Computer Science

Overview:In this assignment, you will compare and contrast components of an operating system and general application concepts and uses.Instructions:Chapter 4 of your textbook includes a lab. You are not required to complete the lab but evaluate your computer environment to determine whether you can complete the lab.In step 1 of the lab, you are directed to a website for the Virtual Box application. Open the End-user documentation, which defines what hardware and host OS environments are supported.• Use the OS utilities discussed in the chapter to determine whether your system can support Virtual Box. o Show your system’s CPU and whether it supports virtualization. If your OS utilities do not show your CPU’s virtualization capabilities, go to the manufacturer’s website, and find the technical specs. o Show your system’s memory. o Show your system’s Hard Drive space available.• Include screenshots and narrative to support your conclusion regarding your system: does it support virtualization/can you run Virtual Box? Explain why or why not. If your system can support Virtual Box, try installing it and completing the lab. Requirements:• Submit a Word document in APA format.• Two-three pages in length, excluding the Title and Reference pages.• At least two resources. Be sure to read the criteria below by which your work will be evaluated before you write and again after you write.

How do you believe an organization should measure information system success and satisfaction in the enterprise?

Analyze the history of Caesar Cypher and its impact on cryptography.

Data analysis and summary are requiredPlease use data analysis software for data analysis, complete data analysis and conclusions, and put forward corresponding suggestionsproject showed in the file belowanswer (a) and (b)

Program with multiple threads/processesSubmission Instructions1. Submit two files for each problem: 1) your C program, and 2) a screenshot in jpg format showing that your program really works.2. Name your scripts using the pattern NJITID#_Problem#.c, and name your screenshots using the pattern NJITID#_Problem#.jpg. NJITID# is the eight-digit NJIT ID (Not your UCID, Rutgers students also have NJIT IDs). Problem# is the problem number (e.g., 1, 2, 3, 4etc).3. Submit individual files. DO NOT SUBMIT A ZIP FILE.Objectives1. To learn how to divide computation tasks and distribute tasks into different threads/processes.2. To learn how to solve problems using multiple threads, particularly how to synchronize the execution of threads to avoid race condition.2. To learn how to solve problems using multiple processes, particularly how to exchange data between processes.3. To gain more experience with accessing files using memory mapping.Problem 1: Write a program that creates multiple worker threads to calculate the sum of float point values saved in a file. Each thread calculates a partial sum, and the main thread adds up the partial sums. Your program will read the float point values from a file and print out the sum on the screen. The number of worker threads, as well as the file containing the float point values, are specified in the command line. For example.problem_1 4 ./file_containing_valuesYou may use gendata.c attached with the assignment to generate the file. Your main thread can memory-map the file, such that the worker threads can access the float point values in the file easily.Problem 2: Write a program that creates multiple processes to multiply two matrices of float point values. One matrix is saved in a file. The other matrix is an identity matrix (https://en.wikipedia.org/wiki/Identity_matrix) of the same size. Your program should save the product matrix into another file. Because the product should be the same as the first matrix, you can easily check whether your program produce correct results by comparing the product matrix against the first matrix. Use cmp command to compare (https://linux.die.net/man/1/cmp).The number of processes, the file containing the first matrix, and the file saving the product matrix, should be specified in the command line. The identity matrix should be generated dynamically ( determine the size based on the size of the input file (i.e., the one containing the first matrix)).problem_2 4 ./file_containing_one_matrix ./file_saving_product_matrixYou may use gendata.c attached with the assignment to generate the file for the first matrix. To ensure correctness, your program can assume that each matrix is square (NxN). So, when you generate the input file, ensure that the number of float point values in the file is a square number (https://en.wikipedia.org/wiki/Square_number).To check the results, use cmpcmp ./file_containing_one_matrix ./file_saving_product_matrixRead manual of cmp for more on how to use it (https://linux.die.net/man/1/cmp).Hint:Your processes can memory-map the files to share data easily.Refer to the multi-threaded matrix multiplication program in the slides for how to multiple two matrices in parallel.Problem 3: Write a program that create multiple processes to calculate an approximation of ?. Refer to the multi-threaded program calculating an an approximation of ? in the slides. The number of processes and the number of terms required to calculate the approximation should be specified in the command line (refer to the program in the slides). You may choose an IPC method (pipe, FIFO, or shm) you like in your implementation. But, pipe fits most. FIFO and shm are over-kills.

