IT Essentials Chapter 1 Exam V6 2016

1. What are two factors that must be considered when choosing a computer case? (Choose two.)

the size of the monitor

the speed of the memory

the number of internal drive locations*

the size of the motherboard and the power supply*

the number of LED indicators at the front of the case

2. A technician looks at a motherboard and sees a 24-pin connector. What component would connect to the motherboard through the use of this 24-pin connector?

power supply*

video card

PATA optical drive

SATA drive

floppy drive

3. What electrical unit refers to the number of electrons moving through a circuit per second?

current*

voltage

resistance

power

4. What characteristic of electricity is expressed in watts?

the amount of work required to move electrons through a circuit

the resistance to the flow of current in a circuit

the amount of electrons flowing through a circuit per second

the work required to move electrons through a circuit multiplied by the number of electrons flowing through a circuit per second*

5. Which type of memory is primarily used as cache memory?

DRAM

RAM

ROM

SRAM*

6. Refer to the exhibit. Which type of adapter is shown?

sound

RAID

video

network interface*

7. Which component controls the communications and interactions between the CPU and other components on the motherboard?

RAM

BIOS

CMOS

chipset*

8. Which two activities are normally controlled by the Northbridge part of the chipset? (Choose two.)

communication between the CPU and the I/O ports

access to the RAM*

communication between the CPU and the hard drive

access to the video card*

communication between the CPU and the sound card

9. Which unit of measurement is used to indicate the hard drive speed?

revolutions per minute*

gigabytes

pages per minute

clusters per minute

10. 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?

FireWire

DVI

HDMI*

USB

VGA

11. Which two devices are considered input devices? (Choose two.)

biometric authentication device*

printer

digital camera*

projector

speakers

12. What is indicated by the contrast ratio of a monitor?

the difference in the intensity of light between the brightest white and darkest black that can be displayed*

how often the picture image is refreshed

the total number of pixels that make up the picture

the ratio of the horizontal and vertical viewing areas of the monitor

13. What type of connector can be used to connect an internal hard drive to the motherboard?

USB

SATA*

eSATA

Thunderbolt

14. Which two factors must be considered when replacing old RAM modules in a PC? (Choose two.)

The new RAM must be compatible with BIOS or UEFI.

The new RAM must be compatible with the motherboard.*

The speed of the new RAM must be supported by the chipset.*

The power supply must provide the voltage that is requred by the new RAM.

The new RAM must match the old RAM in terms of capacity and speed.

15. Which term is used to define the wires on a motherboard that move data from one part of a computer to another?

bus*

I/O card

bridge

chipset

16. When a new PC is being built, which component has the most influence when selecting the case and power supply?

video card

sound card

RAM module

motherboard*

hard disk type

17. What is the function of the power supply?

to convert AC power into a lower voltage DC power*

to convert AC power into a higher voltage DC power

to convert DC power into a lower voltage AC power

to convert DC power into a higher voltage AC power

18. Which two considerations would be of the greatest importance when building a workstation that will run multiple virtual machines? (Choose two.)

amount of RAM*

number of CPU cores*

water cooling

powerful video card

high-end sound card

19. 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?

a 7200 RPM EIDE hard drive

a 7200 RPM SATA hard drive

a 10,000 RPM SATA hard drive

an SSD*

20. What three components should be included in a computer that is used to create TV commercials and music videos? (Choose three.)

extra DIN-6 ports

specialized video card*

extra PS/2 ports

large and fast hard drives*

VGA adaptors

specialized audio card*

21. What are two hardware requirements for computers that will be used to run multiple virtual machines? (Choose two.)

large amounts of RAM*

a multicore CPU*

a high resolution video card

a high speed wireless adapter

multiple monitors

22. Which memory technology allows two memory modules to be accessed at the same time?

dual channel*

double-sided

SRAM

ECC

23. Which security feature in modern CPUs protects memory areas that contain part of the operating system from malware attacks?

encryption

TPM

execute disable bit*

LoJack