ITC 235 TEST QUESTIONS AND ANSWERS
100% VERIFIED
What is the installation of a new device known as? Describe this process - ANSWER
Formatting. A process that erases all data on the device or drive.
Why should a power supply be rated about 30 percent higher than expected needs? -
ANSWER Power supplies that run at less than peak performance last longer and don't
overheat
What is KVM switch, and how might one be useful - ANSWER Keyboard, video, mouse
switch allows you to use one keyboard, monitor, and mouse for multiple computers. Can
be useful in a server room or testing lab where you use more than one computer and
want less clutter on the desk space
What is a barcode reader and how are they typically connected to a computer -
ANSWER Barcode readers are used to scan barcodes at the POS or when taking
inventory. Connected to a computer by either USB port, serial port, keyboard port, or
wireless connection
How does LED backlighting work? How can you tell? - ANSWER Some LCD displays
used LED backlighting to improve display quality and conserve power. Has an LED
lighting array directly behind the viewing surface. You can tell if a monitor uses them by
seeing the lights.
What is a display port? - ANSWER is a digital audio and video interface created by VESA.
Its connections come in two varieties: standard, (shown in the picture) and the smaller
Mini DisplayPort.
What is a biometric device and how is it used - ANSWER Input biological data about a
person to identify the person's fingerprint, handprint, face, voice, eye, or handwritten
signature. Can be used to access Windows or use Touch ID technology
, How does an OLED monitor work? - ANSWER Uses a thin LED layer or film between two
grids of electrodes and does not use backlighting. Does not emit as much light as an
LCD monitor.
Describe the parts of a magnetic hard disk - ANSWER Actuator moves the read/write
heads across the disk surfaces
Read/write head moves across the disk surface as all the disks rotate on a spindle
Platters stack together and spin in unison inside a sealed metal housing that contains
firmware to control reading and writing data
Describe what a hybrid hard drive is? - ANSWER Contains both magnetic and SSD
technologies. The magnetic drive in the drive housing permanently holds data while the
flash component serves as a buffer to improve drive performance.
Describe how an SSD works? - ANSWER Has no moving parts. Built using non-volatile
memory. Flash memory is stored in chips on a circuit board inside the drive housing.
The chips contain grids and rows and columns with two transistors at each intersection
that hold a 0 or 1 bit.
What are the three factors you should consider when purchasing a hard drive that
affects your performance, use, and price - ANSWER Spindle speed, cache or buffer size,
and interface standard, price,
How much data can a double side layer Bluetooth device hold? - ANSWER 25 gb
Which gives more glare OLED or LCD? - ANSWER OLED
Your user complains about password problem, they cannot get their password right. -
ANSWER Check whether the number log key (num lock), it won't show that its off.
How much power is consumed by a load drawing 5 A with 120 V across it? - ANSWER
100% VERIFIED
What is the installation of a new device known as? Describe this process - ANSWER
Formatting. A process that erases all data on the device or drive.
Why should a power supply be rated about 30 percent higher than expected needs? -
ANSWER Power supplies that run at less than peak performance last longer and don't
overheat
What is KVM switch, and how might one be useful - ANSWER Keyboard, video, mouse
switch allows you to use one keyboard, monitor, and mouse for multiple computers. Can
be useful in a server room or testing lab where you use more than one computer and
want less clutter on the desk space
What is a barcode reader and how are they typically connected to a computer -
ANSWER Barcode readers are used to scan barcodes at the POS or when taking
inventory. Connected to a computer by either USB port, serial port, keyboard port, or
wireless connection
How does LED backlighting work? How can you tell? - ANSWER Some LCD displays
used LED backlighting to improve display quality and conserve power. Has an LED
lighting array directly behind the viewing surface. You can tell if a monitor uses them by
seeing the lights.
What is a display port? - ANSWER is a digital audio and video interface created by VESA.
Its connections come in two varieties: standard, (shown in the picture) and the smaller
Mini DisplayPort.
What is a biometric device and how is it used - ANSWER Input biological data about a
person to identify the person's fingerprint, handprint, face, voice, eye, or handwritten
signature. Can be used to access Windows or use Touch ID technology
, How does an OLED monitor work? - ANSWER Uses a thin LED layer or film between two
grids of electrodes and does not use backlighting. Does not emit as much light as an
LCD monitor.
Describe the parts of a magnetic hard disk - ANSWER Actuator moves the read/write
heads across the disk surfaces
Read/write head moves across the disk surface as all the disks rotate on a spindle
Platters stack together and spin in unison inside a sealed metal housing that contains
firmware to control reading and writing data
Describe what a hybrid hard drive is? - ANSWER Contains both magnetic and SSD
technologies. The magnetic drive in the drive housing permanently holds data while the
flash component serves as a buffer to improve drive performance.
Describe how an SSD works? - ANSWER Has no moving parts. Built using non-volatile
memory. Flash memory is stored in chips on a circuit board inside the drive housing.
The chips contain grids and rows and columns with two transistors at each intersection
that hold a 0 or 1 bit.
What are the three factors you should consider when purchasing a hard drive that
affects your performance, use, and price - ANSWER Spindle speed, cache or buffer size,
and interface standard, price,
How much data can a double side layer Bluetooth device hold? - ANSWER 25 gb
Which gives more glare OLED or LCD? - ANSWER OLED
Your user complains about password problem, they cannot get their password right. -
ANSWER Check whether the number log key (num lock), it won't show that its off.
How much power is consumed by a load drawing 5 A with 120 V across it? - ANSWER
