Data Communication

1. Chapter-1 Communication networks and services

1.1. Message Switching

1.2. Circuit Switching

1.3. Packet Switching

2. tcp

3. Chapter-2 Applications and Layered Architectures

3.1. OSI reference model

3.2. Tcp/ip

3.3. Protocols in TCP/IP

4. Chapter 5- Data link layer

4.1. Error Detection and correction:

4.2. Flow Control

4.3. Error control: 1. Stop and wait ARQ 2.Go-back-N ARQ 3.selective Repeat ARQ.

5. Chapter-3 Digital Transmission and Communications

5.1. Signals: 1. digital signals 2. analog signals

5.2. Transmission Impairment; 1: Attenuation, 2: distortion, 3: dispersion, 4: noise

5.3. Channel capacity: Speed of Transmission depends on bandidth ,error rate,encoding.

5.4. Digital Transmission: Line coding block coding.

5.5. Analog Transmission

5.5.1. Digital to analog: Amplitude Shift keying. Freuency shift keying .Phase shift keying.

5.5.2. Analog to analog: Amplitude Modulation, Frequency modulation, phase modulation.

6. Chapter 4 Circuit Switching Networks

6.1. Multiplexing

6.2. Time Division Multiplexing

6.3. Wavelength-Division Multiplexing

6.4. SONET Multiplexing

6.5. SONET

6.6. SONET Frame Structure

7. Chapter-5 Peer-to-Peer Protocols and Data Link Layer

8. Chapter-6 Medium Access Control Protocols and Local Area Networks

8.1. random access protocol ALOHA

8.2. Slotted ALOHA

8.3. Carrier sense multiple access

8.4. Scheduling Approaches to Medium Access Control