1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
inessss [21]
3 years ago
14

What is the purpose of system calls, and how do system calls relate to the OS and to the concept of dual-mode (kernel-mode and u

ser-mode) operation?
Computers and Technology
1 answer:
barxatty [35]3 years ago
4 0

Answer:

With the use of API.

Explanation:

The computer system is an electronic device that comprises of the interaction of the hardware and software components of its system. The software component of the system controls all activities of the hardware and other application software interface.

The operating system is that software in the system that controls all system activities. It uses the kernel interface to connect directly to the hardware and create a platform for running application or user softwares.

The user software is used to run one specific task on the system. Sometimes, it seeks to kernel mode from the operating system, to use a hardware component, by the use of API or application program interface.

You might be interested in
Dennis would like to include a video in a presentation. The source of the video is on the internet, but he would like to ensure
Masteriza [31]

Answer:

For your first question, it is D. Use pictures instead because this cannot be done.  For your second answer, it is C. Presenter view.  For your final question, it is D. Text box.

If I am not correct, I am very sorry!-

Have a good day! ^^

6 0
3 years ago
Read 2 more answers
Your mom is trying to save room on her hard drive and wants to uninstall some of her applications. She asks you how to do this.
katen-ka-za [31]
<span>Explore and select Uninstall from the context menu. B. Right-click on the application execution file and select Delete from the context menu. C. Go to Task Manager and find the listed application, then right-click on it and select Uninstall. D. Go to Programs and Features and find the listed application. Then right-click on it and select Uninstall.

Hope this helped!</span>
6 0
3 years ago
Read 2 more answers
Write a definition of the function printDottedLine, which has no parameters and doesn't return anything. The function prints to
puteri [66]

Answer:

The solution code is written in Python

  1. def printDottedLine():
  2.    print(".....")

Explanation:

A function printDottedLine() is defined (Line 1). The bracket is left empty since this function is not required to take any parameters. Besides, there is no return statement inside the function as it is not expected to return anything.

Inside the function, print function is used to output a single line consisting of 5 periods as required by the question (Line 2).

6 0
3 years ago
You can use this effect to break a color into a percentage of its full strength.
Dmitriy789 [7]
The answer on this scenario would then be c. drop out. This effect can be done if one wants to break a color into one's percentage of the full strength. Hope this is the answer and would be of big help.
6 0
3 years ago
The energy used by an appliance which operates at 240 volts at 15 amp for 4 hr. is A. 0.92 kwhr. B. 3.45 kwhr. C. 14.4 kwhr. D.
Tju [1.3M]

Answer:

C. 14.4 kwhr.

Explanation:

To calculate the energy used by appliance first calculate the power. The formulae for calculating power(<em>P</em>) is P= I \times V, where V stands for voltage and I stands for current.

In the given problem,  V = 240 volts and I = 15 amp. Therefore,

P=240 \times 15 =3600\ watt(w) = 3.6\ kw

Now, formulae for calculating energy used i.e. work(W) is W = P\times t, where <em>t</em> is the time.

In the given question time is 4 hr. Therefore energy used will be,

Energy used (W) = 3.6\times4 =14.4\ kwhr.

8 0
3 years ago
Other questions:
  • how do you make a circuit so 1 switch will turn on/off all the lights(3 lights) and a second switch will change the lights from
    14·2 answers
  • It is a good idea to use more than one typeface in a document when _____.
    8·2 answers
  • The gaining of unauthorized access to data in a<br> system or computer:
    11·1 answer
  • A web client is sending a request for a webpage to a web server. from the perspective of the client, what is the correct order o
    14·1 answer
  • Which word processing file that contains text and other
    13·2 answers
  • Syntax errors ________. a. result from an attempt to perform an operation that cannot executeb. are errors such as misspelled ke
    14·1 answer
  • The building blocks of coded language are called
    11·2 answers
  • John is runnig his Database application on a single server with 24 Gigabytes of memory and 4 processors. The system is running s
    6·1 answer
  • What would happen if computers only had input devices?
    9·1 answer
  • Type the correct answer in the box. Spell all words correctly.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!