Operating System Questions and Answers May 17, 2021

What type of computer knowledge is needed to configure a network using Linux? What knowledge is needed to configure a network using Windows?

How is networking different in Linux than in other operating systems? How is it the same? Why are there so many tools available in Linux as compared to a typical Windows system? What do you think would help you learn the most about networking within a Linux environment?

Analyze the following digital circuit that contains two JK flip flops with initial conditions A 0 and B 1. Pay attention to whether each flipflop is rising edge or falling edge. Complete the timing diagram for signals JA, KA, JB, KB, A, and B. W Cik CIK W JA JB KB. A B KQ A K B

This process is Acondensation B boiling Cheating D non of the above 2 L20 InI50 C Cols fluid (water) 33

Oil (SG 0.8) flows upward in an inclined pipe at a rate of 10 fts. If the differential reading in the mercury (SG 13.6) is 5 ft, calculate the power that pump supplies to the oil if head loss (friction loss) is 0.2v2g. Assumptions steady state, incompressible, adiabatic 62.4 lbft. All velocities average. a a 1.2 Xxx D 12 in 1 Pump 5 ft D 6

Suppose an object falling in the atmosphere has mass m 5 kg and the drag coefficient is y 20 kgs. Recall that the differential equation governing the motion of the particle is given by mv mg Yo If the velocity of the object at time t 0s is v(0) 12.3 ms, a. find the solution of the differential equation given in () corresponding to this initial

Suppose that 6.0 mmol Ar (g) occupies 52 cm at 298 and expands isothermally to 122 cm. Calculate AG for the process.,Suppose that 6.0 mmol Ar (g) occupies 52 cm at 298 and expands isothermally to 122 cm. Calculate AG for the process.

Give descriptive details about how a system interface should be user friendly to the user ?

what are the Steps or techniques to Implement User interface management system.Explain in details

What are the functions of a user interface? Do you think the user interface design is important?Explain

End users have to deal with the abstractions provided by the user interface, what are those interfaces?Explain

The graphical user interface is important to provide interactions between a user and a system. Explain the advantages of using graphical user interface and provide appropriate examples.

List and describe with examples the design principles of Graphical User Interfaces (GUIs).

User interface design refers to the process of making software applications easy to use and effective for the user. An effective user interface starts with program design. Discuss several user interface design features and your experience with these features.

A type of user interface that comprises of windows, a pointer, and a visual screen that makes it easy for users to understand computer out and easily provide computer input is referred to as (a) Operating System (b) CLI (c) GUI (d) GLI

Drawing upon the design principles, describe the features of the user interface that will be most important to experienced users.

User interface is the platform for data to be captured into the system and output (or information) to be displayed to the users. Develop one sample of an on-line form that incorporates the appropriate design strategies that can minimize or reduce data entry errors. For each of the chosen design strategy, describe reasons or justifications.

File management is one of the most visible components of an operating system. Computers store programs and data on several types of physical media. Each medium has its own unique characteristics including access speed, capacity, and access methods, among others. Discuss mass storage physical structures including hard disks, with and without RAID,

In a computer, a File System (FS) is the way in which files are named and where they are placed logically for storage and retrieval. Discus in details the terms: File attributes, File path, File operations, File structures, Access methods and files systems

The modern file system has allowed the OS to take advantage of many useful features such as journaling, indexing, granular security, larger space, contiguous space, quotas, and compression. Pick a file system that supports at least one feature mentioned above and explain the file system, the functionality, and compare it to another file system

What is the kernel of the operating system? A. element of the operating system that allows people to access and interact with the computer system B. an interface that displays pictures (icons) and menus C. is the heart of the OS and controls its most critical processes. D. this controls the concept called paging

Given that TR R is linear vER T(v)5,5z5b, 12a, 2a5b DETERMINE the kernel of T from the given information and PROVE that the entire kernel a,bR. answer is precisely

Consider two metal alloys with the following thermal properties P 7850 kgm P2 2800 kgm Cp,1 430 JkgK Cp,2 875 JkgK k 65 WmK k 170 WmK Two geometrically identical samples of these alloys are suddenly exposed to a 200C gas and allowed to achieve thermal equilibrium. If the samples have the same initial thermal conditions, which alloy will

What is a semaphore, why is it needed? Name and describe three types of security threat. You are going to visit your friend in a part of London you have never visited before. On leaving the nearest station, you pull out your phone to find the way to your friend's house. Describe the technologies that enable you to find the right route.

