Download Introduction to Network Operating Systems (NOSs)

Content of This Topic
The sections in this topic are:
 Introduction to NOSs.
 The configuration of Linux and Windows
This topic will guide students to:
NT operating systems.
 Resolving technical problems found in
 Distinguish the functions between an
NOSs.
operating system and a network operating
system.
Specific Achievement Objectives
 Identify the features of Linux/Unix, Novell
Netware and Windows NT.
 Create, delete and rename a user in
Introduction to Network Operating
Systems (NOSs)
Windows NT.
 Create, edit and delete a Linux User
Account.
 Map a network drive on a Windows NT
At the end of this section, students will be able
to:
(a)
workstation.
operating system and a network operating
 Add and change security rights in
Windows NT.
Distinguish the functions between an
system.
(b)
 Resolve technical problems found in
Identify the features of Linux/Unix,
Novell Netware and Windows NT:
Network Operating Systems (NOS).
Novell Netware:
Expected Prior Knowledge
workstation management support;
Native TCP/IP protocol support;
 Be able to operate a network operating
NDS;
system such as Windows NT.
Interoperability;
 Be able to surf on the Web.
Command-line based/Graphical
User Interface
Suggested Teaching Duration
Windows NT:
Familiar Interface;
 5 periods
Including Internet server suite;
Interoperability;
Graphical User Interface
Linux/Unix:
Command-line based/Graphical
User Interface;
3.3 - 1
Open source code (Linux) ;
Network for TCP/IP;
A full suite of applications
The configuration of Linux
Windows NT operating systems
and
The assessment of this topic is based on
At the end of this section, students will be able
students'
to:
problems related to network operating system.
(a)
(b)
(c)
ability
of
resolving
technical
Create, delete and rename a user in
Students are required to surf a technical support
Windows NT.
web site and find solutions for a problem. In
Create, edit and delete a Linux User
addition, they need to answer some specific
Account.
questions if they want to obtain a credit or
Map a network drive on a Windows NT
distinction.
workstation.
(d)
Add and change security rights in
Pass
Windows NT.
An article with a specific ID is given. In order
Resolving technical problems found in
NOSs
to achieve a pass, students need to define the
At the end of this section, students will be able
Merit
problem and state the solutions for it.
to:
(e)
Resolve technical problems found in
In order to achieve a merit, students need to
NOSs on the Internet.
define a problem found in a Windows 2000
server and provide a solution for it. In addition,
students need to describe the ways of searching
in a specific Web site.
Distinction
In order to achieve a distinction, students need
to compare two technical support web sites and
compare their differences apart from fulfilling
the above requirements.
3.3 - 2
3.3.3
This topic introduces the basic features of most
popular Network Operating Systems.
addition,
configuring user
accounts
3.3.3a
In
Teachers run the simulation programs, to
and
demonstrate how to create, edit and delete user
network drives on the Windows NT and Linux
accounts in the Linux environment.
Then
servers will also be taught.
students run those simulation programs to
familiarize the procedures for managing user
accounts
and
answer
questions
on
the
worksheets.
3.3.1
Students need to surf on the Internet to compare
an operating system (e.g. Windows 98) and a
3.3.4
network operating system - NOS (e.g.
Windows 2000 server). Moreover, they should
Teachers demonstrate how to map a network
surf to most major NOS developers' websites to
drive and students follow teachers' procedures
find out the features of those NOSs.
to repeat the mapping. Questions will be added
As
students may not be able to find all the features
of each NOS,
to test students' understanding.
teachers should discuss the
features that students have found or missed
finally.
3.3.5
Teachers illustrate some scenes related to
3.3.2
3.3.2a
Teachers should demonstrate how to add, edit
security control to students and let them get
familiarized with what security control can be
set on files and directories to different users.
and delete user accounts in the Windows NT
environment. Then students run the simulation
program to have practices and answer questions
on the worksheets.
3.3
Through the resources on the Internet, students
should demonstrate how to resolve some
technical problems.
3.3 - 3
No program is perfect. There are some minor
bugs in most programs. A service pack is not a
new program but is used for fixing bugs and
enhancing the functionalities of the system. Up
till August 2000, the Microsoft Corporation has
released the sixth services pack for the
1. What does FAQs mean?
Windows NT 4.0 server.
FAQs stands for Frequently Asked Questions.
5. What are the differences among FAT,
FAT32 and NTFS?
Most technical support web sites have a section
called FAQs for users to find answers of most
frequently asked questions.
FAT stands for File Allocation Table. This file
system is used by MS-DOS. The FAT filenames
2. What is the purpose of a user login
script?
can only be up to 8 characters with a period
A user login script is a group of command lines.
The FAT32 file system is a newer version of the
When a user logs into the network, those
FAT which supports smaller cluster sizes for
command lines will be executed to set a specific
better hard-drive storage and long filenames
environment for that user. For example, typing
up to 255 characters.
and 3 character extension.
"net use x: \\WINNT\NTDirectory" in the login
script will map a network drive when the user
NTFS stands for New Technology File System.
login.
This supports file compression, fault tolerance
schemes, security and hard-drive partitions up
3. What does NDS mean?
to 16 gigabytes but can only be used in the
Windows NT environments.
NDS stands for Novell Directory Services. All
things in the Novell network including users
6. What is MMC?
and devices will be treated as objects. All these
means
Microsoft
Management
objects will be under a main directory (called a
MMC
tree). It is easy for the administrator to manage
Console. This is a tool that standardized
the interface of the administrative tools in
the Windows NT server.
the objects centrally. Branches can also be
created to place objects into different groups
(branches).
The administrator can apply
different polices to different groups.
7. What is ERD?
4. What is the purpose of a services
pack?
A Emergency Repair Disk (ERD) contains
critical system files and system configuration
3.3 - 4
that can be used to restore the corrupted
Windows NT system.
3.3 - 5
3.3.1(Page 1)
Time allowed: 40 minutes
Description
 Surf the web site of the Microsoft Corporation in HK.(http://www.microsoft.com/hk/windows)
 Complete the given tables to distinguish the functions between a Windows 98 and a Windows 2000
server.
 Get access to the Internet to find out the features of the following Network Operating Systems
(NOSs):

