ACRONYMS Flashcards
CPU
Central Processing Unit
- Controls I/O functions
- SQUARE
- main chip on motherboard
- process simple instructions quickly
- performs software instructions and mathematical calculations
AC
Alternating Current
-US: 110-120 V
UK: 220-240V
Cheap way to distribute electrical power over long distances.
Not used in PC. Rectifier is used to convert AC to DC
Household current flows in both directions around the circuit and voltage alternates between low and high voltages
DC
Direct Current
-Charge flows in one direction from the positive to negative terminals of the power source at a constant voltage
VGA
Video Graphics Array
- 15-pin connector
- standard analog video interface
- older
DVI
Digital Visual Interface
- older version of DisplayPort/HDMI
- supports video computer/projector
DRAM
Dynamic Random Access Memory
ECC
Error Correcting Code
- RAM w/ built in error correction security.
eSATA
External Serial Advanced Technology Attachment
Variant of SATA cabling designed for external connectivity.
ESD
Electrostatic Discharge
Metal and plastic surfaces can allow a charge to build up. This can discharge if a potential difference is formed between
the charged object and an oppositely charged conductive object. This electrical discharge can damage silicon
chips and computer components if they are exposed to it.
DIMM
Dual Inline Memory Module
- system RAM
- removable and replaceable
DVI-I
Digital Visual Interface
- supports both analog and digital equipment and outputs
- single link: 3.7 Gbps
- dual link: 7.4 Gbps
DVI-D
Digital Visual Interface- Digital
- cable that supports digital only
- single link: 3.7 Gbps
- dual link: 7.4 Gbps
SATA
Serial Advanced Technology Attachment
- data connector (7-pins)
- power connecter (15-pins)
- hard drive cable (7-shape)
- Molex power connector
DVI-A
Digital Visual Interface- Analog
-supports analog output only
HDMI
High Definition Multimedia Interface
GUI
Graphical User Interface
GUID
Globally Unique Identifier
USB
Universal Serial Bus
DB-9
Serial Communications: D-shell Connector
9-pins
DB-25
Serial Communications: D-shell Connector
25-pins
RAM
Random Access Memory
- Main Storage for programs and data when computer is running
- Holding spot for instructions
- Volatile
VPN
Virtual Private Network
-connects two private networks over a public network (the Internet).
VLAN
Virtual LAN
- communicate through routers
- provides filtering and monitoring to improve security
- Separates traffic insides it’s Local Area Network
- Separated by different IP Addresses
WLAN
Wireless Local Area Network
Wi-Fi (IEEE 802.11)
AKA: Wi-Fi
LAN
Local Area Network
- Ethernet (IEEE 802.3)
- a self-contained network that spans a small area, such as a single building, floor or room.
- all nodes or hosts participating in the network are directly connected w/ cables or short-range wireless media
- Typically a single site or possibly several sites in a close proximity connected by high-speed backbones
WAN
Wide Area Network
- connects multiple geographic locations.
- Typically connects multiple LANs using long-range transmission media
- Use of intermediate public or service provider networks (ISP: Internet Service Provider
ISP
Internet Service Provider
example: Comporium
MAN
Metropolitan Area Network
- equivalent to a city or other municipality where you have multiple LANs connecting w/in a city’s limits
- It could mean a company w/ multiple connected networks w/in same metro area
- Larger than a LAN, smaller than a WAN
AAA
Authentication, Authorization, Accounting
- a model for access control
- Authentication: need username and password to be able to access network resources
- Authorization: giving access to system objects based on identity
- Accounting: AKA: Auditing: keeping track of user’s activity
MDM
Mobile Device Management
- software used to control device features
- remote device reset/data wipe
- authentication policies
EOL
End Of Life
-older system
Product life cycle phase where mainstream vendor support is no longer available.
NCF
Near Field Communication
Standard for two-way radio communications over very short (around four inches) distances,
facilitating contactless payment and similar technologies. NFC is based on RFID.
SCSI
Small Computer Systems Interface
- Connects multiple hard drives together
- parallel interfaces
- SCSI cable communicates all hard drives to each other. Joins them all together. Makes 4 separate hard drives look like 1 to us.
- Male connector 68-pin
- Female port 68-pin
- Legacy Cable
KVM
Keyboard, Video, Mouse
-allows you to toggle between VMs
