Operating System Questions and Answers April 03, 2020

Metropolitan Car Service Bureau needs a system that keeps car service records. The companys analyst has provided information about the problem domain in the form of notes. Your job is to use those notes to draw the domain model class diagram. The analysts notes are as follows: The Owner class has the attributes name and address. The Vehicle

You were hired as an analyst to develop a new information system to automate the payroll transactions in a mid-size organization. The proposed system will contain employees data and interface with the organizations General Ledger system (GL). The new system will include information such as Employee ID, Employee Name (broken down into last name,

Describe a mechanism by which an operating system can enforce limitedtransfer of capabilities. That is, process A might transfer a capability to process B, but A wants to prevent B from transferring the capability to any other processes. Your design should include a description of the activities to be performed by A and B, as well as the

1. Why values determine how society influences technology and how technology influences society using the example of autonomous vehicles. Who decides what problems are addressed and solved? Who decides how those problems are solved? How do values influence the final outcomes? Explain. 2. What are the ways in which society affects or impacts how

In addition to vision system using visual light, scientist has invented new systems with capabilities beyond human visions. Discuss five latest technologies that able to map the unseen world and their applications. Illustrate with diagrams if possible.

After reading the two attachments: Financial System Meltdown: Mitigating Strategies Lessons Learnt Future Policy Guidelines,Presentation by: Kwamina G. Acquah, Dominic Owusu, Sharon G. Dzirasah, Benjamin Kwablah, Samuel Afriyie and George A. Bentum. AND Liquidity Risk Management: An area of Increased focus for insurers by Claire Both, FIA, CERA,

ENTERPRISE RISK MANAGEMENT . FINANCIAL SYSTEM MELTDOWN Mitigating Strategies Lessons Learnt Future Policy Guidelines BRIEF BACKGROUND Presentation by Kwamina G. Acquah Dominic Owusu Nature of Banks (UBBL in 2003) prior to the unprecedented crises Sharon G. Dzirasah Benjamin Kwablah Samuel Afriyie George A. Bentum Number of Banks prior to

A farmer has 3 farms to grow 3 crops. The farms are 500, 800, and 700 acres, and the water allocation for each farm is 600, 800, and 375 acre-feet, respectively. The crops suited for this region include sugar beets, cotton and corn. These crops differ primarily in their expected net return per acre and their consumption of water. The USDA has

A local city council is considering a major transit expansion. The project requires purchases of $40 million in equipment now and annual expenses of $1 million each year starting in 2 years. The transit expansion is expected to reduce road congestion beginning next year and reduce respiratory illness in the region by 5% in 3 years. These benefits

What is the effect of the acquisition of merck to the revenues of p&g (procter&gamble) during year of acquisition up to date? How did COVID 19 affect the revenues of the health care segment of Procter&Gamble (P&G)?

How can grocery receipts be generated from a database system?

3) The following is alleged to be a solution to the critical section problem. Justify for its correctness or show a case in which it fails. (10 Marks) var turn1.2 boolean flag()0..1 begin flag0) 1 flag1) 1 turn 1 cobegin repeat flag00 while flag1 0 do if turn 2 then begin flag0 1 while turn 2 do(nothing) flag0 0 end (CRITICAL SECTION turn2

Once you have attended the event, answer the following questions using Microsoft Word in a report format ensuring you use the style guide provided. 1. Describe the webinar event or situation. Include the topic and the company that organised the event. 2. When was it held? 3. Describe what the presenter talked about in 50 words or more and list 2

You are required to attend one (1) online professionally organised networking event related to your professional field. This event may be hosted through CPA, CA, EA or ACS. Refer to Useful Networking Information below Once you have attended this event, answer the following questions using Microsoft Word in a report format ensuring you use the

Why do organizations use a Style Guide? What formatting techniques can be used to enhance the readability of your completed document? Provide detail on the process you would follow when designing and planning a new business document . Be sure to consider what information you would gather to clarify the purpose and inclusions of the document.

Japan has long maintained its position as the worlds top exporter of robots, selling nearly 50 percent of the global market share in terms of both units and dollar value. At first, Japans robots were found mainly in factories making automobiles and electronic equipment, performing simple jobs such as assembling parts. Now Japan is poised to take

some companies in certain industries, like the eCourier above, owe and rely on technology while others in the same business don't? Enter into small groups with your same friends to major in what majors they can decide to innovate the use of information technology.

