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A study guide for the CompTIA A+® Certification exam. It includes definitions and explanations of various technical terms related to computer hardware, software, and networking. The guide covers topics such as operating systems, power supplies, access control, and more. organized in a question-and-answer format, making it easy to study and review for the exam.
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32-bit - correct answer ✅In reference to the Windows operating systems, one that can utilize up to 4 GB of address space. 64-bit - correct answer ✅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 - correct answer ✅A wireless network standard that uses the 5 GHz band. 802.11b - correct answer ✅A wireless network standard that uses the 2.4 GHz band at a speed of up to 10 Mbps. 802.11g - correct answer ✅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 - correct answer ✅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 - correct answer ✅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 - correct answer ✅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 - correct answer ✅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 - correct answer ✅Managing access to resources. _______ to computers and network resources involves authentication and authorization. access control entry - correct answer ✅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 - correct answer ✅A table on each file and folder in the NTFS file system that contains one or more access control entries.
active partition - correct answer ✅A primary partition that is marked for use by the system during startup. Windows operating systems can only be booted from this active speaking - correct answer ✅The appropriate responses that you make during a conversation. ad hoc mode - correct answer ✅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 - correct answer ✅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 - correct answer ✅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. Address Resolution Protocol - correct answer ✅A protocol used to resolve an IP address to a MAC address. Advanced Communications Riser - correct answer ✅A riser card standard that AMD, 3Com, and others introduced in 2000 to supersede AMR. It uses one PCI slot, provides accelerated audio and modem functions as well as networking, and supports multiple Ethernet NICs. Advanced Configuration and Power Interface - correct answer ✅A power management standard that includes all the power states of APM, plus two more. It also supports soft power. Advanced Micro Devices - correct answer ✅AMD manufactures CPUs and other products, and its chief rival is Intel Corporation. Advanced Power Management - correct answer ✅A power management standard, introduced by Intel in 1992, that defines four power-usage operating levels.
amperes (amps) - correct answer ✅A measurement of the volume of electrons, also called current. It is calculated with the formula amps = watts / volts. analog LCD display - correct answer ✅An LCD display that uses a DB-15 connector, which means that it accepts analog signals that it converts to digital. analog modem - correct answer ✅A modulator/demodulator device that allows computers to communicate with one another over existing phone lines. answer file - correct answer ✅A file used during an unattended installation of Windows. It provides a script of responses to the questions Setup asks so the user does not have to answer them manually. antistatic mat - correct answer ✅A mat that provides a path to ground for a static charge and is designed for the desktop or floor of a workspace. One placed on the workbench reduces the risk of electrostatic discharge for components placed on it, while one placed on the floor provides the same protection for anyone standing on the mat.
antistatic wrist strap - correct answer ✅A strap designed to discharge static electricity from your body. One end attaches to the wrist, whereas the other end attaches to a grounded object. archive attribute - correct answer ✅A file attribute set by the OS when a file is created or modified. Backup software often removes this attribute when backing up a file in order to mark it as a backed-up file. arithmetic logic unit - correct answer ✅A component of a CPU that is responsible for all logical and mathematical operations in the system. aspect ratio - correct answer ✅The proportion between an image's width and height. Traditional CRT monitors have an aspect ratio of 4:3. Widescreen displays have an aspect ratio of 16:9. asymmetrical digital subscriber line - correct answer ✅A type of DSL service in which the download speed is higher than the upload speed. asynchronous transfer mode - correct answer ✅A type of switched network used by phone companies.
Audit Policy - correct answer ✅In Windows, one or more settings found in the Local Security Settings console. authentication - correct answer ✅A validation of a user account and password that occurs before the security components of Windows will give the user access to the computer. authentication factor - correct answer ✅Things used for authentication, such as something you know, something you have, or something you are. Authentication involves one or more of these factors and can, therefore, be one-factor, two- factor, or three-factor authentication. authorization - correct answer ✅The process that authenticates a user and verifies the user account's level of access to a resource. ASR - correct answer ✅An option available in the Windows XP Backup program for recovering from damage that prevents the operating system from starting. It replaced the Emergency Repair Disk (ERD) process in Windows 2000.
