introduction to data communication

1. Introduction To Data Communication
Presented by Team Spirit
Abu Kaiser Mohammad Masum
Rakib Hossain
Fowjael Ahamed

2. Data Communication
 What is data communication?
 Effectiveness of data communication
 Delivery
 Accuracy
 Timeliness
 Jitter
 Components
 Message
 Sender
 Receiver
 Transmission medium
 Protocol

3. Data representation
 Text
 Unicode
 ASCII
 Numbers
 8/16/32 bit integers
 Floating point
 Images
 Bit patterns
 Pixels
 Audio
 Video
Samples of continuous signals
Sequence of bitmap images

4. Data flow
 Simplex
 keyboard
 Half-duplex
 Walkie-talkies
 Cb radios
 Full-duplex
 Telephone

5. Network criteria
 Helps to improve network functionality
Network criteria
Performance Reliability Security

6. Types of connection
 There are two possible types of connection:
 Point-to-point
 Remote control television
 Multipoint
Link
Link
Point to point
Mainfram
e
Multipoint

7. Physical topology
 There are four basic topologies
 Mesh topology
 Bus topology
 Ring topology
 Star topology

8. Network types
 Two types of network
 Local area network(LAN)
 Home
 Personal use
 Wide area network(WAN)
 University
 ATM
 Company

9. Devices used in networking
 Mainly four device are used in networking
 Modem
 Hub
 Switch
 Router

10. The internet
 The internet has revolutionized many aspects of our daily lives.
 Internet is a interconnecting network between two or more device.
 Internet -Hierarchical Organization
Structure of National ISP
Interconnection of National ISPs