CNM324 Exam One Questions And Correct
Answers
What is wrong with most RF (radio frequency) setups? - answerMost of the time RF
propagation occurs in non ideal environments
Wavelength - answerthe distance between identical points in the adjacent cycles of a
waveform. In wireless systems, this l...
CNM 232 MIDTERM EXAM REVIEW
Questions And Correct Answers
ATA - answer✔An acronym for Advanced Technology Attachment; the disk drive standard
commonly known as Integrated Drive Electronics (IDE).
biometrics - answer✔the science and technology of authenticating a person's identity by
measuring physiological features
BIOS - answer✔An acronym for basic input/output system; the set of essential software routines
that test a PC at start up and start the OS
bus - answer✔the set of hardware lines used to transfer data among the components of a PC
cable modem - answer✔A device that sends and receives data through coaxial cables.
CRT - answer✔An acronym for cathode ray tube; the basis for the standard PC display screen.
digital camera - answer✔A type of camera that stores photographic images electronically rather
than on film
digital video camera - answer✔a camera that captures and stores images on a digital
medium(also known as a camcorder)
EEPROM - answer✔An acronym for electrically erasable programmable read-only memory; a
type of EPROM that can be erased with an electrical signal.
electrostatic discharge (ESD) - answer✔The discharge of static electricity from an outside
source— such as human hands—into an integrated circuit, often damaging the circuit.
EPROM - answer✔An acronym for erasable programmable read-only memory; a type of
memory chip that can be reprogrammed after manufacture.
eSTATA - answer✔an external connector that provides fast data transfer for external SATA hard
drives
fingerprint scanner - answer✔A scanner that reads human fingerprints for comparison to a
database of stored fingerprint images.
FireWire - answer✔a PC and digital video serial bus interface standard offering high speed
communications(FireWire is also known as IEEE 1394)
firmware - answer✔software routines stored in read-only memory(ROM)
flyback transformer - answer✔A transformer in a CRT monitor that generates up to 20,000 volts.
form factor - answer✔The physical size and shape of a device. The term is often used to describe
the size of PC cases.
guest operating system - answer✔the operating system running within a virtual machine
hard drive - answer✔a device that reads data from and writes data to one or more inflexible
platters
heat sink - answer✔A device that absorbs and dissipates heat created by an electronic device,
such as a microprocessor.
host operating system - answer✔An operating system running on a physical machine that
executes virtualization software.
IDE controller - answer✔a disk drive standard, known as Integrated Drive Electronics (also see
ATA)
LCD - answer✔an acronym for liquid crystal display; a type of display that uses a liquid
compound with a polar molecular structure sandwiched between two transparent electrodes
memory - answer✔an area where data can be stored and retrieved
microprocessor - answer✔a central processing unit (CPU) on a single chip
modem - answer✔short for modulator/demodulator; a communications device that enables a PC
to transmit data standard telephone line
mouse - answer✔a common pointing device
Network Interface Card (NIC) - answer✔an expansion card used to connect a computer to a local
area network
optical drive - answer✔a disk drive that reads and may write data to optical (compact) discs
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