A9.3-R5-Network Management

A9.3-R5-Network Management

Introduction

This course will allow students to develop background knowledge as well as core expertise in networking and data communication technologies, which is one of the fastest growing industries in today’s world. It forms an integral part of the modern Information and Communications Technology (ICT) in any organizations. Starting from intranet/extranet in small offices to the World Wide Web, principles of networking and data communication technologies DCN play an important role in designing any modern telecom infrastructure.

A major ramification of the fantastic growth of telecommunications and networking is a dramatic increase in the number of professions, where an understanding of Computer Networking is essential for success. This course is designed with this new mix of students in mind. The course, being the first one on telecommunication and Computer networking in the NIELIT hierarchy, starts from the very basics of communication technology and goes up to the Internet, spanning all the five layers of TCP/IP model. The students will be exposed to communication principles, different types of media, modulation techniques, multiplexing, switched networks, the Internet, TCP/IP suite, network security, mobile wireless communication, fibre-optic communications and the state-of-art networking applications.

Objective

At the end of the course the students would know:

• Strategies for securing network applications in enterprises
• Emerging technologies, such mobile telephony etc. Acquire confidence inusing computers Networks, Various transmission media, their comparativestudy, fibre optics and wireless media
• Categories and topologies of networks (LAN and WAN)
• Layered architecture (OSI and TCP/IP) and protocol suites
• Channel error detection and correction, MAC protocols, Ethernet and WLAN
• Details of IP operations in the INTERNET and associated routing principles
• Operations of TCP/UDP, FTP, HTTP, SMTP, SNMP, etc.

Learning Objectives

(Learner will learn after completion of unit)

1. Introduction to Computer Networks

1. Understand the concept of networking, various terminologies used in Networking
2. Understand various types of Networks, Network topologies
3. Various modes of communication

2. Introduction: Network layers/Models

1. Network layers concepts and its merits and de-merits
2. Basics of OSI model and TCP-IP protocol suite

3. Physical Layer

1. Understand how data travels physically and understand concepts of signals, transmission modes, switching techniques, various transmission media etc.

4. Data Link Layer

1. Understand function of physical layer, data framing, error detecting codes
2. DLL-sublayers, Physical layer protocols
3. Wireless LAN IEEE standards

5. Network layer

1. Understand IP addressing (IPV4,IPV6)
2. Understand Network layer protocols

6. Transport Layer

1. Understand function of transport layer and port addressing

7. Congestion Control

1. Understand basics of congestion in network and various congestion control techniques

8. Application Layer

1. i. Understand function of application layer and various protocols of this layer

9. Networking devices

1. i. Understand the working of various networking devices used in all Network layers

10. Fundamentals of Mobile communication

1. i. Overview of Mobile communication and evolution of its generations

Marks Distribution

Module Unit Written Marks (Max.)

1. Introduction to Computer Networks 8

2. Introduction: Networks layers/Models 8

3. Physical Layer 10

4. Data Link 10

5. Network Layer 14

6. Transport Layer 14

7. Congestion control 10

8. Application Layer 12

9. Networking Devices 10

10. Fundamentals of Mobile Communication 4

Detailed Syllabus

(i) Introduction To Computer Networks

Introduction: Definition of a Computer Network; What is a Network?, Components of a computer network: Use of Computer networks; Networks for companies, Networks for people, Social Issues: Classification of networks; Based on transmission technology, Based on the their scale, Local Area Networks(LANs), Metropolitan Area Networks (MANs), Wide Area Netwrks(WANs), Computer topologies: Physical vs Logical Topology, Types of topologies: Linear Bus Topology, Ring Topology, Star Topology, Hierarchical or Tree Topology, Topology Comparison, Considerations when choosing a Topology, Modes of communication: Simplex, Half Duplex, Full Duplex, Concept of Channel, Sender and receiver with Communication process

(ii) Introduction: Networks Layers / Models

Protocol hierarchy, Design issues for the layers, Merits and De-merits of Layered Architecture, Service Primitives: Reference models; The OSI Reference Model, The TCP/IP Protocol Model, Comparison of the OSI Reference Model & the TCP/IP Protocol Models: Network standardization; Who's who in the telecommunication world?, Who's who in the standards world, Who's who in the Internet standards world?, TCIP/IP Protocol Suite.

