CIS Study Sheet/Chapter 3
Only about __ percent of e-waste is eCycled (electronics recyclying).
12
how many peripheral devices can you connect with a USB port?
127
It is estimated by one publisher that, on average, libraries replace a print book after __ checkouts.
26
The screens on mobile devices are small-often between ____ and ____ inches
3 and 5 inches
Video clips that users of video message services send are typically how long?
30 seconds
what is the difference between a brownout and a blackout?
A brownout is a prolonged (more than 1 minute) undervoltage. A blackout is a complete power failure.
What are the characteristics of each type? (see also figure 3-16)
A point-and-shoot camera has lenses built into it, a screen that displays an approximation of the image to be photographed, and features such as GPS, sometimes waterproof, zoom, autofocus capability, built-in flash, stores images on memory cards, and enables you to view and sometimes edit images directly on camera. An SLR camera is heavier than a point-and-shoot camera. It also has interchangeable lenses and uses a mirror to display on its screen an exact replica of the image to be photographed.
What are the differences between the two form factors of the tablet?
A slate tablet does not contain a physical keyboard while a convertible tablet does.
Which companies sell personal computers that use the Windows operating system?
Acer, Dell, Lenovo, HP, Samsung
what is the difference between an overvoltage and an undervoltage?
An undervoltage occurs when the electrical supply/voltage drops. An overvoltage occurs when the incoming electrical supply/voltage increases.
Which company sells personal computers that use the Mac operating system?
Apple
What is the main service provided by a backup server?
Backs up and restores files, folders, and media
what are some everyday products that contain embedded computers?
Consumer electronics (phones, TVs, cameras and video recorders, DVD players and recorders, answering machines); Home automation devices (thermostats, sprinkling systems, security systems, vacuum systems, appliances, lights); Automobiles; Process controllers and robotics; Computer devices and office machines
How does a DVD kiosk work?
Customers can select movies online or directly at the DVD kiosk via a touch screen/some other input device on the kiosk. After presenting identifying info and swiping a credit card through the reader, the DVD kiosk dispenses the rented movie to the customer. The customer returns it to any of the vendor's nationwide DVD kiosks, at which time the customer's account is charged a fee based on the time elapsed
What services do a vending kiosk provide?
Dispense item after payment is received. Examples include DVD rentals and license plate renewals.
_______ consists of discarded computers and mobile devices.
E-waste
How long is a typical short text message?
Fewer than 300 characters
What are the 5 types of self-service kiosks?
Financial, photo, ticket, vending, visitor
Some POS terminals are _______, which allows updates to inventory at geographically separate locations
Internet capable
Visitor kiosk
Manage and track visitors upon check-in. Located in businesses, police stations, schools, hospitals, and other areas where access is controlled or registration is required.
What is the main service provided by a network server?
Manages network traffic
What is the main service provided by a print server?
Manages printers and documents being printed
What are the options available for typing on a smartphone (figure 3-15)
On-screen keyboard, swipe keyboard app, mini keyboard, keypad, slide-out keyboard, portable keyboard, virtual keyboard, speech to text
What services do a photo kiosk provide?
Print photos from digital images. Sone allow editing of digital photos. Users may print directly at kiosk or may send an order to a photo lab to be printed.
What services do a ticket kiosk provide?
Print tickets. Located in airports, amusement parks, movie theaters, rental companies, and train stations
What is the main service provided by a game server?
Provides a central location for online gaming
What is the main service provided by a home server?
Provides storage, internet connections, or other services to computers and devices in a household
Be familiar with smartphone features beyond the basic phone capabilities
Send and receive email messages and access the web via Wi-Fi or a mobile data plan. Communicate wirelessly with other devices/computers. Function as a portable media player. Include 1+ built-in digital cameras. Talk directly into the smartphone's microphone or into a Bluetooth headset that wirelessly communicates with the phone. Conduct live video calls, where the parties can see each other as they speak. Receive GPS signals to determine a user's current location. Synchronize data and info with a computer or another mobile device. Support voice command so that you can speak instructions to the phone and it responds back to you. Connect to external devices wirelessly, such as via Bluetooth. Serve as a wireless access point.
What are the two popular form factors of the tablet?
Slate tablet and convertible tablet
Which of the form factors is often used in the medical field and other areas where exposure to heat, humidity, and dust is greater?
Slate tablets (does not contain physical keyboard; i.e. iPad)
What is the main service provided by a mail server?
Stores and delivers email messages?
What is the main service provided by a web server?
Stores and delivers requested webpages to a computer via a browser
What is the main service provided by a list server?
Stores and manages email lists
What is the main service provided by a file server/storage server?
Stores and manages files
What is the main service provided by a database server?
Stores and provides access to a database
What is the main service provided by an application server?
Stores and runs apps
What is the main service provided by a domain name server?
Stores domain names and their corresponding IP addresses
What is the main service provided by a FTP server?
Stores files for user upload or download via FTP
True or false: E-waste releases lead, mercury, barium, and other elements into soil and water.
True
which ports are more general-purpose and allow connections to a wide variety of devices?
USB and Thunderbolt
A smartphone is an Internet-capable phone that usually also includes?
a calendar, address book, calculator, notepad, games, browser, and other apps
What are the characteristics of a handheld computer?
a computer small enough to fit in one hand
What is a terminal?
a computer, usually with limited processing power, that enables users to send data to and/or receive information from a server, or host computer
Define mobile device
a computing device small enough to hold in your hand
What is a phablet? (page 3-6)
a device that combines features of a smartphone with a tablet
what is a UPS?
a device that contains surge protection circuits and one or more batteries that can provide power during a temporary or permanent loss of power
what is a USB hub?
a device that plugs i a USB port on the computer/mobile device and contains multiple USB ports, into which you plug cables from USB devices
What is a peripheral device, and be able to give examples? (page 3-2 on the left)
a device you connect to a computer or mobile device to expand its capabilities (i.e. keyboard, mouse, microphone, monitor, printer, scanner, external hard drive, webcam, and speakers)
Define enhanced resolution
a higher resolution (than optical resolution) because it uses a special formula to add pixels between those generated by the optical resolution
Define mainframe
a large, expensive, powerful server that can handle hundreds or thousands of connected users simultaneously.
