Computer Network – Physical Layer

  1. Functions of Physical Layer
  2. Data and Signals
    1. Analog and Digital Signals
    2. Transmission Impairment
    3. Data rate Limits
    4. Performance
  3. Data Transmission Media
    1. Guided Media
    2. Unguided Media
    3. Satellites
  4. Bandwidth Utilization
    1. Multiplexing
    2. Spreading
  5. Switching
    1. Circuit Switching
    2. Message Switching
    3. Packet Switching
  6. Telephone, Mobile and Cable network for Data Communications

Functions of Physical Layer

Data and Signals

Analog and Digital Signals

Transmission Impairment

Data Rate Limits

Performance

Data Transmission Media

Guided Media

Unguided Media

Satellites

Bandwidth Utilization

Multiplexing

Spreading

Switching

Circuit Switching

Message Switching

Packet Switching

Telephone, Mobile and Cable network for Data Communications