Huruf D Pictures, Images and Photos

Senin, 07 Maret 2011

IT1 chapter13-ver.4.1

1.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?
3 ft (1 m)
10 ft (3 m)
*33 ft (10 m)
100 ft (30 m)
330 ft (100 m)

2.Which type of encryption key should be enabled on WPA-compliant devices?
28-bit
32-bit
64-bit
*128-bit
255-bit

3.Which two types of batteries should be completely discharged and then fully recharged to remove the charge memory? (Choose two.)
Li-ion
*Ni-Cad
Ni-CH
Ni-Hid
*NiMH
NiMO

4.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 CPU reduces the number of operations by cycle.
The BIOS can use more RAM for I/O buffer space.
The CPU is now able to implement throttling.
*The hard disk swap file is read less frequently.
The hard disk partitions are automatically extended.

5.Which three laptop components should be cleaned during routine maintenance? (Choose three.)
CPU fan
*exterior case
hard disk
*cooling vents
*keyboard
RAM

6.Which portable connection provides the user with the possibility of high-speed Internet connectivity?
cable
*cellular
dial-up
DSL
mobile LAN

7.Which wireless technology offers a maximum data rate of 540 Mbps?
802.3a
802.3n
802.5
802.11g
*802.11n

8.Which three standard procedures must always be included in a preventive maintenance schedule? (Choose three.)
*physical cleaning
memory updates
personnel training
*hard drive maintenance
*software updates
security policies checking

9.Which IEEE 802.11 standard uses only 5 GHz technology?
*802.11a
802.11b
802.11g
802.11x

10.A laptop will only work on AC power. What should be done to fix the problem?
Replace the AC adapter.
*Replace the battery.
Replace the CPU.
Replace the laptop.

11.Refer to the exhibit. Which type of connection is being established between the PDA and the infrared keyboard?
visible
line-of-sight
reflective
close proximity

12.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
premium
prime
*retail
value
wholesale

13.What are two steps a technician should take before repairing a laptop? (Choose two.)
Ground to the power supply before opening the laptop cover.
*Backup all data stored on the laptop.
*Check the warranty to see if repairs must be done by an authorized service center.
Place a piece of tape over the CD laser so it doesn’t damage someone’s eyes when the laptop case is opened.
Disconnect the battery to insure it is not the problem.
Attach the AC adapter in case the problem is a defective battery.

14.Why should care be taken when charging and handling a laptop battery?
It contains toxic material that can leak if mishandled.
A laptop battery is delicate and breaks easily.
*Laptop batteries can explode if mishandled or improperly charged.
It is against the law to mishandle a laptop battery.

15.Which two types of ports can be used to attach an external hard drive to a laptop computer? (Choose two.)
PC Card Type 1
PATA
*USB
*Firewire
Ultra DMA

16.Which standard does Bluetooth incorporate to reduce the chance of interference when multiple Bluetooth devices are present?
IrDA
GPS
*AFH
GSM

17.Which wireless technology is a low-power, short-range technology that uses LEDs to transmit data and uses photodiodes to receive data?
Bluetooth
*infrared
cellular
Wi-Fi
satellite

18.What wireless technology has a range limited to 3 feet (1 m) and cannot penetrate ceilings and walls?
Bluetooth
*infrared
cellular
Wi-Fi
satellite

19.Which type of infrared network bounces the signal off ceilings and walls?
line of sight
*scatter
reflection
optical teleport

20.Which Wi-fi standard uses the 5.0 GHz frequency band?
*802.11a
802.11b
802.11g
802.11x

21.Which two sources can be used to determine the amount of currently installed RAM on a computer? (Choose two.)
Add/Remove Hardware utility
Administrative Tools utility
*POST screen
*System Properties dialog box
Windows BIOS wizard

22.Which two methods can be used to provide security for a Bluetooth connection? (Choose two.)
biometric sensors
RFID tags
*128 bit encryption
Wired Equivalent Privacy (WEP)
*PIN authentication
Service Set Identifier (SSID)

23.Which attribute of a solid state drive would be an advantage when being used in a laptop?
Solid state drives have solid spinning disks that are more durable.
*Solid state drives reduce power usage.
Solid state drives have a higher storage capacity than a regular drive.
Solid state drives are more reliable because an optical lens is used to read the disk.

24.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.)
Upgrade the laptop BIOS.
*Delete files and programs on the hard drive.
Replace the laptop hard drive.
Replace the laptop processor.
*Install additional RAM.
Install the latest operating system patches.

25.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 processor has failed.
The hard drive is bad.
The LCD panel has failed.
The CD/DVD drive has failed.

26.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 BIOS.
The sound could have been disabled through Task Manager.
The sound could have been disabled through a slide switch commonly located below the sound port.
The sound could only be disabled through a control panel. The speakers must be faulty.

27.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 has failed.
The AC adapter needs recharging.
*The AC adapter is not securely connected.
The laptop power supply needs replacing.

28.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.
Replace the keyboard.
Adjust the keystroke rate through the control panel.
Adjust the affected keys through the Windows Key Test and Adjust tool.

29.A laptop fails to start after a new hard drive has been installed. What are two possible causes of this problem? (Choose two.)
The laptop has insufficient RAM.
The hard drive was not hot swappable.
The virtual memory settings are incorrect.
*The hard drive was not connected properly.
*The BIOS does not recognize the new hard drive.

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