A heat sink is an electronic device that incorporates either a fan or a peltier device to keep a hot component such as a processor cool.
Posts Categorized: CompTIA A+
A hardware device that keeps the overall computer or a computer device cool by circulating air to or from the computer or component. The picture is an example of a fan on a heat sink.
A chipset is a group of microchips that are designed to work with one or more related functions that were first introduced in 1986 when Chips and Technologies introduced the 82C206.
The BIOS and CMOS are often times thought to be the same thing, but they are not.
Southbridge The southbridge is an IC on the motherboard responsible for the hard drivecontroller, I/O controller and integrated hardware. Integrated hardware can include the sound card and video card if on the motherboard, USB, PCI, ISA, IDE, BIOS, andEthernet.
Short for super input/output or Super I/O, SIO is anintegrated circuit on a computer motherboard that handles the slower and less prominent input/output devices shown below.
Less commonly referred to as the Centronics interface or Centronics connectorafter the company that originally designed it, the port was later developed by Epson.
Originally known as the Analog-to-Digital port (A-to-D port), the as a game port, joystick port, or game control adapter is a 15-pin connector port first found onIBM computers in 1981.
If your computer is losing its time or date settings, or you are receiving a messageCMOS Read Error, CMOS Checksum Error, or CMOS Battery Failure, the CMOS battery needs to be replaced. To do this, follow the steps below.
Alternatively referred to as a Real-Time Clock (RTC), Non-Volatile RAM (NVRAM) or CMOS RAM, CMOS is short for Complementary Metal-Oxide Semiconductor.
There are many types of expansion cards that can be installed in a computer, including sound, video, modem, network, interface card, and a number of others. In many cases, these expansion cards will fit in a slot in the computer called a PCI slot.
Alternatively referred to as a bus slot or expansion port, an expansion slot is connection or port located inside a computer on the motherboard or riser board that allows a computer hardware expansion card to be connected.
Power Supplies Okay, now that we’ve tested our AC outlet and put some protective power devices into play, let’s go ahead and talk power supplies.
You may not typically handle the insides of your computers, but if your business requires knowledge of Central Processing Units (CPU), then you’ll also need to learn about CPU sockets
Computer port In computer hardware, a port serves as an interface between the computer and other computers or peripheral devices.
What does a hard drive do? Storage is the hard drive’s responsibility. Everything you keep on your computer is on a hard drive.
What Is Memory, or RAM? System memory, frequently called main memory or RAM (Random Access Memory), is a type of computer memory that can be accessed randomly.
Definition – What does Malicious Software (Malware) mean? Malicious software, commonly known as malware, is any software that brings harm to a computer system. Malware can be in the form of worms, viruses, trojans, spyware, adware and rootkits, etc., which steal protected data, delete documents or add software not approved by a user.
Wireless encryption protocols include:
Common networking command-line tools include the following:
Bluetooth is a short-range technology aimed at simplifying communications and synchronization among network devices. Bluetooth is divided into three classes:
Wireless Ethernet Versions: (Name – Data Transfer Rate – Frequency)
Cabling Standards include:
Networking Protocols include: FTP – File Transfer Protocol : Port 21
Exam Cram: LAN = Local Area Network WAN = Wide Area Network MAN = Metropolitan (or Municipal) Area Network PAN = Personal Area Network
[bs_icon name=”glyphicon glyphicon-chevron-right”] Custom PCs include: Audio/Video workstations – needs special A/V cards, fast hard drives and multiple monitors
#1 DON’T CRAM #2 DO PLAN #3 TAKE A BREAK #4 MIX IT UP #5 PICK YOUR TOPICS #6 FIND PRACTICE TESTS #7 USE TEST PREP MATERIALS
Wireless encryption protocols include :
Switches connect computers together in a LAN.
ATX 12V 2.x Power Supplies connect to the motherboard by way of 24-pin cable + 4-pin for CPU and 6 or 8-pin for video. Advantages of the ATX motherboard The ATX motherboard includes advanced control facilities, where the BIOS program continually checks the CPU temperature and voltages, the cooling fans RPM, etc. If… Read more »
IPv4 addresses are 32 bit dotted-decimal numbers (like 192.168.1.1) and can be statically (manually) inputed or dynamically (automatically) assigned by DHCP.
CompTIA 6-Step Troubleshooting Process:
Short for Universal Serial Bus, USB (pronounced yoo-es-bee) is a plug-and-play interface that allows a computer to communicate with peripheral and other devices.
Authentication : The verification of a person’s identity – Helps protect against unauthorized access.
Optical disc drives use removable media to store and retrieve data, typically 5.25”.
No network connectivity?
Hard Disk Drives are nonvolatile (meaning they don’t lose data when power off) devices that store data, generally 3.5”. Types of HDD include:
RAID stands for Redundant Array of Inexpensive Disks. RAID 0 is striping, RAID 1 is mirroring , RAID 5 is striping with parity, RAID 10 is mirrored sets in a striped set. [bs_icon name=”glyphicon glyphicon-arrow-right”] RAID 0 is not fault-tolerant. If RAID 1 uses two disk controllers, it is disk duplexing. … Read more »
Sound cards connect as x1 PCIe or PCI cards and normally have PC 99 color-coded 1/8” mini-jacks for I/O and speakers, and optical I/Os known as S/PDIF (example: TOSLINK). Alternatively referred to as an audio output device, sound board, or audio card. A sound card is an expansion card or IC for producing sound… Read more »
Video cards connect to motherboards by way of x16 PCIe (most common, typically black), AGP (brown), or PCI (white) expansion slots.
Random Access Memory (RAM) types include SDRAM, DDR, DDR2, DDR3, RDRAM and SODIMMs.
The Central Processing Unit (CPU) or processor takes care of all calculations.
Motherboards – Connect everything together. Typical form factors include ATX (most common), microATX, ITX, and BTX.