ACRONYMS

Question 1

CPU

Answer 1

Central Processing Unit

• Controls I/O functions
• SQUARE
• main chip on motherboard
• process simple instructions quickly
• performs software instructions and mathematical calculations

Question 2

AC

Answer 2

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

Question 3

DC

Answer 3

Direct Current

-Charge flows in one direction from the positive to negative terminals of the power source at a constant voltage

Question 4

VGA

Answer 4

Video Graphics Array

• 15-pin connector
• standard analog video interface
• older

Question 5

DVI

Answer 5

Digital Visual Interface

• older version of DisplayPort/HDMI
• supports video computer/projector

Question 6

DRAM

Answer 6

Dynamic Random Access Memory

Question 7

ECC

Answer 7

Error Correcting Code

- RAM w/ built in error correction security.

Question 8

eSATA

Answer 8

External Serial Advanced Technology Attachment

Variant of SATA cabling designed for external connectivity.

Question 9

ESD

Answer 9

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.

Question 10

DIMM

Answer 10

Dual Inline Memory Module

• system RAM
• removable and replaceable

Question 11

DVI-I

Answer 11

Digital Visual Interface

• supports both analog and digital equipment and outputs
• single link: 3.7 Gbps
• dual link: 7.4 Gbps

Question 12

DVI-D

Answer 12

Digital Visual Interface- Digital

• cable that supports digital only
• single link: 3.7 Gbps
• dual link: 7.4 Gbps

Question 13

SATA

Answer 13

Serial Advanced Technology Attachment

• data connector (7-pins)
• power connecter (15-pins)
• hard drive cable (7-shape)
• Molex power connector

Question 14

DVI-A

Answer 14

Digital Visual Interface- Analog

-supports analog output only

Question 15

HDMI

Answer 15

High Definition Multimedia Interface

Question 16

GUI

Answer 16

Graphical User Interface

Question 17

GUID

Answer 17

Globally Unique Identifier

Question 18

USB

Answer 18

Universal Serial Bus

Question 19

DB-9

Answer 19

Serial Communications: D-shell Connector

9-pins

Question 20

DB-25

Answer 20

Serial Communications: D-shell Connector

25-pins

Question 21

RAM

Answer 21

Random Access Memory

• Main Storage for programs and data when computer is running
• Holding spot for instructions
• Volatile

Question 22

VPN

Answer 22

Virtual Private Network

-connects two private networks over a public network (the Internet).

Question 23

VLAN

Answer 23

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

Question 24

WLAN

Answer 24

Wireless Local Area Network
Wi-Fi (IEEE 802.11)
AKA: Wi-Fi

Question 25

LAN

Answer 25

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

Question 26

WAN

Answer 26

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

Question 27

ISP

Answer 27

Internet Service Provider

example: Comporium

Question 28

MAN

Answer 28

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

Question 29

AAA

Answer 29

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

Question 30

MDM

Answer 30

Mobile Device Management

• software used to control device features
• remote device reset/data wipe
• authentication policies

Question 31

EOL

Answer 31

End Of Life
-older system
Product life cycle phase where mainstream vendor support is no longer available.

Question 32

NCF

Answer 32

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.

Question 33

SCSI

Answer 33

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

Question 34

KVM

Answer 34

Keyboard, Video, Mouse

-allows you to toggle between VMs