MCQs Computer 8

by

These MCQs about computer tests cover various topics related to the Basics of Computer Studies.

MCQs about computer hardware, software, and its working

1. Fax Modem is an example of

 
 
 
 

2. The function key-pad consists of

 
 
 
 

3. A compiler translates the source program into machine codes in

 
 
 
 

4. All arithmetic and logical manipulation is done by the

 
 
 
 

5. In Binary language, the instructions are written in a series of

 
 
 
 

6. Which of the following is not hardware

 
 
 
 

7. A digital computer works with digits

 
 
 
 

8. One Mega-Byte is equal to

 
 
 
 

9. The base of the Binary system is

 
 
 
 

10. A set of instructions that run the computer are

 
 
 
 

11. CPU is called ________ of computer.

 
 
 
 

12. Display on the computer screen is

 
 
 
 

13. DOS and Microsoft Windows are examples of

 
 
 
 

14. A binary digit is commonly called

 
 
 
 

15. The printer is an _________ device.

 
 
 
 

16. The electronic and mechanical components of acomputer are known as

 
 
 
 

17. The term gigabytes refers to

 
 
 
 

18. Joystick is an example of

 
 
 
 

19. Which of the following is not an arithmetic operation

 
 
 
 

20. The wall clock is an example of a

 
 
 
 

21. In computer studies, DOS stands for

 
 
 
 

22. In Assembly language, the program is written in

 
 
 
 

23. A high-speed memory built into the processor is called

 
 
 
 

24. The most common input devices are

 
 
 
 

25. The types of language processors are:

 
 
 
 

26. In computer studies, RAM stands for

 
 
 
 

27. The cursor on the screen can be moved by

 
 
 
 

28. The categories of system software

 
 
 
 

29. C++ is a

 
 
 
 

30. CD-ROM is a type of

 
 
 
 

The greatest scientists of their era, Abu Jaffar Muhammad Ibn Musa Al-Khawarizmi (780-850), Alan Mathison Turing (1912-1954), and John Von Neuman (1903-1957) took part in the invention of computers. A mathematician and a scientist (of France) Blaise Pascal developed the first mechanical computing machine called “Paccaline” in 1642. Leibnitz invented the machine and named it the “Multiplier Wheel” to perform basic arithmetic operations such as addition, subtraction, multiplication, and division.

The “MUltiplier Wheel” machine was further modified in 1971. In 1833 Charles Babbage invented the “Analytical Engine” which was the first programmable computer. The basic units of the Analytical Engine were (I) A storage, (ii) A mill, and, (iii) A control unit. Mauchly and J.P. Ekert at Moor School of Engineering in the USA gave the name to the computer as “Electronic Numerical Integrator and Calculator (ENIAC)”.

Online MCQs Computer

  • A set of instructions that run the computer are
  • The cursor on the screen can be moved by
  • A digital computer works with digits
  • CD-ROM is a type of
  • A high-speed memory built into the processor is called
  • In Binary language, the instructions are written in a series of
  • In Assembly language, the program is written in
  • The types of language processors are:
  • A compiler translates the source program into machine codes in
  • CPU is called of computer.
  • Which of the following is not hardware
  • Display on the computer screen is
  • Fax Modem is an example of
  • The categories of system software
  • The electronic and mechanical components of a computer are known as
  • The wall clock is an example of a
  • The most common input devices are
  • One Mega-Byte is equal to
  • The function key-pad consists of
  • In computer studies, DOS stands for
  • In computer studies, RAM stands for
  • A binary digit is commonly called
  • Joystick is an example of
  • All arithmetic and logical manipulation is done by the
  • Which of the following is not an arithmetic operation
  • The printer is an _________ device.
  • The base of the Binary system is
  • DOS and Microsoft Windows are examples of
  • C++ is a
  • The term gigabytes refers to
MCQs Computer

In 1944 John Neumann gave the idea to store programs electronically inside the computer. It was the final breakthrough in computers. From 1944 onward, electronic computers were divided into five generations. First-generation (1942-1959): These computers were very large in size, slow in speed, unreliable, and difficult to maintain. Second-generation (1959-1965): These computers were small in size but fast in speed. Third-generation (1965-1970): These computers were small in size but very fast. Fourth-generation (1970-1980): in these computers, microprocessors were used. Fifth-generation (1980-Owward): These computers are very very fast and can perform millions of instructions per second. There is the ability to reason and draw inferences like human beings.