Define personal computer
a mobile computer/desktop that can perform all of its input, processing, output, and storage activities by itself and is intended to be used by one person at a time
Be familiar with the characteristics of an e-book reader
a mobile device primarily used for reading e-books and other digital publications
What is a server farm?
a network of several servers together in a single location. makes it possible to combine power of multiple servers
Define embedded computer
a special purpose computer that functions as a component in a larger product
what is a CVS (computer vision syndrome)?
a technology-related health condition that affects eyesight
Describe a laptop/notebook computer
a thin, lightweight mobile computer with a screen in its lid and a keyboard in its base
Define optical resolution
actual photographed resolution
what can cause hardware failure?
aging hardware, random events (i.e. electrical power problems), errors in programs or apps. Most common is electrical power variation (overvoltage and undervoltage)
what is ergonomics?
an applied science devoted to incorporating comfort, efficiency, and safety into the design of items in the workplace
Define computer
an electronic device, operating under the contro, of instructions stored in its own memory, that can accept data (input), process the data according to specified rules, produce info (output), and store the info for future use
Define cloud computing
an environment that provides resources and services accessed via the Internet
what is a docking station used for?
an external device that attaches to a mobile computer/device contains a power connection and provides connections to peripheral devices. Similar to a port replicator, but has more functionality.
what is a spike?
an increase in power lasts for less than one millisecond
How does a barcode reader work?
an input device that uses laser beams to read bar codes on products
What are the advantages of a virtual server?
can be created and configured quickly, does not require a new physical server, easier to manage
What is a media library?
collection of stored digital media
Which game controller is a flat electronic device divided into panels that users press with their feet in response to instructions from a music video game?
dance pad
what is a port replicator?
external device that provides connections to peripheral devices through ports built into the device
Which game controller is held with both hands and controls the movement and actions of players or objects in video games or computer games?
gamepad
What are some examples of game controllers? (Figure 3-23)
gamepad, joystick, petals and wheel, dance pad, motion-sensing game controller, balance board
Gaming enthusiasts often choose a _______, which offers high-quality audio, video, and graphics with optimal performance for sophisticated single-user and networked or Internet multiplayer games (page 3-8 bottom)
gaming desktop
what does a connector do?
joins a cable from a port on a peripheral device to a port on the computer/mobile device
people who spend their workday using the computer sometimes complain of _____, ____, and ______ (page 3-36)
lower back pain, muscle fatigue, and emotional fatigue
Be familiar with the characteristics of a game console
mobile computing device designed for single-player or multiplayer video games
What are the options for sending and receiving messages provided by text message services?
mobile to mobile, mobile to email, mobile to provider, web to mobile
Define resolution
number of horizontal and vertical pixels in a display
What services do a financial kiosk provide?
pay bills, add money to prepaid cards and phone plans, and perform other financial activities
In addition to cameras built into phones and other devices, types of digital cameras include...
point-and-shoot and SLR cameras
What are 3 widely used special-purpose terminals?
point-of-sale (POS) terminals, ATMs, and self-service kiosks
What is pairing?
process of initiating contact between two Bluetooth devices and allowing them to communicate with each other
Which of the following is housed in a bay within a metal frame? a. rack server b. tower server c. blader server d. bay server
rack server
Form factors for servers include ______, _____ and ________ (see figure 3-9)
rack, blade, tower
a computer's ___, ____, _____ and ____ determine the category it best fits (page 3-26)
size, speed, processing power, and price
What is an earbud?
small speakers that rest in each ear canal
what are examples of NFC-enabled devices?
smartphones, digital cameras, computers, TVs, and terminals
Examples of mobile devices include?
smartphones, digital cameras, portable and digital media players, e-book readers, and wearable devices
Portable media players enable you to?
store, organize, and play or view digital media (i.e. iPod Touch)
Some tablets include a _______ which looks like a small ink pen that you can use instead of a fingertip to enter data, make selections, or draw on a touch screen
stylus
what are examples of technology-related RSIs?
tendonitis and carpal tunnel syndrome
what does backward compatible mean?
the USB port is able to support older USB devices as well as newer ones
What does the term system unit refer to?
the case that contains and protects the motherboard, internal hard drive, memory, and other electronic components of the computer from damage
What is a supercomputer?
the fastest, most powerful, and most expensive computer. Capable of processing many trillions of instructions in a single second.
what is a port?
the point at which a peripheral device (i.e. keyboard, printer, monitor, etc) attaches to or communicates with a computer/mobile device so that the peripheral device can send data to or recieve info from the computer/mobile device
What is virtualization?
the practice of sharing or pooling computer resources, such as servers or storage devices
Define pixel (pixel element)
the smallest element in an electronic figure/image
An ultrathin laptop that uses a low-power Intel processor often is called an ___________ (page 3-4 middle left)
ultrabook
what is a surge protector, and what does it do?
uses electrical components to provide a stable current flow and minimize the chances of an overvoltage reaching the computer and other electronic equipment. Also called a charge suppressor.
how does Bluetooth technology work?
uses short-range radio signals to transmit data between two Bluetooth-enabled computers/devices
how far apart do Bluetooth devices have to be?
within 33 feet of one another. the range can be extended with additional equipment
How does a motion-sensing game controller work?
you guide on-screen elements with air gestures by moving your body or handheld input device through the air
