Contents

1.Wireless LAN

1.1 Introduction

1.2 IEEE 802.11 architecture

1.3 Bluetooth

1.4 Comparing Wireless LAN and Bluetooth

2.Network Layer

2.1 Introduction

2.2 Design Issues

2.3 Logical Addressing

2.4 IPV4

2.5 Routing

2.6 Congestion Control

3.Address Mapping

3.1 Introduction

3.2 Address Mapping

3.3 ARP

3.4 RARP

4.Transport Layer

4.1 Introduction

4.2 Process to Process Delivery

4.3 User Datagram Protocol (UDP)

4.4 Transmission Control Protocol (TCP)

4.5 Comparison Between TCP and UDP

5.The application layer

5.1 Introduction

5.2 domain name system

5.3 email

5.4 File transfer protocol

5.5 www

5.6 http

6.Internetworking Devices

6.1 Introduction

6.2 connecting devices

6.3 physical layer devices

6.4 data link layer devices

6.5 network layer devices – router

6.6 gateways

6.7 backbone networks

6.8 virtual lan’s

7.Network Security

7.1 Introduction

7.2 Cryptography

7.3 Two Fundamental Cryptographic Principles

7.4 Communication Security

7.5 Web Security

7.6 Mobile Code Security

7.7 Social Issues