Chapter 1 Exam - IT Essentials: PC Hardware and Software (Version 4.1)
63
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How many FireWire devices can be supported by a single FireWire port?
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Headphones 3- monitor 2- 1- printer
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Which three devices are considered output devices? (Choose three.)
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EEPROM
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Which type of ROM can be reprogrammed with software while it is still physically installed in the computer?
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It can supply power from the computer to devices
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Which important feature is offered by the USB standard?
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1394
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Which IEEE standard defines the FireWire technology
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1- biometric authentication device
2- digital camera
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Which two devices are considered input devices? (Choose two.)
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BTX و ATX
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Which two form factors are commonly used to build a new computer? (Choose two.)
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4-pin ، 6-pin
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What are the two connector types for the 1394a interface? (Choose two.)
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IRQ 1-
2- DMA
3- I/O address
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Which three system resources are commonly used for communication between the CPU or memory and other components in the computer? (Choose three.)
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RAID
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Which technology would be best to use for drive redundancy and data protection?
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LCD
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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 configuredincorrectly?
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1280 x 800
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Refer to the exhibit. Based on the advertisement that is shown, what is the native resolution of this computer system?
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DDR-400
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Which memory module has a front side bus speed of 200 MHz?
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IRQs
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Which type of computer resources are direct lines to the processor and are used by computer components to request attention from the CPU?
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PC hardware and software technician
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A student has passed the CompTIA A+ certification exam. Based on this passing score, for which job is the student now qualified?
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It instructs the computer how to process information
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What is a function of the operating system in a computer?
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to move the heat away from the CPU
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What is the function of a fan on top of a heat sink?
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1- the number of external or internal drive locations
2- the size of the motherboard and the power supply
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What are two factors that must be considered when choosing a computer case? (Choose two.)
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I = P/V = 100W/9V = 11.11A
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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?
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provides capability to share a keyboard, a mouse, USB devices, and speakers with multiple computers
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What is a function of a KVM switch?
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