 20
Questions?
