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GFACT Exam Review Book 1 Questions and Answers 100% Solved
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GFACT Exam Review Book 1
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GFACT Exam Review Book 1Motherboard – answer A circuit board that contains all of the computer system's main
components.
Sizes:
E-ATX: The largest size, known as 'extended ATX'.
ATX: The 'standard' size.
micro-ATX: Smaller than ATX.
mini-ITX: Even smaller still.
Type 1 Hypervisor - answer where the virtualization occurs at the firmware level
Type 2 Hypervisor - answer where the virtualization is done by a software program that
runs on an operating system
Socket - answer kind of connector that the CPU processor has
Buses - answer responsible for moving data btw components
CPU (Central Processing Unit) - answer The internal operating unit or "brain" of a
computer.
Cores - answerresponsible for executing instructions
Clock Speed - answerdictates how many instructions the CPU can process each
second
* processor that can execute one instruction per second has a clock speed of 1 Hz
(hertz)
Context Switching - answermoving programs in and out of the CPU
RAM (Random Access Memory) - answerstores the computer's programs and data
temporarily while power is on.
Factors:
DDR# stands for double data rate
*3
*4
*5
,GPU (graphics processing unit) - answerA processor on a video card used to create
graphics. It takes the load off the CPU.
Heat Sinks - answerA device used to absorb and pull away excessive or unwanted
heat.
Power supply or Power Supply Unit (PSU) - answerresponsible for taking power from
either the mains power supply or a battery (in the case of laptops) and converting then
delivering it to the computer components.
SATA (Serial Advanced Technology Attachment) data cable - answerused for powering
hard drives
ATX (Advanced Technology Extended) cable - answerruns to the motherboard
PCI Express (PCIe) - answerruns to the graphics card
Bits - answerthe smallest unit of data in a computer
All data in a computer system is made up of bits:
1 byte is 8 bits.
1 kilobyte (kB) is 1000 bytes.
1 megabyte (MB) is 1000 kilobytes.
1 gigabyte (GB) is 1000 megabytes.
1 terabyte (TB) is 1000 gigabytes.
Oh, and 4 bits (half a byte) is called a nibble...
1024 Byte - answer1 byte is 8 bits.
1 kibibyte (KiB) is 1024 bytes.
1 mebibyte (MiB) is 1024 kibibytes.
1 gibibyte (GiB) is 1024 mebibytes.
1 tebibyte (TiB) is 1024 gibibytes.
Notation:
0d - answerdenary
Notation:
0b - answerbinary
Notation:
0x - answerhexadecimal
d10 is 10 in denary
0b10 is 10 in binary
0x10 is 10 in hexadecimal - answer10 representation
, Encoding - answera mechanism enabling us to take data in one format, e.g. binary and
then 'package' it in another, e.g. ASCII
Proposition (Boolean Statement) - answerone which can only be true or false
Logical AND - answerUsed to only execute the following statement or block of
statements if both conditions are true; represents as &&
AND is considered to be a connective. A connective is used to connect two or more
propositions. The AND connective specifically is called a conjunction.
Logical OR - answerUsed to execute the following statement or block of statements if
one of the conditions are true; represents as ||
OR is a type of connective and the OR connective itself is known as a disjunction.
Logical NOT - answereffect of inverting whatever input it receives, so true becomes
false and false becomes true; represents as !
NOT is a type of connective and the NOT connective itself is known as a negation.
Logical NAND - answeran AND circuit followed by a NOT circuit
NAND is a type of connective and the NAND connective itself is known as an alternative
denial
Logical NOR - answerthe OR circuit followed by a NOT circuit
NOR is a type of connective and the NOR connective itself is known as a joint denial
Logical XOR (Exclusive OR) - answerchecks if only one side or the other is true but not
both; a crucial concept in encrypting data and one of the most simple forms of
encryption/decryption
XOR is a type of connective and the XOR connective itself is known as an exclusive
disjunction
Tautology - answeran assertion or formula which is always true no matter the inputs
Contradiction - answerwhere all the results of a logical statement are always false no
matter the inputs
Contigency - answera logical statement where the outcomes could be true or false
contingent on the inputs
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