dcnprt2

• Data is the information that has been processed and organized into digital form.
• Forms of Data include Voice, Video, Picture, Text, Number, Microprocessor OP codes, and ASCII.
• The two-way point process of exchanging information from one point to another is known as Data Communications.
• Communication Link (Medium) may consist of physical circuits such as wires, cables, optical fibers, and serves as a highway of data.
• Computers, I/O units, displays, remote access or read-only devices are examples of data communication units.
• Data Communications (DCE) involves establishing, maintaining, and terminating a connection.
• DCE has signaling and coding.
• The process of communicating information in a binary form in which data will be translated into a special code of transmission is known as Data Circuit.
• Combined Applications involve hybrid applications.
• Message Switching involves email.
• There are seven parts of a data circuit: Data Terminal Equipment (DTE), The Interface between Data Terminal Equipment (DTE) and Data Communication (DCE) at point A, Data Communication (DCE) at point A, Transmission between point A to point B, The Data Communication (DCE) at point B, The Data Communication-Data Terminal Equipment (DCE-DTE) interface at point B, and The Data Terminal Equipment (DTE) at point B.
• Data from a source is sent through the transmission system using digital bits stream then the transmission system converts this data into a signal and sends it to the transmission system's end with an analog signal.
• The transmission system's end then sends this signal using an analog signal to the receiver which converts the signal into data and sends it to the destination.
• Data Terminal Equipment (DTE) includes all data processing equipment.
• What are the 7 online systems requirements

  Performance, Consistency, Flexibility, Availability, Reliability, Recovery, Security