Enumeration

Delivery, Accuray, Timeliness, Jitter

Fundamental Characteristics of a data

communication system

Message, Sender, Receiver, Transmission medium, and Protocol

Components of Data Communication

Simplex, Half-duplex and full duplex

Data Flow

Multipoint and Point-to-point

Physical sTRUCTURE

Mesh Topology, Star, Bus, Ring and Hybrid Topology

Network Topology

Local Area Networks, Wide Area Nteworks and Metropolitan Area Networks

Category of Networks

File transfer, web surfing, emails and virtual terminals

Network Services

Application layer, Presentation Layer, Session layer, Transport layer, Network layer, Data Link layer, Physical Layer

7 layers of the OSI Model

Translation, Data Compression, Encryption

Presentation Layer

Synchronization, Dialog control, Authentication, Authorization

Session layer

Segmentation, Flow Control, Error Control,

Transport layer

Logical Addressing, Routing, Path determination

Network layer

Framing, Flow Control,Error Control, Access Control

Data Link layer

Physical Characteristics of interfaces and

medium, Representation of bits, Data Rate, Synchronization of bits, Line configuration, Physical Topology and Transmission mode

Physical Layer

Amplitude or Peak Amplitude, Period, Frequency, phase or phase shift

Signal Properties