CompTIA A+® Certification Study Guide

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CompTIA A+® Certification Study Guide 32-bit - - ✔✔In reference to the Windows operating systems, one that can utilize up to 4 GB of address space. 64-bit - - ✔✔In reference to the Windows... operating systems, one that can utilize more than 4 GB of address space. Depending on the version, 64-bit Windows can address a maximum of from 8 to 192 GB. 802.11a - - ✔✔A wireless network standard that uses the 5 GHz band. 802.11b - - ✔✔A wireless network standard that uses the 2.4 GHz band at a speed of up to 10 Mbps. 802.11g - - ✔✔A wireless network standard that uses the 2.4 GHz band at a speed of up to 54 Mbps. It is downward-compatible with 802.11b. 802.11n - - ✔✔A wireless network standard that defines speeds of up to 600 Mbps. It is downward-compatible with 802.11a, 802.11b, and 802.11g. 8-bit high color - - ✔✔Describes the VGA mode color setting that, although it can produce around 16 million different colors, can only display up to 256 different colors at a time. AC adapter - - ✔✔A type of power supply that converts AC power to voltages needed for a device. AC adapters are generally used for portable PC systems and other devices. accelerated graphics port - - ✔✔A local bus designed for video only, it provides a direct link between the processor and the video card, giving the video card direct access to main memory. access control - - ✔✔Managing access to resources. _______ to computers and network resources involves authentication and authorization. access control entry - - ✔✔In an access control list, a record containing just one user or group account name and the permissions assigned to that account. access control list - - ✔✔A table on each file and folder in the NTFS file system that contains one or more access control entries. accessory bay - - ✔✔In a laptop, a compartment that holds a single media device that is switchable with another.ACT - - ✔✔The "activity" status light on a NIC that indicates data is being transmitted. activation - - ✔✔A method used by several software manufacturers to combat software piracy. active communication - - ✔✔A set of behaviors including active listening and active speaking that shows you are fully engaged in the conversation and encourages the other person to also communicate in a positive manner. active listening - - ✔✔A set of skills, behaviors, and attitudes to use when listening to another person. active matrix display - - ✔✔An LCD technology based on thin-film transistor (TFT) technology. It has a transistor at every pixel, which enables much quicker display changes active partition - - ✔✔A primary partition that is marked for use by the system during startup. Windows operating systems can only be booted from this active speaking - - ✔✔The appropriate responses that you make during a conversation. ad hoc mode - - ✔✔In a Wi-Fi network, the networking mode that allows peer-to-peer communications without the use of a centralized wireless hub, called a wireless access point (WAP). adapter card - - ✔✔A printed circuit card that you add to the motherboard to enhance functionality. Also called an expansion card. Video adapters and network interface cards (NICs) are examples of this address bus - - ✔✔A group of wires used to identify addresses in main system memory in a computer. The number of wires in an address bus is called the width of the bus and determines the number of unique memory locations that can be addressed using binary math with the two raised to the power of the number of wires in the bus. A 32-bit bus can address up to 4 GB of memory, whereas a 36-bit address bus can address up to 64 GB of memory. [Show More]

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