Visit MCQs Statistics Website

Technologies For Data Statistics and Testing

by

Introduction to Technologies for Data Statistics and Testing

Data and its analysis a crucial aspects for modern businesses to consider. This importance is due to the extreme competitiveness in business as each company with their rivals for sales. Because of this, businesses will resort to investing in various strategies to get an edge over the competition through the use of technology. Technology has been progressing rapidly, with simple things like even becoming technically advanced. One advanced form of technology that companies invest in deals with data statistics and testing. The technology can help to make sense of data, analyze trends, and test products. Researchers and technology-related companies can then make informed decisions with the data backing them up and reducing risks. There are various such technologies available, and in this article, we will look at them. 

Technologies For Data Statistics And Testing

Types of Data Statistics and Tests

Many technologies, mostly software programs, can help present data in useful graphical forms where trends are visible. You can then use these graphics to compare, analyze, and further process to achieve the desired result or make a decision. There are various tests and statistics the data can be presented in. Here are some of the more common ways that this data is processed. These are: 

  • Exploratory Data Analysis (EDA): This is an integral part of data science that forms the basis for machine learning and statistics. Data scientists can use it to test for various statistical qualities like outliers and correlation. 
  • Regression and Classification: This is an essential part of statistical models as it helps to establish a relationship in raw data. This data can then be classified into different data models
  • Forecasting: Forecasting can identify trends in data and then estimate how it will act in the future. This is important for many businesses. 
  • Data Grouping: This can be used to group data into different classifications to organize raw data. 

Which technology can be used to achieve this?

These technologies can be advanced and straightforward, depending on the complexity of the required statistics. They can do some or most of the statistics mentioned above. You can use this software across various applications that vary from simple school experimentation to advanced business decision-making. These software tools also specialize in specific niches according to the type of statistics and data testing required. Here are some of these software programs: 

MATLAB

MATLAB is an advanced analytical tool that is used extensively by scientists and engineers. You can use it across a variety of industries including finance, medical research, and climatology. You can use it to organize and analyze complex data sets that you can use in various flexible ways. These include customizable data visualization, function applications, and report generation. MATLAB is a highly complicated software that may not be suitable for novices. 

Microsoft Excel

Microsoft Excel is a data statistics software program that is a lot more suitable for beginners. While not technically advanced, it can still perform basic functions and data visualization useful for introductory statistics. It is a great way to start in statistics with a decent enough set of tools available. You can even use customizable graphics to generate reports. 

Statistical Analysis Software (SAS)

SAS is a statistical analysis software that is a premium solution used by many companies in business and research. You can use any data set and subject them to the latest statistical techniques and methods. You can also create a large variety of charts and graphs to present this data visually. You can use either the GUI provided by the software or make up your script for complex statistical analysis. 

To sum up

Data analysis is an essential aspect for most industries to consider. This is because it can help them get a competitive edge in the market. Data statistics and testing are one such aspect that can help companies look at trends and make decisions based on them. There are a variety of statistical tests and software that you can use, which we have discussed in this article. We hope it has provided you with great insight into technologies for data statistics and testing.

https://itfeature.com

https://rfaqs.com

GRE Mathematics 2

by

The GRE mathematical reasoning section tests your knowledge of arithmetic, basic algebra, applied mathematics, elementary geometry, and common graphs and charts. Let Starts with the GRE Mathematics quiz.