Unix/Linux (http://www.redhat.com/products)

Novell Netware (http://www.novell.com/products/netware)

Microsoft Windows NT (http://www.microsoft.com/hk/windows2000)

Discuss the features of these NOSs with your teacher.
3.3 - 6
3.3.1(Page 2)
Name: ___________________________________
Class: ________________________(__________)
Date: ____________________________________
1.
Complete the tables shown below:
Operating System
(e.g. Windows 98)
Network Operating
System (NOS)
(e.g. Windows 2000 server)
No. of CPU support
The size of Memory
support
Disk quotas? (Y/N)
Centralized Desktop
Management? (Y/N)
Encrypted Network
Communications?
(Y/N)
Applying group
policy? (Y/N)
Windows NT
Features
1)
2)
3)
Novell Netware
1)
2)
3)
Linux/Unix
1)
2)
3)
3.3 - 7
3.3.2(Page 1)
Time allowed: 40 minutes
Description
Create an account
 Run the simulation programs (for reference)
 Follow the sequences below to launch User Manager for Domains:


Start  Programs  Administrative Tools  User Manager for Domains
Click the user menu and choose the "New User" option from the menu
 Create three user accounts based on the information given below:
1.
An account for all Form 4 students
2.
An account for a Mathematics teacher called Mr. Yu Lok Tin
3.
An account for a temporary clerk called Ms. Mo Siu Wai
 Discuss the settings with your teacher
Delete an account
 Follow the sequences below to launch User Manager for Domains:

Start  Programs  Administrative Tools  User Manager for Domains
 Select the user that will be deleted
 Go to the User menu
 Choose the delete option
Rename an account
 Follow the sequences below to launch User Manager for Domains:

Start  Programs  Administrative Tools  User Manager for Domains
 Suppose the Mathematics teacher leaves the school and a new teacher called Mr. James Ho replaces
his duty.
 Click the user that should be renamed
 Go to the User menu
 Choose the rename option and configure the account
 Answer the questions on the worksheets
3.3 - 8
3.3.2(Page 2)
Name: ___________________________________
Class: ________________________(__________)
Date: ____________________________________
1. What boxes should be checked for the Form 4 student account?
___________________________________________________________________________
2. Name four properties that can be configured for a user account.
___________________________________________________________________________
3. What will happen when you try to delete a user account?
___________________________________________________________________________
4. It is observed that for certain users, the "Account is disabled" check box is selected. Please
give a reason.
___________________________________________________________________________
5. Give two situations that you need to rename an account.
___________________________________________________________________________
___________________________________________________________________________
3.3 - 9
3.3.3(Page 1)
Time allowed: 40 minutes
Description
Create an account
 Run the simulation program
 Type "finger linuxuser"
 Type "useradd -m linuxuser"
("-m" option is added for creating the home directory and mail box for the new user)
 Type "passwd linuxuser"
 Enter the information required
Change the login name
 Run the simulation program
 Type "usermod -l linux_user linuxuser"
 Type "finger linuxuser"
 Type "finger linux_user"
Delete an account
 Run the simulation program
 Type "userdel -r linux_user"
 Type "finger linux_user"
 Answer the questions on the worksheets
3.3 - 10
3.3.3(Page 2)
Name: ___________________________________
Class: ________________________(__________)
Date: ____________________________________
Create an account
1.
Who has the right to add a user account?
__________________________________________________________________________________
2.
What message can you see after typing "finger linuxuser"?
__________________________________________________________________________________
3.
What is the function of "passwd"?
__________________________________________________________________________________
Change the login name
4.
Write down the full syntax of "usermod -l"
__________________________________________________________________________________
5.
What message can you see after typing "finger linuxuser"? Please explain why the messages
appear.
__________________________________________________________________________________
__________________________________________________________________________________
Delete an account
6.
What is the purpose of the "-r" option?
__________________________________________________________________________________
7.
Please state one advantage and one disadvantage of using command-line based interface.
__________________________________________________________________________________
__________________________________________________________________________________
3.3 - 11
3.3.4(Page 1)
Time allowed: 40 minutes
Description
Map a network drive
 Right-click the "Network Neighbourhood" icon on the Desktop
 Choose the "Map A Network Drive" option
 Select drive letter X: for the drive mapping
 Type a path similar to the format shown below
\\Computer_Name\Directory
 Click OK
Verify the network drive
 Follow the sequences shown below:

