Cache and Virtual Memory

What is the primary purpose of cache memory in a computer system?

• To provide long-term storage for files

• To speed up data access for the CPU by storing frequently used data

• To replace RAM entirely

• To store the operating system

Which of the following cache levels is typically the fastest but smallest?

• L2 Cache

• L1 Cache

• Main Memory (RAM)

• L3 Cache

What is a "cache hit"?

• When the cache is disabled

• When the cache is full and needs replacement

• When the CPU finds the required data in the cache

• When the CPU cannot find data in the cache

What is virtual memory primarily used for?

• To store BIOS settings

• To replace cache memory

• To extend the available memory by using disk space

• To increase the speed of the CPU

What happens when a "page fault" occurs in virtual memory systems?

• The CPU stops executing instructions

• The cache memory is cleared

• The required data is not in RAM and must be loaded from disk

• The system crashes

Which of the following is a common cache replacement policy?

• First-In-First-Out (FIFO)

• Last-In-First-Out (LIFO)

• Random Replacement

• All of the above

What is "thrashing" in virtual memory systems?

• When the CPU overheats due to excessive cache usage

• When the system spends more time swapping pages than executing processes

• When the cache memory becomes corrupted

• When virtual memory is disabled

Which component manages the translation between virtual and physical addresses?

• ALU (Arithmetic Logic Unit)

• MMU (Memory Management Unit)

• GPU (Graphics Processing Unit)

• BIOS (Basic Input/Output System)

What is the main disadvantage of using virtual memory?

• It reduces available disk space

• It is slower than RAM due to disk access

• It increases CPU clock speed

• It requires specialized hardware only found in supercomputers

Which cache mapping technique divides memory into blocks and maps them to cache lines?

• Direct Mapping

• Fully Associative Mapping

• Set-Associative Mapping

• All of the above