Hardware and Network Troubleshooting Flashcards
What does POST stand for?
Power-On Self-Test
Explanation:
The POST is special software stored on your system’s read-only memory, which runs every time your machine boots. It runs a check on system components to ensure they are working properly (e.g., your keyboard and mouse).
What is IOPS?
input/output operations per second
Explanation:
IOPS is the number of read/write operations a storage device, such as a NAS or RAID device, can perform per second. A decline in the IOPS number of a storage device can be an indication of failure.
What does RAID stand for?
Redundant Array of Inexpensive Disks
Explanation:
“Independent” is also used interchangeably with “Inexpensive.” RAID is a standard for providing redundancy within disk drives to protect data.
What is S.M.A.R.T.?
self-monitoring, analysis, and reporting technology
Explanation:
S.M.A.R.T. metrics are used to measure hard drive reliability and performance and can create benchmarks for later comparison of performance.
What is “burn-in” on a monitor?
an image that has become permanent on the display
Explanation:
This can happen with any type of monitor, and some monitors have automatic features, such as pixel shifting, to help avoid these issues.
What is a dead pixel?
a pixel that does not display any color
Explanation:
Dead pixels always stay black and never display any color.
What is a stuck pixel?
a pixel that always displays a color
Explanation:
Stuck pixels will always have a color shining through them, even on a completely dark screen.
What does APIPA stand for?
Automatic Private IP Addressing
Explanation:
APIPA is used when a client is using dynamic host configuration protocol (DHCP) addressing but is unable to reach the DHCP server.
What does SSID stand for?
Service Set Identifier
Explanation:
The SSID is a unique name selected to define and identify a wireless network.
What causes mobile batteries to become swollen?
internal components that begin to build up gas
Explanation:
Lithium-Ion batteries are prone to failure and may sometimes begin building up gas when components fail. They become swollen because the battery case is designed to hold this gas inside and not release it into the atmosphere.
What is the reason for creased paper coming out of a printer?
partial obstruction of the paper path
Explanation:
This is usually the result of something being in the way of the print path, but can also result from using the wrong weight of paper in your printer.
What is ghost cursor?
a cursor on the screen that moves without being manipulated
Explanation:
Also known as pointer drift, ghost cursor can happen if you have the wrong drivers installed, or if your touchpad is configured improperly.
What are ghost images?
previously printed images appearing on your paper
Explanation:
Ghost images occur when excess toner has not been removed from the imaging drum by the cleaning process.
What is an LED status indicator?
an LED light visible on storage devices
Explanation:
The LED status indicator light on storage devices can indicate the health of the device. Some LED status lights blink when functioning properly or remain solid if functioning improperly. To assess the meaning of the LED status light, check for vendor-specific information about the device.
What is an indicator of a bad CMOS battery?
inaccurate system date and time
Explanation:
The CMOS battery is responsible for retaining basic information, such as date and time, even when a system is without power. If the CMOS battery is faulty, it may result in inaccurate system date and time.
