Operating System Questions and Answers April 01, 2020

Q20) (Input / Output) The sequential read operation in hard disks involve two operations: Moving the disk head to the physical location where the data is residing (seek time), and reading the associated blocks continuously (read time). However, while reading the blocks, the data needs to be read in addition to some procesing time (due to error

Q20) (Input Output) The sequential read operation in hard disks involve two operations Moving the disk head to the physical location where the data is residing (seek time), and reading the associated blocks continuously (read time). However, while reading the blocks, the data needs to be read in addition to some procesing time (due to error

Q21) (Input / Output) A personal computer salesman visiting a university in South-West Amsterdam remarked during his sales pitch that his company had devoted substantial effort to making their version of UNIX very fast. As an example, he noted that their disk driver used the elevator algorithm and also queued multiple requests within a cylinder in

Q22) (Input / Output) Disk requests come in to the disk driver for cylinders 10, 22, 20, 2, 40, 6, and 38, in that order. A seek takes 6 msec per cylinder. How much seek time is needed for: (a) First-come, first served. (b) Closest cylinder next. (c) Elevator algorithm (initially moving upward). In all cases, the arm is initially at cylinder 20.

Q23) (Deadlock Detection) Draw the resource allocation graphs for the following process-resource interactions and state whether there is a deadlock or not. (Give the potential resources and processes involved if that is the case). If there are no possible deadlocks, state a possible order of execution. a) Process A holds nothing, wants resource X

Q24) (Deadlock Detection) A system has four processes and five allocatable resources. The current allocation and maximum needs are given in the tables below: (the five numbers represent five resources, in their respective order). Matrix "Allocated" shows the current resources held by the processes. Matrix "Maximum" shows the requested (extra)

MULTIPLE PROCESSOR SYSTEMS SECURITY Q25) (Security) Consider the code below from the textbook: 1 int main (int argc, char *argv[ ] ) { 2 char src[100], dst[100], cmd[256] = "cp "; /* declare 3 character arrays */ 3 printf("Please enter name of source file: "); /* ask for source file */ 4 gets(src); /* get input from the keyboard */ 5 strcat(cmd,

In this task, we will play with various one-way hash algorithms. To see the manuals, you can type man openssl and man dgst. You can use the following openssl command to generate the hash value for a file: openssl dgst dgsttype filename Replace the dgsttype with a specific one-way hash algorithm, such as -md5, -sha1, -sha256, etc. In this task, you

Let A = {A, B, C, . . . , X, Y, Z, +, *, $, @} and t = 4. Choose e = (P1, P2, P3, P4) where P1 maps each letter to the letter three positions to its right in the alphabet, P2 to the five positions to its right, P3 seven positions, andP4 ten-positions to its right. If message (m) = "THISCIPHERISCERTAINLYNOTSECURE" Find out the cipher-text *

Write a python function that accepts and returns an integer ONLY between -7 and +12 from the user.

As pollution is increasing, some large cities have started a project called sharing to reduce the number of cars in the city and also reduce the cost of having a car available when needed by a person. A car is partially owned by several people. A car has an identification, car make, car model car tag and car insurance. The owner has an

At UC, it is a priority that students are provided with strong educational programs and courses that allow them to be servant-leaders in their disciplines and communities, linking research with practice and knowledge with ethical decision-making. This assignment is a written assignment where students will demonstrate how this course research has

Whats the difference between a process starting another copy of itself and starting another thread?

In a FIFO queue, what is the main reason for a process in the middle (or end) of the ready queue to be executed before processes at the start of the queue

Assume that a finite number of resources of a single resource type must be managed. Processes may ask for a number of these resources and will return them once finished. As an example, many commercial software packages provide a given number of licenses, indicating the number of applications that may run concurrently. When the application is

What are the technology that improve or give implications in the psychology field. (5 technology) Definition Importance in psychology Implications in psychology (Bad or good implications)

Assume the existence of two type of tables, where the shorter one is of length X and the longer on is of length Y. A combination of these two types of tables are aligned to fill a given distance D. Using as few tables as possible, find the optimum combination to keep the remaining empty distance is as small as possible. note the first priority is

Discuss 4 implications and issues associated with this rapid growth of data?

