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130 Cards in this Set
- Front
- Back
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A ____ is a video camera that displays its output on a Web page.
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Web cam
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____ is the technology of authenticating a person s identity by verifying a personal characteristic.
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Biometrics
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The quality of an LCD depends primarily on its ____.
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resolution
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The refresh rate of a CRT is measured in ____.
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hertz
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A high-quality CRT refreshes itself ____ times a second.
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68
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Printer resolution is measured in ____.
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dots per inch
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A dot-matrix printer is a kind of ____ printer.
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impact
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Two output options for blind users are _____.
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voice output and Braille printer
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A ____ is a small, flat, rectangular pointing device that is sensitive to pressure and motion.
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touchpad
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A ____ is a vertical lever mounted on a base.
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joystick
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A ____ uses pressure to write text and draw lines.
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digital pen
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____ involves reading typewritten, computer-printed, or hand-printed characters from ordinary documents and translating the images into a form the computer can process.
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OCR
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A(n) ____ frequently is used by the banking industry for check processing.
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MICR reader
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A(n) ____ often is found in retail stores to record purchases, process credit or debit cards, and update inventory.
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POS terminal
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____ is the technology of authenticating a person’s identity by verifying a personal characteristic.
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Biometrics
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Which of the following is not a secondary storage medium?
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RAM
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A large business may require as much as ____ bytes of storage.
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50 trillion
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The term for 1 quadrillion is ____.
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petabyte
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Storage devices access data in ____ of a second.
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thousandths
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____ measures the amount of time it takes a storage device to locate an item on a storage medium.
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Access time
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Memory chips access data items in ____ of a second.
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billionths
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1 MB is equal to exactly ____ bytes.
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1,048,576
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Which is not a magnetic storage medium?
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DVD
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Which of the following is not a characteristic of a hard disk?
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chip
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Hard disks spin at 5,400 to ____ rpm.
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15,000
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A _____ occurs when a hard disk s read/write head touches the surface of a platter.
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head crash
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Which is not a type of disk controller?
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CD-ROM
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A(n) _____ stores items by using microscopic pits and lands in its middle layer and is read by a laser beam.
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optical disc
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A(n) _____ disc can be read, written to, and erased.
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DVD+RW
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A typical CD-ROM holds up to ____ of data.
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1 GB
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____ storage requires sequential access of data.
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Tape
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Experts predict that ____ will become the mobile user’s primary storage device.
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USB flash drives
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All of the following are examples of Solid State Storage devices except _____.
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Zip disk
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A large business, commonly referred to as a(n) ____, has hundreds or thousands of employees
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enterprise
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Which has the longest life expectancy?
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microfilm
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Which of the following is not an operating system function?
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word processing
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The operating system typically resides on the computer’s ____.
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hard disk
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The operating system a computer uses is called the ____.
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platform
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When turning on a computer that has been powered off completely, you are performing a ____.
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cold boot
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A(n) ____ computer continues to operate when one of its components fails.
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fault-tolerant
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____ is a concept in which the operating system allocates a portion of a storage medium to function as additional RAM.
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Virtual memory
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The operating system technique of swapping items between memory and storage is called ____.
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paging
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The process called ____ sends print jobs to a buffer instead of sending them immediately to the printer.
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spooling
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Multiple print jobs line up in a ____ within a buffer.
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queue
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To protect sensitive data and information as it travels over a network, a network operating system often ____ it.
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encrypts
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Which of the following is not a utility function?
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controlling the keyboard
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To defragment a disk means to ____.
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reorganize it
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New versions of an operating system usually are ____ compatible.
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downward
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Which of the following is not a type of operating system?
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wireless
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DOS was developed in the early ____.
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1980s
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Linux is ____ software, which means its code is available to the public for use, modification, and redistribution.
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open source
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Novell’s Netware is a(n) ____ operating system.
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network
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A ____ hides within or looks like a legitimate program such as a screen saver.
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Trojan horse
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____ is a program placed on a computer without the user’s knowledge that secretly collects information about the user.
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Spyware
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A ____ is the transmission media on which the data, instructions, or information travel.
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communications channel
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A(n) ____ connects a communications channel to a sending or receiving device such as a computer.
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modem
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____ is a real-time Internet communications service that allows you to exchange messages with one or more online users.
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IM
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Many mobile devices such as PDAs and smart phones have ____ capability built into the device or as an add-on feature.
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GPS
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A ____ is a network that connects computers and devices in ONE geographical area.
