Question Discussion & Solution

The correct answer is the Date picker.

Key Points

• A Date picker is a mini-calendar from which data - entry clerks can enter a date.
• ​The date picker allows users to enter a date either through text input or by choosing a date from the calendar.
• The date picker is made up of several components, directives, and the date implementation module that work together.
• A data entry clerk is a member of staff employed to enter or update data into a computer system. Data is often entered into a computer from paper documents using a keyboard.

​Additional Information

The correct answer is Kernel.

Key Points

• The first program loaded on start-up and manages computer system resources is Kernel.
• A kernel is the central part of an operating system.
• It manages the operations of the computer and the hardware, most notably memory and CPU time.
• There are five types of kernels:
  • A microkernel, which only contains basic functionality
  • A monolithic kernel, which contains many device drivers
  • Hybrid Kernel
  • Exokernel
  • Microkernel

Additional Information

• Resources under the Operating System control:
  • The processor.
  • Main memory.
  • Input/Output Device.
  • Secondary storage devices.
  • Communication devices and ports. 

The correct answer is Monitor.

Key Points

• A computer monitor is an output device that displays information in pictorial form.

Additional Information

• Plotter - A plotter is a printer that interprets commands from a computer to make line drawings on paper with one or more automated pens.
• Scanner - A scanner is an input device.
• Printer - It is an output device.

A number system includes the number of independent digits used in the number system (the base), the place values of the different digits constituting the number, and the maximum numbers that can be written with the given number of digits.

The Binary Number System: 

• The binary number system with only two independent digits, 0 and 1, is a base-2 number system.
• All larger binary numbers are represented in terms of ‘0’ and ‘1’.

Decimal to Binary Conversion:

Step 1: Divide 22 by 2 to get the Quotient. Keep the Whole part for the next step and set the Remainder aside.

25 / 2 = 12 with 1 remainder

Step 2: Divide the Whole part of the Quotient from Step 1 by 2. Again, keep the Whole part and set the Remainder aside.

12 / 2 = 6 with 0 remainder

Step 3: Repeat Step 2 above until the Whole part is 0.

6 / 2 = 3 with 0 remainder

3 / 2 = 1 with 1 remainder

1 / 2 = 0 with 1 remainder

Step 4: Write down the Remainders in reverse order to get the answer to 25 as a binary.

When we put the remainders together in reverse order, we get the answer 11001

Hence, the binary equivalent of decimal number 25 is 11001

The correct answer is an operating system.

• Linux is an operating system.

Key Points

• Linux was created in 1991 by  Linus Torvalds and the Free Software Foundation (FSF).
  • It is an open-source Unix-like operating system.
  • An operating system help users interact with the computer.

Additional Information

• Machine language and Assembly language are an example of a low-level language.
  • Machine language is a low-level language that is comprised of binary digits i.e. ones and zeros. 
  • An assembly language is a language designed for a specific type of processor.