WGU C393 IT FOUNDATIONS STUDY GUIDE
frontside bus - Answers - Signal pathway for communication between CPU and memory
backside bus - Answers - Signal pathway between CPU and L2 or L3 cache
frontside bus - Answers - Where cache is placed if no backside bus exists
ATX - Answers - Largest motherboard form factor, puts the processor and memory in
line with the fan output of the power supply, allowing the processor to run cooler
micro ATX - Answers - Follows the ATX principle of component placement for enhanced
cooling but with a smaller footprint, fits into ATX cases
ITX - Answers - Family of small motherboard form factors with mini-, nano-, pico-, and
mobile- categories.
Southbridge - Answers - This is in charge of anything other than CPU, memory and
cache, and PCIe
SODIMM and MicroDIMM - Answers - Form factors for laptop memory
L1 cache - Answers - Term for cache memory built into the processor
L2 cache - Answers - Term for cache memory external to the processor, possibly
physically close by
L3 cache - Answers - Term for cache memory on the motherboard, when the processor
already has external cache
buffered or registered memory modules - Answers - These memory modules include
specialized chips that act as buffers for all signals from the memory controller, except, in
some cases, the data signals
Load-reduced DIMMs - Answers - A form of registered DIMMs that increase
performance by maintaining parallel communication
onboard - Answers - Term for connectors included on the motherboard
off board - Answers - Term for connectors not on the motherboard, but residing on
adapter cards
drive interface - Answers - Name for the connector on the motherboard or adapter card
that connects via cable to the hard drive
, 3m - Answers - Max cable length of USB 1
5m - Answers - Max cable length of USB 2
3m - Answers - Max cable length of USB 3
(hub count * max cable length) + max cable length - Answers - Formula for calculating
max USB cable length with hubs
127 - Answers - Max number of USB devices per host
4.5m - Answers - Max FireWire 400 cable length
63 - Answers - Maximum number of FireWire devices per bus
72m - Answers - Maximum distance between FireWire devices
15m - Answers - Max passive HDMI cable length
30m - Answers - Max active HDMI cable length (hint: double passive HDMI length)
3m - Answers - Max passive DisplayPort cable length
33m - Answers - Max active DisplayPort cable length (11 times passive cable length)
3m - Answers - Max Thunderbolt cable length
6 - Answers - How many levels deep can a Thunderbolt daisy chain extend?
green - Answers - Mouse PS/2 port color
purple - Answers - Keyboard PS/2 port color
IEEE 1284 - Answers - Name of the standard for the parallel port
TN (Twisted nematic) - Answers - Faster, less expensive LCD manufacturing method.
Uses power to display black pixels.
IPS (In-plane switching) - Answers - LCD manufacturing method regarded as having
best color representation at all angles. Does not use power to display black pixels.
active matrix - Answers - LCD addressing technology using a transistor for each pixel.
Crisp image but requires a lot of power.
firmware - Answers - The name given to any software that is encoded in hardware,
usually on ROM, and run without extra instructions from the operating system
frontside bus - Answers - Signal pathway for communication between CPU and memory
backside bus - Answers - Signal pathway between CPU and L2 or L3 cache
frontside bus - Answers - Where cache is placed if no backside bus exists
ATX - Answers - Largest motherboard form factor, puts the processor and memory in
line with the fan output of the power supply, allowing the processor to run cooler
micro ATX - Answers - Follows the ATX principle of component placement for enhanced
cooling but with a smaller footprint, fits into ATX cases
ITX - Answers - Family of small motherboard form factors with mini-, nano-, pico-, and
mobile- categories.
Southbridge - Answers - This is in charge of anything other than CPU, memory and
cache, and PCIe
SODIMM and MicroDIMM - Answers - Form factors for laptop memory
L1 cache - Answers - Term for cache memory built into the processor
L2 cache - Answers - Term for cache memory external to the processor, possibly
physically close by
L3 cache - Answers - Term for cache memory on the motherboard, when the processor
already has external cache
buffered or registered memory modules - Answers - These memory modules include
specialized chips that act as buffers for all signals from the memory controller, except, in
some cases, the data signals
Load-reduced DIMMs - Answers - A form of registered DIMMs that increase
performance by maintaining parallel communication
onboard - Answers - Term for connectors included on the motherboard
off board - Answers - Term for connectors not on the motherboard, but residing on
adapter cards
drive interface - Answers - Name for the connector on the motherboard or adapter card
that connects via cable to the hard drive
, 3m - Answers - Max cable length of USB 1
5m - Answers - Max cable length of USB 2
3m - Answers - Max cable length of USB 3
(hub count * max cable length) + max cable length - Answers - Formula for calculating
max USB cable length with hubs
127 - Answers - Max number of USB devices per host
4.5m - Answers - Max FireWire 400 cable length
63 - Answers - Maximum number of FireWire devices per bus
72m - Answers - Maximum distance between FireWire devices
15m - Answers - Max passive HDMI cable length
30m - Answers - Max active HDMI cable length (hint: double passive HDMI length)
3m - Answers - Max passive DisplayPort cable length
33m - Answers - Max active DisplayPort cable length (11 times passive cable length)
3m - Answers - Max Thunderbolt cable length
6 - Answers - How many levels deep can a Thunderbolt daisy chain extend?
green - Answers - Mouse PS/2 port color
purple - Answers - Keyboard PS/2 port color
IEEE 1284 - Answers - Name of the standard for the parallel port
TN (Twisted nematic) - Answers - Faster, less expensive LCD manufacturing method.
Uses power to display black pixels.
IPS (In-plane switching) - Answers - LCD manufacturing method regarded as having
best color representation at all angles. Does not use power to display black pixels.
active matrix - Answers - LCD addressing technology using a transistor for each pixel.
Crisp image but requires a lot of power.
firmware - Answers - The name given to any software that is encoded in hardware,
usually on ROM, and run without extra instructions from the operating system
