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- On a 16 GB hard disk drive (HDD), each cluster consists of 32 sectors and each sector has a fixed size of 512 bytes. A text file with a size of 150,000 bytes is to be stored. a. i.What is the size of the slack space, in bytes, once the file has been stored?76. To ensure that the hold and wait condition never occurs in the system, it must be ensured that : a. whenever a resource is requested by a process, it is not holding any other resources b. each process must request and be allocated all its resources before it begins its execution c. a process can request resources only when it has none d. all of the mentionedIn the field of computer science, please state the seven factors that should be used to choose the best file organizing system.
- 5. What are the allocation methods of a disk space?Consider a file system such as the one on your favorite operating system.a. What are the steps involved in the creation and deletion of files and inwriting data to a file?b. Explain how the issues of atomicity and durability are relevant to thecreation and deletion of files and to writing data to files.104. The process to be aborted is chosen on the basis of the following factors : a. priority of the process b. process is interactive or batch c. how long the process has computed d. all of the mentioned
- Question 3 Assume you have a file of 10 records (identified as A, B, C, . . . J) to be stored on a disk that holds 10 records per track. Once the file is stored, the records will be accessed sequentially: A, B, C, . . . J. It takes 1 ms to transfer each record from the disk to main memory. It takes 2 ms to process each record once it has been transferred into memory and the next record is not accessed until the current one has been processed. It takes 10 ms for the disk to complete one rotation. Suppose you store the records in the order given: A, B, C, . . . J. Compute how long it will take to process all 10 records. Break up your computation into (1) the time to transfer a record, (2) the time to process a record, and (3) the time to access the next record. Provide 3 advantages and 3 disadvantages of Virtual memory management. Given that main memory is composed of two page frames for public use and that a seven-page program (with pages A,B, C, D) requests pages in the…(a) What is involved in low-level formatting of a disk (HDD)? (d) A file consists of 20 disk blocks (numbered O to 19). Assume that file control block and directory are already in the memory. A block is to be inserted in the middle of the file (as 10th block). How many disk read and how many disk write I/'O operations are needed if contiguous allocation scheme is used by the file system ? ReplyForwardExists a distinction between the two modes that may be used by an operating system and the two primary functions that can be carried out by an operating system? What are some of the most significant functions that are carried out by the file system?
- 23. A file system with 300 GByte uses a file descriptor with 8 direct block address. 1 indirect block address and 1 doubly indirect block address. The size of each disk block is 128 Bytes and the size of each disk block address is 8 Bytes. The maximum possible file size in this file system isDistinguish between indexed file space allocation, linked space allocation, and contiguous disk space allocation.Records from the employee file are to be read and, by making use of the basic pay, allowances and deductions, the total salary is to be computed for each employee. Assume that it takes 200 µs of CPU time to perform the computation for a single record. The updated records are to be written onto the disk. a) What is the time taken to process all records in a cylinder? Illustrative problem (a) computed the time taken to process all records of the employee file residing in a cylinder. Assume that the time taken for the read/write head to move from one cylinder to another is 10 ms.b) What is the time taken to process all records in the next cylinder?c) What is the time taken to process the entire employee file of records on the disk? b)