Weeks 1 -3 Quiz

What is a feature of non-contiguous allocation in memory management?

• It improves memory utilization by using only large contiguous blocks.

• It leads to external fragmentation only.

• It allows processes to be loaded in non-adjacent memory blocks.

• It always requires special hardware.

What is the address space of a process in the context of virtual memory?

• The total physical memory available to the system.

• The range of virtual memory addresses a process can use.

• The cache memory available for fast access.

• The swap space used by the operating system.

What is thrashing in a virtual memory system?

• The efficient use of cache memory.

• A condition where excessive swapping reduces performance.

• The use of virtual memory to execute large programs.

• A state when memory is completely utilized.

What is the primary role of a Translation Lookaside Buffer (TLB)?

• To store cache memory.

• To improve disk I/O speed.

• To reduce the time for virtual-to-physical address translation.

• To manage system interrupts.

What does the working set of a process represent?

• The pages of the process in the TLB.

• The pages currently stored in the swap space.

• The physical memory allocated to the process.

• The set of pages the process needs to run efficiently.

What is MMIO (Memory-Mapped I/O)?

• A method where I/O devices use the ALU for communication.

• A method where I/O devices are mapped into the system's memory space.

• A technique for speeding up cache access.

• A memory protection mechanism.

What is Copy-On-Write (COW)?

• A method to optimize the reading of files from disk.

• A memory management optimization where memory pages are shared until modified.

• A technique for sequential access of memory.

• A method for improving TLB hit rates.

Which type of memory access is like listening to a cassette tape or CD?

• Random access

• Linear access

• Associative access

• Sequential access

What is software prefetching?

• Prefetching data into the cache based on software instructions.

• The automatic retrieval of data from disk to RAM.

• Prefetching data into the cache based on patterns detected by hardware.

• An optimization technique used by the operating system scheduler.

What is the resident set in the context of virtual memory?

• The total number of pages in virtual memory.

• The pages currently loaded in physical memory.

• The pages that have been swapped to disk.

• The pages mapped to the TLB.