Data communications concerns the transmission of digital messages to devices external to the message source. ‘External’ devices are generally thought of as being independently powered circuitry that exists beyond the chassis of a computer or other digital message source. It is the aim of any communication system to provide the highest possible transmission rate at the lowest possible power and with the least possible noise.
This course is designed help students to have sound knowledge on the working of communication technology, network management and security, OSI layer, RS-232 and 485, fibre optics and local area networks.
After completing this course, students will have thorough knowledge on /will be well versed with the hardware and software commonly used in data communications and networking.
WHO SHOULD COMPLETE THIS COURSE?
- Engineers
- Analysts
- Equipment vendors
- Internet service providers
- Law firms
- Managers
- Industry stakeholders
- Representatives from carriage service providers
COURSE OUTLINE
OSI MODEL
STANDARDS AND NUMBER SYSTEMS
- Standards
- Number systems
- Binary codes
- Baudot
- EBCDIC
- ASCII
COMMUNICATION MODES
- Simplex and duplex
- Synchronous and asynchronous transmission
- NRZ vs. Manchester
- Amplitude, Phase and Frequency modulation
RS-232
- Introduction
- Connections
- Voltage levels
- Asynchronous Transmission format
- ASCII Table
- Limitations
MEASURING RS-232 VOLTAGE
- Eavesdropping
- Limitation
- Most versatile TIL standard
- Data signaling vs. cable strength
RS-485 VOLTAGE
- RS-485 Transmission
- Two wire network
- Four wire network
- Signal on terminated and unterminated line
- RS-485 vs. RS-232
20MA LOOP AND BELL-202
OSI LAYERS
- What is protocol
- Data link protocols specify
DF-1
- ASCII Table
- DF-1 Control characteristics
- Normal Message Transfer
MODBUS
- Modbus serial
- OSI Layer implementation
- Client server interaction
- Modbus transactions
- RTU mode
- ASCII mode
CABLES, CONNECTORS AND ITS TYPES
- Selection criteria
- Preferred cable types
- D-type connectors
- RJ-45 Connectors
- Transient Protection
FIBRE OPTICS
- Applications
- Fibre optic cable components
- Construction of optic fibre
- Graded Index multimode fibre
- ST connector
- Trace from an OTDR