Your manager has asked for your input on ideas for how to improve the likelihood of successful adoption of a new information system that members of the companys finance department will use. Explain any 5 ideas you will give him.

What would be the advantages for a university computer lab to install thin clients rather than standard desktop personal computers? Explain any 4. Identify and explain any 4 disadvantages?

5.Identity theft, where people steal personal information, continues to be a problem for consumers and businesses. Assume that you are the database administrator for a corporation with a large database that is accessible from the Web. What steps would you implement to prevent people from stealing personal information from the corporate database?

We've now seen three different was to implement efficient search structures: AVL Trees, Skip Lists, and Hash Tables. All three of these data structures solve fundamentally the same problem: organizing pieces of information based on a unique key used to find it later. Sometimes, they're basically interchangeable; it doesn't always matter which

How to write the formulas of these exercises in ms excel??

C13 C78 D66 B82 B92 B47 B48 D35 B52 C88 B38 C31 C79 D44 B43 B53 B41 C42 B75 C36 D74 B86 B17 B14 B39 C51 B27 D12 C77 C73 D34 D18 C87 B91 B37 C24 Identifier Cylinder capacity 1249 cm3 1195 cm3 1599 cm3 2 995 cm3 1298 cm3 1 195 cm3 2995 cm3 2 995 cm3 2 490 cm3 980 cm3 1 298 cm3 1599 cm3 1995 cm3 1795 cm3 2 995 cm3 1298 cm3 1249 cm3 1599 cm3 2995 cm3

Make a function M-file, name it as myCounter.m which uses three inputs, n3, n2, n1, from the list (2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F). The program then counts out the numbers from 0 to (n3 n2 n1) on the screen. Example: imagine that the user has used the inputs: 2 for n3, 2 for n2, and 3 for n1. Then the program would print out a counter

A byte addressable computer has a small data cache capably of holding eight 32 bit words. Each cache block consists ofd one 32-bit word. When a given program is executed, the processor reads data sequentially from the following hex addresses 200, 204, 208, 20C, 2F4, 2F0, 200, 204, 218, 21C, 24C, 2F4, This pattern is repeated four times. a) Assume

VHDL code for a machine help trying to build a security system. I should set up a password for your protection device as a user. I will arm the security system while you are leaving your building. If the device is protected, I need to insert the appropriate password to unlock the protection system when I return and enter the building. I'll have 30

Identify several advantages and several disadvantages of open-source operating systems.

Question 2 An Intel 8031 (IC A) is to be connected to a 128 kBit Data RAM (IC B), 128 kBit DataProgram RAM (IC C), 128 kBit Program ROM (IC D), using gates ONLY. The memory map of the design is as follows IC B IC C IC A FFFF H C000 H BFFF H 8000 H 3FFF H 0000 H 1. Draw the full connection diagram of the design. Label your IC AD. Add and label

How would you analyze the framework of online learning system for your own program by considering the following main items: Institutions core business and values. The nature of the intended student market. The needs of the curriculum. Learning outcomes of the program.

One of the goals of integration testing is to be able to isolate faults when a test case causes a failure. Consider integration testing for a program written in a procedural programming language. Rate the relative fault isolation capabilities of the following integration strategies: A = Decomposition based topdown integratio B = Decomposition

You are given the LinkedList header file, which is a complete and usable header file for the linked list data structure. You are expected to write a custom function called insert_descending which will insert the objects to the Linked List in a descending order (azalan sira). Second: You will write a C++ code including a main in which you will

CUsersHimaoDesktophwImain.exe Enter an integer5 Enter an integer34 Enter an integer 456 Enter an integer78 Enter an integer85655 Enter an integer234 Enter an integer55 Enter an integer48 Enter an integer6 Enter an integer77445 85655 234 78 55 48 34 6 5 456 77445 Process exited after 18.14 seconds with return value e Press any key to continue

Walt is CFO at Dream Networks, a global show content company based in New York. He wants to implement a new system of numbering accounts such that assets would be numbered 0005 through 1995, of which the first 400 would be for current assets, the next 600 for long-term investments, the next 300 for property, plant and equipment assets, and so on.

