Computer Awareness Questions for NIACL Assistant


Which of the following is a term related with scanner?  

   A.) Laser
   B.) TWAIN
   C.) Cartridge
   D.) Both (a) and (b)

Answer: Option 'D'

Laser is the term related with scanner as there are laser scanners. TWAIN is an applications programming interface (API) and communications protocol that regulates communication between software and digital imaging devices, such as image scanners. It is a widely-used program that lets you scan an image (using a scanner) directly into the application.


FORTRAN is a programming language. It is more suitable for _______.

   A.) business applications
   B.) marketing applications
   C.) scientific applications
   D.) statically calculative applications

Answer: Option 'C'

FORTRAN is the best and only major programming language for scientific applications. It is designed for performing large and complex scientific numerical computing.


__________ ensures secure transfer of data over an unsecured network, such as the Internet.

   A.) Antivirus
   B.) Hacking
   C.) Cracking
   D.) Cryptography

Answer: Option 'D'

In cryptography, data are sent in such a way that they look completely different from the original data. Thus, cryptography ensures secure transfer of data over an unsecured network.


A nibble refers to: 

   A.) 4 bits 
   B.) A value equal to a kilobyte 
   C.) A value equal to a megabyte 
   D.) The smallest unit of digital information 

Answer: Option 'A'

Nibble= 4 Bits


The SubSeven is an example of :

   A.) antivirus
   B.) Spyware
   C.) Spam
   D.) Trojan horse

Answer: Option 'D'

SubSeven is a Trojan horse program that appears or pretends to be a genuine application, but actually causes damage to the executable files on the computer.


Which of the following component is a part of RAM? 

   A.) Magnetic cores 
   B.) Micro-Processors 
   C.) Photoelectric cells 
   D.) Floppy disks 

Answer: Option 'A'

Magnetic-core memory was the predominant form of random-access computer memory for 20 years between about 1955 and 1975. Such memory is often just called core memory, or, informally, core.


Which of the following threads is used in an operating system?

   A.) User-level thread
   B.) Kernel-level thread
   C.) Hardware-level thread
   D.) Both (a) and (b)

Answer: Option 'D'

There are only two types of threads present in an operating system. One is user-level thread and the other is kernel-level thread. User-level threads are the threads which are controlled and managed by the user of the computer system. Kernel-level threads are the threads which are controlled and created by the operating system. These threads are at the kernel level of the computer system. Kernel is the one who creates the threads.


Which among the following is a software that uses a pattern-matching technique to examine all files on a disk looking for harmful code?

   A.) Multimedia Player  
   B.) Backup software 
   C.) Utility programs 
   D.) Antivirus Software

Answer: Option 'D'

Antivirus or anti-virus software, sometimes known as anti-malware software, is computer software used to prevent, detect and remove malicious software.


Which of the following conditions is responsible for occurrence of context switching?

   A.) When one process expires and a new one is loaded from a ready queue
   B.) No processes are in the ready queue
   C.) When a process is running
   D.) When the CPU is at rest

Answer: Option 'A'

A context switching comes into the picture when the time period provided for one process is over and a new process is loaded from the ready queue for processing.


Which among the following is the most suitable type of network that phone lines would use?

   A.) WAN
   B.) LAN
   C.) WWAN
   D.) CAN

Answer: Option 'A'

Wide Area Network (WAN) usually uses telephone lines for connectivity, as WAN is spread over a large area and offers Internet-related services such as browsing, email, chatting, etc.

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