Latest Computers General Knowledge(GK) Questions and answers

1 .

What is the number of bits needed for an address in a 4 K memory?

A)

4

B)

8

C)

12

D)

16

Correct Answer : 12

12 bits needed for an address in a 4K memory

Likewise, you need 20 bits to address every byte in a megabyte, and 30 bits to address every byte in a gigabyte. 232 = 4294967296, which is the number of bytes in 4 gigabytes, so you need a 32 bit address for 4 GB of memory.

As I mentioned before, it's the size of a machine word. Machine word is the amount of memory CPU uses to hold numbers (in RAM, cache or internal registers). 32-bit CPU uses 32 bits (4 bytes) to hold numbers. Memory addresses are numbers too, so on a 32-bit CPU the memory address consists of 32 bits.

2 .

A storage area used to store data to compensate for the difference in speed at which the different units can handle data is

A)

Memory

B)

Buffer

C)

Address

D)

Accumulator

Correct Answer : Buffer

A buffer, also called buffer memory, is a portion of a computer's memory that is set aside as a temporary holding place for data that is being sent to or received from an external device, such as a hard disk drive (HDD), keyboard or printer.

3 .

A notation for defining the form and structure of data is known as

A)

Data definition language

B)

Data description language

C)

Binary language

D)

Data channel

Correct Answer : Data definition language

A data definition language or data description language (DDL) is a syntax similar to a computer programming language for defining data structures, especially database schemas.

4 .

Control of computer system or subsystem operation by an operator who may intervene at arbitrary times is

A)

Shift register

B)

Manual control

C)

Mapping

D)

None of the above

Correct Answer : Manual control

5 .

The data bus in 8080A/8085 microprocessor is a group of

A)

eight unidirectional lines that are used for I/O devices

B)

eight lines used to transfer data among the registers

C)

sixteen bidirectional lines that are used for data transfer between the microprocessor and memory

D)

eight bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O and memory

Correct Answer : eight bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O and memory

The data bus in 8080A/8085 microprocessor is a group of eight bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O and memory.

Diagram to represent bus organization system of 8085 Microprocessor. It is a group of conducting wires which carries address only.Address bus is unidirectional because data flow in one direction, from microprocessor to memory or from microprocessor to Input/output devices

It is unidirectional.In Intel 8085 microprocessor, Address bus was of 16 bits. This means that Microprocessor 8085 can transfer maximum 16 bit address which means it can address 65,536 different memory locations. This bus is multiplexed with 8 bit data bus.

An address bus is a computer bus architecture used to transfer data between devices that are identified by the hardware address of the physical memory (the physical address), which is stored in the form of binary numbers to enable the data bus to access memory storage.

6 .

A new technology which provides the ability to create an artificial world and have people interact with it is called

A)

alternative reality

B)

3-D reality

C)

virtual reality

D)

televirtuality

Correct Answer : virtual reality

A new technology which provides the ability to create an artificial world and have people interact with it is called virtual reality.

an artificial environment which is experienced through sensory stimuli (such as sights and sounds) provided by a computer and in which one's actions partially determine what happens in the environment; also : the technology used to create or access a virtual reality.

Virtual reality is an artificial environment that is created with software and presented to the user in such a way that the user suspends belief and accepts it as a real environment. On a computer, virtual reality is primarily experienced through two of the five senses: sight and sound.

7 .

A software package to implement a data base is

A)

DBMS

B)

Database

C)

System analysis

D)

None of the above

Correct Answer : DBMS

The database management system (DBMS) is the software that interacts with end users, applications, and the database itself to capture and analyze data.

8 .

A type of simulation method using random numbers to determine the evolution of a system is

A)

Monte carlo

B)

Monadic

C)

Padding

D)

Model dispersion

Correct Answer : Monte carlo

9 .

SPSS stands for

A)

Statistical Package for Systems Science

B)

Statistical Package for Sociai Science

C)

Systems Package for Social Science

D)

All of the above

Correct Answer : Statistical Package for Sociai Science

Statistical Package for the Social Sciences : hadlai (Tex) Hull developed and released the first version of a statistical software package for mainframe computers and using punch cards. They named it the "Statistical Package for the Social Sciences" or "SPSS" for short.

10 .

Which of the following are not likely to be found on a PC main circuit board

A)

RAM chips

B)

ROM chips

C)

Microprocessor chips

D)

LCD clocks

Correct Answer : LCD clocks

LCD clocks are not likely to be found on a PC main circuit board.

The CPU requires a fixed number of clock ticks (or clock cycles) to execute each instruction. The faster the clock, the more instructions the CPU can execute per second. Clock speeds are expressed in megahertz (MHz) or gigahertz ((GHz).

Therefore, clock is used to bring some regularity to the system. So, a clock signal is a particular type of signal that oscillates between a high and a low state and it is used to coordinate actions of digital circuits. A clock signal is produced by a clock generator.