Suppose that a disk unit has the following parameter: block size B = 1200 bytes Consider a STUDENT file with the following fields: NUMBER, 10 bytes; • LASTNAME, 20 bytes; FIRSTNAME, 20 bytes; BIRTHDATE, 10 bytes; The STUDENT file has r=10000 STUDENT records, fixed-length format, and unspanned blocking. Calculate the following values for the STUDENT file: (a) Calculate the record size R (b) Calculate the blocking factor bfr (c) Calculate the number of disk blocks b
Q: What are the most significant gains from operating system abstraction?
A: Introduction: An OS connects users to hardware. Explanation: OS features include: Operating systems…
Q: Information system analysis is a separate but complementary approach to the development process.
A: Information system analysis is a distinct yet supplemental approach to the development process. It…
Q: To what extent does Structure allow for customization?
A: Structure variables: Structure variables are user-defined data types that enable an the combination…
Q: As opposed to other operating systems, Linux contains all available methods for concurrent…
A: In software engineering, concurrency refers to a collection of techniques and processes that enable…
Q: Specify different methods that may be used to take over a user's session. What countermeasures might…
A: An attacker may hijack a user's session using a number of strategies: Session hijacking:Hijacking…
Q: Your explanation of the inner workings of one of the cache protocols would be very appreciated.
A: I am going to talk about the MESI Protocol: The MESI Protocol is currently the cache coherence…
Q: 1. Consider the following relation schemas: Department (dnumber, dname, employee count), PK:…
A: Dear Student, The answer to your question is given below -
Q: Why do companies need security, and what are the ramifications of not providing security, from a…
A: Introduction : Security in companies is the practice of protecting sensitive company information,…
Q: The issue is not whether the iterative and incremental approach and the waterfall approach are…
A: One of the most popular and straightforward models used in software development is the waterfall…
Q: Remove 18 and 60 from the B-tree (2-3-4 tree, to be exact) below. Detail each step. 0025- 0004…
A:
Q: The article differentiates between the internet and the world wide web.
A: In simple terms, the World Wide Web(WWW) is just one common area for the information exchange,…
Q: You'll get more out of social media if you spend more time on it. The benefits of autonomous…
A: SNS (also called a social networking site) is an online platform that allows users to build social…
Q: Describe the distinctions between online transaction processing (OLTP) and data warehousing (DWH)…
A: In this question we need to explain differences between online transaction processing (OLTP) and…
Q: Think about the impact cellular networks may have on developing economies. Why do some companies,…
A: Families with many electronic devices, including PCs, laptops, and other mobile devices, use them…
Q: So, what are we hoping to accomplish with this verification procedure? Examine the benefits and…
A: Definition: The process of confirming that someone or something is, in fact, who or what it claims…
Q: 4. A={3,4}, B={4,5}. An B= AUB= A-B= A OB= AXB=
A: 1. A ∩ B means intersection of set A and set B 2. AU B means union of set A and set B 3. A-B means…
Q: OR JAVA Write a class about a book which has following properties: • isbn • price • title In a…
A: Tester.java public class Tester { public static void main(String[] args) { Book b1= new…
Q: This is where you should provide a brief overview of the two features generally agreed upon as being…
A: Introduction: The software that runs on a computer's system is called the operating system.An…
Q: To clarify, what does it imply when we say that someone has a "memory void?" Where does the OS find…
A: Any mechanism for the purposeful Memory voids are when unpleasant or humiliating documents, images,…
Q: Take, for example, a snapshot-isolated database management system like the one employed by an…
A: Consider an airline's snapshot-isolated database. Describe a non-serializable execution that the…
Q: Give one argument for the Turing test being a good test for measuring intelligence.? 2- Give one…
A: 1. The simulation of human intelligence processes by machines, particularly computer systems, is…
Q: It is necessary to describe the variations between FDM and TDM. A one-page report will be much…
A: INTRODUCTION: There are two different kinds of multiplexing techniques: frequency division…
Q: TDM, FDM, and CDM are all multiplexing techniques used at the physical layer. What are the upsides…
A: The answer to the question is given below:
Q: Use mpi4py to write Python code to leverage 4 CPU cores to print out each process Rank and the total…
A: According to the information given:- We have to follow the instruction in order to get use mpi4py to…
Q: Describe the distinctions between online transaction processing (OLTP) and data warehousing (DWH)…
A: The answer to the question is given below:
Q: Are Classes and Structures really the same thing, or are there meaningful distinctions between them?
A: the system of class division in society or a group that is based on hierarchy. The overwhelming…
Q: When it comes to memory, what should an OS be responsible for?
A: Given: What is an operating system in charge of memory management? Answer: Operating systems include…
Q: Take into account the following: You get a message from the company's email server asking you to…
A: Phishing is a kind of cybercrime in which an attacker poses as a trustworthy business through email,…
Q: To get started, a database transaction must be initiated. The next time we talk, I want to make sure…
A: In order to initiate a database transaction, you will need to have access to a database management…
Q: Explain how the Internet has changed throughout the years and what technology developments have made…
A: Please find the answer below :
Q: Describe the steps used by a system analyst in examining a piece of software.
