MSBTE 22322 Data Communication Notes | MSBTE Diploma Engineering All Units Notes are comprehensive study resources provided by (www.diplomasolution.com). MSBTE 22322 Data Communication notes are specialized study materials crafted by the (www.diplomasolution.com). This Notes is Created by Diploma Solution Team (www.diplomasolution.com).
Here's a general overview of the
core concepts in Data Communication:
1. Basics of Data
Communication:
- Definition: Transfer of data from one device
to another.
- Components: Sender, Receiver, Transmission
Medium, Protocol, and Message.
2. Transmission Medium:
- Guided Media: Wires, cables (e.g., coaxial,
twisted-pair, optical fiber).
- Unguided Media: Wireless (e.g., radio waves,
microwaves).
3. Data Transmission Modes:
- Simplex: One-way communication (e.g., radio
broadcasts).
- Half-Duplex: Two-way communication but only
one can send at a time (e.g., walkie-talkies).
- Full-Duplex: Both devices can send and
receive simultaneously (e.g., telephone conversation).
4. Data Signals:
- Analog Signal: Continuous signal (e.g.,
traditional phone lines).
- Digital Signal: Discrete signal, often used
in computing.
5. Modulation: Changing the
properties of a carrier signal based on the data signal.
- Analog Modulation: AM, FM, PM.
- Digital Modulation: ASK, FSK, PSK.
6. Multiplexing: Combining
multiple signals for transmission over a single channel.
- Types: FDM (Frequency Division
Multiplexing), TDM (Time Division Multiplexing).
7. Switching:
- Circuit Switching: Dedicated communication
path (e.g., traditional phone system).
- Packet Switching: Data sent in small
packets, possibly via different routes (e.g., Internet).
8. Protocols and Standards:
- Rules that dictate how data is transferred and
received.
- Protocols like TCP/IP, HTTP, FTP, etc.
9. Error Detection and
Correction:
- Techniques to identify and fix errors in data
transmission.
- CRC, parity, checksum.
10. OSI Model: A conceptual
framework used to understand network interactions in seven layers: Physical,
Data Link, Network, Transport, Session, Presentation, and Application.
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