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What does ‘simultaneous multithreading’ (SMT) refer to in CPU architecture?
A. A technique that allows multiple threads to be executed in parallel on the same core
B. A method for executing multiple instructions from different programs simultaneously
C. A strategy for running multiple instances of the same thread
D. A process for optimizing single-threaded performance
Answer: A technique that allows multiple threads to be executed in parallel on the same core
Which term describes the process of mapping logical addresses to physical addresses?
A. Address Translation
B. Memory Paging
C. Cache Mapping
D. Virtual Addressing
Answer: Address Translation
What does ‘register renaming’ accomplish in modern CPUs?
A. It eliminates false dependencies between instructions by mapping logical registers to physical ones
B. It increases the number of available registers
C. It simplifies the instruction set
D. It optimizes memory access patterns
Answer: It eliminates false dependencies between instructions by mapping logical registers to physical ones
What is ‘out-of-order execution’ and how does it benefit CPU performance?
A. A technique that allows instructions to be executed as resources are available, rather than strictly in order, improving efficiency and throughput
B. A method that ensures all instructions are executed in the order they are received
C. A process of reordering instructions to optimize memory usage
D. A strategy for reducing power consumption by executing instructions out of sequence
Answer: A technique that allows instructions to be executed as resources are available, rather than strictly in order, improving efficiency and throughput
Which of the following is a technique used to improve the performance of a CPU by reducing the number of cache misses?
A. Cache prefetching
B. Memory defragmentation
C. Disk caching
D. Virtualization
Answer: Cache prefetching
What is ‘branch prediction’ and why is it important?
A. A technique to guess the outcome of a branch instruction to improve pipeline performance
B. A method to predict the next memory address to access
C. A strategy to predict future branch instructions
D. An approach to predict the execution time of branches
Answer: A technique to guess the outcome of a branch instruction to improve pipeline performance
What does ‘RAT’ stand for in CPU architecture?
A. Register Alias Table; used to keep track of register renaming
B. Random Access Table; used for memory access
C. Register Allocation Table; used to allocate register resources
D. Rapid Access Table; used for quick data retrieval
Answer: Register Alias Table; used to keep track of register renaming
What is ‘superpipelining’?
A. An enhancement of pipelining that allows overlapping of multiple stages to increase instruction throughput
B. A technique to reduce the number of pipeline stages
C. A method to synchronize multiple pipelines
D. An optimization to increase clock speed
Answer: An enhancement of pipelining that allows overlapping of multiple stages to increase instruction throughput
What is the purpose of ‘paging’ in virtual memory systems?
A. To manage memory by dividing it into fixed-size pages and swapping them in and out of physical memory
B. To increase the speed of data access by using a larger page size
C. To reduce memory usage by compressing pages
D. To allocate memory dynamically based on program needs
Answer: To manage memory by dividing it into fixed-size pages and swapping them in and out of physical memory