WGU D316 IT FOUNDATIONS EVALUATION
QUESTIONS AND ANSWERS SURE A+
✔✔what are the types of SSDs - ✔✔Single level cell (SLC) (More reliable and more
expensive)
Multi-level cell (MLC)
Triple level cell (TLC)
✔✔How does an SSD normally get installed - ✔✔as the computers only internal drive or
a boot drive.
sometimes used to install an OS and the HHD would be used for user data files
✔✔what is an mSATA - ✔✔A SATA cable often used to connect SSD to connect to a
PCs power port as an alternative.
✔✔Downsides to using SATA interface to connect an SSD - ✔✔The interface can
bottleneck SSD b/c it cant support the transfer speed of the SSD of up to 6.7GB
✔✔What bus do modern SSDs use to connect to PCs - ✔✔PCI Express (PCIe)
, ✔✔What interface do PCIe based SSDs use? - ✔✔Non volatile memory host controller
interface (NVMHCI) or NVM Express (NVMe)
✔✔True or False" M.2 SSDs taht use SATA/AHCI bus perform better than NVMe-based
M.2 SSDs? - ✔✔False
✔✔what are SSDs vulnerable to? - ✔✔Electrostatic discharge (ESD)
degradation from too many write operations
✔✔Define HDD - ✔✔A hard disk drive that store data on a metal or glass platter.
✔✔What is the performance rating scale for HHD drives - ✔✔15,00; 1000 High
performance
7,200; 5400 Average performance
✔✔what is Access time - ✔✔the delay as the read/write head locates a particular track
position
encompasses the total time for a computer to read/write required data
impacted by the sector location process (rotational latency) on the drive.
✔✔what is Seek time - ✔✔the time it takes to move from one point to the pint data
resides.
✔✔how are RAID disk connected to PCs - ✔✔from the SATA ports on the RAID
controller adapter card.
✔✔Describe RAID 0(Striping without Parity) - ✔✔Disk striping divides data into blocks
and spreads the blocks in a fixed order among all the disk in the array.
provides no redundancy. used as a non critical cache store
✔✔What does "SD" in SD card mean - ✔✔Secure Digital
✔✔What does "HC" in SDHC card mean - ✔✔Secure Digital High Capacity
✔✔What are the current speed variants in SD cards - ✔✔Ultra High Speed- up to 180
MBps
UHS-II - up to 156 MBps full duplex/312 MBps half-duplex
QUESTIONS AND ANSWERS SURE A+
✔✔what are the types of SSDs - ✔✔Single level cell (SLC) (More reliable and more
expensive)
Multi-level cell (MLC)
Triple level cell (TLC)
✔✔How does an SSD normally get installed - ✔✔as the computers only internal drive or
a boot drive.
sometimes used to install an OS and the HHD would be used for user data files
✔✔what is an mSATA - ✔✔A SATA cable often used to connect SSD to connect to a
PCs power port as an alternative.
✔✔Downsides to using SATA interface to connect an SSD - ✔✔The interface can
bottleneck SSD b/c it cant support the transfer speed of the SSD of up to 6.7GB
✔✔What bus do modern SSDs use to connect to PCs - ✔✔PCI Express (PCIe)
, ✔✔What interface do PCIe based SSDs use? - ✔✔Non volatile memory host controller
interface (NVMHCI) or NVM Express (NVMe)
✔✔True or False" M.2 SSDs taht use SATA/AHCI bus perform better than NVMe-based
M.2 SSDs? - ✔✔False
✔✔what are SSDs vulnerable to? - ✔✔Electrostatic discharge (ESD)
degradation from too many write operations
✔✔Define HDD - ✔✔A hard disk drive that store data on a metal or glass platter.
✔✔What is the performance rating scale for HHD drives - ✔✔15,00; 1000 High
performance
7,200; 5400 Average performance
✔✔what is Access time - ✔✔the delay as the read/write head locates a particular track
position
encompasses the total time for a computer to read/write required data
impacted by the sector location process (rotational latency) on the drive.
✔✔what is Seek time - ✔✔the time it takes to move from one point to the pint data
resides.
✔✔how are RAID disk connected to PCs - ✔✔from the SATA ports on the RAID
controller adapter card.
✔✔Describe RAID 0(Striping without Parity) - ✔✔Disk striping divides data into blocks
and spreads the blocks in a fixed order among all the disk in the array.
provides no redundancy. used as a non critical cache store
✔✔What does "SD" in SD card mean - ✔✔Secure Digital
✔✔What does "HC" in SDHC card mean - ✔✔Secure Digital High Capacity
✔✔What are the current speed variants in SD cards - ✔✔Ultra High Speed- up to 180
MBps
UHS-II - up to 156 MBps full duplex/312 MBps half-duplex
