JMU COB 204 Final Exam Questions
Fully Solved 2025-2026 Updated.
Data - Answer collection of numbers, characters, names, etc
Ex: Name, Address, GPA
Knowledge - Answer information or data that has been organized and processed to convey
understanding
Information - Answer knowledge derived from data
Ex: students name and GPA
Primary Storage
(Main Memory) - Answer stores information for brief periods of time on chips located on the
mother board
Types: Register, Cache, RAM and ROM
Secondary Storage - Answer stores large amounts of data for long periods of time
Ex: Magnetic tape, Disks, Flash drive
Main Memory
Main Memory = RAM - Answer primary storage, holds software programs and small amounts
of data
RAM
RAM = Main Memory - Answer primary storage, holds software programs and small amounts
of data
, Cache Memory - Answer high speed memory that enables the computer to temporarily store
frequently used instructions, more cache mem = faster computer
(closer to CPU than RAM so its faster)
Read-only Memory (ROM) - Answer where critical instructions are stored, nonvolatile
Ex: instructions for computer boot up
Volatile - Answer needs electricity
Ex: RAM, cache, registers
Non-volatile - Answer does NOT need electricity
Ex: ROM, Flash drive, Hard drive
Computer Processing Unit (CPU) - Answer brain of the computer
(where the ALU sits)
Machine Cycle - Answer 4 step process performed by your computer for each instruction it
receives
Fetch, Decode, Execute, Store
(Friends Don't Eat Seatus)
Output - Answer Any info used to communicate results
Ex: Reports, Sound, Pictures, Image on a screen
Output device - Answer Devices that communicate results
Fully Solved 2025-2026 Updated.
Data - Answer collection of numbers, characters, names, etc
Ex: Name, Address, GPA
Knowledge - Answer information or data that has been organized and processed to convey
understanding
Information - Answer knowledge derived from data
Ex: students name and GPA
Primary Storage
(Main Memory) - Answer stores information for brief periods of time on chips located on the
mother board
Types: Register, Cache, RAM and ROM
Secondary Storage - Answer stores large amounts of data for long periods of time
Ex: Magnetic tape, Disks, Flash drive
Main Memory
Main Memory = RAM - Answer primary storage, holds software programs and small amounts
of data
RAM
RAM = Main Memory - Answer primary storage, holds software programs and small amounts
of data
, Cache Memory - Answer high speed memory that enables the computer to temporarily store
frequently used instructions, more cache mem = faster computer
(closer to CPU than RAM so its faster)
Read-only Memory (ROM) - Answer where critical instructions are stored, nonvolatile
Ex: instructions for computer boot up
Volatile - Answer needs electricity
Ex: RAM, cache, registers
Non-volatile - Answer does NOT need electricity
Ex: ROM, Flash drive, Hard drive
Computer Processing Unit (CPU) - Answer brain of the computer
(where the ALU sits)
Machine Cycle - Answer 4 step process performed by your computer for each instruction it
receives
Fetch, Decode, Execute, Store
(Friends Don't Eat Seatus)
Output - Answer Any info used to communicate results
Ex: Reports, Sound, Pictures, Image on a screen
Output device - Answer Devices that communicate results
