Minggu, 18 September 2011

Chapter 1 Exam - IT Essentials: PC Hardware and Software (Version 4.1)




 
Answer
Question
63
How many FireWire devices can be supported by a single FireWire port?
Headphones 3- monitor 2- 1- printer
Which three devices are considered output devices? (Choose three.)
EEPROM
Which type of ROM can be reprogrammed with software while it is still physically installed in the computer?
It can supply power from the computer to devices
Which important feature is offered by the USB standard?
1394
 Which IEEE standard defines the FireWire technology
1- biometric authentication device
2- digital camera
Which two devices are considered input devices? (Choose two.)
BTX و  ATX
Which two form factors are commonly used to build a new computer? (Choose two.)
4-pin ،  6-pin
What are the two connector types for the 1394a interface? (Choose two.)
IRQ 1-
2- DMA
3- I/O address
Which three system resources are commonly used for communication between the CPU or memory and other components in the computer? (Choose three.)
RAID
Which technology would be best to use for drive redundancy and data protection?
LCD
A technician receives a complaint of poor image quality after the user changes the native resolution. While investigating the complaint, the technician discovers there is a mismatch between native mode and the native resolution of the peripheral. Which item is configured incorrectly?
1280 x 800
Refer to the exhibit. Based on the advertisement that is shown, what is the native resolution of this computer system?
DDR-400
Which memory module has a front side bus speed of 200 MHz?
IRQs
Which type of computer resources are direct lines to the processor and are used by computer components to request attention from the CPU?
PC hardware and software technician
A student has passed the CompTIA A+ certification exam. Based on this passing score, for which job is the student now qualified?
It instructs the computer how to process information
What is a function of the operating system in a computer?
to move the heat away from the CPU
What is the function of a fan on top of a heat sink?
1- the number of external or internal drive locations
2- the size of the motherboard and the power supply
What are two factors that must be considered when choosing a computer case? (Choose two.)
I = P/V = 100W/9V = 11.11A
A technician creates a simple circuit that has a 9 V light bulb attached to a 9 V battery. The power output of the light bulb is 100 W. Which equation should be used to calculate how much current in amps is required to achieve the full 100 W output from the 9 V bulb?
provides capability to share a keyboard, a mouse, USB devices, and speakers with multiple computers
What is a function of a KVM switch?

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