1 MCITP Microsoft Certified IT Professional
2 CCNA Cisco Certified Network Associate
3 CompTIA Computing Technology Industry Association
4 IT Informational Technology
5 %SystemRoot% The path where the operating system is installed
6 10BaseT Ethernet LAN designed to run on twisted pair cabling. 10BaseT runs at 10 megabits/second. The maxium lenght for the cabling between the NIC and the switch (or hub, repeater,etc) is 100 meters. It uses baseband signaling. No industy standard spelling exists, so sometimes it’s written 10BASE-T or 10Base-T
7 A/V sync Process of synchronizing audio and video
8 AC (alternating current) Type of electricity in which the flow of electrons alternates direction, back and forth, in a curcuit.
9 AC’97 Sound card standard for lower-end audio devices; created when most folks listened to stereo sound at best
10 access control Security concept using physical security, authenticationm, users and groups, and security policies
11 ACPI (Advanced Configuration and Power Interface) Power management specification that far surpasses its predecessor, APM, by providing support for hot-swappable devices and better control of power modes.
12 Action Center A one-page aggregration of event messages, warnings, and maintenance messages in Windows 7
13 activation Process of confirming that an installed copy of a Microsoft product (most commonly Windows or a Microsoft Office application) is legitimate. Usually done at the end of software installations.
14 active matrix Type of liquid crystal display (LCD) that replaced the passive matrix technology used in most portable computer displays. Also called TFT (thin film transistor).
15 active partition On a hard drive, primary partition that contains an operating system.
16 active PFC (power factor correction) Circuitry built into PC power supplies to reduce harmonics
17 activity light An LED light on a NIC, hub, or switch that blinks rapidly to show data transfers over the network.
18 ad hoc mode Decentralized wireless network mode, otherwise known as peer-to-peer mode, where each wireless node is in meshed contact with every other node.
19 Add or Remove Programs Applet allowing users to manually add or remove a program to or from the system.
20 address bus Set of wires leading from the CPU to the memory controller chip (traditionally the North bridge) that enables the CPU to address RAM. Also used by the CPU for I/O addressing. On current CPUs with built-in memory controllers, the address bus refers to the internal electronic channel from the microprocessor to RAM, along which the adresses of memory storage locations are transmitted. Like a post office box, each memory location has a distint numb…
21 address space Total amount of memory addresses that an address bus can contain
22 administrative shares Administrator tool to give local admins access to hard drives and system root folders
23 Administrator Tools Group of Control Panel applets, including Computer Management, Event Viewer, and Reliability and Performance Monitor
24 administrator group List of members with complete administrator priviledges
25 administrator account User account, created when the OS is first installed, that is allowed complete, unfettered access to the system without restriction.
26 ADSL (asymmetric digital subscriber line) Fully digital, dedicated connection to the telephone systen that provides average download speeds of 7 Mbps and upload speeds of 512 Kbps.
27 Active Power factor correction (active PFC) Extra circuitry that smoothes out the way the power supply takes power from the electric company and eliminates harmonics
28 (AC) Alternating Current The flow of electrons alternates direction back and forth in a circuit.
29 (DC) Direct Current Electrons flow in one direction around a continuous circuit
30 Field replaceable Unit (FRU) Refers to the typical parts a tech should carry, such as RAM and a hard drive
31 IEC-320 The power supply connects to the power cord (and thus to an electrical outlet) via a standard IEC-320 connector
32 Joule Is a unit of electrical energy
33 Mini Connector 2nd type of connector all power supplies have one.
34 Molex Connector Most common type of power connection for device that need 5 or 12V of power
35 Multimeter Often also referred to as a volt-ohm meter (VOM) or digital multimeter (DMM)
36 Ohms Resistance to the flow of electrons is measured in ohms
37 PI power connector Modern motherboards use a 20- or 24- pin
38 Power conditioning All better surge suppressors add power conditioning to filter out EMI and RFI
39 Power supply fan Provides the basic cooling for the PC
40 Rails Are in every power supply
41 Resistance Wires have a resistance to the flow of electrons.
42 SATA Power Connectors Drives need a special 15 pin SATA connector
43 Slot Covers Covers all empty expansion bays
44 Soft Power The BIOS or operating system take over and hands the chore of turning the PC on or off.
45 Surge Supressors A device that absorbs the extra voltage from a surge to protect the PC
46 Uninterruptible Power Supply (UPS) Protects your computer in the event of a power sag or power outage
47 Volts (V) Pressure of the electrons in the wires is called voltage and is measureable in units called volts
48 Wattage (W) The amount of amps and volts needed so that a particular device will function is expressed as how much wattage (watts or W) that device needds