Find an inverse of 4 modulo 15 and solve the congruence 4 1 mod (15) also verify your answer.

Which of the following is a risk to the financial statement of a company when it places a purchase order with a supplier? The advantages of PDF files are: A. that they can be securely locked so that the figures cannot be changed. B. that they can be easily manipulated and changed by users. C. the software to produce them is very cheap. D. none of

Discuss two potential unethical uses of the company technology /data by the internal users

Consider an un-pipelined processor takes 4 clock cycles for ALU and other operations but it takes 5 clock cycles for memory operations. Assume the relative operation frequencies like ALU and other operations are 60% and memory operations are 40%. Ignore the effect of branching operations. If cycle time is 1 nanosecond and pipeline overhead is 0.2

In Exercises 12.7912.86, use either the criticalvalue approach or the Pvalue approach to perform a chisquare independence test, provided the conditions for using the test are met. BMD and Depression. In the paper Depression and Bone Mineral Density Is There a Relationship in Elderly Asian Men (Osteoporosis International, Vol. 16, pp. 610615), S.

Q4) For the beam shown in Figure below, obtain the maximum deflection using the principle of finite differences with step size hAxL4 (20) P2 P2 L3 L3 L3 ,(For the package shown in the figure below, get the maximum deflection using the principle of finite differences with step size )

I have made Quiz application. We have to enter our name and click on start, there is multiple choice questions and after that there is result of that quiz. I did not use database it is simple application. What will be (design requirements, design architecture, interface design, flowchart, function description) for Quiz application in Android

Write a report to present to the management of CardioGood Fitness to explain the functions of the CardioGood Fitness is a developer of high-quality cardiovascular exercise equipment. Its products include treadmills, fitness bikes, elliptical machines, and e-glides. CardioGood Fitness looks to increase the sales of its treadmill products and has

Give out the steps involved in using CMMI ITIL?

The BRM process is initiated either by the customer or by service management processes and functions. Say something about initiation by customers.

How many aspects is related for "Financial management for IT services".

Write a complete PL/SQL program that enables a user to interact with a database of your choice (for example you may choose employee database, or student, or a library database, etc). The database should contain one table, and the program should enable the user to: Insert a record into the table Find a record in the table Update a record in the

What is the important of Enterprise Resource Planning (ERP) in sports industry i) What new trends in ERP ii) What need to integrate the ERP with SM and CRM solution

What is the important of Enterprise Resource Planning (ERP) What is the important of Enterprise Resource Planning (ERP) in sports industry i) What new trends in ERP ii) What need to integrate the ERP with SM and CRM solution

What is the important of Enterprise Resource Planning (ERP) i) What new trends in ERP ii) What need to integrate the ERP with SM and CRM solution

In order to compare the curves, they must be normalized. The normalized RTD curve (often called E(t)) is defined as C(t) C(t) di E(t) Write a function called CompTrap that calculates the integral of a function using the Composite Trapezoidal rule. The input parameters are a vector of (evenly spaced) times over the time range 1, 12 and a vector of

Construct a 15-to-1-line multiplexer with two 8-to-1-line multiplexers. Interconnect the two multiplexers and label the inputs such that any added logic required to have selection codes 0000 through 1110 is minimized.

