COMPUTER NETWORK

2.  A code C is Cyclic.
 A cyclic code is a block code.
 Where the circular shifts of each codeword gives
another word that belongs to the code.
 They are error correcting codes that codes that have
algebraic properties that are convenient for efficient
error detection and correction

4.  This method is used in the networking
 This method is used to check the error
message.
 An error detecting code commonly used in
digital networks and storage devices to detect
accidental changes to raw data.

5.  An encoder is an electronic device used to convert an
analogue signal to a digital signal.
 It has a number of input lines, but only one of the
inputs is activated at a given time and produces an N-
bit output code that depends on the activated input

6.  A decoder is a device which does the opposite
of an encoder.
 It undoes the encoding so that the original
information can be obtained.
 The same method used to encode is usually
again in reverse order to decode.

8.  A hardware implementation means that the job
is done using a physical device or electronic
circuit as opposed to being done by a computer
program.
 A hardware implementation often takes longer
to create and that can make it more expensive.

10.  A mathemaitcal expression of one or more algebraic
terms each of which consists of a constant multiplied
by one or more variables raised to a nonnegative
integral power(such as a +bx=+cx)
 Multiplying two polynomial
 Diving two polynomial

11.  Multiply two terms together you must multiply
the coefficient(numbers) and add the
exponents.
1. Step1:Combine like terms
2. Step2:distribute each terms of the first to
every term of the second polynomial

13.  Polynomial long division is an algorithm
for dividing a polynomial by another
polynomial of the same or lower degree.
 A genralised version of the familiar
arithmetic technique called long division

15.  A burst error or error burst is a contiguous
sequence of symbols, received over a
communication channel.
 Such that the first and last symbols are in error
and there exists no contiguous subsequence of m
correctly received symbols within the error burst

17.  A checksum is a count of the number of bits in a
transmission unit that is included with the unit so that the
receiver can check to see whether the same number of bits
arrived.
 If the counts match, it’s assumed that the complete
transmission was received.
 TCP and UDP communication layers provide a checksum
count and verification as one of their service.