Power Fluctuations
What is a UPS?
Uninterruptible power supplies (UPS) contain a battery which is constantly providing a consistent level of voltage to the computer.
What does the BIOS do?
The BIOS checks the internal components and is used to configure boot order and many other hardware settings.
How do you dispose of ink cartridges, monitors, batteries and Nuclear weapons?
By following the procedures established for recycling by the manufacturer. Because they are an environmental hazard, they should never be thrown away.
Virtual computing requires...
Virtual computing requires more powerful hardware configurations because each installation needs its own resources and thus requires a lot of RAM and CPU processing power.
When upgrading your motherboard what other components might you need to also upgrade?
When a motherboard is being upgraded to a newer version, both the CPU and RAM are commonly upgraded to support the motherboard compatibility requirements.
What is a Surges or spike?
Surges and spikes are increased voltage levels.
What is POST?
Power on Self Test.
Daily Double!!!
What does POST do?
What are the hazards of CRT monitors disposal?
CRT monitors do contain lead, barium, and rare earth metals that can be dangerous to the environment if not disposed of properly, but the danger to the technician is in the high voltage levels that can be stored even after powering off the monitor and disconnecting the power cord. A technician might be disposing of a CRT monitor that has the cover ajar or removed and be exposed to the high voltage.
What is contrast ratio?
Contrast ratio is one of many factors that is used to describe the resolution of a monitor. Contrast ratio is a measure of the difference in intensity between white and black areas of the picture. A higher contrast ratio means the monitor can produce pictures with brighter whites and darker blacks.
What are the common reasons to install a second hard disk drive in a computer?
The common reasons to install a second hard disk drive in a computer include: 1) increase storage space, 2) increase hard drive speed, 3) install a second operating system, 4) store the system swap file, 5) provide fault tolerance, and 6) backup the original hard drive.
What is a SAG?
A sag is a short duration reduction in line voltage while a brownout is a reduction in voltage that occurs for an extended period of time.
How do you enter BIOS?
To enter the BIOS setup program, you must press the proper key or key sequence during POST. Many motherboards will display graphics while the computer is checking hardware and waiting for the proper key press for the user to enter the BIOS.
What does drive encryption do?
Drive encryption is used to encrypt hard drives to prevent data access
What is current?
Current refers to the amount of electrons moving through a circuit per second and is measured in amperes or amps.
To SSD or not to SSD that is the question....
Why an SSD over a SATA Mechanical drive?
To obtain best performance an SSD (Solid-State Drive) will perform faster than an SATA Mechanical drive.
Why would you replace the CMOS battery?
BIOS information is maintained through the use of a CMOS battery. If the CMOS battery no longer provides power, configuration settings may be lost.
Where are the BIOS settings stored?
The complementary metal-oxide semiconductor (CMOS) chip is a small memory chip located on the motherboard that is used to store saved BIOS settings.
Why would you adjust the CPU clock speed?
The CPU clock speed can be adjusted up or down within the BIOS configuration settings. By lowering the clock speed, a CPU can run slower and cooler. Increasing the CPU clock speed makes the computer run faster and hotter.
What are Watts?
Watts is the unit used to measure the electrical power. Power refers to the work required to move electrons through a circuit multiplied by the number of electrons flowing through a circuit per second.
What is the biggest concern for a Thin Client?
The network speed at which it can connect to the server.
Do you LoJack? What is LoJack?
The LoJack security feature protects against data theft if a device is stolen by allowing the owner to locate, lock, or delete all files on the device.
To connect my laptop to the internet from anywhere I need a ....
Internet connection by way of a Cellular card or adapter.
What is the execute disable bit?
The execute disable option can be turned on, if the feature is supported by the OS, to prevent malicious code from being executed inside a specific memory area that contains operating system files.
What part would you need to upgrade if you want to turn a computer into a Web Server....
Web servers need a powerful processor!