IT Essentials v6.0 Chapter 1 Practice Quiz Answers

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IT Essentials v6.0 Chapter 1 Practice Quiz Answers
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IT-Essentials v6.0 Chapter 1 Practice Quiz Answers

1. A network administrator currently has three servers and needs to add a fourth, but does not have enough room for an additional monitor and keyboard. Which device allows the administrator to connect all the servers to a single monitor and keyboard?

PS/2 hub
USB switch
UPS
KVM switch*
touch screen monitor

Explanation:
A keyboard, video, mouse (KVM) switch is a hardware device that can be used to control more than one computer using a single keyboard, monitor, and mouse. KVM switches provide cost-efficient access to multiple servers using a single keyboard, monitor, and mouse.

2. What is a characteristic of thin clients?

They perform all processing tasks internally.
They require large amounts of fast RAM.
They require a network connection to access storage and processor resources.*
They are able to run multiple operating systems simultaneously.

Explanation:
A thin client device is typically a type of low-end computer that does not perform any processing or data storage locally. A thin client relies on a network connection to access any resources required to perform computing tasks and operate software.

3. Which adapter card in a PC would provide data fault tolerance?

I/O card
RAID card*
capture card
SD card

Explanation:
A RAID controller controls the expansion of internal and external drives as well as providing fault tolerance for storage devices. The I/O card allows additional I/O ports to be added to a computer. A capture card imports video information into a computer and records it to the storage device. SD storage cards are a form of removable storage used widely in portable devices.

4. What unit is used to measure the amount of resistance to the flow of current in a circuit?

volts
amps
ohms*
watts

Explanation:
The resistance of a circuit to the flow of current is measured in ohms (O). Amps (A) measure the amount of electrons moving through the circuit. Watts (W) measure the work required to move electrons through the circuit. Volts (V) measure the work required to move a charge from one location to another.

5. Which two software interfaces allow adjustment of the CPU voltage? (Choose two.)

Control Panel, Device Manager
Control Panel, Power settings
UEFI settings*
Control Panel, System settings
BIOS settings*

Explanation:
When the CPU is being replaced or upgraded, the correct voltage must be matched. The CPU voltage can be set in the BIOS or UEFI software.

6. Which three devices are considered output devices? (Choose three.)

Monitor*
mouse
printer*
keyboard
headphones*
fingerprint scanner

Explanation:
Headphones, monitors, printers, speakers,scanners, fax machines, and projectors are all considered output devices. Fingerprint scanners, keyboards, and mice are all considered input devices.

7. What type of memory is integrated directly into the CPU chip to provide fast access to data?

SODIMM
DDR3
SRAM*
DRAM

Explanation:
Memory is the temporary storage area of data that is accessed by the CPU. The fastest memory is known as static RAM (SRAM). Because SRAM is so fast, it is typically used as L1 cache. L1 cache is internal cache and is integrated into the CPU.

8. Which two pieces of information are needed before selecting a power supply? (Choose two.)

the voltage requirements of peripheral devices
the form factor of the case*
the type of CPU
the total wattage of all components*
the installed operating system

Explanation:
When building a computer, select a power supply with sufficient wattage to power all the components. Each component inside the computer uses a certain amount of power. Obtain the wattage information for the components from the manufacturer documentation. When deciding on a power supply, make sure to choose a power supply that has more than enough power for the current components.
The shape of the computer case is usually determined by the motherboard, power supply, and other internal components.

9. When a computer is being built, which three components must have the same form factor? (Choose three.)

Motherboard*
power supply*
monitor
keyboard
video card
case*

Explanation:
The form factor pertains to the shape of the mother board and case. Additionally the case must accommodate the shape of the power supply.

10. Fill in the blank.

A user has a new computer with only a USB port. The user will need a USB to Ethernet     __adapter__          to connect to the office wired LAN.

Noted: You can write one of 3 following: “adapter“, “adaptor“, “converter“.

Explanation:
A USB to Ethernet adapter would be required to allow connectivity to a LAN in this scenario.

11. Fill in the blank.

Servers and high-end workstations commonly use          __buffered__            memory, which is specialized memory as it has additional circuitry to manage large amounts of RAM.

Noted: You can write one of 3 following: “buffered“, “buferred“, “bufered“.

Explanation:
Buffered memory has additional circuitry to manage the large amounts of RAM needed by server applications.

12. Which term refers to the technique of increasing the speed of a processor from the specified value of its manufacturer?

throttling
hyperthreading
multitasking
overclocking*

Explanation:
Overclocking is a technique that is used to make a processor work at a faster speed than its original specification. Overclocking is not a reliable way to improve computer performance and can result in damage to the CPU.

13. Which hardware upgrade would allow the processor in a gaming PC to provide the optimal gaming performance?

liquid cooling
a fast EIDE drive
large amounts of fast RAM*
a high capacity external hard drive

Explanation:
Faster RAM will help the processor to keep all of the data in sync because the data that it needs to calculate can be retrieved when it is needed. The more RAM that the computer has, the less often the computer needs to read from slower storage such as hard drives or SSDs.

14. A customer has requested that a PC be built that will support eSATA. Which component should be checked to be sure that this feature is supported?

CPU
Chipset*
hard disk
RAM module

Explanation:
The chipset on a motherboard consists of integrated circuits that control how system hardware interacts with the CPU and motherboard. It also provides the capability and features needed, such as the maximum memory supported on the motherboard, multiple USB ports, eSATA connections, surround sound, and video.

15. What danger is posed to a technician by opening a power supply even after it has been unplugged for an extended period of time?

shock from stored high voltaje*
exposure to heavy metals
poisoning from toxic fumes
burns from hot components

Explanation:
Do not open a power supply. Electronic capacitors located inside a power supply can hold a charge for extended periods of time, even after the main power has been disconnected.

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