GCSE - Comms and Networking: Error Detection

Descrição

Checksum, check digit and parity check practice for GCSE Computer Science
Henry Deane
Quiz por Henry Deane, atualizado more than 1 year ago
Henry Deane
Criado por Henry Deane aproximadamente 6 anos atrás
36
0

Resumo de Recurso

Questão 1

Questão
The sequence of numbers 8,3,6,1,9,0,2,4 produces the checksum of [blank_start]33[blank_end]
Responda
  • 33

Questão 2

Questão
The sequence of numbers 1,6,7,3,9,4,5,2 produces the checksum of [blank_start]37[blank_end]
Responda
  • 37

Questão 3

Questão
The sequence of numbers 5,0,9,9,7,5,6,8 produces the checksum of [blank_start]49[blank_end]
Responda
  • 49

Questão 4

Questão
Using modulo 11 the sequence of numbers 8,3,6,1,9,0,2,4 produces the check digit of [blank_start]0[blank_end]
Responda
  • 0

Questão 5

Questão
Using modulo 11 the sequence of numbers 1,6,7,3,9,4,5,2 produces the check digit [blank_start]4[blank_end]
Responda
  • 4

Questão 6

Questão
Using modulo 11 the sequence of numbers 5,0,9,9,7,5,6,8 produces the check digit of [blank_start]5[blank_end]
Responda
  • 5

Questão 7

Questão
Using modulo 11 the sequence of numbers 9,11,2,18,21,5,23,31 produces the check digit [blank_start]X[blank_end]
Responda
  • X

Questão 8

Questão
In a parity check the least significant bit is used for the parity bit, this is the [blank_start]first[blank_end] bit on the [blank_start]right[blank_end]
Responda
  • first
  • right

Questão 9

Questão
Using even parity the parity bit is [blank_start]1[blank_end] for the sequence of binary 0 1 0 1 1 0 0
Responda
  • 1

Questão 10

Questão
Using even parity the parity bit is [blank_start]0[blank_end] for the binary sequence 1 0 0 1 0 1 1
Responda
  • 0

Questão 11

Questão
Using even parity which of the following three 8 bit binary numbers has been transmitted incorrectly?
Responda
  • 0 1 0 1 1 0 0 1
  • 0 0 1 0 1 1 0 1
  • 1 0 0 1 0 0 0 1

Questão 12

Questão
Using negative parity which of the following three numbers has been incorrectly transmitted?
Responda
  • 0 1 0 1 1 0 0 1
  • 1 0 0 1 0 0 0 1
  • 0 1 0 0 1 1 1 1

Questão 13

Questão
Using positional numbers that are even and modulo 11 the check digit for the following sequence of numbers is [blank_start]X[blank_end] positions in even numbers: 2 4 6 8 10 12 14 16 sequence of numbers: 5 0 9 9 7 5 6 9
Responda
  • X

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