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Computer Networks (2nd Edition)
Philip Irving

Contents

Introduction

• Which courses does the book cover?
• Learning outcomes
• Using learning outcomes to plan your study
• What’s in the book
• Tips and tricks
• Textbooks
• Additional materials and resources
• Key to symbols used in this book

Chapter 1: Introduction to networks

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: The evolution of computer networks
• What are computer networks?
• Early computer systems
• Local interactive terminals
• Remote access
• Leased lines
• Local area networks
• Quick test
• Section 2: Types of networked computing
  • Introduction
  • Client/server computing
  • Peer-to-peer networking
  • Summary
  • Quick test
• Section 3: Network categories
  • Introduction
  • Local area network (LAN)
  • Metropolitan area networks (MANs)
  • Wide area networks (WANs)
  • Personal area networks (PANs)
  • Vehicular Area Networks (VANs)
  • Virtual local area networks (VLANs)
  • Intranets/Internet
  • Intranet
  • Virtual private networks (VPNs)
  • Internet
  • Extranets
• Section 4: Voice over IP
  • Introduction
  • VoIP
  • Quick test
  • Question
  • Answer
  • Quick test
• Section 5: End of chapter assessment
  • Questions
  • Answers
• Section 6: Further reading and research

Chapter 2: The networked system

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: Networked resources
  • Overview of network resources
  • Quick test
• Section 2: Facilities of a networked operating system
  • Why are computer networks so popular?
  • Quick test
• Section 3: Capacity and performance issues
  • Capacity limitations
  • Quick test
• Section 4: Security implications
  • Security implications
  • Quick test
• Section 5: Licensing issues
  • Licensing issues
  • Quick test
• Section 6: End of chapter assessment
  • Questions
  • Answers
• Section 7: Further reading and research

Chapter 3: Fundamentals of networks

• Section 1: Understanding network basics
  • Chapter summary
  • Learning outcomes
  • How will you be assessed on this?
  • Encoding
  • Circuits
  • Signal problems
  • Electrostatic discharge (ESD)
  • Broadband/baseband
  • Packets
  • Error detection/correction
  • Quick test
• Section 2: Network topologies
  • Early star networks
  • Point-to-point network
  • Bus network
  • Tree network
  • Ring network
  • Star with logical ring
  • Mesh network
  • Structured cabling solutions/modern star
  • Technologies
  • Quick test
• Section 3: Network addressing and protocols
  • Protocols
  • Logical and physical addressing
  • Subnetworks (subnets)
• Section 4: End of chapter assessment
  • Questions
  • Answers
• Section 5: Further reading and research

Chapter4: Standards

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: The OSI seven-layer model
  • The OSI seven-layer model
  • The upper layers
    • Layer 7: the application layer
    • Layer 6: the presentation layer
    • Layer 5: the session layer
  • The lower layers
  • Layer 4: the transport layer
  • Layer 3: the network layer
  • Layer 2: the data link layer
  • Layer 1: the physical layer
  • Quick test
• Section 2: The TCP/IP model
  • Application layer
  • Transport layer
  • Internet layer
  • Network access layer
  • Quick test
• Section 3: Comparison of the models
  • Quick test
• Section 4: End of chapter assessment
  • Questions
  • Answers
• Section 5: Further reading and research

Chapter5: Popular technologies

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: Ethernet networks
  • Ethernet frame formats
  • Ethernet variants
  • 10Base5
  • 10Base2
  • 10BaseT
  • 1000BaseT (or Gigabit Ethernet)
  • 10 Gigabit Ethernet
  • Wireless LAN (WLAN)
  • Quick test
• Section 2: Token Ring (IEEE 802.5)
  • Method of access and operation
  • Token Ring hardware
  • Token Ring frame structure
  • Advantages/disadvantages of Token Ring
  • Quick test
• Section 3: Fibre-Distributed Data Interface (FDDI)
  • Method of access and operation
  • Advantages/disadvantages of FDDI
  • Quick test
• Section 4: Asynchronous Transmission Method (ATM)
  • Introduction
  • ATM
  • Advantages/disadvantages of ATM
  • Quick test
• Section 5: End of chapter assessment
  • Questions
  • Answers
• Section 6: Further reading and research

Chapter 6: Popular networking devices

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: Interconnection provided by a Network Interface Card (NIC)
  • Introduction
  • Quick test
• Section 2: Collision and broadcast domains
  • Introduction
  • Broadcast domain
  • Collision domain
  • Quick test
• Section 3: Interconnection based on a repeater
  • Introduction
  • Co-axial repeaters
  • UTP repeaters
  • UTP/coaxial converting repeater
  • Quick test
• Section 4: Interconnection based on a hub
  • Introduction
• Coaxial hubs
• UTP hubs
• Quick test
• Section 5: Interconnection based on a bridge
  • Introduction
  • Technology conversion bridges
  • Single technology bridges
  • Quick test
• Section 6: Interconnection based on a switch
  • Introduction
  • Switches/switching
  • Managed/Unmanaged switches
  • Quick test
• Section 7: Interconnection based on a MAU
  • Introduction
  • MAU
  • Quick test
• Section 8: Interconnection based on a router
  • Introduction
  • Routers
  • Quick test
• Section 9: Understanding interconnection based around a Router Switch Module (RSM)/Multiprotocol Layer Switch (MPLS or MLS)/Layer 4 switching
  • Introduction
  • MPLS
  • CEF
  • Deployment of MPLS/RSM devices
  • Quick test
• Section 10: Interconnection based on a gateway
  • Introduction
  • Gateway
  • Quick test
• Section 11: End of chapter assessment
  • Question
  • Answer
• Section 12: Further reading and research