Jake and Lilly Gifford founded J&L Packaging, Inc. (J&LP) in 1995 after graduating from the University of Cincinnati. Jake earned a degree in robotics and mechanical engineering, while Lilly graduated with a degree in computer science. They met at the university while working on an information systems course project and married immediately

how will you handle the $886000 in the obsolete inventory

Suppose the running times of an algorithm for inputs of size 1,000, 2,000, 3,000, and 4,000 are 5 seconds, 40 seconds, 135 seconds, and 320 seconds, respectively, and respond to the following. 1) Estimate how long it will take to solve a problem of size 5,000. 2) Is the algorithm linear, linearithmic, quadratic, cubic, or exponential? 3) Give an

In VBA define a function named spaghetti, where spaghetti (x 8). Variable x must be taken as integers and the output of function spaghetti should be an integer. (15) (a) If farfalle is a function of variables a and b, and is saved in an excel workbook called book1, how do you call function farfalle in another excel workbook (15) (b) (c) we

Describe how the Internet of Things (IoT) technologies affect corporate data security interests in an environment in which much so-called white-collar work is being done from home due to COVID. Area of focus, what IoT technology is, how it is deployed, and the conditions under which such technologies can be damaging to the corporation., especially

Discuss AI in cybersecurity, How can it add to benefits achieved via such audit tools as IDEA and ACL? Also, discuss the problem it may cause to an organization. briefly relate the listed link to your discussion https://www.foxnews.com/tech/pentagon-approaches-massive-new-ai-machine-learning-breakthrough.amp

why is there a lot of imitation in the airline\'s industry and how does this affect firm performance

Bankers Algorithm For this project, you will write a multithreaded program that implements the bankers algorithm discussed in Section 7.5.3. Several customers request and release resources from the bank. The banker will grant a request only if it leaves the system in a safe state. A request that leaves the system in an unsafe state will be denied.

Cisco Systems went from a push to a pull approach to its supply chain after the dot-com debacle. How are these two approaches different? Does it depend on the state of the economy which one should be used? Why?

Assume a future where security counter measures against DoS attacks are much more widely implemented than at present. In this future network, anti-spoofing and directed broadcast filters are widely deployed. Also, the security of PCs and workstations is much greater, making the creation of botnets difficult. Do the administrators of server systems

Consider the following product line of point of sale (POS) system. Every POS system can authenticate a registered cashier, identify sales items with a barcode reader, print receipts, and supports at least one method for payment. There are several options for payment methods, which include payment in cash, payment by debit card, and payment by

19 Entrepreneurs are Select one ut of a. All answers O b. They make the decisions uestion O . Their own bosses. O d. They choose whom to do business with and what work they will do.

13 For each entrepreneur, the most important strategy is to be aware of weakness aved out of Select one O a. True question b. False

There is a strong debate among Junior High School students whether Operating System is still useful in the computing environment. As an ICT student teacher, using four (4) convincing and cogent reasons, explain why you think Operating System is pivotal in teaching and learning.

a) Explain briefly whether and to what extent the following are allowable deductions. You are to cite the relevant case laws/authority where applicable. i) Interest on a property loan to purchase a residential property by a chartered accountant. He is employed by a large firm in Sydney but often has to take work home for completion. ii)

Discuss the business added values of implementing adequate general security and controls in Accounting Information Systems.

Bob Dobalina is the only shareholder in Dobalina Manufacturing, Inc. (DMI). Bobs basis in his DMI shares is $100,000 and he estimates the value of the shares is $250,000. In addition to being the sole shareholder, Bob is also a full-time employee at DMI and pays himself an annual salary of $75,000. Following the loss of an important DMI customer,

Bangladesh Bank cyber attack 2016 You should include in your written report an interpretation and explanation of the following questions : 1-Do you believe there is a minimum level of disaster prepardness/mitigation in the bangladesh cyber attack 2016? 2-If you were in charge of disaster/crises risk management , what changes would you make?