Gunakan Internet untuk meneliti penawaran terbaru dalam teknologi kecerdasan bisnis dan penggunaannya oleh perusahaan. Perbedaan apa yang dapat Anda temukan dengan yang ditinjau dalam kasus ini? Siapkan laporan untuk meringkas temuan Anda dan soroti penggunaan teknologi baru dan inovatif ini.

Consider the following example and perform complete working of paging, generate the logical and physical addresses too. Let us consider the main memory size 16 Kb and Frame size is 2 KB therefore the main memory will be divided into a collection of 8 frames of 2 KB each. There are 3 processes in the system that is P1, P2 and P3 of 4 KB each. Each

a. Describe the data b. describe the pattern/trend c. describe a conclusion d. explain the connection between the two data tables

Large majority of Americans get news on digital devices of US adults who get news A smartphone, computer or tablet Television Radio 16 from... Often Sometimes 40 60 34 32 28 50 Print publications 10 22 Source Survey of US aduts conducted Aug 31Sept.7,2020. PEW RESEARCH CENTER 26 68 NET 86 Newspaper circulation continues to fall Total circulation

Briefly describe a scenario in which you might use observations or a participative method to assess the effectiveness of your advertising or publicity efforts are having. Why do you feel observations would be effective in the scenario you described?

a) Should Shawn emphasize building social equity or preserving economic equity in implementing a solution to the Overseer brand dilemma? b) Actionable Recommendations: Build a set of actionable strategies to correct the problem you have identified, which must be well-reasoned, argued, and supported with significant evidence. Case study - when your

1. Cite one (1) scenario that merits the need to automate information retrieval processes in Ghana. [3 Mark] 2. Explain any one of the dangers associated with an automated information retrieval system. [5 Marks] 3. State any one reason why standards and protocols are critical in automating an information retrieval system. [5 Marks] 4. Account for

Suppose that we have the following page table for a process currently running and assume that the page size is 1024 bytes. Everything is numbered starting from zero and all addresses are memory byte addresses. The system uses 24 bits for addressing. The Main Memory has 1Mb of RAM. Page number Valid 0 1 MU1 1 2 0 3 4 WWWL 5 FEET 1 0 1 Modified 0 1

StoneEdge has a verbal agreement with LM that is based on LMs unsigned quote to StoneEdge on March 31, 2020, for one TV commercial, one app, and social media pages. For a customer of StoneEdges size, if offered separately, LM charges $1.2M to create a TV commercial, charges $650K as a one-time cost to build an App, and $150K as a one-time cost to

You have been invited, as a consultant, to help establish a new Library/Archive/ Information Center. Mention TEN preservation principles you would recommend they follow to prevent or cure insect infestations.

1. Write a python program to a. Extract the contents (excluding any tags) from two websites (https://en.wikipedia.org/wiki/Web_mining&https://en.wikipedia.org/wiki/Data_ mining). b. Remove stopwords [using Spacy Module] (including the special characters/symbols) from the contents retrieved from those two URLs and save the contents in two separate

The Society of American Archivists (SAA) defines preservation as the totality of processes and operations involved in the stabilization and protection of documents against damage or deterioration and the treatment of damaged or deteriorated documents. The International Federation of Library Associations and Institutions (IFLA) defines preservation

The interrupt service routing is a system program. Select one O True O False ,The OS offers protection even for the CPU Select one O True O False ,O writes copies data from memory to the IO buffer. Select one O True O False

Suppose that the following processes anrive for execution at the times indicated. Use Shortest Remaining Time First SRTF (preemptive SJF) scheduling to answer the following, Find the average wait time. Process Arival Time Burst Time P1 15 P2 3 P3 4 4 P5 15 3 . 64 O b.6 O C 6.6 O d. 7.2

Suppose that the following processes arrive for execution at time zero. Use Round Robin scheduling algorithm if the Quantum time (time slice 2). What is the waiting time for P1 Process Burst Time P1 P2 5 P3 12 4 6. P5 7 O a. 21 ms O b. 18 ms O c. 25 ms O d. 26 ms O e. 27 ms

Assume you have the following jobs to execute with one processor Note 1 highest 5 lowest Process Arival CPU Burst Priority Time time 35 4 B 25 15 15 30 15 E 40 15 1 Using a preemptive priority scheduling with no cost context switching, what is the tumaround time for process A. a. 120 O b. 55 O c. 70 O d. 105

Given the following processes in ready state and corresponding CPU burst times required, what is the average tumaround time for FCFS scheduling. (Assume that they arrived in the order A, B, C, D and then E) Process CPU Burst Time A 5 12 C 7 D 8 E 2 O a. none of these O b. 6.8 O c. 14.4 O d. 34 O e. 22.4

