Ultimate CompTIA A+® Certification
STUDY GUIDE *Q&A* (100% Correct)
2025/2026 |VERIFIED|
BIOS settings
BIOS settings, also known as system settings, are accessed through a special BIOS-based menu
during the system startup process. These settings control the basic hardware configuration...
BIOS settings, also known as system settings, are accessed through a special BIOS-based menu
during the system startup process. These settings control the basic hardware configuration of a
computer.
What is bit width in relation to a memory module?
Bit width refers to how much information a processor can access from or write to memory during
a single cycle.
Explain BitLocker drive encryption and the Windows editions it was introduced with.
BitLocker drive encryption is a technology for encrypting the entire boot volume and was first
introduced in Windows Vista Enterprise and Ultimate editions, as well as Windows Server 2008, and
Windows 7 Ultimate and Enterprise editions.
Define bluesnarfing.
Bluesnarfing is the act of covertly obtaining information broadcast by Bluetooth-enabled devices.
Describe Bluetooth as a wireless communication standard.
Bluetooth is a wireless standard that uses radio waves to facilitate communication between
different devices over short distances.
Who developed the Blu-ray disc format, and what is its purpose?
The Blu-ray disc format, used for high-definition optical storage, was developed by the Blu-ray
Disc Association, which includes Sony, 20th Century Fox, Dell, and Hewlett-Packard, among other
industry leaders.
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,What is a BNC connector used for?
A BNC (Bayonet Neill–Concelman) connector is used to connect coaxial cables to computers and
other network equipment.
Explain the purpose of a boot record on a disk.
The boot record, located in the first sector of a disk partition, contains information about the
operating system and plays a key role in starting it.
What is the function of a boot sequence in BIOS settings?
The boot sequence determines the order in which the BIOS searches for devices to boot the
operating system from.
What is a bridge in networking terms?
A bridge is a network connection device that passes traffic between two networks by using the
physical (MAC) address of the destination device.
Describe what is meant by broadband WAN.
Broadband WAN refers to a wide-area network connection capable of transmitting a large volume
of data, including cellular, ISDN, DSL, cable, T-carrier, satellite, and fiber connections.
What is a Bubble Jet printer, and which company developed it?
The Bubble Jet is a popular inkjet printer model developed by Canon.
Define bus in the context of computer systems.
In a computer, a bus is a pathway that allows power, data, and control signals to travel between
different components of the system.
What does the C represent in the chrominance signal for S-Video?
The 'C' in S-Video's chrominance signal represents the color information for an image.
2
,Explain cable select as a setting for EIDE drives.
Cable select is an EIDE drive setting where the drive's position on the cable determines whether it
is a master or slave drive. The drive at the cable's end is the master, while the drive in the middle is the
slave.
What does a cable tester do?
A cable tester checks if a cable can connect properly from end-to-end and determines if there are
any shorts or connectivity issues.
What role does the cache controller play in a CPU?
The cache controller is a CPU component responsible for managing the CPU's cache memory.
Define capacity in the context of power supplies.
Capacity refers to the maximum amount of wattage a power supply unit can handle safely.
What is a capture card, and what does it do?
A capture card is an adapter card that records video signals and stores them on a PC's hard drive.
What are card services in laptops?
Card services are features on a laptop that configure an expansion card after it is recognized by
socket services.
Explain the CardBus standard.
CardBus is a PCMCIA standard that succeeded the PC Card, offering improved speed and
functionality for laptop expansion cards.
What is the case of a computer?
The case is the enclosure that houses the main components of a computer system.
What is a case fan, and how does it differ from a power supply fan?
3
, A case fan is a cooling fan mounted directly on the computer case, while a power supply fan is
located inside the power supply unit to cool its components.
What is a cathode ray tube (CRT) monitor?
A CRT monitor uses a cathode ray tube and an electron gun to project an image on the screen by
activating phosphors.
What is a CD-R drive capable of?
A CD-R drive can write data to a special CD-R disc once.
Describe a CD-ROM drive.
A CD-ROM drive can read data CDs and play audio CDs, but it cannot write data to discs.
What is the functionality of a CD-RW drive?
A CD-RW drive can write data to both CD-R and specially designed CD-RW discs, with the ability to
overwrite data on CD-RW discs.
Define cellular WAN.
Cellular WANs enable data communications over cellular telecommunications networks.
What is the role of the central processing unit (CPU) in a computer?
The CPU is the primary control device for a computer system, managing all system activities. It is
also referred to as a processor.
Explain what a Centronics connector is used for.
A Centronics connector is a 36-pin connector used in parallel interfaces for connecting devices to
a computer.
32-bit In reference to the Windows operating systems, one that can utilize up to 4 GB of address
space.
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