Basics 6 min read
Cyclic Redundancy Check
Cyclic Redundancy Check (CRC) An error detection mechanism in which a special number is appended to a block of data in…
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Basics 5 min read
Hamming code
Hamming Code in Computer Network Hamming code is a set of error-correction codes that can be used to detect and correct…
Basics 4 min read
Delta modulation (Dm)
The sampling rate of a signal should be higher than the Nyquist rate, to achieve better sampling. If this sampling…
Basics 3 min read
Pulse code modulation (PCM)
Pulse code modulation (PCM) Modulation is the process of varying one or more parameters of a carrier signal in accordance with the…
Basics 4 min read
Analog to Digital Conversion
Digital Signal: A digital signal is a signal that represents data as a sequence of discrete values; at any given time…
Basics 5 min read
Subnet Masks
An IP address has two components, the network address and the host address. A subnet mask separates the IP address into the…
Basics 10 min read
Types of Line Coding
I. Unipolar Scheme: In a unipolar scheme, all the signal levels are on one side of the time axis, either…
Basics 5 min read
Line coding
Line coding refers to the process of converting digital data into digital signals. Whenever we transmit data it is in…
Basics 5 min read
Data encoding
Encoding is the process of converting the data or a given sequence of characters, symbols, alphabets etc., into a specified format,…
Basics 1 min read
Transmission Medium
Transmission Mediums in Computer Networks Data is represented by computers and other telecommunication devices using signals. Signals are transmitted in…