Exam (elaborations)
SANS SEC 275 Book One Questions and Answers 2024
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SANS SEC 275 Book One
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SANS SEC 275 Book OneMotherboard - answerA circuit board that contains all of the computer system's main
components.
Standard size motherboard - answerATX
Buses - answerCollection of wires that carry signals between various components of the
computer system
Processor - answerThe component of a computer that follows instructions
Processor Core - answerContains the circuitry necessary to execute instructions
Context switching - answerCapability in which a single core processor shares processor
time between multiple applications, switching back and forth between them
RAM - answerRandom Access Memory - temporary place to store material that works
quickly. erased when computer turns off. Volatile, meaning that data stored in the RAM
is only temporary.
DDR4 (double data rate fourth generation) is relatively new and only some
motherboards support it. DDR3 introductced in 2007 and most motherboards support it.
DDR3-2133 RAM refers to a DDR3 RAM with a maximum speed of 2133 MHz
Benefit of RAM - answerSpeed
Solid state drive - answera storage device that typically uses flash memory to store
data, instructions, and information
-Contain no moving parts, more reliable and faster than mechanical drives
-Include firmware and services that enable solid state drie's fast operation
GPU - answerGraphics Processing Unit. Not every computer has it, when a computer
does, the processor offloads the calculations necessary for displaying graphics on a
monitor to the GPU.
-Resides on a card called the graphics card, which contains not just the CPU but also its
own dedicated RAM
Input devices - answerA device used to provide information to a computer. A keyboard
is an example of an input device.
, Types of USB - answerUSB type - Transfer speed
USB 1 - 1.5 Mbit/s
USB 2 - 480 Mbit/s
USB 3 - 4.8 Gbit/s (port color is blue)
USB 3.1 - 10 Gbit/s (port color is teal)
HDMi - answerHigh-definition multimedia interface (HDMI) is a standard for connecting
and transmitting high-definition digital video and audio to the computer from another
source.
USB-C - answerNewer, reversible connector and port that supports charging, data
transfer, and video all in one cable
Heat sinks - answerA device used to absorb and pull away excessive or unwanted heat.
(Fan)
What does a power supply connect to? (pg.37-40) - answerMotherboard
Bit (pg. 44) - answerA contraction of "Binary Digit". A bit is the single unit of information
in a computer, typically represented as a 0 or 1.
1 byte = 8 bits
1 kilobyte (kB) = 1,000 bytes
1 megabyte (MB) = 1,000 kilobytes
1 gigabyte (GB) = 1,000 megabytes
1 terabye (TB) = 1,000 gigabytes
Nibble - answer4 bits
Kibibyte - answer1 byte = 8 bits
1 kibibyte = 1,024 bytes
1 mebibyte = 1,024 kibibyte
1 gibibyte = 1,024 mebibyte
1 tebibyte = 1,024 gibibyte
0b11001 (binary) - answer0d25 (denary)
Denary - answerBase 10 number system, how we normally count, uses digits 0 to 9.
Hexidecimal - answerA base-16 number system that uses sixteen distinct symbols 0-9
and A-F to represent numbers from 0 to 15.
ASCII - answera code for representing English characters as numbers, with each letter
assigned a number from 0 to 127
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