A semaphore is a program variable that holds an integer value. It can be manipulated only by the operations P and V. Describe the semantics of these operations.

A semaphore puts a thread to sleep: A. if it increments the semaphore's value above 0. B. until another thread issues a notify on the semaphore. C. if it tries to decrement the semaphore's value below 0.

Define semaphore and how it helps with synchronization. Explain and elaborate on the usage of various semaphore in case of producer-consumer problem,reader-writer problem, dining philosopher problem with the appropriate algorithm, flowchart, and implementation.

A semaphore can be defined as an integer value used for signalling among processes. What is the operation that may be performed on a semaphore?Explain

What operation is not allowed on semaphores Signal a semaphore. Initialize a semaphore. Wait on semaphore. Add semaphore values.

One of the most common versions s to implement semaphores is: a. Java language b. POSIX semaphores c. CD command d. Kernel W

What is the Page Table? Explain that Can multiple page tables exist at the same time? If yes, how many?

Write a C++ program for extracting the text from a webpage. Implement 4 functions, described below. Code should follow C++ conventions, and it should not use any libraries other than those we have discussed in class so far. string readFile(string filename) This function opens the file with the given name, reads in the entirety of the file, and

What is a page table? A table that indexes memory, residing in main memory A table that indexes memory, residing on disk A table that maps L2 cache addresses to Main memory A cluttered desk

The page table is a data structure that holds a) Virtual page numbers and physical page numbers b) Virtual pages data c) The pages stored in the swap space d) None of the above

What is meant by "paging" the page table? And why do we do this? Are there other options for structuring page tables?

write a a program in c++ by using arrays not use of function. Azam is a property dealer. He wants to buy and sell property in Bahria Town. He knows the prices that the rate for the first day of the week is 1500000, 140000 for 2 nd day,130000 for 3 rd day, 120000 for 4 th day, 110000 for 5 th day, 100000 for 6 th day and 90000 for 7 th day. Help

What does each part of a page table entry represent? Explain in details.

Tables have been used in the past to control layout of a Web page. Discuss why you think this was a good or bad idea for our current Web development practices. Give an example of when a table is the proper tool to use on a page. How can CSS help to make a table more readable? Are there times when you should never have a table as part of a

What is the BIOS on the OS?Briefly explain the purpose and main functions of BIOS?

Basic Input and Output System (BIOS) are instructions that reside in _________. A.Cache B.CPU C.RAM D.ROM

What does BIOS provide for the computer ? BIOS provides memory space for applications to load into from the hard drive. BIOS provides the physical interface for various devices such as USB and O FireWire ports. BIOS provides the programming that enables the CPU to communicate with other BIOS provides memory space for applications to load into from

Which of the following resources can be used by an operating System (OS) to communicate with hardware? a. Device manager b. Secure Sell(SSH) c. Disk drives d. System BIOS e. Command Line interface(CLI)

The basic input/output system (BIOS) is stored on a chip. RAM ROM CPU CMOS

BIOS (basic input/output system) is the program a computer's microprocessor uses to start the computer system after it is powered on. It also manages data flow between the computer's operating system (OS) and attached devices, such as the hard disk, video adapter, keyboard, mouse and printer. Explain the importance of BIOS.Describe the basic

The basic input/output system (BIOS)is a chip every computer has. When you rst turn your computer on, before your operating system loads, your computer uses the BIOS to take care of e.g., keyboard input, output to the screen, and reading les from your hard drive. If your BIOS chip fails, your computer cannot boot up. The lifetime X (in hours) of a

BIOS, Basic Input Output System does manage the hardware in a computer. IF that is the case, why do we need an Operating System?Explain

Discuss the steps needed for updating and configuring Basic Input/Output System (BIOS). Identify the challenges you can run into during the configuring. What security issues may occur? Identify the most commonly change BIOS settings.

Tom, a fellow student in your hardware class is having a difficult time understanding the role that the system BIOS plays in booting the computer. How will you explain this process to him? Give him a step-by-step process that the BIOS goes through from the time you turn on the computer until it relinquishes control to the operating system.

