Computer Architecture, Memory,
Storage, and Network Security
Fundamentals Exam Questions &
Answers (Grade A+)
ALU (Arithmetic Logic Unit) -
correct answer ✅Performs arithmetic calculations (add, subtract,
multiply) and logic operations (>, <, =, !=).
CU (Control Unit) -
correct answer ✅Controls the flow of data in the CPU, manages
input/output, and controls timing of signals.
CPU Cache -
correct answer ✅Small, fast memory on the CPU storing
frequently-used instructions/data for quicker access than RAM.
PC (Program Counter) -
correct answer ✅Stores the address of the next instruction.
MAR (Memory Address Register) -
correct answer ✅Stores the address of data to be accessed in
memory.
, Computer Architecture, Memory,
Storage, and Network Security
Fundamentals Exam Questions &
Answers (Grade A+)
MDR (Memory Data Register) -
correct answer ✅Stores data being transferred to or from main
memory.
ACC (Accumulator) -
correct answer ✅Stores results of calculations currently being
processed.
Fetch -
correct answer ✅Retrieves the next instruction and the required
data from main memory.
Decode -
correct answer ✅CPU interprets the fetched instruction.
Execute -
correct answer ✅CPU carries out the instruction.
Purpose of Embedded Systems -
correct answer ✅Provide a specific, pre-defined function.
Storage, and Network Security
Fundamentals Exam Questions &
Answers (Grade A+)
ALU (Arithmetic Logic Unit) -
correct answer ✅Performs arithmetic calculations (add, subtract,
multiply) and logic operations (>, <, =, !=).
CU (Control Unit) -
correct answer ✅Controls the flow of data in the CPU, manages
input/output, and controls timing of signals.
CPU Cache -
correct answer ✅Small, fast memory on the CPU storing
frequently-used instructions/data for quicker access than RAM.
PC (Program Counter) -
correct answer ✅Stores the address of the next instruction.
MAR (Memory Address Register) -
correct answer ✅Stores the address of data to be accessed in
memory.
, Computer Architecture, Memory,
Storage, and Network Security
Fundamentals Exam Questions &
Answers (Grade A+)
MDR (Memory Data Register) -
correct answer ✅Stores data being transferred to or from main
memory.
ACC (Accumulator) -
correct answer ✅Stores results of calculations currently being
processed.
Fetch -
correct answer ✅Retrieves the next instruction and the required
data from main memory.
Decode -
correct answer ✅CPU interprets the fetched instruction.
Execute -
correct answer ✅CPU carries out the instruction.
Purpose of Embedded Systems -
correct answer ✅Provide a specific, pre-defined function.