Given numsList: 79, 45, 60, 32, 55, 24. In this doubly-linked list, the operation that will insert the 5 node after position 2 is ?The ListTraverseReverse operation can only be used with doubly-linked lists.TrueFalseIn a singly-linked list, what is the behavior of Prepend if the list is not empty?Nothing is prepended.The algorithm points the new node’s next pointer to the head node, and then points the list’s head pointer to the new node.The algorithm points the list’s head and tail pointers to the new node.A singly-linked list is a data structure where:

Communicating computer issues with others requires a level of proficiency with images and words. In this assignment, you will need to access your computer’s process management utility and select a running process to evaluate (do not select a running application). Provide a screenshot in your initial post showing your computer’s Task Manager (or Activity Monitor) and the running process you are evaluating. Research online what that process is, what it does, and why it is (or isn’t) necessary to make your computer work the way you need (or want). Based on your research and your needs, conclude whether to manage that process by keeping it running or stopping it. Describe how you would stop it and keep it stopped for your operating system.

Research PAPERIndustry experts believe blockchain is a technology that has the potential to affect the business of most IT professionals in the next five years. Pick an industry you feel will be most affected by blockchain and how blockchain may be used in that industry. As an IT manager, how would you embrace blockchain? For instance, how would training occur for your team, what strategies might you use, what security methods may you recommend be used?Your paper should meet the following requirements:Be approximately four to six pages in length, not including the required cover page and reference page.Follow APA7 guidelines. Your paper should include an introduction, a body with fully developed content, and a conclusion.Support your answers with the readings from the course and at least two scholarly journal articles to support your positions, claims, and observations, in addition to your textbook. The UC Library is a great place to find resources.Be clearly and well-written, concise, and logical, using excellent grammar and style techniques. You are being graded in part on the quality of your writing.At least 5 references.

For this assignment, you are to get into the mindset of a reviewer, and to practice the skills of hunting down references to find clarifications and explanations.Find a research paper from the list below; let’s call this Paper 1.Now imagine that you were assigned Paper 1 as a reviewer. The first part of any paper review is a succinct summary (at most two short paragraphs) of the major contributions of the paper. Write that summary. Your summary should be objective; keep your opinions about the paper limited. (An actual paper review would also include your opinions about the paper after the summary, but they will not be a part of this assignment.) Your summary should also be easy for a program committee member / editor to read. Remember that even if they have more general expertise, they know less about the paper than you do!Identify and explain the major components of the paper , using up to one full page. Again, your summary should be objective and easy for an inexpert editor / program committee member to read. (Imagine you six months ago.)Skim the rest of the paper to get a general idea of what is going on, and then read as much detail as you can. Describe where you got lost , using up to one full page. (This is not normally part of a review.) Include enough context that your point of confusion is clear to someone who is not familiar with the paper. If you can’t figure out the major contributions of the paper, start over with a different Paper 1. If you never get lost, start over with a different Paper 1.Identify another paper that would help enhance your understanding of Paper 1; let’s call this Paper 2. This could be a paper that Paper 1 cites, a paper that cites Paper 1, or just a result of your mad googling skills. Read Paper 2, first skimming to get a general idea of its content, and then trying to read as much detail as you can. Briefly summarize paper 2, describe its connection to where you got lost in paper 1, and describe where you got lost in Paper 2. Use up to one full page.Repeat the previous step one more time. Identify yet another paper that would help your understanding of Paper 2; let’s call this Paper 3. Read Paper 3. Briefly summarize Paper 3, describe its connection to where you got lost in previous papers, and describe where you got lost in Paper 3. Use up to one full page. Altogether, your writeup should be roughly 3–5 pages long. Don’t forget to properly cite the papers you read (and any other papers that you reference in your writeup).

The purpose of this assignment is to help you identify essential elements of research studies. As such, the items required in the assignment are gauged on a performance and nonperformance scale only. In other words, you will be graded based on your ability to locate and articulate an understanding of six core items and provide the information in a formal paper using APA style and format.You will prepare an evaluation of the Doherty, Ashurst, and Peppard article (linked in Resources).The six core elements in the article are:Problem Statement.Describe the problem under examination.Describe how the problem represents some gap in the knowledge base.Academic Justification.Describe theauthors’ justification for researching the problem.Literature Review.Provide a summary of the critical authors writing in the field as identified by the authors of the article.Research Questions.Provide the specific research question or questions of the study.Methodological Choice.Describe the methodological choice (for example, qualitative or quantitative case study) and the justification of the methodology.Discussion.Explain the key findings for the research study.Explain how the limitations of the study can be a springboard for future research.Assignment RequirementsYour paper must meet these minimum requirements:Each of the six core elements is addressed and accompanied by appropriate APA citations.Written communication is free of errors that detract from the overall message.Layout, writing, resources, and citations are formatted according to current edition APA style and format.Cover page, body of paper, and resource or reference list in an MS Word document are included.The paper contains 3–5 double-spaced pages, excluding the cover page and reference list.The type is set in 12-point Times New Roman.