The CPU and the input/output bus are linked through the: a. Connector b. BIOS c. Chipset d. Port

When the computer is first booted, one of the first things you see written on the monitor is the name of the BIOS used in the computer. What is a BIOS? Explain the four initial responsibilities of the BIOS during system start up

Consider the firing rule: if an outcome does not fit in either pattern, it fires if it has more in common with the first set, and does not fire if it has more in common with the second set. If there is a tie, the neuron may fire, or it may not. A neuron takes three inputs (X1,X2, and X3). The neuron is trained to output 1 if the inputs are 111 or

With firing rule X1 X2 X3 Out

BIOS is firmware used to perform hardware initialization during the booting process, and to provide runtime services for operating systems and programs. The BIOS firmware comes pre-installed on a personal computer's system board, and it is the first software to run when powered on. 1. Explore the BIOS and discuss the different menus with a

Make a table of solutions for the equation y 2x. Then, choose the correct graph for the equation. Values of a and y satisfying the equation y 2x x Y,Make a table of solutions for the equation y 2x. Then, choose the correct graph for the equation. Values of a and y satisfying the equation y 2x x Y

What system is replacing the traditional BIOS system, and what is the main difference between the two in the linux operating system?

Compare the goals of batch schedulers and interactive schedulers in terms of fairness, utilization, response time and turnaround time.

For task periods that are Harmonics, is the static priority scheduler as good as the earliest deadline scheduler for this type of task sets? Give an example for or against the above statement

Write a command-line program (no GUI) that performs the following algorithms on a set of tasks: Algorithms 1. FIFO - tasks are executed to completion in the order they are added. 2. Shortest - the shortest task is executed to completion, then the next shortest task, etc. 3. Round Robin - each task is executed for one unit of time in a rotation.

Write c++ program that implements the described task scheduler. Your program should provide a user-friendly menu, interactively handle task addition, execution, removal, status checking, and program exit. Ensure that the program provides clear feedback to the user after each operation and handles

Create a simple task scheduling application that allows a user to enter his / her to do tasks in C# with the following features. 1) Allow User to create a new to do task 2) View all existing tasks 3) Modify an existing task detail 4) Delete a specific task 5) Delete all task

Suppose, you need to design a scheduler that to schedule a set of tasks. A number of the tasks need to wait for some other tasks to complete prior to running themselves. What algorithm could you use to design the schedule and how would you implement it?

In a simple priority-driven preemptive scheduler, two periodic tasks T1 and T2 and a background task are scheduled. The periodic task T1 has the highest priority and executes once every 20 milliseconds and requires 15 milliseconds of execution time each time. T2 requires 10 milliseconds of processing every 30 milliseconds. T3 is a background task

What is a driver? a. A file that allows a peripheral or component to talk to the hardware layer of the hosting device b. A program that allows you to update your operating system c. A device used to locate other devices on a network d. A type of malware that can be introduced by downloading drivers from unauthorized sources

A device driver is a______ that controls the keyboard and interprets keystrokes. a. chip on the motherboard b. expansion card c. software program d. chip in the keyboard

Identify device drivers in a computer that are not any of the following: Graphics card device drivers Network device drivers USB Human Interface Device drivers Explain, for each of these drivers: What device it controls What that device does What services the device driver provides to the operating system How the operating system uses the device

Explain Briefly on how Device Driver and Device Controller are Different.

What devices do not need device drivers to be manually installed, and start to function as soon as they are connected to a computer?Explain in details .

What does device driver software do O a. It holds documents that are waiting to be printed b. All of the above c. It is used to install new software applications on to your computer O d. It handles requests and data transfers between the computer and a device

What is the role of device drivers in an operating system? A. To adapt different kinds of hardware to a standard interface provided by the operating system B. To provide a standard interface for implementing a file system C. To adapt different sized storage devices to the standard I/O system D. To provide a way for third-party developers to write

Describe the purpose of a device driver and Explain that how it allows user applications to interact with the device driver ?

What is the process for locating and downloading device drivers for major operating systems?Explain

Enumerate the types of devices drivers and describe their major characteristics

Bootstrap algorithm is based on the idea that rather than repeatedly obtaining independent data sets from the population, we obtain distinct data sets by repeatedly sampling observations from the original data set. What else is true about bootstrap Bootstrap cannot be used to test statistical hypotheses Bootstrap can be used to estimate confidence

What is Bootstrap Method Select one O O a. A variation on VaR b. A variation on ES c. A variation on the data d. A variation on the basic historical simulation approach

Discuss the pros and cons of bootstrapping and how important it is for entrepreneurs and their business venture pursuits. Provide practical or real-time examples for this conclusive assessments.

