CompTIA A_ Certification All-In-One Exam Guide, Seventh Edition - Michael Meyers [508]
product key Code used during installation to verify legitimacy of the software.
program/programming Series of binary electronic commands sent to a CPU to get work done.
Programs and Features Windows Vista/7 replacement for the Add or Remove Programs applet.
projector Device for projecting video images from PCs or other video sources, usually for audience presentations. Available in front and rear view displays.
Prometric One of the two companies that administers the CompTIA A+ exams, along with Pearson VUE.
prompt A character or message provided by an operating system or program to indicate that it is ready to accept input.
proprietary Technology unique to a particular vendor.
protocol Agreement that governs the procedures used to exchange information between cooperating entities. Usually includes how much information is to be sent, how often it is sent, how to recover from transmission errors, and who is to receive the information.
proxy server Device that fetches Internet resources for a client without exposing that client directly to the Internet. Usually accept requests for HTTP, FTP, POP3, and SMTP resources. Often caches, or stores, a copy of the requested resource for later use. Common security feature in the corporate world.
public folder Folder that all users can access and share with all other users on the system or network.
queue Area where objects wait their turn to be processed. Example: the printer queue, where print jobs wait until it is their turn to be printed.
Quick Launch toolbar Enables you to launch commonly used programs with a single click.
QVGA Video display mode of 320 × 240.
RAID (redundant array of inexpensive devices) Six-level (0–5) way of creating a fault-tolerant storage system:
Level 0 Uses byte-level striping and provides no fault tolerance.
Level 1 Uses mirroring or duplexing.
Level 2 Uses bit-level striping.
Level 3 Stores error-correcting information (such as parity) on a separate disk, and uses data striping on the remaining drives.
Level 4 Level 3 with block-level striping.
Level 5 Uses block-level and parity data striping.
RAID-5 volume Striped set with parity. (See also RAID).
rails Separate DC paths within an ATX power supply.
RAM (random access memory) Memory that can be accessed at random; that is, which you can write to or read from without touching the preceding address. This term is often used to mean a computer’s main memory.
RAMDAC (random access memory digital-to-analog converter) Circuitry used on video cards that support analog monitors to convert the digital video data to analog.
raster image Pattern of dots representing what the final product should look like.
raster line Horizontal pattern of lines that form an image on the monitor screen.
RD (RMDIR) Command in the command line interface used to remove directories.
RDRAM (Rambus DRAM) Patented RAM technology that uses accelerated clocks to provide very high-speed memory.
read-only attribute File attribute that does not allow a file to be altered or modified. Helpful when protecting system files that should not be edited.
rear-view projector Projector that shoots an image onto a screen from the rear. Rearview projectors are usually self-enclosed and very popular for TVs, but are virtually unheard of in the PC world.
Recovery Console Command-line interface boot mode for Windows that is used to repair a Windows 2000 or Windows XP system suffering from massive OS corruption or other problems.
Recycle Bin When files are deleted from a modern Windows system, they are moved to the Recycle Bin. To permanently remove files from a system, they must be emptied from the Recycle Bin.
REGEDIT.EXE Program used to edit the Windows Registry.
register Storage area inside the CPU used by the onboard logic to perform calculations.