Computer Aptitude Questions for IBPS Clerk Mains - 20th January 2019

1.

A barcode is ________ code that represents data with bars of varying widths or heights.

   A.) optical
   B.) read/write
   C.) magnetic
   D.) laser

Answer: Option 'A'

optical

2.

Which of the following units performs the arithmetic tasks (such as addition, subtraction, multiplication and division) and logical operations?  

   A.) Input unit
   B.) Control unit
   C.) Arithmetic Logic Unit (ALU)
   D.) Storage unit

Answer: Option 'C'

Arithmetic Logic Unit (ALU) performs arithmetic and logical operations. On the other hand, control unit extracts instructions from the computer memory, decodes and executes instructions, and takes help of the ALU if required. Storage unit or memory unit is used to store the data, while the input is used to enter data into the computer.

3.

Which of the following units is used to measure the speed of the processor?  

   A.) Kilobytes (KB)
   B.) Gigabytes (GB)
   C.) Gigahertz (GHz)
   D.) Kilobits (Kb)

Answer: Option 'C'

A processor speed is measured in Gigahertz (GHz). 

4.

Which among the following is a technology commonly used in mobile devices to recreate the sense of touch by applying forces, vibrations, or motions to the user?

   A.) Tactile Haptics
   B.) Biometrics
   C.) Virtualization
   D.) Data Mining

Answer: Option 'A'

Tactile haptic feedback is common in cellular devices. Handset manufacturers have included different types of haptic technologies in their devices; in most cases, this takes the form of vibration response to touch. Surface haptics refers to the production of variable forces on a user's finger as it interacts with a surface, such as a touchscreen.

5.

The layer that is the closest to transmission medium.

   A.) transport
   B.) network
   C.) data link
   D.) physical

Answer: Option 'D'

Physical layer is closest to transmission medium. 

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