Guide to Novell NetWare 6'0 Network Administration

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Guide to Novell NetWare 6.0 Network Administration

• Chapter 1

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Chapter 1 - Networking Basics

• Explain network types (including LANs, WANs, and
  MANs) and features
• Identify and describe the hardware and software
  components that make up a local area network
• Develop a recommendation for implementing a local
  area network system
• Describe the responsibilities of a Certified
  Novell Administrator

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Computer Networks

• A computer network consists of two or more
  connected computers that can communicate with
  each other over the network
• A local area network (LAN) is a computer network
  that exists in one location
• A metropolitan area network (MAN) uses
  fiber-optic or microwave towers to connect
  computers in the same area, such as within a city
  or county
• A wide area network (WAN) ties together two or
  more LANs or WANs in different geographic areas

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Computer Networks

• Do not confuse LANs and WANs with the global
  Internet or with corporate intranets
• The Internet is a loose confederation of servers
  that share data among users world-wide, using a
  common suite of protocols called TCP/IP
• Protocol suites are rules and procedures that
  govern sending and receiving network data
• Intranets are private networks that use the same
  protocols as the Internet to offer access to
  internal, non-public information

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Computer Networks

• The network administrator is responsible for
  managing and operating the network
• This is a very rewarding and at the same time,
  frustrating position due to the responsibilities
• Responsibilities range from hardware to software
  to working with users and vendors
• To be a successful network administrator, a
  thorough understanding is required of the basic
  components of a network system, and it is from
  this foundation that requisite skills are built

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Computer Networks

• A LAN consists of a high-speed system of cables,
  communication devices (hardware), and
  instructions (software)
• A LAN makes it possible for different kinds of
  computers and peripherals to communicate and
  share resources over short distances
• LANs differ significantly from older mainframe
  and minicomputers, which operate in a centralized
  fashion where all processing is done by the
  central computer connected to the terminals

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Computer Networks

• LANs allow client workstations (also called PCs),
  with their own computing ability, to work
  together and share resources
• LANs also use servers, which are specialized
  computers that make network resources and
  services available to workstations
• The most common is a file server, which provides
  services for making user data / software
  available
• Serves run a variety of other services, including
  print, application and terminal services

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Computer Networks

• LANs offer many advantages in sharing resources
  and improving communications
• Cost and time savings from shared resources
• Centralized data storage allows for shared access
• Security of data is increased by added protection
• Fault tolerance is expanded by the ability to
  replicate, or mirror, important data
• Office communication is increased by usage of
  email and scheduling applications
• Internet access can be provided to all computers
  through a centralized router and firewall

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Network Components

• Networks consist of three categories of
  components
• Hardware, consisting of workstations, servers,
  printers, volumes and the cable system
• Software, consisting of the network operating
  system and services for providing network
  resources that workstations access
• Communication protocol suites, such as TCP/IP,
  providing the rules and software that control
  data formatting and network data transmission

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Network Components

• Hardware components
• The servers are servants of the network,
  responding to workstations requests for access
  to files and software stored on the servers
  disks
• Client workstations are the computers attached to
  the network for running user applications
• Network Interface Cards (NICs) are used to attach
  each computer to the network system, and are
  responsible for transmitting and receiving data
  packets on the network

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Network Components

• Hardware components
• The network cable system consists of the wiring
  that connects computers on the network, and is
  the highway through which information travels
• The Uninterruptible Power Supply (UPS) contains
  batteries that supply temporary power to the
  server if the local power system fails
• The tape backup system is used to backup all data
  on the server automatically every night
• Printers are available for any client workstation
  to send print output to

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Network Components

• Network protocols or rules
• NetWare SPX/IPX is the Novell system that manages
  routing and formatting NetWare packets IPX must
  be loaded on each network machine
• TCP/IP is responsible for formatting packets and
  routing them using IP, and is the Internet
  standard routers transfer packets by using an IP
  address
• NetBEUI/NetBIOS is the Microsoft protocol stack
  and is the smallest, fastest and easiest to use
  NetBEUI is ideal for networks of 10 to 50 devices

