4. Consider the following table where a source 5 with 4 symbols has been encoded in binarycodes with 0 and 1. Identify which code is uniquely decodable and which code isinstantaneous (or prefix).Symbol Sis1s2s3s4Code 100011011Code 2010011Code 3010110111Code 40010110111

Answered: Image /qna-images/answer/9c4a36ab-1bcb-4197-b30d-28f2a7bbde64.jpg

Answered: 4. Consider the following table where a…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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1. Reorder the four lines and properly indent the following code so that the program correctly prints x and its values on separate lines such that the output is: x 4 x6 x 8 x 10 You should run your code in Python Tutor before submitting your answer to make sure it does what you think it should. 1 x + 2 2 while x Check syntax
A user is allowed to create an 8-digit password, but it must satisfy the following requirements: The first 2 spots must be different letters of the alphabet (case is not sensitive) The next 4 spots must be different numbers from the set {0-9} The last 2 spots must be different non-alphanumeric symbols from the set {# , @, $,%} How many passwords are possible?
3. Consider a binary code with 5 bits (0, 1 or 2) in each code word. An example of a code word is 01220. (a) How many different code words are there? (b) How many code words have exactly two zeroes? (c) How many code words begin with a zero? (d) Determine the number different code words of length 8 with 3 zeroes and 5 ones.
2. Consider 10-character alphanumeric passwords (that is, made up of letters of the English alphabet, either lowercase or uppercase, and decimal digits). How many such that contain at least one lowercase letter, at least one uppercase letter, at least one digit, but do not contain your birthday in the format ddmmyyyy. (E.g. my birthday is 06091978 so I should not count the password A06091978x.)
Each character in a password is either a digit [0-9] or lowercase letter [a-z]. How many valid passwords are there with the given restriction(s)? The length is 17.

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4. Consider the following table where a source 5 with 4 symbols has been encoded in binary codes with 0 and 1. Identify which code is uniquely decodable and which code is instantaneous (or prefix). Symbol St s1 s2 s3 s4 Code 1 00 01 10 11 Code 2 0 1 00 11 Code 3 0 10 110 111 Code 4 0 01 011 0111