3. Ctrl Enter command in MS Word will . A). Open a new document B). Create a new page C). Create a new Paragraph D). Create a new line 4. Header and Footer of Word are under the tab . A) Insert 5. To uniquely identify data which key is used in MS Access B) References C) Review D) Mailing B) Data Key C) Key 6. In Microsoft PowerPoint the following

Complete the entire pay cycle process by calculating gross to net pay, employer premium amounts and complete required accounting entries. Sandra works in British Columbia and is paid on a semi-monthly basis. She has a claim code of 1 on both her TD1 and TD1BC. She has the following type of earnings, benefits & deductions. She will not max out

The cash flow details of a public project is as follows Initial cost = BD 210000 Annual operating cost = BD 10000 Worth of annual benefits = BD 12,000 Worth of annual disbenefits = BD 1245 Salvage value = BD 150000 Interest rate per year = 8% and useful lie = 30 Years Using benefit-cost ratio method and find out the economical acceptability of the

You are auditor for Grapevine Australia Ltd (Grapevine), a wine production and distribution company, for the year ended 30 June 2019. Your auditors report was signed 24 August 2019. The financial report was approved on the same day by the directors of Grapevine. The financial report was issued to shareholders on 10 September 2019. The following

Consider Apple Inc. as the underlying asset, use its daily adjusted closing prices from August 12, 2019 to August 11, 2020 as historical data. 1. Estimate the daily standard deviation of the returns of this stock. 2. Deduce the yearly standard deviation. Consider the yearly standard deviation as the volatility of the stock and use the rate r

a) Buaysong runs an online business from her home. During the quarter ended 30 June 2020, she has had the following expenses:- $ Telephone & internet services (60% for business) 1,000 Penalty for late payment of tax 777 Car expenses fuel $783 and interest on loan used to buy the car $1,200 (80% for business purposes) Bank fees (35% private)

Suppose that we have a file EMP(SSN. JOB, SAL, NAME, DNO....) with the following characteristics. Blocking Factor Bfre 10 recordsdisk block Number of records re 80,000 records. Number of file blocks be 8,000 disk blocks. Record size RE 400 bytes Suppose that the EMP file has the following indexes 1. A secondary index on the nonkey attribute DNO

As given via the Internet, auto insurance quotes gathered online could vary from 470 to 1,081. A class 10 operator carries compulsory 10205 insurance. He has the following optional coverage bodily injury, 50100 property damage, 10M and collision, 200 deductible. His car is 5 year old, and the symbol of the car is 6. He has comprehensive insurance

The four components of the retailing mix, and how retailers make decisions in each of the four areas to ensure they are coordinated to portray a clear position in the market to consumers

Sloane is an insurance agent and he meets with his client, Darcy, for an annual review. Darcy purchased a G2 whole life insurance policy several years ago. When Darcy asks Sloane about the policys tax implications and how the adjusted cost basis (ACB) is calculated, which of the following answers is CORRECT A policy gain resulting from partial

Management Information system Assignment Practically all knowledge workers must know how to use information systems. Why? What changed the average citizens life more, the industrial revolution or the information revolution? How and why? Information technology might bring people together, but it also isolates them. Explain the latter claim and give

Netflixs global growth is a big factor in the companys success. By 2017 it was operating in over 190 countries, and today close to 73 million of its some 130 million subscribers are outside the U.S. In the second quarter of 2018, its international streaming revenues exceeded domestic streaming revenues for the first time. This is a remarkable

Write a program that performs the fork() and exec() system calls, which demonstrates that you understand how to properly interpret the output of the fork() system call as well as the proper place to use the exec() system call. Set up your main() function so that it accepts 1 argument from the command line (default shell). In main(), your program

Celine works in Nova Scotia and is paid on a semi-monthly basis. She has a claim of code 2 on both TD1 and TD1NS. She has the following type of earnings, benefits, and deductions. She will not max out on CPP or IE and will have full deductions. 1) Regular $4000 2) Overtime $500 3) Parking - Emploer paid taxable benefit $50 4) RPP contribution $300

Lawrence works in Alberta and is paid on a bi-weekly basis. He has a claim code of 1 on both his TD1 and TD1AB. He has the following type of earnings, benefits & deductions. He will not max out on CPP or EI this pay and will have full deductions. Regular .................................................................... ...$2000 Vacation Pay

Give a reallife example of data which could have the following probability distributions. Explain your answers. a) normal distribution b) uniform distribution c) exponential distribution d) bimodal distribution

Consider the following per-share numbers from the accounting reports of Company A 6/30/20 6/30/19 6/30/21 Estimate EPS 11.69 11.89 8.3 Book Value 28.66 19.6 21.62 per Share Dividend Per Share 2.82 1.97 Beta a). Do these numbers in 2020 and 2021 follow clean surplus relations? b). What would be the estimate of other comprehensive income in year

Can a thread be preempted by a clock interrupt? If so, under which conditions? If not, why not?

