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Network Operating Systems Week 9. COMPUTER PLATFORMS. Week 9. Operating System Uses Network Operating System Fundamentals Architecture Windows 2000 family Windows 2003 Windows NT 4 UNIX family Linux flavours Apple Macintosh OS Novell NetWare family. Week 10.

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computer platforms

Network Operating Systems

Week 9

COMPUTER PLATFORMS

Stuart Cunningham - Computer Platforms - 2003

week 9
Week 9
  • Operating System
    • Uses
  • Network Operating System
    • Fundamentals
    • Architecture
  • Windows 2000 family
    • Windows 2003
  • Windows NT 4
  • UNIX family
  • Linux flavours
  • Apple Macintosh OS
  • Novell NetWare family

Stuart Cunningham - Computer Platforms - 2003

week 10
Week 10

NO COMPUTER PLATFORMS

LECTURES OR LABS NEXT WEEK

1st - 5th DECEMBER

USE THE TIME TO WORK ON YOUR ASSIGNMENTS AND DO BACKGROUND READING

Stuart Cunningham - Computer Platforms - 2003

operating system
Operating System
  • Traditionally the OS is the interface between the user and the computer
  • Interact and control computer hardware
  • No capability to connect to remote computers
    • Essentially ‘stand alone’ machines

Stuart Cunningham - Computer Platforms - 2003

network operating system
Network Operating System
  • Provides network communication protocols
    • E.g.-
      • TCP/IP
      • NetBEUI / NetBIOS
      • AppleTalk
      • IPX/SPX
  • Provides interaction with network hardware
    • Network Interface Card (NIC)
    • Media access
    • Router configuration
  • Allows remote access to other computers
    • File /Application Sharing
    • Administration / Control
    • Cluster processing
    • etc.

Stuart Cunningham - Computer Platforms - 2003

network operating system1
Network Operating System
  • Hybrid NOS
    • Windows 3.11
    • Windows 95 / 98
    • Apple Mac OS 7.x
  • True NOS’s
    • UNIX
    • Novell Netware
    • Windows NT 4
      • Server and Workstation
    • Windows 2000
      • Server and Workstation
    • Windows XP
    • Mac OS X

Stuart Cunningham - Computer Platforms - 2003

nos architecture
NOS Architecture
  • Client / Server
    • Centralised file / application sharing
    • Centralised control / administration
    • One or more servers
      • File server
      • Application server
      • etc.
    • Good security
      • If correctly configured
    • Scalable
      • Add more servers / clients
    • Expensive
      • Server and workstation software
    • Select few people in charge of administration
      • Good or bad?

Stuart Cunningham - Computer Platforms - 2003

nos architecture1
NOS Architecture
  • Peer-to-peer
    • Everybody’s equal
    • No priority
    • No central control
    • Software cheap
    • Easy to set-up
      • No specialist configuration
    • Poor security
    • Suits:
      • Small Home / Office LANs
      • Networks in a single room
      • Networks with no interconnection requirements

Stuart Cunningham - Computer Platforms - 2003

windows 2000 server
Windows 2000 Server
  • IIS 5
    • Internet Information Server
      • A web server
  • VPN Server
    • Virtual Private Networking
    • Allowing remote dial-in connections
  • Active Directory
    • Central control over all shared resources and users throughout an entire network
  • Requirements
    • Intel Pentium 133 Mhz or higher
    • 256 megabytes (MB) of RAM
    • 1.0 GB hard disk space

Stuart Cunningham - Computer Platforms - 2003

windows 2000 professional
Windows 2000 Professional
  • AKA - Windows 2000 Workstation
  • Used for P2P or Client / Server
    • Client for WIN2k Server
  • Features of Win 98 + NT4
  • Support for:
    • 4Gb RAM
    • 2 Processors using SMP
      • Symmetric Multiprocessing
    • Plug ‘n’ Play
  • NTFS File System
    • Security & Sharing

Stuart Cunningham - Computer Platforms - 2003

slide11
UNIX
  • Developed by Ken Thompson & Dennis Ritchie at Bell labs / AT&T
  • Multi-user
    • More than one person suing the OS at a time
  • Multitasking
    • Each user can run more than one process
  • Platform independent
    • Runs on almost any hardware platform
  • Was free at first but now expensive
    • Especially for PC
  • Complex to understand
  • Large distribution
  • User control and administration
  • Used as multiple types of server

Stuart Cunningham - Computer Platforms - 2003

linux
Linux
  • Developed by Linus Torvalds
  • Attempt to provide functionality of UNIX in a free, easier to use form
  • Particularly aimed at PC users
  • Two parts:
    • Kernel
      • The Linux operations section
      • The UNIX part of things
    • Distribution
      • Particular flavour of Linux
  • Control and admin
    • Users can be created an deleted by an admin (root or su)
    • Users are organised into groups
  • Open source
    • Free! (more or less)
  • Many now have a windows style interface
    • Easy to get to grips with
    • Some expertise is required to become a master
  • Low hardware requirements
    • 100 MHz CPU, 12Mb RAM, 500Mb HDD

Stuart Cunningham - Computer Platforms - 2003

linux distributions
Linux Distributions
  • Lots of different flavours
  • Usually based around one main Linux Distribution
    • SuSE
    • Red Hat
      • Mandrake
      • Vine
    • Caldera
    • Debian
      • LindowsOS
      • Morphix
  • Many free and open source applications being developed

Stuart Cunningham - Computer Platforms - 2003

linux interface
Linux Interface

Stuart Cunningham - Computer Platforms - 2003

linux interface1
Linux Interface

Stuart Cunningham - Computer Platforms - 2003

linux interface2
Linux Interface

Stuart Cunningham - Computer Platforms - 2003

novell netware
Novell NetWare
  • Versions 5 and 6 most common
  • Sharing of resources
    • Novell Directory Services (NDS)
    • NDS e-directory
  • Network Services
    • Mail servers
    • Print servers
    • Etc.
  • Clients & servers
  • Often found running alongside another OS
    • Such as Windows 9x, NT, 2000
    • As a client piece of software on workstations

Stuart Cunningham - Computer Platforms - 2003

novell netware interface
Novell NetWare Interface
  • Very Windows like

Stuart Cunningham - Computer Platforms - 2003

mac os x server
Mac OS X Server
  • Developed by Apple Computers
  • Based on UNIX architecture
  • Designed to be run on Apple Xserve computer
  • File / resource sharing
    • Open directory
  • Network admin
    • Workgroup management
  • Network services
    • Mail
    • Web
    • Etc.

Stuart Cunningham - Computer Platforms - 2003

mac os x
Mac OS X
  • Developed by Apple Computers
  • Based on UNIX architecture
  • Customisable GUI
  • Can connect to other networks
    • Windows
    • Novell
    • UNIX
  • Network client software
  • SMP support

Stuart Cunningham - Computer Platforms - 2003

mac os x interface
Mac OS X Interface

Stuart Cunningham - Computer Platforms - 2003

features of a nos
Features of a NOS
  • User must logon to the computer / server
    • User name
    • Password
  • Organisation of users
  • Rights and privelages
  • Sharing of data
  • Provision of network services
  • Application services
  • Above all, communication

Stuart Cunningham - Computer Platforms - 2003

week 91
Week 9
  • Operating System
    • Uses
  • Network Operating System
    • Fundamentals
    • Architecture
  • Windows 2000 family
    • Windows 2003
  • Windows NT
  • UNIX family
  • Linux flavours
  • Apple Macintosh OS
    • MacOS X server/client
  • Novell NetWare 5 & 6 Overview

Stuart Cunningham - Computer Platforms - 2003