Automated System Recovery - correct answer ✅In Windows XP, this replaces the Emergency Repair process of Windows NT and Windows 2000. It is available from the Windows Backup program (NTBACKUP.EXE). Automatic Private IP Address - correct answer ✅An address that a DHCP client will assign to itself after requesting an address and failing to receive one from a DHCP server. The address it will assign is in the 169.254 /16 network, which is the range of addresses from 169.254.0.1 to 169.254.255.254. auto-switching power supply - correct answer ✅A power supply that detects the incoming voltage and switches to accept either 120 or 240 VAC. back door - correct answer ✅Program code that provides a way for someone to gain access to a computer while bypassing security. Only a person who knows how it works can use it, but once in, that individual has the same access as the host program to all the internal operating system code. background process - correct answer ✅A process that runs "behind the scenes" with a low priority, does not require input, and rarely creates output.
Basic Service Set - correct answer ✅The wireless nodes (including the WAP) communicating together in infrastructure mode. basic storage - correct answer ✅A storage type in Windows that uses the partition table in the master boot record (MBR) to define disk partitions. BDD Workbench - correct answer ✅A tool used to create and manage a distribution share and various installation images. beam-on-blade connector - correct answer ✅The type of connector used in the ExpressCard interface. bidirectional mode - correct answer ✅A parallel port mode in which the signals can be transmitted in both directions between the PC and parallel devices connected to the computer. biometric - correct answer ✅A measurement of a body part, such as a fingerprint or retina scan.
biometric device - correct answer ✅A device that uses a measurement of a body part, such as a fingerprint or retina scan. biometric logon - correct answer ✅The use of a biometric for authentication. BIOS settings - correct answer ✅The BIOS configuration settings, also called system settings, accessed via a special BIOS-based menu during system startup. bit width - correct answer ✅In reference to a memory module, how much information the processor can access from or write to memory in a single cycle. BitLocker drive encryption - correct answer ✅An encryption technology introduced in Windows Vista Enterprise and Ultimate editions, Windows Server 2008, and also in Windows 7 Ultimate and Enterprise editions. It encrypts the entire boot volume. bluesnarfing - correct answer ✅The act of covertly obtaining information broadcast from wireless devices using the Bluetooth standard.
broadband WAN - correct answer ✅A wide area network (WAN) connection that allows a large amount of data to be transmitted. Broadband WANs includes cellular, ISDN, DSL, cable, T-carrier, satellite, and fiber. Bubble Jet - correct answer ✅A popular inkjet printer developed by Canon. bus - correct answer ✅In a computer, pathways that power, data, and control signals travel from one component to another within the system. C - correct answer ✅Used to represent the chrominance signal in S-Video. cable select - correct answer ✅An EIDE drive setting that has the system select the drive's role (master or slave) based on the drive's position on the cable. If the drive is on the end of the cable, it is the master drive, and if it is in the middle of the cable, it is the slave drive. cable tester - correct answer ✅A tool for testing if a cable can connect properly end-to-end and to determine if a cable has a short. These tools are available for a variety of cable types.
cache controller - correct answer ✅A CPU component that manages the CPU cache. capacity - correct answer ✅In power supplies, the amount of wattage the power supply can handle. capture card - correct answer ✅A category of adapter card that accepts and records video signals to a PC's hard drive. card services - correct answer ✅A service on a laptop that configures a card after socket services has recognized it. CardBus - correct answer ✅The PCMCIA standard that succeeds the PC Card. case - correct answer ✅The box that houses the main computer system. case fan - correct answer ✅A cooling fan mounted directly on the case, as opposed to a power supply fan, which is inside the power supply.
Centronics - correct answer ✅A 36-pin connector mounted to a device's parallel interface. channel service unit - correct answer ✅A device required at both ends of a T- carrier system connection. charging - correct answer ✅In the laser printing process, the stage in which the printer's high-voltage power supply (HVPS) conducts electricity to the primary corona wire so it can pass the voltage on to the printer's electro-photosensitive drum. chipset - correct answer ✅One or more chips designed to work closely with the CPU. Two parts of this chipset are the Northbridge and the Southbridge. chrominance - correct answer ✅The signal in a television transmission that contains the color of the image. cleaning - correct answer ✅In the laser printing process, the stage in which the image is removed from the photosensitive drum so it can accept the next image.
cleaning blade - correct answer ✅In the laser printing process, a blade that removes residual toner from the drum. client/server-based network - correct answer ✅A network in which dedicated computers called servers store data and provide print services or other capabilities to computers running the appropriate client service or services. clock speed - correct answer ✅In a CPU, the speed at which it can potentially execute instructions, measured in millions of cycles per second—megahertz (MHz) —or billions of cycles per second—gigahertz (GHz). cluster - correct answer ✅The minimum disk space that a file can use, allocated in the file system. CMOS settings - correct answer ✅A misnomer, referring to the BIOS settings that are stored in a CMOS chip.