Start --> Shutdown --> Close all programs and log in as a different user
 Double-click the "My Computer" icon on the Desktop
 Check whether there is an icon for Drive X: or not
Disconnect the network drive
 Right-click the "Network Neighbourhood" icon on the Desktop
 Select the network drive that you want to disconnect it
 Double-click the "My Computer" icon on the Desktop
 Check whether there is an icon for Drive X: or not
Map and disconnect a network drive in MS-DOS prompt
 Follow the sequences shown below:

Start --> Program --> DOS Prompt
 Type a path similar to the format shown below
 Net Use X: \\Computer_Name\Directory
 Type "X:" to check whether X: drive exists or not
 Type "Net Use X: /delete" to disconnect the X: drive
 Check whether there is an icon for Drive X:
 Answer the questions on the worksheets
3.3 - 12
3.3.4(Page 2)
Name: ___________________________________
Class: ________________________(__________)
Date: ____________________________________
1.
What is/are the advantage(s) of mapping a network drive?
__________________________________________________________________________________
__________________________________________________________________________________
2.
Write down the command text to connect the "Mapping" folder in a computer called "Sharing".
__________________________________________________________________________________
__________________________________________________________________________________
3.
What is the significance of the drive letter?
__________________________________________________________________________________
__________________________________________________________________________________
3.3 - 13
3.3.5 (Page 1)
Time allowed: 40 minutes
Description
 Students view the file access and the directory access rights.
 Students answer the questions on the worksheets.
3.3 - 14
3.3.5 (Page 2)
Name: ___________________________________
Class: ________________________(__________)
Date: ____________________________________
1.
Give reason(s) for controlling security of files and directories.
__________________________________________________________________________________
__________________________________________________________________________________
2.
From the above diagram, what are the advantages of providing "Replace permissions on
subdirectories" and "Replace permissions on existing files" check boxes?
__________________________________________________________________________________
__________________________________________________________________________________
3.3 - 15
3.3.5(Page 3)
Name: ___________________________________
Class: ________________________(__________)
Date: ____________________________________
3.
From the above diagram, what types of access to the file system can you configure?
__________________________________________________________________________________
__________________________________________________________________________________
4.
What types of access rights to the file system will you grant to a guest user? Please explain your
choices.
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
3.3 - 16
3.3(Page 1)
Time expected: 1 week
Description
 Students surf a technical support web site (http://support.microsoft.com)
[For getting a "Pass"]
 Students find out the symptoms and suggest a solution for a problem stated in an article (its article
number is "Q263108")
[For getting a "Credit" or "Distinction"]
 A problem was found when "Nero CD-Recording" software was installed on a Windows 2000
server. Please find out the symptoms and provide a solution for it. In addition, answer the rest of
the questions.
3.3 - 17
3.3(Page 2)
Name: ____________________________________
Class: _________________________(__________)
Date: _____________________________________
Pass
1.
What is/are the symptom(s) found in the Q263108 article?
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
2.
What is the solution for the above symptoms?
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
Credit or Distinction
1.
What is/are the symptoms found when "Nero CD-Recording software" is installed on a Windows
2000 server?
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
2.
What is the solution for the above symptoms?
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
3.3 - 18
3.3(Page 3)
3.
Describe the ways of searching which can be found in this website and suggest one more way.
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
4.
Surf http://www.redhat.com/apps/support. Compare the technical support website that you have
just visited. Which one is better? Please justify your choice.
[for getting a "distinction" ]
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
__________________________________________________________________________________
3.3 - 19
Network Operating Systems
Introduction to Network Operating Systems (NOSs)
NOS
Network Operating System (NOS) is a combination of programs that give some computers and peripherals the
ability to accept requests for service across the network and give other computers the ability to correctly use those
services. The networking software in servers provides and controls multiple simultaneous accesses to network
resources. The networking software in client workstations intercepts and redirects the requests for service that
application programs generate, and sends each of them to the appropriate server for action.
Windows NT
This is a network operating system developed by the Microsoft Company. Its graphical interface is similar to
Windows 98.
Windows 2000
This is a new version of Windows NT and its main features include “Active Directory” and support USB devices.
Linux
This is a version of Unix system developed by Linus Torvalds but runs on Intel-based PCs.
Netware
This is a NOS developed by Novell. It includes a multiprocessing kernel and uses TCP/IP in its pure form in the
latest version.
Interoperability
The software or hardware parts of a computer system can work in different environments such as Windows,
Novell Netware and Linux.
Reference URLs:
http://www.cit.ac.nz/smac/winnt/default.htm Networking Windows NT Server
http://www.support.Microsoft.com Microsoft customer support for Windows NT users.
3.3 - 20