Computer Hardware Components Study Guide, Exams of Computer Science

Download Computer Hardware Components Study Guide and more Exams Computer Science in PDF only on Docsity! CompTIA A+ 220-1001 best Study Guide. PCI Express (PCIe) - ANS -released by Intel in 2004 -uses point-to-point serial communications (each component can have a dedicated link to any other component) -can supply up to 75W to a device via the motherboard slot -features power management functions & support for hot-swappable & hot pluggable adapters Peripheral Component Interconnect (PCI) bus - ANS -was introduced in 1994 with the Pentium processor -supports up to 5 devices & allocates system resources by using Plug-&-Play -bandwidth shared between all devices -supports bus mastering without requiring the CPU -32-bit wide parallel bus working at 33.3 MHz -rate up to 133 MBps Keyboard-Video-Mouse (KVM) Switch - ANS Allows multiple computers (typically servers) to be controlled via a single keyboard, mouse, & monitor. Keyboard - ANS The longest serving type of input device (or HIDs). Human Interface Devices (HIDs) - ANS Peripherals that enable the user to enter data & select commands. AKA input devices Network Interface Cards (NIC) - ANS This card is installed if there is not already a network adapter installed as part of the motherboard chipset or if you need to upgrade an adapter to use a different type of network, bandwidth, or cabling. Expansion cards - ANS AKA add-on cards can be installed on the motherboard to add functions or ports not provided as part of the chipset RJ-11 Connector - ANS -connector used with 2- or 3-pair UTP or with flat ribbon "silver satin" phone cables (1 pair carries the dial tone & voice circuit and the other pair is usually unused but can be deployed for a second unit) -used for telephone systems -6P2C - 6 position/2 contacts RJ-45 (Registered Jack) Connector - ANS -used with twisted pair cable for Ethernet local area networking products. -also referred to as 8P8C(8 position/8 contact) meaning that all 8 "potential" wire positions are supplied with contacts so they can carry signals if needed Twisted-pair cable - ANS A type of copper cabling where pairs of insulated conductors minimize electrical interference. Molex Connectors - ANS For older devices, the computer power supply comes from this type of connector. It is usually white and has 4 pins plus red, yellow, and black wires. Small Computer Systems Interface (SCSI) - ANS Internal PC storage devices often use Parallel ATA (PATA)/Enhanced Integrated Drive Electronics(EIDE) connections that support transfer rates up to about 133 MBps. Workstations and servers requiring MORE speed would use this bus instead. It could support up to 320 MBps data rates. Serial Advanced Technology Attachment (SATA) - ANS The standard means of attaching internal storage drives to a desktop PC. Each of these host adapter ports supports a single device. Communications (COM) Port - ANS The name for a serial port in Windows. Serial Ports / RS-232 - ANS So called because data is transmitted over one wire one bit at a a time. Start, stop, and parity bits are used to format and verify data transmission. -It is less a sophisticated signaling method vs. USB -Supports data rates up to 115 Kbps only Lightning - ANS Reversible connector used with Apple's iPhone and iPad mobile devices. Thunderbold (TB) - ANS -Peripheral interface that was developed by Intel and is primarily used on Apple workstations & laptops. -Can be used as a display interface (like DisplayPort or HDMI) and a general peripheral interface (like USB). USB 2.0 Type B Micro (5-pin) - ANS -Updated connector for smaller devices such as smartphones or tablets -Distinctly flatter than the older mini type connector USB 2.0 Type B Mini (5-pin) - ANS -Smaller connector for connection to a device -Seen on early digital cameras but no longer widely used USB 2.0 Type B (4-pin) - ANS -For connection to a device -Connector & port are square with beveled top USB 2.0 Type A (4-pin) - ANS -For connection to the host -Connector & port shaped like flat rectangles