Answer :
- Which of the following is a volatile memory?
Volatile memory is a type of computer memory that requires power to maintain the stored information. When the power is turned off, all data is lost. Among the options given, b) RAM is the volatile memory. RAM (Random Access Memory) temporarily holds data that is being processed by the CPU and is erased when the computer is turned off.
- The main chip on the motherboard that controls all activities is:
The CPU (Central Processing Unit) is the main chip on the motherboard that controls all computer activities, making processes run. It performs all the arithmetic, logic, control, and input/output operations. Therefore, the correct answer is b) CPU.
- Cards to connect devices to the motherboard are attached via:
The correct option is a) Expansion Slot. Expansion slots are connectors on the motherboard that allow various cards, like graphics cards, sound cards, and network cards, to be added, expanding the computer’s capabilities.
- Which is designed to control computer operations?
System software is designed to control the computer hardware and software resources. Its primary role is to act as a bridge between the user applications and the hardware. Therefore, the right choice is b) System SW.
- Which of the following is system software?
b) Windows is an example of system software. It is an operating system that manages hardware resources and provides services for application software.
- Software given free for unlimited time is:
Freeware is software that is available at no cost for an unlimited period. Therefore, the correct answer is d) Freeware.
- Which memory improves computer speed?
Cache memory is a small, high-speed storage layer that holds frequently accessed data to increase the overall speed of a computer. Thus, the correct answer is d) Cache.
- Which OS allows many users simultaneously?
A multi-user operating system allows multiple users to use the computer simultaneously, sharing its resources. So, the correct option is c) Multi-user.
- Which is an open-source OS?
Linux is a popular open-source operating system where the source code is available for modification and use by anyone. Therefore, the correct answer is c) Linux.
- Fourth generation computers period:
The fourth generation of computers started with the development of microprocessors, which began around 1971. Therefore, the correct period is c) 1971-Present.
- Which is a non-impact printer?
Non-impact printers print without striking a ribbon onto paper, unlike dot matrix or other impact printers. Among the options, b) Laser is a non-impact printer. It uses lasers and toner to produce images on paper.
- Which controls computer operations?
Just like question 4, system software controls computer operations. So, the answer remains b) System SW.
- Which is a communication device?
A NIC (Network Interface Card) is a communication device that allows computers to connect to a network. Hence, the correct answer is b) NIC.
- CPU part for arithmetic and logic operations:
The Arithmetic Logic Unit (ALU) is responsible for performing arithmetic and logical operations in the CPU. Therefore, the correct answer is b) ALU.
- Which is an application software?
MS Excel is an application software designed for data organization, calculation, and analysis through tools like spreadsheets. Therefore, the correct answer is c) MS Excel.
