plz....answer fast in your own words
Answers
A)The OS decides the best way to swap between running, runnable and waiting processes. It controls which process is being executed by the CPU at any point in time, and shares access to the CPU between processes. The job of working out when to swap processes is known as scheduling.
B)In operating systems, memory management is the function responsible for managing the computer's primary memory.
This is distinct from application memory management, which is how a process manages the memory assigned to it by the operating system.
Single allocation is the simplest memory management technique.
C)Device Management is another important function of the operating system. Device management is responsible for managing all the hardware devices of the computer system. ... An operating system manages the devices in a computer system with the help of device controllers and device drivers.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Ball</title>
</head>
<body>
<div class="ball"></div>
<style>
html,
body {
background: #ffdf6d;
padding: 0;
margin: 0;
box-sizing: border-box;
display: flex;
justify-content: center;
align-items: center;
height: 300px;
overflow: hidden;
}
.ball {
width: 200px;
height: 200px;
border-radius: 50%;
background: white;
position: relative;
box-shadow: -20px 0 rgba(0, 0, 0, 0.1) inset;
animation: roll 1s ease-in-out infinite;
background: linear-gradient(
to bottom,
#e83e35 0%,
#e83e35 50.5%,
#ffffff 50.51%,
#ffffff 100%
);
}
.ball:after {
content: "";
position: absolute;
top: calc(100px - 3px);
left: 0;
width: 200px;
height: 6px;
background: #3f3f3f;
}
.ball:before {
content: "";
position: absolute;
top: 67px;
left: 67px;
width: 54px;
height: 54px;
border: solid 6px #3f3f3f;
border-radius: 50%;
background: white;
z-index: 1;
box-shadow: 0 0 15px -2px #c62828 inset;
animation: button 3s ease infinite;
}
@-webkit-keyframes roll {
from {
transform: rotate(0);
}
90%,
to {
transform: rotate(720deg);
}
}
@-webkit-keyframes button {
from,
50%,
to {
box-shadow: 0 0 15px -2px #c62828 inset;
}
25%,
75% {
box-shadow: 0 0 10px -2px #1300ea inset;
}
}
</style>
</body>
</html