(iii) Physical Layer

Introduction: Basic Functions of Physical Layer, Digital Signals: Bit rate, Bit length,  Transmission of digital Signals, Analog Signals: Amplitude, Phase, Frequency, Wavelength, Transmission Impairments, Data Rate limits: Noiseless Channel: Nuyquist Bit Rate, Noisy Channel: Shannon capacity, Performance: Bandwidth, Throughput, Goodput, Latency (delay), Jitter. Concept of Serial and Parallel transmission, Switching; Circuit switching, Message switching, Packet switching, Virtual Switching, Multiplexing; FDM – Frequency division multiplexing, WDM – Wavelength division multiplexing, TDM – Time Division Multiplexing: Synchronous and Statistical, Transmission Media: Guided Media, Unguided Media, PSTN, Modems, DSL and other standards, Cable Networks: HFC,CM,CMTS.

(iv) Data Link Layer

Introduction, Basic functions of Data Link Layer (LLC and MAC Sublayers): Framinng, CRC, Checksum, Protocols:Stop andWait, Go- Back-N, Selective Repeat, Piggybacking, HDLC, Point to Point, Multiple Access: Random Access :CSMA / CA, CSMA / CD, Controlled Access: Reservation, Polling, Token Passing,Wired LANS: IEEE Standards,Wireless LANs: IEEE Standards.

(v) Network Layer

IPv4 Addressing, IPv4 Subnetting: CIDR, VLSM, NAT, NAT Types, IPv6 Addressing, Transition from IPv4 to IPv6, Address Mapping: ARP, RARP, BOOTP, DHCP, ICMP, ICMPv6 and IGMP, Concept of Forwarding of Packets by Routers, Unicast Routing Protocols: Distance Vector, Link State, Path Vector with examples of each.

(vi) Transport Layer

Introduction, Basic Functions of Transport Layer: Client server Process with Port Numbers concept in detail, Concept of Socket Multiplexing vs De-multiplexing, Connectionless vs Connection Oriented, Reliable vs Unreliable, UDP in detail, TCP in detail.

(vii) Congestion Control

Flow control vs. congestion control. Congestion Basics, Congestion Control: Open- Loop Closed-Loop, Concept of Quality of Service, techniques to improve QoS.

(viii) Application Layer

Basic Function of Application Layer, Concept of Namespace and DNS, Basics of Remote Logging (telnet and ssh), E-mail: Architecture, Introduction to SMTP, POP, IMAP protocols, File Transfer: FTP, Anonymous FTP and TFTP, Concept of www and HTTP: www, http, https protocols, Basics of Network Management System: SNMP protocol

(ix) Networking Devices

Introduction; Goal of networking devices: Repeaters and their use, Hubs, Bridges, Managed vs Non Manageable switches, L-2 Switches, L-3 Switches, Stackable Switches, Concept of Collision Domain, Working of Hubs and Switches, Concept of Port Density, Concept of Broadcast Domain, Routers: Dedicated Hardware versus Server-Based Routers, Advantages and Disadvantages of dedicated hardware routers, Drawbacks of Routers, Gateways: Advantages of Gateways, Gateways Functionality, Other Devices: Brouter, Proxy Server, Wireless Access Point (WAPs)/Wireless Router, Wireless LAN Extender and Wireless LAN Controller

(x) Fundamentals of Mobile Communication

Introduction to wireless communication, wireless transmission:frequencies & regularion, signals, antena, multiplexing, modulation, spread spectrum & cellualr system. Evolution of Mobile Generation Technologies: 1G, 2G, 3G, 4G and 5G.

Reference Books/Study Material

1. Introduction to Computer Communication Networks,

2. Andrew S. Tanenbaum, Computer Networks