Exam 1: Introduction to Computers and the Internet
Explain the importance of green computing.
Answers will vary. The increasing use of computers in our society has created a variety of environmental concerns. The term green computing refers to the use of computers in an environmentally friendly manner. Minimizing the use of natural resources, such as energy and paper, is one aspect of green computing. In 1992, the U.S. Environmental Protection Agency (EPA) introduced ENERGY STAR as a voluntary labeling program designed to identify and promote energy-efficient products in an effort to reduce greenhouse gas emissions. An ENERGY STAR-qualified computer will use between 30% and 75% less energy, depending on how it is used. Today, the ENERGY STAR label appears on computers, office equipment, residential heating and cooling equipment, major appliances, lighting, home electronics, and more. Eco-labels-environmental performance certifications-are used in other countries as well.
The high cost of electricity has made power consumption and heat generation by computers key concerns for businesses and individuals. Although computers have become more energy efficient, they can still draw quite a bit of power when they are not being used. For example, servers use 60% of their maximum power while idle. In addition, computers, home electronics, and home appliances often draw power even when they are turned off. Consolidating servers can help businesses reduce energy cost; turning off devices and unplugging mobile device chargers when they are not being used can help individuals save power.
In addition to more energy-efficient hardware, alternate power sources are being developed for greener computing. For instance, solar power is a growing alternative for powering electronic devices, including computers and mobile devices. With solar power, solar panels convert sunlight into electricity, which is then stored in an external battery or directly in the battery of a connected device. Solar charging capabilities are being built into a variety of mobile accessories, such as computer and tablet cases and backpacks. Please see the section "Computers and Society" for more information.
Identify the difference between data and information from the following options.
C
An email address consists of an IP address (a unique identifying name), followed by the @ symbol, followed by the domain name for the computer that will be handling that person's email.
False
Kevin has designed a computer that can fit on or next to a piece of furniture so that it can be used by people at home or office. Conventional personal computers that are designed to fit on or next to a piece of furniture are often referred to as _____.
Many mobile devices can perform Internet searches and other tasks via _____.
A(n) _________ is a device that is designed to be used in conjunction with a company network instead of using local hard drives for storage.
A)network hub
B)thin client
C)coupled modem
D)enterprise router
Case 1-1 Casey is learning about the types of servers and more powerful computers available. She has asked her friend Burt, an expert on computers and its uses, to quiz her.
Burt describes an incredibly expensive computer designed to focus all of its computing power on one specific task at a time that can handle applications requiring speed, accuracy, and processing capabilities. Casey identifies the type of computer to be a(n)_____.
Case 1-3 Damon asks his friend Tanya to test his understanding on computer and business ethics.
Tanya provides a scenario to Damon where a student copies and pastes information from various online documents to create a research paper, without crediting the original authors. The paper is only for school use and will not be shared or sold outside of school. Damon replies saying that this is an act of _____.
Self-driving cars contain a large number of mainframe computers which enable the car to safely operate without a driver.
_____ runs a computer and allows people to use the computer to perform specific tasks, such as creating letters, preparing budgets, managing inventory and customer databases.
Computer professionals who are responsible for designing computers to be used within their companies are the _____.
The instructions that are used to tell the computer what to do to accomplish tasks are known as hardware.
Briefly explain the roles of a computer user and a software professional.
Roger, an entrepreneur of a software industry, decides to use a system that will run the programs needed to meet the different needs of a wide variety of users during business hours. This system also performs large processing tasks, such as payroll and billing. Which of the following systems should Roger use?
Which of the following statements is true of Internet Protocol version 6 (IPv6)?
One trend involving servers, as well as mainframe computers, is _____ that is the creation of practical versions of a computing resource.
Raw, unorganized facts are termed as _________.
A)information
B)data
C)program
D)terminal
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