Chapter 7: Network design process

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: Network design goals
  • Network design goals
  • Functionality
  • Scalability
  • Adaptability
  • Manageability
  • Availability
  • Quick test
• Section 2: Network design components
  • Network design components
  • Function and positioning of servers
  • Collision detection/segmentation
  • Quick test
• Section 3: Network design methodology
  • Gathering facts and figures
  • Analysing requirements
  • Designing the structure of the network
  • ‘Standard’ design structures
  • Documenting the network
  • Quick test
• Section 4: Capacity planning
  • The capacity planning process
  • Quick test
• Section 5: Sample design
  • Introduction
  • Process
  • Average load
  • Quick test
• Section 6: Wireless LAN design
  • Wireless LAN design considerations
  • Topologies
  • Designing a multiple access point wireless LAN
  • Security
  • Security of information in transit
  • Misuse of the access point
  • MAC address locking
  • Building to building WLANs
  • Quick Test
• Section 7: End of chapter assessment
  • Questions
  • Answers
• Section 9: Further reading and research

Chapter 8: Network software

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: Multi-user operating systems
  • Peer-to-peer networks
  • Multi-user operating systems
  • Non-pre-emptive systems
  • Pre-emptive systems
  • Quick test
• Section 2: The UNIX filing structure
  • Directory structures
  • Quick test
• Section 3: Filing system security
  • Users and groups
  • Rights
  • Inherited rights
  • Setting up security on files and directories
  • Other file and directory attributes
  • Quick test
• Section 4: End of chapter assessment
  • Questions
  • Answers
• Section 5: Further reading and research

Chapter 9: Setting up a networked operating system

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: Installing Linux and applications
  • Installation process
  • First steps
  • Testing Media
  • Language selection
  • Installation type
  • Installing peripherals
  • Auto partitioning
  • Bootloader
  • Network configuration
  • Firewall configuration
  • Time zone selection
  • Package installation
  • Installing
  • Installation complete
  • Root password
  • Post installation tasks
  • User accounts
  • Additional software
  • Installing applications
  • Adding users and groups
  • Quick test
• Section 2: Configuring the user environment
  • User environment
  • User interfaces
  • Login scripts
  • Menu systems
  • Quick test
• Section 3: Printer setup and options
  • Setting up the printer
  • Printing options
  • Managing printer queues
  • Quick test
• Section 4: End of chapter assessment
  • Questions
  • Answers
• Section 5: Further reading and research

Chapter 10: Network management

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: Creating users and groups
  • Creating users and groups
  • Management of users
  • Quick test
• Section 2: Managing networks
  • Estimating resource usage
  • Managing systems: backup
  • Backup now complete, what next?
  • Types of backup
  • Full
  • Incremental
  • Differential
  • Backup cycles
  • Introduction
  • Grandfather/father/son
  • Four-week cycle
  • Additional considerations
  • Quick test
• Section 3: Disaster recovery planning
  • Introduction
  • Backups
  • Disasters
  • Example of risk assessment/minimisation
  • Risk assessment
  • Planning
  • Self protection
  • Mutual protection
  • Commercial plans
  • Testing your disaster recovery plan
  • Quick Test
  • Virus protection
  • Quick test
• Section 4: End of chapter assessment
  • Questions
  • Answers
• Section 5: Further reading and research

Chapter11: Connecting to the outside world

• Section 1: Types of Internet connections
  • Dial-up connection
  • Chapter summary
  • Learning outcomes
  • How will you be assessed on this?
  • ADSL
  • Cable modems
  • ISDN
  • Satellite
  • Private wire
  • Mobile connections
  • Quick test
• Section 2: The Internet (TCP/IP) case study
  • Your Internet settings
  • Beginning the journey
  • The proxy server
  • The default gateway
  • Firewall
  • On to the Internet
  • Arriving at the destination
  • The return journey
  • Summary
  • Quick test
• Section 3: End of chapter assessment
  • Questions
  • Answers
• Section 4: Further reading and research

Chapter12: Network security

• Chapter summary
• Learning outcomes
• How will you be assessed on this?
• Section 1: Security
  • Introduction
  • Misuse of the computer system
  • Attacks on the network
  • Types of attack
  • Reconnaissance attacks
  • Access attacks
  • Denial of Service (DoS)
  • Elements of good practice
• Section 2: Security technologies
  • Introduction
  • Physical disconnection
  • User accounts
  • Access control lists on a router
  • VLANs
  • Network Address Translation (NAT)/Port Address Translation (PAT)
  • Firewall
  • AAA authentication/syslog servers
  • Network time servers
• Section 3: End of chapter assessment
  • Questions
  • Answers
• Section 4: Further reading and research

Glossary

Index

Author:

Philip Irving, University of Sunderland