Intro to Information Technology Final
Exam Answered Correct Graded To
Pass.
Define input - Answer Any data or instructions used by a computer
What is QWERTY? - Answer This name reflects the keyboard layout by taking the letters of the
first six alphabetic characters found on the top row of keys
How do you use a toggle key? Identify an example of a toggle key. - Answer A key that turns a
feature on/off (caps lock)
How does an optical mouse function? - Answer A type of mouse that emits and senses light to
detect mouse movement
How does a trackball function? - Answer Similar to that of a traditional computer mouse, the
trackball mouse is an input device and functions in the same way, except that the trackball
mouse remains stationery and does not move about on the operating surface. The trackball
mouse configuration has a small solid ball and typically two buttons placed strategically to allow
effective pointing ability without the need of excessive arm and wrist movement.
Define pixel - Answer Smallest unit on the screen that can be turned on and off and made
different shades
What is meant by the phrase Active display area? How is it measured? - Answer The diagonal
length of a monitors viewing area. Common sizes 15,17,19,21,22
Define OMR - Answer It senses the presence or absence of a mark. (The thing used to score
scantrons)
Define dot pitch and how it affects screen quality - Answer The distance between each pixel.
The lower the dot pitch, the clearer the picture. The shorter the distance between pixels the
clearer the image.
, Define tracks, sectors, and cylinders. - Answer The track is a closed ring on a disc on which
data is reported. A sector is a section shaped like a pie wedge that divides the tracks on a disc. A
cylinder runs through each track of a stack of platters. They differentiate different files stored on
the same track and sector of different platters.
Define head crash - Answer A head crash is when the read/write head makes contact with a
hard disc surface or particles on it's surface. The disc surface becomes scratched and some data
is destroyed.
Give examples of secondary storage. - Answer Hard disc, magnetic tape, cds, dvds, more
What type of ports do external hard drives usually connect? - Answer USB or thunderbolt
Compare/contrast RAM versus ROM. - Answer Ram- volatile temporary storage that holds the
program in data the cpu is presently processing. (temporary storage)
Rom- refers to chips that have programs built into them at the factory. Rom stores programs
that boot the computer called firmware.
What is meant by word nonvolatile? - Answer retaining data even if there is a break in the
power supply.
is computer memory that can retain the stored information even when not powered. Examples
of ____ memory include read-only memory, flash memory, most types of magnetic computer
storage devices (e.g. hard disks, floppy disks, andmagnetic tape), optical discs, and early
computer storage methods such as paper tape and punched cards. SECONDARY STORAGE
What is the process of accessing information from secondary storage devices? - Answer
reading
Define access speed: Measures the amount of time required by the storage device to retrieve
data and programs. - Answer
What is purpose of cache area? - Answer Cache memory, also called CPU memory, is random
access memory (RAM) that a computer microprocessor can access more quickly than it can
access regular RAM.
Why use file compression? - Answer Compressed files take up less storage space and can be
Exam Answered Correct Graded To
Pass.
Define input - Answer Any data or instructions used by a computer
What is QWERTY? - Answer This name reflects the keyboard layout by taking the letters of the
first six alphabetic characters found on the top row of keys
How do you use a toggle key? Identify an example of a toggle key. - Answer A key that turns a
feature on/off (caps lock)
How does an optical mouse function? - Answer A type of mouse that emits and senses light to
detect mouse movement
How does a trackball function? - Answer Similar to that of a traditional computer mouse, the
trackball mouse is an input device and functions in the same way, except that the trackball
mouse remains stationery and does not move about on the operating surface. The trackball
mouse configuration has a small solid ball and typically two buttons placed strategically to allow
effective pointing ability without the need of excessive arm and wrist movement.
Define pixel - Answer Smallest unit on the screen that can be turned on and off and made
different shades
What is meant by the phrase Active display area? How is it measured? - Answer The diagonal
length of a monitors viewing area. Common sizes 15,17,19,21,22
Define OMR - Answer It senses the presence or absence of a mark. (The thing used to score
scantrons)
Define dot pitch and how it affects screen quality - Answer The distance between each pixel.
The lower the dot pitch, the clearer the picture. The shorter the distance between pixels the
clearer the image.
, Define tracks, sectors, and cylinders. - Answer The track is a closed ring on a disc on which
data is reported. A sector is a section shaped like a pie wedge that divides the tracks on a disc. A
cylinder runs through each track of a stack of platters. They differentiate different files stored on
the same track and sector of different platters.
Define head crash - Answer A head crash is when the read/write head makes contact with a
hard disc surface or particles on it's surface. The disc surface becomes scratched and some data
is destroyed.
Give examples of secondary storage. - Answer Hard disc, magnetic tape, cds, dvds, more
What type of ports do external hard drives usually connect? - Answer USB or thunderbolt
Compare/contrast RAM versus ROM. - Answer Ram- volatile temporary storage that holds the
program in data the cpu is presently processing. (temporary storage)
Rom- refers to chips that have programs built into them at the factory. Rom stores programs
that boot the computer called firmware.
What is meant by word nonvolatile? - Answer retaining data even if there is a break in the
power supply.
is computer memory that can retain the stored information even when not powered. Examples
of ____ memory include read-only memory, flash memory, most types of magnetic computer
storage devices (e.g. hard disks, floppy disks, andmagnetic tape), optical discs, and early
computer storage methods such as paper tape and punched cards. SECONDARY STORAGE
What is the process of accessing information from secondary storage devices? - Answer
reading
Define access speed: Measures the amount of time required by the storage device to retrieve
data and programs. - Answer
What is purpose of cache area? - Answer Cache memory, also called CPU memory, is random
access memory (RAM) that a computer microprocessor can access more quickly than it can
access regular RAM.
Why use file compression? - Answer Compressed files take up less storage space and can be
