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Data Communications

by Vineeta Upmanyu
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Vineeta Upmanyu
Vineeta Upmanyu
DATA COMMUNICATION (Common to CSE & ISE) Subject Code: 15CS46 Hours/Week : 04 Total Hours : 50 I.A. Marks : 20 Exam Hours: 03 Exam Marks: 80 MODULE – 1 10 Hours Introduction: Data Communications, Networks, Network Types, Internet History, Standards and Administration Networks Models: Protocol Layering, TCP/IP Protocol suite, The OSI model, Introduction to Physical Layer-1: Data and Signals, Digital Signals, Transmission Impairment, Data Rate limits, Performance Digital Transmission: Digital to digital conversion (Only Line coding: Polar, Bipolar and Manchester coding) MODULE – 2 Physical Layer-2: Analog to digital conversion (only PCM), Transmission Modes, Analog Transmission: Digital to analog conversion Bandwidth Utilization: Multiplexing and Spread Spectrum Switching: Introduction, Circuit Switched Networks and Packet switching 10 Hours MODULE – 3 10 Hours Error Detection and Correction: Introduction, Block coding, Cyclic codes, Checksum, Forward error correction. Data link control: DLC services, Data link layer protocols, HDLC, and Point to Point protocol (Framing, Transition phases only). MODULE – 4 10 Hours Media Access control: Random Access, Controlled Access and Channelization Wired LANs Ethernet: Ethernet Protocol, Standard Ethernet, Fast Ethernet, Gigabit Ethernet and 10 Gigabit Ethernet Wireless LANs: Introduction, IEEE 802.11 Project and Bluetooth MODULE – 5 10 Hours Other wireless Networks: WIMAX, Cellular Telephony, Satellite networks Network layer Protocols: Internet Protocol, ICMPv4, Mobile IP Next generation IP: IPv6 addressing, The IPv6 Protocol, The ICMPv6 Protocol and Transition from IPv4 to IPv6. Text Book: Behrouz A. Forouzan, Data Communications and Networking 5E, 5th Edition, Tata McGraw-Hill, 2013. (Chapters 1.1 to 1.5, 2.1 to 2.3, 3.1, 3.3 to 3.6, 4.1 to 4.3, 5.1, 6.1, 6.2, 8.1 to 8.3, 10.1 to 10.5, 11.1 to 11.4, 12.1 to 12.3, 13.1 to 13.5, 15.1 to 15.3, 16.1 to 16.3, 19.1 to 19.3, 22.1 to 22.4)
DATA COMMUNICATION MODULE 1: TABLE OF CONTENTS 1.1 DATA COMMUNICATIONS 1.1.1 Components 1.1.2 Data Representation 1.1.3 Direction of Data Flow 1.2 NETWORKS 1.2.1 Network Criteria 1.2.2 Physical Structures Type of Connection Physical Topology Bus Topology Star Topology Ring Topology Mesh Topology 1.3 NETWORK TYPES 1.3.1 Local Area Network 1.3.2 Wide Area Network Internetwork 1.3.3 LAN vs. WAN 1.3.4 Switching Circuit-Switched Network Packet-Switched Network 1.3.5 The Internet 1.3.6 Accessing the Internet 1.4 STANDARDS AND ADMINISTRATION 1.4.1 Internet Standards Maturity Levels Requirement Levels 1.4.2 Internet Administration 1.5 PROTOCOL LAYERING 1.5.1 Scenarios Protocol Layering 1.5.2 Principles of Protocol Layering 1.5.3 Logical Connections 1.6 TCP/IP PROTOCOL SUITE 1.6.1 Layered Architecture 1.6.2 Layers in the TCP/IP Protocol Suite 1.6.3 Description of Each Layer 1.6.4 Encapsulation and Decapsulation 1.6.5 Addressing 42 1.6.6 Multiplexing and Demultiplexing 1.7 THE OSI MODEL 1.7.1 OSI versus TCP/IP 1.7.2 Lack of OSI Model’s Success 1.8 DATA AND SIGNALS 1.8.1 Analog and Digital Data 1.8.2 Analog and Digital Signals 1.8.3 Periodic and Nonperiodic 1.9 DIGITAL SIGNALS 1.9.1 Bit Rate 1.9.2 Bit Length 1.9.3 Digital Signal as a Composite Analog Signal 1-1
DATA COMMUNICATION 1.10 1.11 1.12 1.13 1.9.4 Transmission of Digital Signals Baseband Transmission Broadband Transmission (Using Modulation) TRANSMISSION IMPAIRMENT 1.10.1 Attenuation Decibel 1.10.2 Distortion 1.10.3 Noise Signal-to-Noise Ratio (SNR) DATA RATE LIMITS 1.11.1 Noiseless Channel: Nyquist Bit Rate 1.11.2 Noisy Channel: Shannon Capacity PERFORMANCE 1.12.1 Bandwidth 1.12.2 Throughput 1.12.3 Latency (Delay) 1.12.4 Bandwidth-Delay Product 1.12.5 Jitter DIGITAL-TO-DIGITAL CONVERSION 1.13.1 Line Coding Characteristics 1.13.2 Line Coding Schemes Unipolar Scheme Polar Schemes Bipolar Schemes (or Multilevel Binary) 1-2

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