Operating Systems I
Networking
MCT260-Operating Systems I
Primary Learning Objective
Access Resources on a Network
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Specific Learning Objectives
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Identify and define the terms associated with
networking
Log on and off a computer
Browse the network
Use the Universal Naming Convention (UNC)
Map a network drive
Use CLI commands associated with accessing
resources on a network
Connect to a network printer
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Network
• Group of computers and other devices
connected by some type of transmission
media (cables, fiber, or wireless)
• Networks enable users to share devices,
software, and information (data); collectively
called a network’s resources
• Two basic types:
– Local Area Network (LAN)
– Wide Area Network (WAN)
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Networks
• A LAN is a network of computers and
other devices confined to relatively small
space. The two subtypes are peer-to-
peer and client/server
• A WAN is a network that spans large
distance and connects two or more LANs
– The Internet is an example of a very
intricate and extensive WAN that spans the
globe
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Wide Area Network (WAN)
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Peer-to-Peer Network
A small number of computers communicate on
single segment of cable and share each other’s
data and devices. Inexpensive and easy to setup.
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Client/Server
• Special computers (known as servers) process
data for and facilitate communication
between other computers on the network
(known as clients)
• Networking model in which clients use
central server to share applications, devices,
and data
• Clients request resources
• Servers provide resources
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Client/Server Network
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Client/Server Advantages
• Centralized Administration:
– Only requires one user login account and password
– Access to multiple shared resources is better
controlled
• Better security
• Servers are optimized to handle heavy
processing loads
• Servers can connect more many more computers
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Logging On
• Press <Ctrl> + <Alt> + <Delete>
• Enter user name, password, and domain
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Logging Off
• Why log off?
– To secure your computer from unauthorized
access
– You share the same computer with another user
– To gain administrative rights to a shared folder
or printer
• Use Start > Log Off > Really Log Off
• Occasionally you have to use Shut Down then
select Log Off UserName (Table 6-2 on Page
177)
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Shutting Down
• Shutting down gives Windows a chance to save
information in the computer’s memory to the
local disk, cleaning up temporary files, and save
changes to the Registry and to your profile.
• Use Start > Shut Down > OK then turn off the
computer when it says it safe to do so.
• See Table 6-2 on Page 177
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Browsing the Network
• Makes it easy to look for resources on the
network but isn’t foolproof. Sometimes it
appears that the resource isn’t available
when it can still be accessed by mapping.
• Select My Network Places, click Entire
network, Microsoft Network, the domain,
the server, and then the shared resource
(folder or printer)
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Universal Naming Convention (UNC)
• Network resources on a Microsoft network
have a common naming convention which is
called the UNC .
• The UNC consists of two main parts:
ServerName and ShareName.
• The UNC is seen in the form of:
\\servername\sharename
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UNC Examples
• The ServerName can be the server name,
the fully qualified domain name, or the IP
address. These are all the same server.
\\cotweb3\schedules
\\cotweb3.mccneb.edu\ schedules
\\10.5.1.234\ schedules
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Temporary Connection To A Resource
• Click the Start button and select Run from the
Start menu.
• Type the UNC in the Run dialog box.
• The resource should open, if you are logged in
as someone without permissions for the resource
you will receive a "challenge box" that allows
you to input your correct domain\username.
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Challenge Box
Note that the user name
Includes the domain
name also.
DomainName\UserName
It’s not a good idea to
check the “remember my
password” check box
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Mapping a Resource
• Used if you frequently access a specific network
folder.
• To map a network folder, you assign it a drive
letter, like (J:), so that it appears as a drive in
My Computer, Windows Explorer, and in your
programs Open and Save dialog boxes.
• Much faster than having to browse through the
network again and again to find it.
• Use My Network Places, My Computer, CLI, or
Windows Explorer to map a drive.
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Mapping a Resource
Use the Tools menu in Explorer/My Computer
or right-click My Computer or My Network
Places & select “Map Network Drive”
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NET Commands
• NET CONFIG, NET DIAG, NET HELP, NET
INIT, NET LOGOFF, NET LOGON, NET
PASSWORD, NET PRINT, NET START, NET
STOP, NET TIME, NET USE, NET VER, and
NET VIEW
• To display this list with a description of each
command, type NET HELP.
• To get help with a individual command type
NET HELP <Command> or NET HELP VIEW
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Using Help with NET Commands
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NET USE (CLI Map Command)
• Connects (Maps) or disconnects your computer
from a shared resource or displays information
about your connections.
• NET USE Drive: \\ServerName\ShareName
• NET USE Z: \\SRP6\Students
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Connecting to a Network Printer
Click Add a printer . Select the Network printer
option and click Next. Select the Connect to this
printer option and click Next.
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Select Network Printer
Click the + next to the desired network domain or
workgroup Click the + next to the desired computer
or server, click the desired printer and click Next
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Summary
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Network Terms
Logging On/Off
Shutting Down
Browsing the Network
UNC
Mapping a Resource
NET Commands (NET USE)
Connecting to a Network Printer
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Homework Assignment
• Reading
– XP Textbook – pp 171-186
– UNC Handout
• Lab Exercise 11: Accessing Network
Resources
• Due Date: A Week from Next Tuesday
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