Network types and characteristics OSI model

Question 1

transition modulation

Answer 1

transition modulation. One way to electrically or optically represent a binary 1 or 0 is to use the transition between a voltage level.no voltage means 0 and +5 or -5 represents 1.also works with fiber no light is 0 and light is 1

Question 2

OSI

Answer 2

(Open Systems Interconnection (OSI) reference model) Commonly referred to as the OSI model or the OSI stack . This seven-layer model categorizes various network technologies. It is a way to organize network components.

Question 3

asynchronous

Answer 3

uses start and stop bits to indicate when transmision occu from the sender to the receiver,of or requiring a form of computer control timing protocol in which a specific operation begins upon receipt of an indication (signal) that the preceding operation has been completed.

Question 4

synchronous

Answer 4

uses a reference clock to coordinate the transmissions by both sender and receiver,happening, existing, or arising at precisely the same time,of, used in, or being digital communication (as between computers) in which a common timing signal is established that dictates when individual bits can be transmitted and which allows for very high rates of data transfer