Chapter 13 Exam - IT Essentials: PC Hardware and Software (Version 4.1)

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?
    #IrDA

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.

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