Computer MCQs for Competitive Exams

The correct answer is 8 bits because a byte is standardly defined as a single cohesive unit of memory allocation comprising eight individual bits.

• 8 bits: This is the correct choice. An 8-bit architecture allows a single byte to express simple_quiz^8$ (256) unique binary combinations, which is sufficient to encode a basic alphanumeric symbol under standard character maps.


• Incorrect Options:
  
  
  
  • 4 bits: This is incorrect. A 4-bit block is specifically termed a 'nibble' in data transmission frameworks.
  
  

The correct answer is peripheral device because peripherals are external hardware components that plug into system buses to expand processing capabilities.

• peripheral device: This is the correct choice. Peripherals connect to the motherboard through auxiliary expansion interfaces (like USB or PCIe ports). Common examples include secondary display monitors, scanning devices, layout printers, and input controllers.


• Incorrect Options:
  
  
  
  • digital device / system add-on / disk pack: These are incorrect. These terms either represent general categories of hardware or specific types of storage storage packages, rather than the broad classification for auxiliary hardware expansion components.
  
  

The correct answer is ROM because Read-Only Memory chips are manufactured or programmed with static code that remains fixed after production.

• ROM: This is the correct choice. While PROM represents a specialized, programmable variation, public service examination keys standardly map the general 'programmed chip' definition directly to ROM, as it contains pre-flashed, unalterable background runtime instructions.


• Incorrect Options:
  
  
  
  • RAM: This is incorrect. Random Access Memory is volatile, unprogrammed workspace memory that is wiped clean every time the computer power cycles.