Perl Programming Find thenumber of files with their names with size greater than 2 Kbytes for two directories.
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- Computer Science Generalize program in part (a), assuming that you are given a file that includes the alphabet of a specific language. Your program will accept two variables a and b and does the Affine Caesar Cipher for any plaintext in that specific language.For Heap File with a page directory, assume that a page can contain up to 100 directory entries and a page can contain 1000 records, for a file of 1,000,000 records, what is the number of pages to store these records, assuming that on average data pages are filled up 70%? With this data page utilization, what is the number of pages to store the directory, assuming that each directory page is full? Assuming both the directory and the file are stored on disk, what is the I/O cost to insert one record in worst case, and in the average case?RCS adopts a reverse delta approach for storing multiple versions of a file. For example, assume a file has three revisions, 1.1, 1.2, and 1.3, RCS stores the file as of version 1.3, then, the differences between 1.2 and 1.3, and the differences between 1.1 and 1.2. When a new version is created, say 1.4, the difference between 1.3 and 1.4 is computed and stored, and the 1.3 version is deleted and replaced by 1.4. Explain why RCS does not simply store the initial version (in this case 1.1) and the differences between each successive version.
- Consider finding a prefix code for a file that consists of the letters a, b, c, d, and e. Suppose that these letters appear in the file with the following frequencies. f(a) = 20; f(b) = 7; f(c) = 10; f(d) = 4 and f(e) = 18: Suppose each character was represented by four binary digits before compression. What is the total number of bits utilized by the data before compression? Apply the Huffman Encoding technique to compress the data and find the total number of bit required to represent the complete file after compression. What is percentage of space saved by the compression technique?Write a Python program that expects as arguments any number of pathnames of UTF-8 encoded files, and indicates the mean number of bytes per character in the content of each one8. A security system is used to encrypt the password of a cryptocurrency wallet (crypto wallet) and generate 10 different codes that the owner of the wallet can copy on 10 papers that he will hide with great care. So if a thief finds 1 of these hidden papers, he will not be able to unlock the wallet. Indeed it would be necessary to have at least 6 (any 6) codes to reconstitute the secret passphrase and unlock the wallet. How is it possible ?
- Write a C program that scans all directories in a UNIX file system and finds and locates all i-nodes with a hard link count of two or more. For each such file, it lists together all file names that point to a file. Explain the key steps in your code and suggest one alternative approach.] In the following problems, check suitable rule (Sum, Subtraction or Product) and compute the total number of possible ways in the entire procedure: The password for a computer account can be 6, 7 or 8 characters in length; the characters can be letters or digits. What is the number of ways a password can be formed? How many bit strings of length sixteen start with a 11 or end with 00?You are the designer of a transfer protocol to send/receive a file between two computers. The sender divides the file into smaller frames to be sent sequentially to the receiver, and there are two options to make sure that receiver receives the file correctly: The sender can send frame n+1 if receives an ACK on frame n from the receiver (e.g., sender receives ACK on frame 2, so will proceed and send frame 3). The sender sends all the frames sequentially and the receiver will send only one ACK if the entire file is received successfully. Which approach, from your point of view, is efficient and why - If we have: noisy communication channel (there is high probability of more than one device speak at the same time, high probability of interference). non-noisy communication channel.
- Implement a C program to sort a set of 4-byte float point values in ascending order using radixsort. The values are saved in a file. After sorting, the original file should still save the sorted values. Your program must access the file using memory mapping.Consider the bitmap representation of the free-space map, where for eachblock in the file, two bits are maintained in the bitmap. If the block is between0 and 30 percent full the bits are 00, between 30 and 60 percent the bits are01, between 60 and 90 percent the bits are 10, and above 90 percent the bitsare 11. Such bitmaps can be kept in memory even for quite large files.a. Outline two benefits and one drawback to using two bits for a block,instead of one byte as described earlier in this chapter.b. Describe how to keep the bitmap up to date on record insertions anddeletions.c. Outline the benefit of the bitmap technique over free lists in searchingfor free space and in updating free space information.Money Transfer Max. score: 100 SeaMoney has a feature to transfer money between users. Let's imagine a simple scenario. N usernames--consisting of lowercase Latin characters-each starts with a balance b. Amongst them, T transactions happened, where user ua transfers x amount of money to ub. If x is larger than the ua's balance when the transaction happens, the transaction is automatically rejected. Output the final balance of each user. Input The first line contains two numbers N and T (1 < N,T < 1000). Each of the next N following lines contain username u; (1< ]u;| < 10) and integer b; (1 < b; < 10°), denoting the balance of user u;. Following that (1SEE MORE QUESTIONS