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LAN
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A ____ is a network that connects DIFFERENT geographical areas, such as businesses in different cities, or countries.
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WAN
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The Internet is the world’s largest _____.
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WAN
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Some servers, called _____, perform a specific task and can be replaced with other servers of the same type of perform multiple tasks.
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dedicated servers
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The design of computers, devices, and media in a network is called the _____.
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network architecture
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A P2P network sometimes is called a(n) _____ network.
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file sharing
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If a computer or device on a _____ network fails, all devices before the failed device are unaffected, but those after the failed device cannot function.
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ring
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_____ has been adopted as a network standard for Internet communications.
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TCP/IP
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Some computers and devices use the ____ specification to transmit data wirelessly to each other via infrared light waves.
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IrDA
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A(n) ____ is a temporary connection that uses one or more analog telephone lines for communications.
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dial-up line
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Which is the fastest type of line?
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ATM
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Which of the following are network topologies?
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Ring
Star Bus |
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A HomeRF network uses radio waves, instead of cables, to transmit data through the air over distances of up to _____ feet.
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150
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A Wi-Fi home network can send signals up to _____ feet.
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1,500
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Physical transmission media used in communications include _____ cable.
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Coaxial
Twisted Pair Fiber Optic |
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_____ is an electrical disturbance that can degrade communications.
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Noise
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Bluetooth, HomeRF, and Wi-Fi communications technology use _____.
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broadcast radio signals
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Hard Disk
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It is a disk that uses a system of storage that uses magnetic particles to represent and store information. The information is stored in tracks and sectors.
Capacity = 160GB. - 1.5TB |
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Opitical
CDs & DVDs |
They are made from metal, plastic, or lacquer. Information is stored in pits and lands. A laser creates these indentions and less powerful one reads them.
Blue Ray = 100 - 200GB. CD = 65MB. - 1GB. DVD = 4GB. - 17GB. |
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Magnetic Disk
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Uses magnetic particles to store information.
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Floppy Disk
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A kind of magnetic storage.
Capacity - 500KB. - 2MB. |
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Solid State Storage
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It uses flash memory to store information. They have a faster access time than Hard Drives.
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Flash Drive
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A kind of solid state storage.
USB = 512MB. - 64GB. Flash memory = 512MB. - 100GB. |
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Storage
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Holds information for future use.
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Tape
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Magnetic ribbon that is capable of storing large amounts of sequential information.
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Starting a computer
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Turning on the computer is called booting. You can do a cold boot or a warm boot.
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User Interface
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It controls how you enter data into the computer and how it is displayed.
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GUI
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Graphical User Interface. It allows you to interact with the computer through graphics, icons, etc...
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Command Line
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It is an older, more secure, complicated interface. A user enters precise data into the computer.
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Managing Programs
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Multitasking - Process that most computers use. It allows you to have more than one applications open and that appear to be running simultaneously.
Multiprocessing - It is a process that not all computers use. It allows you to have more than one application open and running simultaneously. It uses more than one processor. |
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Managing Files
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A file manager allows you to organize files. It displays them, organizes them into folders, and allows you to copy, rename, more, etc... the files.
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The functions of an Operating System
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Starting a computer
Providing an interface Managing programs, files, and memory Scheduling jobs Monitoring performance |
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Managing Memory
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Memory management's job is to make the best use of RAM, cache, and virtual memory. It holds, organizes, and transmits information.
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Virtual Memory
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It is a type of storage that can work as additional RAM. It is temporary storage and it can be expanded.
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Scheduling Jobs
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It involves the way a computer arranges things in order to process them. When multiple tasks are given, a buffer is created, which is memory that the tasks are placed on. Mutliple jobs line up in a queue on the buffer.
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Configuring Devices
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One kind of a configuring device is a driver. It is a program that tells a computer how to communicate with a device.
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Establishing an Internet Connection
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An operating system provides a way to connect to the internet. It provides a unique IP address. Some operating systems already have a browser installed.
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Monitoring Performance
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A performance monitor inspects and reports information concerning a computer's resources and devices. This helps uses to identify and resolve problems.
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Utility Programs
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AIt is a program that allows a user to perform maintenance jobs. Searching for files, cleaning disks, unistalling programs, etc...
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Describe a Network Operation System
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A network operating system, also called a platform, is the system that determines how a network functions. It allows you to manage and maintain connections.
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List three kinds of security.
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Logging in
Firewall - built in program that detects and protects a computer from attacks File Security - determines who has access to files |
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What is a network?
