A+ IT Essentials Flashcards
Why is it important to ground both computers and network devices?
to provide a path of least resistance for stray current
The customer is looking for a device to help a person with accessibility issues input instructions into a laptop by using a pen. What device should the storecrecommend?
stylus
Customer is looking for a device to provide secure access to the central server room using a retinal scan. What device should the store recommend?
biometric scanner
Customer is looking for a device to manually input text for a new networking textbook that the customer is writing. What device should the store recommend ?
keyboard
Customer looking for a device to allow secure access to the main doors of the company by swiping an ID card. What device should the store recommend?
magstripe reader
Customer is looking for a device to allow users to tap and pay for their purchases. What device should the store recommend?
NFC device
Customer looking for device to display a promotional presentation to a large audience at a conference. What device should the store recommend?
projector
Customer is looking for a device to scan some old family photos into a laptop. What device should the store recommend?
flatbed scanner
Customer is looking for a device to train pilots how to land and take off in a computer simulation environment. What device should store recommend?
joystick or gamepad
Describe DDR3 SDRAM
chips that run at clock speeds of 800 MHz and have a connector with 240 pins
Describe ECC memory
chips that can detect multiple bit errors and correct single bit error in memory
Describe GDDR SDRAM
chips specifically designed for video graphics that are used in conjunction with a dedicated GPU
Describe ROM
a chip that cannot be erased or rewritten and is now obsolete
Describe a DIP
an individual memory chip that has dual rows of pins used to attach it to the motherboard
Describe PROM
chips that are manufactured blank and then can be programmed once by a PROM programmer
Describe SIMM
a small circuit board that hold several memory chips and has a 30- or 72-pin configuration
Describe EPROM
a chip that is nonvolatile and can be erased by exposing it to strong ultraviolet light
What component would connect to the motherboard through the use of a 24-pin connector?
power supply
Two activities that are normally controlled byt the Northbridge part of the chipset
access to the ram
access to the video card
Two components that interface with the Southbridge chipset on the motherboard
USB ports
hard drive