Final Exam Quiz

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

• To store files

• To accelerate virtual-to-physical address translation

• To increase cache memory size

• To replace page tables in virtual memory

What happens when a TLB miss occurs?

• The instruction execution halts until the CPU is restarted

• The CPU fetches the physical address from main memory and updates the TLB

• The page table is disabled, and address translation is skipped

• The process is terminated due to a memory error

What best describes the working set of a process?

• The entire memory available for the process

• The set of pages a process is utilizing

• The memory pages shared between multiple processes

• The pages stored in swap space

How does the resident set differ from the working set?

• The resident set includes only pages currently loaded in RAM

• The resident set includes all pages ever accessed by a process

• The resident set is only used for file I/O operations

• The resident set is always larger than the working set

When does a copy occur in a Copy-On-Write system?

• When a process reads shared memory

• When a process modifies shared memory

• When a process is created

• When a process terminates

Which type of memory access is typically the fastest?

• Random access

• Sequential access

Which of the following is an example of sequential memory access?

• Retrieving a specific record from a database index

• Searching for a variable in an associative array

• Scanning through a linked list stored in memory

• Fetching a memory page using a TLB

What is the main function of the DRAM row buffer?

• To store frequently accessed data for quick retrieval

• To serve as a backup for cache memory

• To temporarily hold a row of DRAM before sending it to the CPU

• To perform error correction on DRAM contents

What is the difference between hardware and software prefetching?

• A) Hardware prefetching is controlled by the CPU, while software prefetching is controlled by the program

• B) Software prefetching is always more efficient than hardware prefetching

• C) Hardware prefetching requires explicit programming instructions

• D) Software prefetching works only in multi-threaded applications

Which of the following is true about swap space?

• It is always faster than RAM

• It prevents the need for page replacement algorithms

• It is typically stored on disk and used when RAM is full

• It eliminates the occurrence of page faults