Answer:
MULTITASKING OS
Explanation:
MULTITASKING OPERATING SYSTEM is an operating system that enables and allow user of either a smartphone or computer to make use of more that one applications program at a time.
Example with MULTITASKING OPERATING SYSTEM smartphones user can easily browse the internet with two applications program like chrome and Firefox at a time or simultaneously
Therefore a user working with two apps simultaneously is an example of a unit that uses a MULTITASKING OS.
Answer:
(9F7, 9F8, 9F9, 9FA, 9FB, 9FC, 9FD, 9FE, 9FF, A00, A01, A02, A03)
Explanation:


This means that we must find all hexadecimal values from 2551 to 2563, or 9F7 to A03. You can convert from decimal to hexadecimal for each one, or just count.
Answer:
The Variable is out of scope
Explanation:
In programming variables exists with scopes This could be local or global. When a variable is declared as a global variable it is available to all methods and procedures in the program. Java programming language as well as C++ and several others use the open and close braces to define the scope in programs. consider the following example
<em>public class ANot {</em>
<em> public static void main(String[] args) {</em>
<em> int i = 0;</em>
<em> while ( i<10){</em>
<em> int sum = 0;</em>
<em> sum = sum+i; </em>
<em> }</em>
<em> }</em>
<em>}</em>
In this example, the variable i is global and can be assessed within the while loop but the variable sum is local to the while loop and cannot be assessed outside of it