Thursday, January 27, 2011

IT Essential v4.1 Chapter 1

IT Essential v4.1 Chapter 1
1.Which type of ROM can be reprogrammed with software while it is still physically installed in the computer?
 2.Why are solid state drives reliable and therefore suitable to be installed in computers used in harsh industrial workplaces?
*They consume less power and have no moving parts.

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

4.Which three system resources are commonly used for communication between the CPU or memory and other components in the computer? (Choose three.)
*I/O address
 5.Which two activities are normally controlled by the Northbridge part of the chip set? (Choose two.)
*access to the RAM
*access to the video card

 6.Which expansion slot would be used to install a video capture card in a new computer?
*Peripheral Component Interconnect-Express

 7.A technician needs to back up 4 GB of data using a single storage medium. Which medium can hold the entire 4 GB on a single disc?

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

 9.Which type of RAM chip has the fastest clock rate but consumes the least power and generates the least heat?

 10.PATA data cables are available in two different types. The types are distinguished by the number of conductors. Which two types are available? (Choose two.)

 11.Which two characteristics are determined by the chip set on a motherboard? (Choose two.)
*maximum amount of memory that can be installed
*type of connectors that will be on the motherboard

 12.A technician is helping a customer compare two hard drives. Which unit of measurement is used for the hard drive speed?
*revolutions per minute

 13.Which important feature is offered by the USB standard?
*It can supply power from the computer to devices.

 14.Which CPU architecture uses a small set of instructions that are designed to be executed rapidly?

 15.Which type of memory is unable to have the contents modified?

 16.Which two devices are considered input devices? (Choose two.)
*biometric authentication device
*digital camera

 17.Which technology would be best to use for drive redundancy and data protection?

 18.Which two characteristics of a motherboard can be determined by the form factor? (Choose two.)

 19.What is the function of a capture card?
*enables a video signal to be recorded to the computer hard drive

 20.Which two form factors are commonly used to build a new computer? (Choose two.)

 21.Which type of computer resources are direct lines to the processor used by computer components to request information from the CPU?

 22.Refer to the exhibit . Which type of cable is shown in the graphic?

23.Which two categories are used to classify CPU architecture? (Choose two.)

24.What are the two connector types for the 1394a interface? (Choose two.)

25.A company employee has very important data on a computer. What RAID level should be used if the criteria include that data be written and read simultaneously and that all data be duplicated using a minimum of three drives?

26.Refer to the exhibit. Based on the advertisement that is shown, what is the native resolution of this computer system?
*1280 x 800

27.How many conductors are found in a SATA data cable?

28.A customer orders a new computer and specifies an internal read-write, non-volatile storage device that uses low power, has fast access to data, and is reliable. What is a suitable storage device that meets these requirements?
*solid state drive

IT Essential v4.1 Chapter 2

IT Essential v4.1 Chapter 2
1 Which three computer components contain hazardous materials and require special handling for disposal? (Choose three.)
*printer toner cartridges

2 A technician accidentally spills a cleaning solution on the floor of the workshop. Where would the technician find instructions on how to properly clean up and dispose of the product?
*the material safety data sheet

3 Which two tools can help protect against ESD? (Choose two.)
*antistatic wrist strap
*antistatic mat

4 Refer to the exhibit. Which type of tool is presented in the graphic?
*Phillips-head screwdriver

5 Which precaution should be taken when working around electronic devices?
*Avoid using magnetized tools.

6 Which step should be performed first when servicing computer equipment?
*Turn off and remove the power source.

7 Which condition refers to a sudden increase in voltage, which is usually caused by lightning?

8 A technician has a room of computers which are running very hot. The technician discovers that the heat sinks in the computers are very dusty. What should the technician use to clean the heat sinks?
*compressed air

9 Which tool in Windows XP gives a technician access to initialize disks and create partitions?
*Disk Management

10 The performance of a computer is reduced after it has been using the Internet. Which three tools could be run to try to improve the performance of the computer? (Choose three.)
*Spyware Remover
*Disk Cleanup

11 Which two types of tools can help protect a computer from malicious attacks? (Choose two.)
*Anti-virus software
*Spyware Remover

12 Which Windows XP command-line utility scans the critical files of the operating system and replaces any files that have been corrupted?
*System File Checker

13 Which characteristic defines EMI?
*electromagnetic fields that are used to reshape weak signals that are affected by external noise

14 Which computer components must a technician never try to work on when wearing an antistatic wrist strap?
*CRT monitor

15 Which condition refers to a reduced voltage level of AC power that lasts for a period of time?

16. What is recommended to remove dust from inside a computer case?
*can of compressed air

17. Refer to the exhibit. Which type of tool is shown in the graphic?
*digital multimeter

18 Which tool should be used if a user needs to optimize space on a hard drive?

19 What are two significant sources of EMI? (Choose two.)
*infrared mice
*electrical storms

20 A technician wants to limit the chances of ESD affecting his workspace. Which three precautions should be taken? (Choose three.)
*Ensure antistatic mats are on the workbench and floor.
*Wear an antistatic wrist strap.
*Keep all components in antistatic bags.

21 What is the proper way to dispose of outdated CRTs?
*All of the components should be disposed of in compliances with local environmental regulations.

IT Essential v4.1 Chapter 3

IT Essential v4.1 Chapter 3
1 Refer to the exhibit. Which type of port is shown?

2 After a technician has assembled a new computer, it is necessary to configure the BIOS. At which point must a key be pressed to start the BIOS setup program?
*during the POST

3 A technician is troubleshooting a computer that has a malfunctioning floppy drive. The technician observes that the floppy drive light remains lit constantly. How should the technician attempt to repair the problem?
*Connect the data cable making sure that the colored stripe on the cable is aligned with pin 1 on the drive and the motherboard.

4 What is a convenient way that a technician can tell whether a ribbon cable is for an IDE hard drive or a floppy drive?
*The floppy cable motherboard connector is normally gray.

5 Which action is recommended to prevent the motherboard from contacting the metal base of the case?
*Use standoffs to keep the motherboard above the metal base.

6 A technician is installing a new power supply in a computer. Which type of power connector should be used to connect to a PATA hard drive?

7 Which solution should be used to clean a CPU and a heat sink?
*isopropyl alcohol

8 Which type of drive is installed in a 5.25-inch bay?
*floppy drive

9 What is the most reliable way for users to buy the correct RAM to upgrade a computer?
*Check the motherboard manual or manufacturer’s website.

10 A technician is assembling a new computer. Which two components are often easier to install before mounting the motherboard in the case? (Choose two.)

11 A technician has just finished assembling a new computer. When the computer is powered up for the first time, the POST discovers a problem. How does the POST indicate the error?
*It issues a number of short beeps.

12 Which additional 4-pin or 6-pin power connector is required by some motherboards?

13 Refer to the exhibit. Which type of hard drive uses the power connector shown?

14 Which port is typically used for external wireless NICs?

15. A field technician has been asked to install a wireless 802.11g NIC in a computer, but is unsure about the expansion slots available. Which two types of wireless NICs should the technician have available? (Choose two.)

16. A technician is installing a new power supply in a computer. Which type of power connector should be used to connect to a floppy drive?

17. Which internal component of a computer uses a 3-pin power connector?

18. When building a computer, which two components are normally installed in 3.5-inch drive bays? (Choose two.)
*hard drive
*floppy drive

19. How many pins are in a SATA data cable connector?

20. A technician is installing a new CPU in a ZIF socket on a motherboard. What is the primary way of securing the CPU in place?
*load lever.