Computer Networks

364 Pages·2018·9.475 MB·English

by  Er Vikrant Vij

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C O M P U T E R N E T W O R K S O
Er. Vikrant Vij
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ABOUT THE BOOK
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In this fast pace of computer world where almost everyday something new is introduced in this
faculty of studies, learning computer and obtaining further knowledge in this subject has become
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an essential need for everyone. Considering this crucial aspect in view, an endeavor has been
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made to bring out such an ideal book on computer science that can benefit the students and
teachers alike. And thus, the book titled, Computer Networks has been brought out to meet their R
requirements.

Examining a wide range of techniques, technologies and systems utilized in data communications N
and computer networks, Computer Networks has been prepared to address various data
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transmission methods used in conveying data between physically distant locations. Several types
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of network are brought into consideration that may interconnect thousands of users on both
permanent as well as temporary, switched basis. To execute successful communication, a set of W CCCOOOMMMPPPUUUTTTEEERRR
rules and procedures has been developed, many of which are embodied in internationally
accepted standards. O
The organized material i.e. the outcome of this book is an effort to provide a reasonable
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magnitude of balance between rigor, clarity of presentation while keeping the length of the book
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at manageable level. Consisting of eight chapters, its prime objective is to provide an introduction
to different computer network fundamentals and to develop a foundation that can be utilized as
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the basis for research and further studies in this sphere.
ABOUT THE AUTHOR
Er. Vikrant Vij is an academician to the core. He did his B.Tech. (with distinction) in ECE from PTU,
Jalandhar and M.E. in ECE from NITTTR, Chandigarh. He has contributed and presented several
research and review papers in various conferences across the country. He has published a number
of textbooks in communication engineering. His areas of interest include Mobile and optical
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communications, VLSI design and embedded applications. He is Editor-in-Chief of International r
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Journal of VLSI and Signal Processing Applications. He is currently working as Faculty at JPTC, V
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Samipur, Himachal Pradesh. He is Member of IAENG, ISTE, AIRCC and lACS IT. He is a dedicated r
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social worker and Traditional Reiki master and used to conduct counseling sessions for budding n
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engineers. V
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ISBN 978-93-5274-080-2
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9789352740802-0395
M.R.P. ` 395.00
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COMPUTER NETWORKS

COMPUTER
NETWORKS
For
B.E./B.Tech/AMIE/AMIETE examinations in Computer
Science and Electronics discipline
By
Er. Vikrant Vij
B.tech (Hons.), M.E (ECE)
Ex-Faculty in Electronics and Communication Engineering
Jaypee University of Information Technology, Himachal Pradesh
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COMPUTER NETWORKS
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Dedicated to ...
My Loving Parents, My Living Angels, My Guides
Mrs. Muktesh Vij & Mr. Harsh Vij
For showing me light on this earth...

C
ONTENTS
Preface (xi)
Acknowledgements (xiii)
CHAPTER 1: COMPUTER NETWORK FUNDAMENTALS 1–35
1.1 Introduction 1
1.2 Computer Network Types 3
1.3 Network Topology 5
1.4 Network Connectivity and Protocols 9
1.5 Network Models 12
1.6 Network Services 29
1.7 Examples of Network Architectures 32
Review Questions 35
CHAPTER 2: THE PHYSICAL LAYER 36–63
2.1 Introduction 36
2.2 The Theoretical Basis for Data Communication 36
2.3 Data Communication Transmission Technology 41
2.4 Data Communication Media Technology 43
2.5 Mobile and Cellular Networks and Communication 49
2.6 Optical Switching Networks 59
Review Questions 63
CHAPTER 3: DATA LINK LAYER 64–99
3.1 Introduction 64
3.2 Framing 66
3.3 Error Detection and Correction 68
3.4 Feedback Error Control 82
3.5 Flow Control 84
(vii)
(viii)
3.6 Introduction of Link Management 88
3.7 High Level Data Link Control 89
3.8 Link Management 93
3.9 Point to Point Protocol 97
Review Questions 99
CHAPTER 4: THE MEDIUM ACCESS CONTROL SUBLAYER 100–162
4.1 Introduction 100
4.2 Multiple Access Protocols 102
4.3 ETHERNET 111
4.4 Token-Ring 127
4.5 Token Bus 140
4.6 Wireless LAN (IEEE 802.11) 141
4.7 IEEE 802.16 BROADBAND WIRELESS 150
4.8 Bluetooth 153
4.9 Connecting Devices 158
Review Questions 160
CHAPTER 5: THE NETWORK LAYER 163–194
5.1 Introduction 163
5.2 Services Provided to Transport Layer 163
5.3 Network Layer Issues: Delivery and Forwarding 164
5.4 The Network Layer in Internet 166
5.5 Network Address Translation (NAT) 174
5.6 IP Version 6 176
5.7 Address Translation (ARP) 178
5.8 Host Configuration (DHCP) 180
5.9 The Internet Control Message Protocol (ICMP) 182
5.10 Routing Protocols 186
5.11 Internet Protocol Security (IPSec) 189
5.12 Virtual Private Networks (VPN) 192
Review Questions 193
CHAPTER 6: THE TRANSPORT LAYER 195–224
6.1 Introduction 195
6.2 Transport Services 196