Which one of the following is not a component ofthe OS O a. File System b. User Interface System programs d. Compilers ,Fora fixed number of processes, SJF scheduling algorithm O a. Only Maximizes CPU throughput and Minimize average response time. O b. Minimize average waiting time. O. Only Minimize average waiting time and Minimize average

For a fixed number of processes, SJF scheduling algorithm O a. Minimize average waiting time. O b. Only Minimize average waiting time and Minimize average turnaround time O. Only Maximizes CPU throughput and Minimize average response time. O d. Minimize average turnaround time. O e. Maximizes CPU throughput ,Question 21 Context switching can

What is the effect of increasing the time quantum to an arbitrarily large number for RR scheduling O a. SJF scheduling O b. None of these answers. O c. SRTF scheduling O d. FCFS scheduling ,Question 13 Not yet Which one of the following statements is correct answered Marked out of O . 1.00 When an interrupt occurs a process is stopped and

Which is a better arrangement for a high priority queue scheduling a. Queue priority 1 and time slice 10 Ob. Queue priority 2 and time slice 10 O Queue priority 1 and time slice 3 d. Queue priority 2 and time slice 3 ,Question 16 Not yet The long term scheduler is important because answered Marked out of O a. It controls the degree of

The long term scheduler must O a. Control the degree of multiprogramming. O b. Dispatch jobs. O c. None of these O d. Suspend jobs using too many resources. ,Question 18 If a scheduling algorithm always gives the printer to the process with the smallest print job, what can happen Not yet answered Marked out of O a. mutual exclusion 1.00 P Flag

Which one of the following statements about system security is correct O a. A computer system these days is more secure than when it was run by an operator. b. A computer running a multiuser OS is more secure than one running a single user OS. OC A computer system these days does not need an OS. A computer that is connected to the internet is less

Thread pools are important due to which one of the following statements O a. Thread pools limit the number of threads and allow very fast connection to the clients b. Thread pools limit the number of threads makes the server start faster O C. Thread pools limit the number of threads which allows full system utilization O d. Thread pools limit the

What events occur to cause a process to change states O a. the scheduler chooses another process to be run O b. the scheduler chooses this ready process to run O . process changes from blocked to ready state upon completion of its IO O d. a process gets blocked waiting for input O e. Any of these. ,Java language is called platform independent.

Context switching can become a burden with increasing the frequency of the short term scheduler. Which one of the following can increase the speed of context switching in a computer system O a. Increase the bus width of the CPU O B. Increase the number of concurrent processes O C Implement hardware support to copy registers in one instruction Od.

The purpose of scheduling is to O a. Maximize CPU utilization and Minimize throughput O b. Minimize CPU utilization and Maximize throughput O c. Maximize CPU utilization and Minimize turn around time d. Minimize wait time and Maximize response time

For Memory protection the OS uses two registers to control the process address space. Which one of the following is correct O a. The base register and the limit register are both address values O b. The limit register holds the value of the process size O C. The base register and the limit register are both sizes d. The base register holds the

Question 3 Bootstrap program is loaded from disk to RAM. Not yet answered Marked out of Select one 1.00 O True P Flag question O False ,How many instructions can a processor execute at a time O a. Two O b. Depends on the operating system O. One O d. Equal to the number of concurrent processes in memory O e. Equal to the number of processes in the

If a scheduling algorithm always gives the printer to the process with the smallest print job, what can happen a. mutual exclusion O b. printer lockup O c. starvation O d. circular wait

The producer consumer problem can be solved with process cooperation. Which one of the following statements is correct O a. When the buffer is empty the producer must wait O b. When inout the consumer must wait O c When the producer is running the consumer must wait O d. When the buffer is full the consumer must wait

Assume you have the following jobs to execute with one processor: Note: 1: highest; 5: lowestn a . 25 O b. 26.7 O c. 24 O d. 25.5n

Assume you have the following jobs to execute with one processor Note 1 highest 5 lowest Process Amival Time 0. CPU Burst Priority time 35 4. 2 15 30 25 15 15 3. D E 40 15 Using a preemptive priority scheduling with no cost context switching, what is the average waiting time for process . 25 O b. 26.7 O c. 24 O d. 25.5

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Single Linux based web server available on the public Internet with and IP address of 90.33.30.10 and a DNS name of web1.widgets.com Customer contact: Stuart Melvin email stu@widgets.com phone 123.456.7890 Customer request: Is the server vulnerable to any known attacks including the customer database available on the server? If so how are they

1.How the product characteristics or shipping profile influence the revenue model? 2.How national and international factors influence our E-commerce? 3.What is the key technology behind the internet? 4.What are the advanced features for a web catalog over mail-order system? 5. Economics of digital products is quite different from the economics of

opic What are the major challenges in managing information systems Explain the connection between the Firm, its IT Infrastructure and Business bilities. Discuss Cloud Computing in terms of fueling open innovation.