A: To be determined: a list of methods that are used by the system analyst while working with software…
Q: Why would a virus author develop a payload that may potentially destroy a computer system? If the…
A: This malware makes use of a payload: A payload in cybersecurity is malware that the threat actor…
Q: A neighbourhood bank could employ one of three types of servers
A: As there are many types of servers used by the bank: Servers: This is the server that runs the…
Q: LA GSM system uses 124 channels and each channel is divided into 8 time slots. What is the maximum…
A: GSM (Global System for Mobile communication): In Europe and other areas of the world, many…
Q: Identify the two schools of thought that are at odds with one another in the current state of…
A: Given: Describe the two contradictory theories that exist today about how operating system kernels…
Q: How can employing a billing programme benefit your business?
A: Please refer to the following step for the complete solution to the problem above.
Q: 5.5 can be represented in binary as
A: A computer is a digital electronic machine that can be programmed to automatically perform a series…
Q: Write a report about Blockchain technology in Latex overleaf IEEE form..
A: Blockchain Technology Introduction Blockchain has gotten extensive attention since it was…
Q: What do you name the OS components that reside inside the RAM of a computer? If these parts were put…
A: architectural design's significance in software development In the context of software development,…
Q: Is the waterfall approach useful for SDLC, and if yes, how broadly? When it comes to spiral models,…
A: This is the response to your query: Answer: The linear-sequential life cycle model, sometimes…
Q: Multiprocessor systems are advantageous because of the plethora of options they provide their users…
A: Introduction: The following is a list of the benefits that the multiprocessing system offers:…
Q: Is it more likely that the hardware failed when you turned on the computer for the first time…
A: The acronym "CPU" stands for - "Central Processing Unit," which is comparable to the computer's…
Q: When an error occurs, how does the DHCP protocol handle it?
A: in the following section we will learn about when will error is raised in DHCP and how DHCP control…
Q: Where do you start when defining authentication's aims? Evaluate the different authentication…
A: Authentication is used when a server wants to know who is accessing its information or website but…
Q: To what extent do these concerns stem from the design? One may often only use one kind of variable…
A: The answer to the question is given below:
Q: How does authentication contribute to our success? We'll look at the benefits and drawbacks of many…
A: Dear Student, The answer to your question is given below -
Q: Think about how you can use mobile devices like tablets and smartphones in your organisation.
A: Mobile devices are now essential to many firms' daily business operations. Using cloud technology,…
Q: How does a password manager store its encrypted passwords, and what type of format does it use? A…
A: 1. The study of secure communication techniques that allow only the sender and intended recipient of…
Q: Kindly elaborate on the software development process metrics used. Don't be shy about going into…
A: Software engineering applies engineering ideas to software manufacturing. Software engineers design,…
Q: Provide an explanation for the straight curvature of an LCD computer monitor's display.
A: Explain why the form of a computer's LCD display screen is flat. These monitors are compact and need…
Suppose that a disk unit has the following parameter:
- block size B = 1200 bytes
Consider a STUDENT file with the following fields:
- NUMBER, 10 bytes; • LASTNAME, 20 bytes;
- FIRSTNAME, 20 bytes;
- BIRTHDATE, 10 bytes;
The STUDENT file has r=10000 STUDENT records, fixed-length format, and unspanned blocking. Calculate the following values for the STUDENT file:
(a) Calculate the record size R
(b) Calculate the blocking factor bfr
(c) Calculate the number of disk blocks b
Step by step
Solved in 2 steps
- A file has r = 20, 000 STUDENT records of fixed length. Each record has the following fields: NAME (30 bytes), SSN (9 bytes), ADRESS(40 bytes), PHONE(9 bytes), BIRTHDATE (8 bytes), SEX(1 byte), CLASSCODE( 4 bytes, integer) MAJORDEPTCODE(4 bytes), MINORDEPTCODE(4 bytes), and DEGREEPROGRAM( 3 bytes). An additional byte is used as a deletion marker. Block size B = 512 bytes. a) Calculate the blocking factor bfr (=floor(B/R), where R is the record size) and number of file blocks b, assuming unspanned organization (a record can’t be split across blocks). b) Suppose only 80% of the STUDENT records have a value for PHONE, 85% for MAJORDEPTCODE, 15% for MINORDEPTCODE, and 90% for DEGREEPROGRAM. We use a variable-length record file. Each record has a 1-byte field type for each field in the record, plus the 1-byte deletion marker and a 1-byte end-of-record marker. Suppose that we use a spanned record organization, where each block has a 5-byte pointer to the next block (this space is not used…A sorted file has the following details: Number of records = 13,10,720; record length = 200 bytes; size of the primary key field = 13 bytes; size of block pointer = 7 bytes; block size = 2048 bytes. For this file, we