Introduction to Data Communications
Communications Model, Data Communication Networks,
Public Switched Telephone Network (PSTN) , Leased Line, Local Area Networks
(LAN), Public Switched Data Network (PSDN), Integrated Services Digital
Network (ISDN), Communication Architectures, Protocol Layer Concepts, OSI
Layer, Standard Organizations. Last update: 19 May 2002
Signal Transmission Structures, Digital and Analog Signal,
Time and Frequency Domain concepts, Fourier Series, Broadband and Baseband. Last update: 19 May 2002
Transmission Impairments Attenuation, Distortion, Noise, Crosstalk, Nyquist
Theorem, Shannel-Hartley law, Bit rate and Baud rate, Bandwidth efficiency. Last update: 19 May 2002
Twisted pair, STP, UTP, Coaxial cable, Fiber
Optics, Wireless, Microwave, Satellite, Radio, Media Properties. Last update: 19 May 2002
Fiber Optics Fundamentals Snell's Law, Transmission Mode, Multimode Fiber,
Single Mode Fiber, Typical Fiber Cable, Cable Structure. Last update: 19 May 2002
Data Encoding Encoding Scheme, Encoding and Modulation, AMI,
B8ZS, HDB3, Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK),
Phase Shift Keying (PSK), Pulse Code Modulation (PCM), Delta Modulation.
Amplitude Modulation (AM), Frequency Modulation (FM), Phase Modulation
(PM). Last update: 19 May 2002
Data Transmission Simplex, Half-Duplex, Full-Duplex, Serial and
Parallel Transmisison, Synchronous and Asynchronous Transmission, Bit Oriented
Synchronous Transmission, Byte Oriented Synchronous. Last update: 19 May 2002
Modem
Modem functions, Modulation Methods, FSK, PSK,
DPSK, QAM, TCM, Standard V Series, Error Correcting Techniques. Last update: 19 May 2002
Multiplexing Techniques
Multiplexer, Frequency Division Multiplex (FDM),
Time Division Multiplex (TDM), Statistical TDM.
Digital Carrier Systems
T-carrier, Superframe, Extended Superframe, (ESF),
E-carrier, PDH, Synchonouse Digital Hierarchy, Synchronous Optical Network,
SONET/SDH, Digital Multiplexing Hierarchy. Last update: 19 May 2002
Data Link Control
Flow Control, Sliding-Window, Error Detection,
Parity Check, Cyclic Redundant Check (CRC), Error Control Techniques, Stop-and-Wait
ARQ, Go-back-N ARQ, Selective-repeat ARQ. Last update: 19 May 2002
Switching Network Switching technology, Circuit switching, Packet
switching, Routing, Virtual circuits, Datagrams. Last update: 19 May 2002
Local Area Networks LAN characteristics, Topology, Bus, Ring, Star,
LAN Media, Data Link Layers, MAC Address, Logical Link Control, LAN Standard,
IEEE 802.2, IEEE 802.3, IEEE 802.4, IEEE 802.5, IEEE 802.6 and FDDI. Last update: 19 May 2002
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