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It is a group of two or more computers that are connected and share resources and that are uniquely identified by an IP address.
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Describe 3 examples of Networking Communications Applications, as described in the book.
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Web - gigantic collection of documents
Blogs - online journals Fax - transfers and receives information over telephone lines |
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What is a network?
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It is a group of two or more computers that are connected and share resources and that are uniquely identified by an IP address.
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How can you classify networks?
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According to their scope, architecture, and topology.
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Describe 3 examples of Networking Communications Applications, as described in the book.
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Web - gigantic collection of documents
Blogs - online journals Fax - transfers and receives information over telephone lines |
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Describe a LAN
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Local Area Network. It connects computers on one location.
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How can you classify networks?
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According to their scope, architecture, and topology.
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Describe a WAN
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Wide Area Network. It connects computer on more than one location.
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Describe a Peer-to-Peer network.
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It is a network that usually connects fewer than ten computers. Each computer has equal capabilities and they share the same resources.
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Describe a LAN
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Local Area Network. It connects computers on one location.
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Describe a Client/Server network.
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It is a larger network that usually connects ten or more computers. Each computer is connected to a server that provides resources.
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Describe a WAN
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Wide Area Network. It connects computer on more than one location.
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Describe 3 Network topologies.
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Star - the computers directly and seperately connect to a central device. They are easy to maintian and if one computer shuts down, the rest continue to function.
Ring - the computers are connected to a cable that forms a closed loop. They are rarely used and if one computer fails, all the computers before it continue to function, but all the computers after it fail. Bus - the computers are connected to a single cable. It is an older system. All devices continue to function if one fails, but if the bus fails...they all fail. |
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Describe a Peer-to-Peer network.
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It is a network that usually connects fewer than ten computers. Each computer has equal capabilities and they share the same resources.
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Describe TCP/IP protocol.
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It stands for Transmission Control Protocol/Internet Protocol. It is a standard that determines how information is sent from one network to another. It divides information into small groups and determines the best path to send them on.
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Describe a Client/Server network.
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It is a larger network that usually connects ten or more computers. Each computer is connected to a server that provides resources.
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Describe 3 Network topologies.
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Star - the computers directly and seperately connect to a central device. They are easy to maintian and if one computer shuts down, the rest continue to function.
Ring - the computers are connected to a cable that forms a closed loop. They are rarely used and if one computer fails, all the computers before it continue to function, but all the computers after it fail. Bus - the computers are connected to a single cable. It is an older system. All devices continue to function if one fails, but if the bus fails...they all fail. |
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Describe 3 types of transmission media.
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Twisted Pair Cable - made of wires that are twisted together. It is easy to maintain and affordable.
Coaxial Cable - It is made from one wire that is insulated by three layers. It is an older type and more expensive. Fiber-Optic Cable - It is made from hundreds of glass strands that use light to transmit information. It is the most expensive, but it is the best. |
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Describe TCP/IP protocol.
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It stands for Transmission Control Protocol/Internet Protocol. It is a standard that determines how information is sent from one network to another. It divides information into small groups and determines the best path to send them on.
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Describe 3 types of transmission media.
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Twisted Pair Cable - made of wires that are twisted together. It is easy to maintain and affordable.
Coaxial Cable - It is made from one wire that is insulated by three layers. It is an older type and more expensive. Fiber-Optic Cable - It is made from hundreds of glass strands that use light to transmit information. It is the most expensive, but it is the best. |
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What is input and output?
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Input - data that is entered into the computer
Output - data that the computer produces |
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RAID
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Redundant Array of Independent Disks. RAID connects small storage disks into a single unit.
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NAS
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Network Attached Storage. A device that is connected to server to provide storage.
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Recordable and Rewritable DVDs
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DVD-RW, DVD+RW, & DVD+RAM
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System Software
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Progams that maintain the operations of a computer and its devices. Divided into Operating Systems and Utility Programs.
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Spooling
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The process by which documents are sent to a buffer instead of to the printer.
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Stand-alone Operating Systems
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Complete operating system that works on a desktop computer. Windows Vista, Mac OS X, UNIX, Linux.
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Embedded Operating Systems
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Located on mobile devices and electronics. It resides on a ROM chip.
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Groupware
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Helps people to work together on projects and share information over a network.
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Network Card
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Enables computers that do not have networking capabilities to connect to a network.
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Routers
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A communications device that connects multiple computers together.
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