Suppose a repetition code with every bit repeated 5 times is used to send amessage and the received message is11111 00111 11000 00001.Which of the following do you think is the original codeword sent?O 11111 11111 00000 00000O 11111 00111 11000 00001.O 11111 00000 00000 00000O 11111 1111111111 11111

logic implemented:- In incorrect code, correction is done based on probability of no of 1 or 0 00111…

Answered: Suppose a repetition code with every…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Q6. Four bits are adequate to encode 16 possible messages i.e., Mo.Mı5. Msg | code 0000 0001 Msg | code Mo M3 1000 Mg M10 1001 M2 M3 M4 1010 1011 1100 0010 0011 0100 M5 M6 M7 M12 M13 M14 M15 0101 1101 0110 0111 1110 1111 a. Suppose you need to send 38 messages, each of which can be one of the 16 possibilities (as above), On average 75% of the messages is M11, How many bits are required to send those 38 messages? b. Suppose you need to send 50 messages, each of which can be one of the 16 possibilities (as above), On average 20 of the messages are M11, 15 of the messages are M6 and 15 of the messages are M10, How many bits are required to send those 38 messages? c. Suppose you need to send 38 messages, each of which can be one of the 16 possibilities (as above), On average 75% of the messages is M11, How many bits are required to send those 38 messages?
Consider the two sixteen bit numbers: 10110100 01000110 11001000 01101110 ↳ Compute the Internet Checksum of these two values Enter the 2 bytes each as an 8-bit number with only O's and 1's, and make a single blank space between the two 8-bit numbers (e.g., 01010101 00101000).
Suppose that the received word after applying repetition code where every bit is repeated thrice is given by D(r) = 111 000 010 111 000 110 111 111. Which of the following corresponds to the original message sent? O 10110011 O 10110111 O 10010011 O 10010111
For the following message encoded in 8-bit extended ASCII. What does it say? 01010111 01101000 01100101 01110010 01100101 00100000 01100001 01110010 01100101 00100000 01111001 01101111 01110101 00111111
Given the codeword=01110101111101010, find if it has an error bit or none. If it has an error bit, indicate the bit position. Data message has 12 bits.
Suppose you have a 4-letter alphabet {A, B, C, D} and you wish to devise a binary code (with nospaces) for this alphabet such that no two words would be encoded the same. For example, if A = 1and B = 11, then AA and B would be encoded the same. It takes one second to transmit eachcharacter of the binary code (so, 101 would take 3 seconds and 110101 would take 6 seconds).(a) If each letter occurs with the same frequency, determine the most efficient code for the alphabetand explain why it is the most efficient.(b) Now suppose letter A occurs about 40% of the time, B and C both occur about 25% of thetime each, and C occurs about 10% of the time. Determine the most efficient code and explainwhy it is the most efficient.
Suppose the sender wants to send the word world. In ASCII, the five characters are coded as 1110111 1101111 1110010 1101100 1100100 W 1 d. What would the sender transmit if even parity is used for each letter? b. What would the sender transmit if Hamming code is used? а.
A sender sends binary data 101011111001110. The checksum has eight bits length, what is the checksum that should be sent?
Suppose the sender wants to send the word Midterm. In ASCII the seven characters are coded as 1101001 1001101 1100100 1110100 1100101 1110010 1101101 Calculate the row parity bit and column parity bits of data and also show the data to be sent after applying redundancy.
Suppose you have the following 2 bytes: 01011100 and 01100101. What is the 1s complement of the sum of these 2 bytes?
Given the codeword set 111111 000111 110001 101100 011010 If you receive 011011 and you assume at most one bit of corruption, what was the original message?
A binary code uses ten bits to represent each of the ten decimal digits. Each digit is assigned a codeof nine 0’s and a 1. The code for digit 6, for example, is 0001000000. Determine the binary code forthe remaining decimal digits.

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