Identify the four rules of bootstrapping and provide at least 3 examples of those rules can be followed or maintained.

Describe how bootstrap is implemented, provide some of its applications by detailing how it is implemented in each application, and when bootstrap will not work well.

Bootstrapping involves all of the following actions except Select one O a. borrowing materials. O b. using other peoples resources. O c. acquiring resources such as people and equipment. O d. doing more with less. O e. purchasing as many resources as possible.

In what circumstances would use a bootstrap approach? Describe the steps involved in calculating a bootstrap sample?

Explain the process of Context Switching according to the following diagram

process Po executing executing idle operating system interrupt or system call save state into PCB reload state from PCB, interrupt or system call save state into PCB, reload state from PCB, process P idle executing idle,process Po executing executing idle operating system interrupt or system call save state into PCB reload state from PCB,

What is context switch? Explain that what is the advantage and disadvantage of too much context switch?

Create a C program that helps users track their daily or monthly expenses. The program should allow users to input their expenses, categorize them, calculate totals, and generate reports. Key Features: 1. Implement a system for users to input their daily expenses.

A context switch is an essential operation provided by operating systems. Why do we need context switch? and what are the steps taken during such operation?

Explain the term "context switching" with reference to: a) Multiprogramming with a uniprocessor b) Multithreading at kernel level c) Multithreading at user level

D Which of following operations is involved in contextswitch Save the state information of the first process. B Reload the state information of the second process. E Two different processes. All above. Nothing of that

Describe context-switching in a common, real-life example, and identify the "process" information that needs to be saved, changed, or updated when context-switching takes place.

What can you say about Context switching? a. Running multiple threads b. Saving/Restoring all information during a thread switch c. Calling a system function d. Changing pages in memory e. Replacing frame numbers in a page table

What happens on a context switch? Should context switches happen frequently or infrequently? Explain

There is a delay or wasted time during the context switching Explain why there is such a delay and is there any way to avoid from it?

Explain the general steps that happen during system calls and a context switch. what are the pros and cons of context switch? Why should the number of context switches be minimized or maximized?

Briefly describe the improvements made to context switching over the years. How has the amount of time processors spend on context switches improved? How has hardware helped to make context switching faster?

Batch processing is easy to reproduce and reprocess because of O None of the option provided O high latency O bounded datasets O small data volumes

Batch processing involves the processing of bulk material in groups through each step of the process. Processing of subsequent batches must wait until the current is finished. Briefly describe another processing technique in industry with a product example and a diagram to support the process.

Provide examples of programs that would involve processing files. Classify these programs as employing either batch or interactive processing.

Write a program to simulate the processing of batch jobs by a computer system. The scheduling of jobs should be handled via a queue (or priority queue for more of a challenge). Examples of commands that your program should be able to process are . add - to add an entry to the queue delete - to take an item out of the queue status - to report on

This question looks at the difference between batch, micro batch and pure streaming processing. (i) Provide a short definition of each of these three processing models describing what type of input they require and how often output will be returned. (ii) Suppose you begin a job within a team at a financial institution tasked with creating a

Industrial control system are classified into two large system, motion control and process control. In industry, batch processing is widely used in process control. Define batch processing and give two examples of batch processing and explain the procedure of each process.

Write a paper on THE IMPACT OF ARTIFICIAL INTELLIGENCE ON CUSTOMER EXPERIENCE IN THE RETAIL INDUSTRY

Under what circumstances will paging be used by the Memory Manager, explain briefly how paging is accomplished .

In computer systems engineering, paging means divide (a piece of software or data) into sections, keeping the most frequently accessed in main memory and storing the rest in virtual memory. Based on your understanding, explain the diagram (Figure 2) below 1234567 HR22 8 9 10 11 BACCIDE Ecoa 12 m 13 14 0 15 logical memory 05 16 21 32 page table

Paging to disk still necessary on systems with a large amount of RAM. As it does not matter how much RAM the system has, but it will be able to use if efficiently only if uses paging. what is it referring to when you say "paging"?Explain