Unit-1 Net Basics

1. can be modeled using

1.1. OSI

1.2. TCP/IP

1.3. ATM

2. Operation are enhanced

2.1. Encoding

2.1.1. NRZ

2.1.2. NRZI

2.1.3. Manchester encoding

2.1.4. 4B/5B

2.2. Framing

2.2.1. BISYNC

2.2.2. PPP

2.2.3. DDCMP

2.2.4. HDLC

2.3. Error detection

2.3.1. Two dimentional parity

2.3.2. Internet checksum algorithm

2.3.3. Cyclic redundancy check

2.4. Reliable transmission

2.4.1. STOP and WAIT protocol

3. are standardized by

3.1. Ethernet(802.3)

3.2. WireLess(802.11)

3.3. Bluetooth(802.15.1)