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Network Components

• Network software components
• NIC drivers contain instructions to allow the
  computer to control card functions and interface
  with the application software
• The protocol stack consists of software layers
  that implement the protocol used on the network
• Client workstations require an operating system,
  NIC driver, requester and protocol software
• Clients and servers require network services such
  as security, directory, message, file, print,
  and application services

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Network Components

• Network software components
• The Network Operating System (NOS) is the
  software that controls network services and
  provides access to shared resources on the server
• NOS software is designed to maximize the use of
  server hardware
• Peer-to-peer NOSs enable workstations to share
  data and communicate without needing a server
• Client-server NOSs, such as NetWare, use one
  computer as a dedicated server that acts as a
  central storage unit for client workstations

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Network Components

• Selecting a network operating system involves
  four steps
• Define the network needs by analyzing the
  organizations processing requirements an
  organizational chart provides a good structure by
  which to approach processing needs assessment
• Determine the network operating system needs
• Determine the cable system that will best support
  the needs of the network
• Specify any computer hardware that will be needed
  to implement servers and attach clients

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The Certified Network Administrator (CNA)

• The job of a CNA is to direct an organizations
  networking services and support to meet the
  processing needs of computer users
• CNAs need a solid foundation in the components of
  a NetWare network and how they interoperate
• A CNA must learn the many NetWare commands and
  utilities to perform network maintenance and
  repair tasks

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The Certified Network Administrator (CNA)

• As a CNA, your responsibilities include
• Supporting client workstation environments
• Managing Novell eDirectory Services
• Managing the network file system
• Establishing and maintaining network users and
  security
• Setting up and maintaining network printing
• Loading and updating application software

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The Certified Network Administrator (CNA)

• As a CNA, your responsibilities include
• Creating an automated user environment
• Developing and implementing a backup and recovery
  system
• Managing the server and monitoring network
  performance

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Chapter Summary

• A computer network is formed when two or more
  computers are connected so that they can
  communicate electronically with each other. Local
  area networks (LANs) are located in one site
  wide are networks (WANs) connect two or more LANs
• The network administrator is responsible for
  managing and operating the network. Networks use
  servers, which are specialized computers that
  provide network services. Examples are network
  servers, print servers and application servers

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Chapter Summary

• Networks are widespread in many organizations
  because they cut costs by letting users share
  expensive hardware and software, save time by
  making it easier for others to work together,
  offer shared access to database and document
  files, provide a more secure environment to
  protect sensitive data from unauthorized access,
  provide a more reliable storage system to prevent
  loss of data and time, and offer a communication
  system that can be used for email and scheduling
  applications and to access minicomputer and
  mainframe computer systems

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Chapter Summary

• Networks consist of three major categories of
  components the computer hardware and cable
  system, protocols or rules to control
  communication, and software to provide and access
  network services and resources
• Network operating systems (NOSs) can be
  classified into two types peer-to-peer and
  client-server. Peer-to-peer OSs do not require a
  dedicated server instead they share data among
  the client workstations. Because client-server
  OSs have dedicated servers, they can be more
  efficient and reliable platforms for storage of
  centralized files

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Chapter Summary

• When selecting an operating system for your
  network, consider such factors as the number of
  users and workstations, the type of OSs and
  applications to be used by the client
  workstations, and the need for high-speed
  centralized data storage
• To succeed as a network administrator, you need a
  good understanding of the hardware and software
  components in a network system and how they
  interoperate. The basic hardware components of a
  network consist of the server, cable system,
  network cards, UPS, client workstations and
  shared printers

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Chapter Summary

• The software components of a network consist of
  the card driver program, which directly controls
  the network interface card the protocol stack,
  which formats the data transmitted between
  computers the client program, which provides an
  interface between applications and the network
  and the NOS, which runs on the server and
  provides the shared services

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Chapter Summary

• As a CNA, your responsibilities will include such
  activities as supporting client workstation
  applications, creating and maintaining the
  network directory structures, creating and
  maintaining the eDirectory database and directory
  tree establishing network users and security,
  setting up and maintaining the network printing
  environment, managing the server console,
  maintaining a user-friendly environment, and
  implementing a fail-safe backup and recovery
  system
• Good Luck Mike Sawyer