Network Communication

Network Communication

1. serial and parallel transmission

   • Serial
     • Serial sends one bit at a time
   • Parallel
     • parallel sends multiple bits simultaneously
     • USB (Universal Serial Bus) ports

2. synchronous and asynchronous data transmission

   • synchronous
     • Transmission occurs at the same time
   • asynchronous
     • start bit used to synchronise clocks of sender and receiver

3. start and stop bits in asynchronous data transmission.

   • Start Bit
     • Used to indicate the start of a unit of data
   • Stop Bit
     • Used to indicate the end of a unit of data
   • Parity Bit
     • Method to count the number of binary numbers in code

4. baud rate

   • Number of signal changes per second

5. bit rate

   • The number of bits transferred per sec / per unit of time

6. bandwidth

   • The measure of the capacity of the channel down which data is being sent (Hz)

7. latency

   • Time delay between the moment something is initiated and the moment its effect begins

8. protocol

   • Telnet
   • FTP
   • POP3