need to build a multi-level index on the primary key. The number of blocks in the first level index file isInstructions Your job is to write a program to encrypt outgoing messages and decrypt incoming messages using a Vigenere Cypher. In this assignment, you will parse a string of words from a file into tokens using the strtok_s command with pointers and then use the Vigenere Cypher algorithm to encrypt and decrypt the parsed words. Before you can perform any encryption/decryption activities, the first step is to read in messages from a file and parse the messages into individual words. The Program: Setting up classes and understanding tokenization The first step in encrypting/decrypting messages is to parse the messages into words before applying the encryption/decryption algorithms to them. This parsing process is called “tokenization.” Read the contents of a file into this array using the getline command. The objective of this assignment is to demonstrate the use of pointers in a program utilizing c-strings and tokenization. The use of pointers is foundational in C++. This…
- In a contiguous allocation, if the file has n blocks long and starts at location b, the starting and last blocks being occupied by the file is ___ respectively. a. b and b + n - 1 b. n and b + n + 2 c. b and b + n d. n and n + b -1With linked allocation, each file is a linked list of disk blocks; the disk blocks may be scattered anywhereon the disk. The directory contains a pointer to the first and last blocks of the file. Each block contains a pointerto the next block. Refer to the illustration below. Need help to fill in the codes in void main() --- #include<stdio.h>#include<stdlib.h>#define TOTAL_DISK_BLOCKS 32#define TOTAL_DISK_INODES 8int blockStatus[TOTAL_DISK_BLOCKS]; // free = 0int blockList[TOTAL_DISK_BLOCKS - TOTAL_DISK_INODES]; // list of blocks of a filestruct file_table {char fileName[20];int fileSize;struct block *sb;};struct file_table fileTable[TOTAL_DISK_BLOCKS - TOTAL_DISK_INODES];struct block {int blockNumber;struct block *next;};int AllocateBlocks(int Size) {---}void main(){int i = 0, j = 0, numFiles = 0, nextBlock= 0, ret = 1;char s[20]; struct block *temp;---for(i = 0; i < numFiles; i++) {---ret = AllocateBlocks(fileTable[i].fileSize);---}---//Seed the pseudo-random number…HMM Viterbi MLS Calcucation Write a program named hmm_viterbi that takes two command-line arguments: a model file name and a text file name that contains a single untagged sentence. This program should load the given model, then use the viterbi algorithm to find the most likely POS tag sequence for the given sentence.
- A file has r=20000 STUDENT records of fixed-length. Each record has the following fields: NAME (30 bytes), SSN (10 bytes), ADDRESS (40 bytes), PHONE (9 bytes), BIRTHDATE (8 bytes), SEX (1 byte), MAJORDEPTCODE (4 bytes), MINORDEPTCODE (4 bytes), CLASSCODE (4 bytes, integer), and DEGREEPROGRAM (3 bytes). Suppose the block size is 512 bytes. (a) Calculate the record size R in bytes. (b) Calculate the blocking factor (number of tuples per block) and the number of blocks required. (c) Calculate the average block accesses it takes to find a record by doing a linear search on the file. (d) Assume the file is ordered by SSN; calculate the block accesses takes to search for a record given its SSN value by doing a binary search.1:34 b a 2. Different operating systems use different file allocation techniques to store files in the secondary storage device such as HDD. One of the techniques is "Linked allocation". In this technique, each file is divided into several data blocks of same size. Each data block has a link to its next block like a singly linked list. So, the data blocks are scattered on the disk. The directory contains a pointer to the starting and the ending data block of a file. The diagram below depicts a sample linked allocation system of a file Abc.txt: Directory entry File Start End Abc.txt 100 900 Data 900 Data Data block 1 block 2 Data block 3 block N Write a Java program to implement the linked allocation of a given text file Assgn1_2.txt (uploaded with the assignment) who's each block will contain maximum 50 characters. Read the content of the given file and store it in data blocks (maximum 50 characters per block). Now show a menu that will ask the user to i) add new content at the end of…This is the most effective file organization method in which one must handle all data records in a file named
- A movie file has the following record structure:name ofthe movie producer director type productioncostAssume that the name of the movie is the primary key of the file. Thefield type refers to the type of the movie, for example, drama, sci-fi, horror, crimethriller, comedy and so forth. Input a sample set of records of your choice into themovie file.i) Implement a primary index-based ISAM file organization.ii) Implement secondary indexes on director, type and productioncost.Structural in-dependence exists when it is possible to make changes in the file structure without affecting the application program's ability to access the data. Select one: True FalseA FAT32 filesystem will not mount, but you have been able to view the data in Hexadecimal format. While recovering file system meta data, you find the creation date of a file in hex: 4519 In human readable format, this date is: