Notes, abstracts, papers, exams and problems of Computers

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Módulo 1: Conceptos básicos de informática

Classified in Computers

Written at on English with a size of 1.73 KB.

Módulo 1

1- 1c 2a 3d 4e 5f 6b

2.-

  1. keep records
  2. make video calls
  3. access the Internet
  4. dispense money
  5. store information
  6. store ringtones

3.-

1f 2e 3d 4a 5c 6b

4.-

  1. The CPU is a chip which acts as the brain of a computer
  2. A hacker is a person who invades a network's privacy
  3. A modem is an electric device that enables a computer to communicate with another over telephone lines
  4. A software engineer is someone who writes computer programs
  5. The mobile phone is a device that people use for communicating with each other

5.-

1e 2b 3g 4d 5f 5a 7c

6.-

  1. Do you need any help?
  2. We're looking for a portable computer
  3. They are both very fast
  4. What's the storage capacity of the hard disk?
  5. It has a 15.4" LCD screen
  6. How much do they cost?
  7. You're obviously getting a faster computer, with more memory

7.

... Continue reading "Módulo 1: Conceptos básicos de informática" »
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I is correct ii is correct

Classified in Computers

Written at on English with a size of 5.75 KB.

Questions:

1.What is formula Count if?

COUNT IF is a function to count cells that meet a single criteria.

2.When can be used formula Count if?

COUNT IF can be used to count cells with dates, numbers, and text that Match specific criteria.

3.Which are the logical operators that supports The Count if?

. The COUNTIF function supports logical operators (>, <, <>, =) and wildcards (*,?,””) for partial matching.

4.Which is the principal purpose the Count If?

Count cells that match criteria

5.What is the Return value for The Count if?

A number representing cells counted.

6.How this formula works?

COUNTIF counts the number of cells in the range that Contain numeric values less than X and returns the result as a number.

7.Complete the following statements:

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Science

Classified in Computers

Written at on English with a size of 7.29 KB.

Parser = program that translates terms in concrete syntax into abstract syntax
   • In our language (Plai not racket) we’ll use {braces} instead of (parentheses), so we can distinguish concrete syntax from Scheme just by looking at the delimiters.
   • The parser needs to identify what kind of program it’s examining, and convert it to the appropriate abstract syntax. To do this, it needs a clear specification of the concrete syntax of the language. We’ll use Backus-Naur Form (BNF), named for two early programming language pioneers. A BNF description of rudimentary arithmetic looks like this:
<AE> : : = <num>
| {+ <AE> <AE>}
| {- <AE> <AE>}
o The in the BNF is called a non-terminal, which means
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Understanding SEO: A Comprehensive Guide to Search Engine Optimization

Classified in Computers

Written at on English with a size of 4.24 KB.

Understanding Search Engine Optimization (SEO)

Crawling and Indexing

Web crawlers, also known as bots, robots, or spiders, are software programs designed to follow links, gather information, and send it back to search engines for indexing. This process allows search engines to understand the content and structure of websites.

Evolution of Google Search Algorithms

Over the years, Google has implemented various algorithm updates to improve search results and combat spam. Some notable updates include:

  • Google Dance (2002): Click-through rates started influencing search rankings.
  • Austin (2004): Targeted websites with keyword stuffing.
  • Google Suggest (2008) & Google Instant (2010): Introduced predictive search based on search history.
  • Hummingbird (2013)
... Continue reading "Understanding SEO: A Comprehensive Guide to Search Engine Optimization" »
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Key Concepts in Information Systems and Technology

Classified in Computers

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Expert systems

have four major components. Which of the following is not one of the four?

  • Interference motor

Major categories of E-commerce

include all of the following except which one?

  • Business to department (B2D)

Computing environment

that is always present and is capable perceive the surroundings and offer recommendations based on individual need and requirement is known as:

  • Contextual computing

AI application

includes Bots, Virtual agents, and Intelligent virtual agents. Which of the following best describes this AI technology?

  • Intelligent agents

Application used in all the functions of a business

which supports decision making throughout the organization is known as___

  • Enterprise system

Four phases of the decision-making process

in a typical organization... Continue reading "Key Concepts in Information Systems and Technology" »

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Comprehensive Guide to HTML Headings: Types, Usage, and SEO Optimization

Classified in Computers

Written at on English with a size of 2.25 KB.

Types of HTML Headings

HTML headings are classified into six levels, ranging from <h1> to <h6>, with <h1> representing the most important heading and <h6> the least important.

Usage of HTML Headings

Headings play a crucial role in structuring your web content and enhancing its readability. They help:

  • Organize content: Headings divide your content into logical sections, making it easier for users to navigate and understand.
  • Establish hierarchy: The different heading levels create a visual hierarchy, indicating the relative importance of each section.
  • Improve accessibility: Headings provide context and structure for screen readers, assisting users with disabilities.

SEO Optimization of HTML Headings

Headings are significant for... Continue reading "Comprehensive Guide to HTML Headings: Types, Usage, and SEO Optimization" »

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Characteristics and Requirements of Programming Languages

Classified in Computers

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A programming language is an artificial language designed to express computations that can be performed by a machine, particularly a computer. Programming languages can be used to create programs that control the behavior of a machine, to express algorithms precisely. Thousands of different programming languages have been created, mainly in the computer field, with many more being created every year. Most programming languages describe computation in an imperative style, i.e., as a sequence of commands.

Requirements and Objectives

A computer programming language is a language used to write computer programs, which involve a computer performing some kind of computation or algorithm and possibly control external devices such as printers, disk drives,... Continue reading "Characteristics and Requirements of Programming Languages" »

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l

Classified in Computers

Written at on English with a size of 3.88 KB.

Write your text here!

PRIMARY KEY
SELECT * from Sys.Objects WHERE Type='PRIMARY'

SELECT DISTINCT ID FROM Customers

25. Between Monday and Tuesday

SELECT ID FROM Orders WHERE
Date BETWEEN ‘01/12/2018’ AND ‘01/13/2018’

Finding the Intersection of Two Tables

SELECT ID FROM Customers INNER
JOIN Orders ON Customers.ID = Orders.ID

Copying Selections from Table to Table 

INSERT INTO Yearly_Orders
SELECT * FROM Orders
WHERE Date<=1/1/2018


HAVING: Atleast one customer from region

SELECT COUNT(ID), Region
FROM Customers
GROUP BY Region
HAVING COUNT(ID) > 0;

MAX/MIN/AVG/
8)Display the maximum salary from emp table.a)select max(sal) from emp;
29)Display the minimum salary from emp table.a)select min(sal) from emp;
30)Display
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Fundamentals of Data Structures and Algorithms

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Data Structure (Syllabus)

Semester & Branch: 3rd sem CSE/IT Teachers Assessment : 10 Marks
Theory: 4 Periods per Week Class Test : 20 Marks
Total Periods: 60 Periods per Semester End Semester Exam : 70 Marks
Examination: 3 Hours TOTAL MARKS : 100 Marks

Objective :

The effectiveness of implementation of any application in computer mainly depends on the that how effectively its information can be stored in the computer. For this purpose various -structures are used. This paper will expose the students to various fundamentals structures arrays, stacks, queues, trees etc. It will also expose the students to some fundamental, I/0 manipulation techniques like sorting, searching etc

1.0 INTRODUCTION: 04

  • 1.1 Explain Data, Information, data types
  • 1.2 Define
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Www.Notes for human resource management in a business context 2/e

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PROCESS: BASIC DATA STRUCTURE & SYSTEM CALLS
(CHAPTER 3)
1) What is a process?

Program in execution
2) What are Lightweight Processes in Linux?

Processes which can offer better support for Multithreaded applications.
3) Explain what is meant by multithreaded application. Describe how Multithreaded
Applications are implemented in linux. Give three examples of POSIX-compliant Pthread
Libraries.

A straightforward way to implement Multithreaded applications is to associate a lightweight process with each thread.

In this way, the threads can access the same Set of application data structures by simply sharing the same memory address Space, the same set of open files, and so on; at the same time, each thread can Be scheduled independently by the... Continue reading "Www.Notes for human resource management in a business context 2/e" »

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