Which security feature in modern CPUs protects memory areas that contain part of the operating system from malware attacks?
Correct answer(s):
- execute disable bit
Subject
Information Technology
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<strong>A user playing a game on a gaming PC with a standard EIDE 5400 RPM hard drive finds the performance unsatisfactory. Which hard drive upgrade would improve performance while providing more reliability and more energy efficiency?</strong>
Correct answer(s):
- an SSD
What is one purpose of adjusting the clock speed within the BIOS configuration settings?
Correct answer(s):
What is the purpose of LoJack?
Correct answer(s):
- It allows the owner of a device to remotely locate, lock, or delete all files from the device.
What data is stored in the CMOS memory chip?
Correct answer(s):
- BIOS settings
Which is a BIOS security feature that can prevent data from being read from a hard drive even if the hard drive is moved to another computer?
Correct answer(s):
- drive encryption
What characteristic of electricity is expressed in watts?
Correct answer(s):
- the work required to move electrons through a circuit multiplied by the number of electrons flowing through a circuit per second
What electrical unit refers to the number of electrons moving through a circuit per second?
Correct answer(s):
- current
What is indicated by the contrast ratio of a monitor?
Correct answer(s):
- the difference in the intensity of light between the brightest white and darkest black that can be displayed
Which type of interface was originally developed for high-definition televisions and is also popular to use with computers to connect audio and video devices?
Correct answer(s):
- HDMI
What makes CRT monitor disposal dangerous for a technician who is handling the disposal?
Correct answer(s):
- potential residual high voltage
How should a technician dispose of an empty inkjet printer cartridge?
Correct answer(s):
- Follow local regulations for disposal.
Which condition refers to a reduced voltage level of AC power that lasts for an extended period of time?
Correct answer(s):
- brownout
How do an inline UPS protect computer equipment against electrical power brownouts and blackouts?
Correct answer(s):
- by using a battery to supply a constant level of voltage
A technician has assembled a new computer and must now configure the BIOS. At which point must a key be pressed to start the BIOS setup program?
Correct answer(s):
- during the POST
What is a function of the BIOS?
Correct answer(s):
A technician has just finished assembling a new computer. When the computer is powered up for the first time, the POST discovers a problem. How does the POST indicate the error?
Correct answer(s):
- It issues a number of short beeps.
What are two reasons for installing a second hard disk drive inside an existing computer? (Choose two.)
Correct answer(s):
- to support a RAID array
- to store the system swap file
Which two components are commonly replaced when a computer system with a newer motherboard is being upgraded? (Choose two.)
Correct answer(s):
- RAM
- CPU
Which two considerations would be of the greatest importance when building a workstation that will run multiple virtual machines? (Choose two.)
Correct answer(s):
- amount of RAM
- number of CPU cores