The domain and codomain of the function f (x) = x such that f (x) is "one to one" and "on to" (A) R R (B) R+ R (C) R* R* (D) None

what is database management system,its capabilities and why it is powerful

Describe the differences between productivity and its subcomponents (total measure productivity, partial measure productivity, and multifactor measure productivity) related to production and operations management success

As a healthcare manager, how are you going to convey the budgets to your supervisors or CFO?n Create an operating budget (minus staffing cost) and a capital budget for your area of responsibility. Theres no right or wrong way to prepare these budgets, but as a healthcare manager, how are you going to convey the budgets to your supervisors or CFO?

How will product manufacturers and supply chain partners benefit in their efforts to adopt high-performance supply chain measures by using RSM and AST AGV equipment and storage racks?

16) A sequential circuit with two JK flip-flops A and B, and one input X specified by the input equations described below. What are the next states of the flip-flops A and B if the present state of the flip-flops A, B, and the input X equals, 110, 111 respectively? * (3 Points) JA = B; KA = BX\' + B\'X; JB = X\'; Kp = A\' 01, 10 O 01, 11 O 11, 10

PV to TS dynamics of energy flow is absolutely defined in which process flow domain and why?

For a Brayton heat engine with a regenerator (heat exchange), calculate th and Wnet (net power output) for the case. Case: Investigate the effect of heat exchanger efficiency by varying it from 0 to 80% in steps of 20%. For this case keep Tmax as 1400 K and vary pressure ratio from 4 to 24 for each HEX value. [only do the initial case of inputs

Cost per equivalent unit The cost of direct materials transferred into the Rolling Department of Kraus Company is 2,827,500. The conversion cost for the period in the Rolling Department is 94,500. The total equivalent units for direct materials and conversion are 3,900 tons and 900 tons, respectively. This information has been collected in the

The current spot price of a stock is 32.00, the expected rate of return of the stock is 6.9, and the volatiity is 21. The riskfree rate is 4.4. Compute the price of a derivative whose payoff in 11 months is In(S) 32 Where S denotes the stock price in 11 months. Enter your solution as a dollar value, including dollar symbol (), to two decimal

7. (10 points) Solve the following SAT problem by reducing it to independent set (IS) and converting the IS solution to a SAT solution, one exists. (x Vy VzVw) (VV) (V)(

o What are the major benefits of budgeting? (Select all that apply) A. Budgeting aids managers in communicating objectives to units and coordinating actions across the organization. B. Budgeting is a way of managing only money through responsible spending. C Budgeting provides an opportunity for managers to reevaluate existing activities and

1. Comparison of three essential types of businesses in Australia: use the following criteria and organize your comparison in a table: 1) Owner/s of businesses 2) Level of difficulty in setting up the business 3) Life the business (limited or unlimited) 4) Liabilities of owners over the businesss debts 5) Legal status of business 6) Level of

What are some of the key characteristics of an unknown sample of an aqueous solution containing an ionic compound? 1. Given that the cation is from Group 1A, what is the identity of the group 1A metal ion in your solution? 2. Given that the ionic compound contains either chloride or hydroxide, how can you determine which? (Two pieces of evidence

List at least 3 out the five competitive forces. Explain how it works for your firm. 2- Explain how your firm is financed and the financial risk is related with the actual firm position. 3- Describe the profit margin, asset turnover and leverage of your firm and the relationship ANTM Anthem, Inc. Healthcare Healthcare Plans

Build a web-based application. It should be about giving marks to a picture of a man drawn by a small child. This should happen through machine learning because a model has to be developed. When the child uploads the drawn image, the application should show their growing age. This is called a good enough draw man test. I want to automate that