What are the major challenges in managing information systems Explain the connection between the Firm, its IT Infrastructure and Business abilities. Discuss Cloud Computing in terms of fueling open innovation.

Why software engineer is important to a company

CREATE AN ERD, you can hand draw it if you want, THANKS IN ADVANCED! Using the following narrative about a car tracking system by PG Inc., design and document a logical data model using Erwin (or draw.io) . You should also make and document any reasonable assumptions where you feel the case is vague or ambiguous or missing any data necessary to

An alternative definition for a distributed system is that of a collection of independent computers providing the view of being a single system, that is, it is completely hidden from users that there even multiple computers. Give an example where this view would come in very handy?

With neat diagram explain about the architectural model. What is the purpose of the fundamental model? What would be an example? And explain briefly with valid arguments.

Q: a). We argued that distribution transparency may not be in place for pervasive systems. This statement is not true for all types of transparencies. Why? Give an example. b). How RMI and RPC can be implemented? Give valid reasons.

Cloud computing services like Amazon's Elastic Compute Cloud (EC2) assign users virtual machines (VMs) instead of allocating physical machines directly. Going so provides at least three major benefits to Amazon. Explain what these three benefits are, giving a brief motivation for each one.

Q: a). Implementation of COBRA's asynchronous method invocation does not affect the server-side implementaion of the object. Explain why this is the case? b). It is possible to have system-specific implementations of COBRA object references while still being able to exchange reference with other COBRA-based systems?

Why business owners should be aware of ICT?

Andrew deals with several vendors and one of them is Navi Wholesale. Andrew often places orders for chocolate of different flavors at the same time. Each order is placed with one specific vendor. The vendors never consolidate multiple orders into one shipment, and always ship merchandise promptly. Usually, Andrews vendors can fill his entire order

Company X is vulnerable to outsiders who are accessing their system more frequently. Propose an authentication mechanism to control access to their system. Use up to two authentication factors, and explain company X is vulnerable to outsiders who are accessing their system more frequently. Propose an authentication mechanism to control access to

a) Consider the following: Plaintext: KEY Secret key: CRYPTOGRAPHY Compute the ciphertext from given plain text and key using the hill cipher method. b) Explain the model for network security.

a) Explain various types of attacks on a computer system. b) What is a security mechanism? List and explain various security mechanisms.

Write short note on any two of the followings i) Elliptic curve cryptography ii) RSA algorithm iii) Access Control management

Q4. a) What is a Firewall? Explain its design principles and types with example. b) List the characteristics of a good firewall implementation? How is circuit gateway different from application gateway?

a) What is Intrusion? Discuss Intrusion detection system with neat diagram. b) Discuss the need for a Secure Socket Layer.

a) What is password management? b) List three approaches to message authentication?

Explain the entrepreneurial characteristics of Tariq. How did they evolve over a period of time?

Tariq a Mechanical Engineer graduated from University of Engineering and Technology. After which he worked in different Construction companies such as National Construction Company, Millat Tractors and PEL. From where he got sufficient experience in the field. That let him to establish his own construction company Koldkraft Pakistan that had been

1. Comment on the MIS in Dell and suggest the positives and negatives of MIS in Dell?

2. The dell directly sells its computers to the customer: justify whether it will give them good and reliable information, or they are lacking in information system due to this move?

3. Develop the information flow diagram for dell and suggest some improvement in the same.

MIS is a combination of Management, Information, and systems. Which of the three parts of the management information system does Dell lack?

Discuss why cybercrime investigation and prosecution in Kenya will continue to be a hard, multifaceted problem in the foreseeable future. Discuss how Quantum Computing will impact the security of cryptographic algorithms

The goal of this section of the assignment is to test your knowledge about programming or code writing that you have acquired thus far in this course. Problem Specification The university has recruited you help them in calculating the fortnightly pay of their campus staffs. This calculation of pay will be used by the payroll team to determine the

Identify three elements of the prototyping process that must be controlled to ensure prompt delivery of the prototype.

Suppose that you are a computer virus writer; hence, you know that you need to store a copy of the code for your virus inside the virus itself. Moreover, suppose you know that a security administrator is also aware of this fact and will be using it to detect the presence of your virus in operating systems files. Explain how you can hide the