Computer Networks and Communications

296 Pages·2018·28.955 MB·English

by  Jocelyn O. Padallan

COMPUTER NETWORKS AND
COMMUNICATIONS

COMPUTER NETWORKS AND
COMMUNICATIONS
Jocelyn O. Padallan
ARCLER
P r e ss
www.arclerpress.com
Computer Networks and Communications
Jocelyn O. Padallan
Arcler Press
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e-book Edition 2019
ISBN: 978-1-77361-584-4 (e-book)
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ABOUT THE AUTHOR
Jocelyn O. Padallan is currently pursuing her Master of Science in
Information Technology from Laguna State Polytechnic University,
Philippines and has Master of Arts in Educational Management from the
same University. She has passion for teaching and has been an Instructor at
Laguna State Polytechnic, Los Banos Campus, Philippines.

TABLE OF CONTENTS
List of Figures ................................................................................................xi
List of Table ................................................................................................xvii
Summary ....................................................................................................xix
Preface........................................................................ ................................xxi
Chapter 1 Introduction to Computer Networks and Communication ........................1
1.1. Introduction ........................................................................................2
1.2. Networks ............................................................................................5
1.3. Reference Models ...............................................................................6
1.4. Physical Attributes of a Network .........................................................8
1.5. Analog and Digital Communication ..................................................11
1.6. Transmission Impairment ..................................................................12
1.7. Wireless Communication ..................................................................15
1.8. Cellular Network ..............................................................................19
1.9. Protocols and Standards ....................................................................20
References ...............................................................................................23
Chapter 2 Principles and Protocols in Computer Networks .....................................25
2.1. Introduction ......................................................................................26
2.2. Communications and Computer Networks .......................................33
2.3. Protocols ..........................................................................................36
2.4. Elucidation About Seven OSI Layers..................................................38
2.5. Internet Working, Concept, Protocols and Architecture .....................44
2.6. Common Protocol Frameworks .........................................................45
References ...............................................................................................51
Chapter 3 Networking Types, Topologies and Security ............................................53
3.1. Introduction ......................................................................................54
3.2. Types of Connections ........................................................................55
3.3. Types of Networks .............................................................................56
3.4. Types of Switches ..............................................................................57
3.5. Types of Cables .................................................................................59
3.6. Types of Computer Networks ............................................................61
3.7. Types of Network Protocols ...............................................................64
3.8. Types of Network Topologies .............................................................65
3.9. Types of Wireless Networks And Standards .......................................66
3.10. Types of Network Architecture ........................................................68
3.11. Advantages .....................................................................................69
3.12. Disadvantages .................................................................................69
3.13. Network Security ............................................................................70
3.14. Security Goals ................................................................................71
3.15. Types of Network Security ...............................................................72
3.16. Network Security Topologies ...........................................................75
3.17. Wireless Network Security Keys ......................................................77
3.18. Conclusion .....................................................................................81
References ...............................................................................................82
Chapter 4 Digital and Analog Transmission .............................................................83
4.1. Introduction ......................................................................................84
4.2. Data .................................................................................................85
4.3. Digital to Digital Conversion ............................................................87
4.4. Digital to Analog Conversion ............................................................92
4.5. Analog to Digital Conversion ............................................................96
4.6. Analog-to-Analog Conversion .........................................................102
4.7. Transmission of Data .......................................................................105
4.8. Parallel Transmission .......................................................................106
4.9. Serial Transmission ..........................................................................107
4.10. Comparison Between Serial And Parallel Transmission ..................109
4.11. Advantages Of Digital Transmission ..............................................110
4.12. Conclusion ...................................................................................111
References .............................................................................................112
Chapter 5 Transmission Media and Switching .......................................................113
5.1. Introduction ....................................................................................114
viii