Question Discussion & Solution

There are different components in the computer system. they all have their own working mechanisms. some component takes input, some process the data and some give output. all these components combine and make our work easier, comfortable, and convenient.

For instance, a keyboard or computer mouse is an input device for a computer, while monitors and printers are output devices. Devices for communication between computers, such as modems and network cards, typically perform both input and output operations.

Hence, we may conclude that the right answer be like: -

The correct answer is Arithmetic and Logic Unity.

Key Points

• In computing, an arithmetic logic unit (ALU) is a combinational digital circuit that performs arithmetic and bitwise operations on integer binary numbers.
• This is in contrast to a floating-point unit (FPU), which operates on floating-point numbers.
• It is a fundamental building block of many types of computing circuits, including the central processing unit (CPU) of computers, FPUs, and graphics processing units (GPUs).

Additional Information

• Bitwise logical operations used in Arithmetic and Logic Unit:
  • AND - It is true when both the components are true.
  • OR - It gives true when any of the one components is true.
  • Exclusive OR - It is true if and only if its arguments differ (one is true, the other is false). 

The correct answer is the Boot sector.

Important Points

• The portion of a disk that contains the master boot record is the Boot sector.
• The MBR contains a partition table, which stores information on which primary partitions have been created on the hard disk so that it can then use this information to start the machine.
• The MBR is stored on the first sector of the hard disk and is created along with the first partition on the drive.
• It is loaded into memory as one of the first actions during system start-up.

Key Points

• The MBR is comprised of a small section of operating system independent code, a disk signature, the partition table, and an MBR signature.
• The disk signature is a unique four-byte identifier for the hard drive.
• It is used for purposes such as identifying the boot volume and associating partitions and volumes with a specific drive.
• The partition table informs of the start position and length of each partition on the hard disk.

Additional Information

The correct answer is Ctrl + Shift + <

Key Points

• Ctrl + Shift + < 
  • It is used to decrease the font to the next smaller point size available in the Font size list box in Microsoft Word.

Additional Information

• Ctrl + Shift + >
  • It is used to increase the font to the next smaller point size available in the Font size list box in Microsoft Word.
• Ctrl + Shift + +
  • It is used to apply superscript.
• Ctrl + Shift + F
  • It is used to open the Font window to change the font.

Important Points

• You can access the Fonts dialog box or use the tools in the Home tab in MS Word.
• The list contains font size in points 8, 9, 10, 11, 12, 14, 16, 18, 20, 22, 24, 26, 28, 36, 48 and 72.
• Word supports font size b​etween 1 and 1638. 

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