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 Chapter 13 V4.1 - IT Essentials: PC Hardware and Software

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PostSubyek: Chapter 13 V4.1 - IT Essentials: PC Hardware and Software   Thu Jun 16, 2011 2:36 pm

1
Which portable connection provides the user with the possibility of high-speed Internet connectivity?
#cellular


2
Which standard does Bluetooth incorporate to reduce the chance of interference when multiple Bluetooth devices are present?
#AFH

3
What wireless technology has a range limited to 3 feet (1 m) and cannot penetrate ceilings and walls?
#infrared

4
Which wireless technology is a low-power, short-range technology that uses LEDs to transmit data and uses photodiodes to receive data?
#infrared

5
Some keys on a laptop work intermittently. They sometimes type the letter and sometimes do not. What should a technician do to fix this problem?
#Clean the keyboard.

6
A student unpacks a new laptop, attaches the AC adapter, and powers it up. However, the laptop power LED is off. What is the probable cause of the problem?
#The AC adapter is not securely connected.

7
Refer to the exhibit. Which type of connection is being established between the PDA and the infrared keyboard?
#line-of-sight

8
A technician is working on a laptop that has excessive hard drive activity. Which two actions can the technician take to resolve the problem? (Choose two.)
#Delete files and programs on the hard drive.
#Replace the laptop hard drive.


9
What are two steps a technician should take before repairing a laptop? (Choose two.)
#Backup all data stored on the laptop.
#Check the warranty to see if repairs must be done by an authorized service center.


10
A laptop that worked fine previously now fails to emit sound. A technician finds that the sound is still enabled through the control panel. What could be causing the problem?
#The sound could have been disabled through a slide switch commonly located below the sound port.

11
Which wireless technology offers a maximum data rate of 540 Mbps?
#802.11n

12
Which two sources can be used to determine the amount of currently installed RAM on a computer? (Choose two.)
#POST screen
#System Properties dialog box


13
The design department recently doubled the RAM capacity in all of the laptops. After the upgrade, the laptop users reported experiencing improved performance. Which operational benefit have the users noticed after the RAM increase?
#The hard disk swap file is read less frequently.

14
A laptop that previously worked now fails to boot. The cursor fails to appear on the screen. When a bootable DVD is inserted, the system still fails to boot even though it is set to boot from CD/DVD. The fan turns, so power is applied and the power light is on. The technician installs the hard drive in another laptop and it works there. What is the probable cause of the problem?
#The CD/DVD drive has failed.

15
Which two types of batteries should be completely discharged and then fully recharged to remove the charge memory? (Choose two.)
#Ni-Cad
#NiMH



16
Which attribute of a solid state drive would be an advantage when being used in a laptop?
#Solid state drives reduce power usage.[/color]

17
A laptop fails to start after a new hard drive has been installed. What are two possible causes of this problem? (Choose two.)
#The hard drive was not connected properly.
#The BIOS does not recognize the new hard drive.


18
Which Wi-fi standard uses the 5.0 GHz frequency band?
#802.11a

19
Which type of infrared network bounces the signal off ceilings and walls?
#scatter

20
Which two types of ports can be used to attach an external hard drive to a laptop computer? (Choose two.)
#USB
#Firewire


21
Manufacturers often offer devices in two versions, one with all the necessary manuals and drivers and one without. Which two names are given to these versions? (Choose two.)
#OEM
#retail


22
Which three standard procedures must always be included in a preventive maintenance schedule? (Choose three.)
#physical cleaning
#hard drive maintenance
#software updates


23
Which IEEE 802.11 standard uses only 5 GHz technology?
#802.11a

24
The accounting department has received a new laser printer. According to the printer technical specification, the printer complies with the Bluetooth Class 2 specification. What is the maximum distance that any device could be expected to successfully send print jobs?
#33 ft (10 m)

25
Why should care be taken when charging and handling a laptop battery?
#Laptop batteries can explode if mishandled or improperly charged.

26
Which two methods can be used to provide security for a Bluetooth connection? (Choose two.)
#128 bit encryption
#PIN authentication


27
Which type of encryption key should be enabled on WPA-compliant devices?
#128-bit

28
Which three laptop components should be cleaned during routine maintenance? (Choose three.)
#exterior case
#cooling vents
#keyboard


29
A laptop will only work on AC power. What should be done to fix the problem?
#Replace the battery.
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PostSubyek: Re: Chapter 13 V4.1 - IT Essentials: PC Hardware and Software   Thu Jun 16, 2011 6:22 pm

1
Which acronym describes a laptop part that can be replaced by a customer?
– CRU

2
Why should care be taken when charging and handling a laptop battery?
– Laptop batteries can explode if mishandled or improperly charged.

3
Which IEEE specification defines the FireWire standard?
– 1394

4
A laptop fails to start after a new hard drive has been installed. What are two possible causes of this problem? (Choose two.)
– The hard drive was not connected properly.
– The BIOS does not recognize the new hard drive.


5
Which statement is true about version control of files that are transferred between a Windows laptop and a Windows desktop PC?
– Windows does not allow files with the same name to exist in the same folder.

6
Refer to the exhibit. Which type of connection is being established between the PDA and the infrared keyboard?
– line-of-sight

7
A customer is unable to use a laptop on battery power for more than 30 minutes. What would a technician suggest to this customer?
– Replace the laptop battery.

8
Which maintenance task can be performed to speed up file access on a laptop?
– disk defragmentation

9
Some keys on a laptop work intermittently. They sometimes type the letter and sometimes do not. What should a technician do to fix this problem?
– Clean the keyboard.

10
A laptop that previously worked now fails to boot. The cursor fails to appear on the screen. When a bootable DVD is inserted, the system still fails to boot even though it is set to boot from CD/DVD. The fan turns, so power is applied and the power light is on. The technician installs the hard drive in another laptop and it works there. What is the probable cause of the problem?
– The CD/DVD drive has failed.

11
Which two types of batteries should be completely discharged and then fully recharged to remove the charge memory? (Choose two.)
– Ni-Cad
– NiMH


12
Which Windows Vista tool is accurately described?
– Disk Defragmenter is meant to be used when a computer has files that are modified, added, or deleted often.

13
Which laptop component is typically considered a CRU?
– RAM

14
Which attribute of a solid state drive would be an advantage when being used in a laptop?
– Solid state drives reduce power usage.

15
What are two steps a technician should take before repairing a laptop? (Choose two.)
– Backup all data stored on the laptop.
– Check the warranty to see if repairs must be done by an authorized service center.


16
A technician is trying to repair a laptop where the images on the display can only be seen when looking at the screen from an angle. What needs to be done to fix the problem?
– Replace the LCD backlight.

17
Which IEEE specification defines WPAN technology?
– 802.15.1

18
Which type of encryption key should be enabled on WPA-compliant devices?
– 128-bit

19
Which three standard procedures must always be included in a preventive maintenance schedule? (Choose three.)
– physical cleaning
– hard drive maintenance
– software updates


20
A laptop fails to start after a new hard drive has been installed. What are two possible causes of this problem? (Choose two.)
– The hard drive was not connected properly
– The BIOS does not recognize the new hard drive.
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Chapter 13 V4.1 - IT Essentials: PC Hardware and Software
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