Please go to GRE Mathematics 2 to view the test

GRE Mathematics Test with Answers

MCQs GRE Mathematics with Answers

  • ABC works two part-time jobs. One week ABC worked 8 hours at one job, earning $\$150$, and $4.5$ hours at the other job, earning $\$90$. What were his average hourly earnings for the week?
  • In a cafeteria, the people are either faculty members or students. The number of faculty members is 15% of the total number of people in the cafeteria. After some of the students leave, the total number of persons remaining in the cafeteria is 50% of the original total. The number of students who left is what fractional part of the original number of students?
  • In a certain population, 40% of all people have biological characteristics $X$; the others do not. if 8000 people have characteristic $X$, how many people do not have $X$?
  • If $3x-5=x+11$, then $x=$?
  • If $x+y=8$ and $2x-y=10$ then $x=$?
  • $2000 amount is deposited into a savings account that earns interest at the rate of 10% per year, compounded semi-annually. How much money will there be in the account at the end of one year?
  • A car dealer who gives a customer a 20% discount on the list price of a car still realizes a net profit of 25% of the cost. If the dealer’s cost is $4800 what is the usual list price of the car?
  • If the value of a piece of property decreases by 10% while the tax rate on the property increases by 10%, what is the effect on the taxes?
  • A certain photo state machine produces 13 copies every 10 seconds. If the machine operates without interruption, how many copies will it produce in an hour?
  • If $x=\frac{y}{7}$ and $7x=12$, then $y=?$
  • If $x=k+\frac{1}{2}=\frac{k+1}{2}$, then $x=$?
  • If $7-x=0$, then $10-x=$?
  • For how many 3-digit whole numbers is the sum of the digits equal to 3?
  • If $6k^2+k= 2$ and $k>0$, then $k$ must equal which of the following?
  • If the radius of a circle is increased by 1 unit, the ratio of the new circumference to the new diameter is:

https://itfeature.com

Number System Test 3

by

The Post is about the Number System Test from Mathematics of Intermediate Part-I (First Year). Let us start with the Online Number System Quiz with Answers. MCQs are about the number system Test for the preparation of mathematics.

Please go to Number System Test 3 to view the test

A numeral system is a way of expressing numbers; that is, it is a mathematical writing system or notation used to represent the numbers of a given set consistently by using either digits or other symbols. The same sequence of symbols may represent different numbers in different numeral systems.

Number System

Decimal Number System

The commonly used number system is the decimal positional numeral system. The decimal refers to 10 symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 to construct all numbers.

In mathematics courses you have heard about number systems of whole numbers and real numbers, however, in the context of computer systems, the other types of number systems are (i) The decimal number system, (ii) The binary number system, (iii) The octal number system and, (iv) The hexadecimal number system.

MCQs Number system Test

  • If $a+ib$ is a complex number then its conjugate is
  • If $a+ib$ is a complex number then its conjugate is
  • If $z$ is any real number then its conjugate is
  • If $k$ is any real number and $a+ib$ is a complex number then
  • The additive identity in a set of complex numbers is
  • The multiplicative identity of a complex number is
  • The additive inverse of $(a, -b)$ is
  • The multiplicative inverse of $(a, -b)$ is
  • (0, 1) is equal to
  • $(0, 1)^2$ is equal to
  • $(0, 1)^3$ is equal to
  • $(0, 1)^4$ is equal to
  • $(-i)^{19}$ is equal to
  • $(-1)^{-\frac{21}{2}}$ is equal to
  • (0, 3) (0, 5) is equal to
  • The sum of two conjugate complex numbers is
  • The product of two conjugate complex numbers is
  • The multiplicative inverse of $(-4, 7)$ is
  • The factors of $3(x^2+y^2)$ are
  • The real part of $\frac{2+i}{i}$ is equal to

R Programming Language: RFAQs.com

Also, See MCQs about Basic Statistics