6. While working with computer architectures, a Computer Engineer observes that when the CPU needs to access data, the access time is significantly reduced if the data is found in the cache memory rather than in the main memory. To further optimize the performance of the computing system, the engineer decides to explore various cache mapping techniques. Which of the following cache mapping techniques is NOT typically used in computer architecture for cache memory management? A) Direct-mapped cache B) Associative-mapped cache C) Sector-mapped cache D) Random-mapped cache

6. While working with computer architectures, a Computer Engineer observes that when the CPU needs to access data, the access time is significantly reduced if the data is found in the cache memory rather than in the main memory. To further optimize the performance of the computing system, the engineer decides to explore various cache mapping techniques. Which of the following cache mapping techniques is NOT typically used in computer architecture for cache memory management? A) Direct-mapped cache B) Associative-mapped cache C) Sector-mapped cache D) Random-mapped cache

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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A memory system has a 32 KB byte-addressable main memory and a 1 KB cache where each block contains 16 bytes. Determine the format of the address in each of the cache organizations. In each case list the address fields and the width of each field.a) Direct-mapped cacheb) Fully-associative cachec) 4-way set-associative cache
Cache Performance Please answer the following questions regarding average memory access time (AMAT). a. If a specific cache design has 2% miss rate for a set of benchmarks with a hit latency of 20 cycles and a miss penalty of 200 cycles. What is the AMAT for this cache? b. If another cache design has 5% miss rate for the same set of benchmarks with a hit latency of 13 cycles and a miss penalty of 200 cycles. What is the AMAT for this cache? c. Which cache design is better?
Describe the significance of cache coherence protocols (e.g., MESI) in maintaining data consistency in multi-core processor systems.
Explain what a write-through cache modification and a write-back cache modification are, how they function in shared memory systems, and the pros and downsides of utilising either method. Write-through cache modifications and write-back cache modifications both modify the write-through cache.
QUESTION 9 1. If a given memory address for a byte addressable machine is found in a cache that uses a 128 byte cache line size, the least significant 8 bits in the memory address will be used to select the byte(s) in the cache line to work with. True False QUESTION 10 1. SRAM memory is used predominately in: C SRAM memory is used predominately in: C motherboard main memory C BIOS PROM memory C SD card memory devices C CPU on-chip cache memory
The ability to freely associate data items is the primary characteristic that distinguishes a fully associative cache from a directly mapped cache. This ability is the major distinction between the two types of caches.
A cache designer wishes to enhance the size of a 4 KiB physically labeled, virtually indexed cache. Is it feasible to create a 16 KiB direct-mapped cache with the page size mentioned above, assuming two words per block? How would the designer expand the cache's data size?
Explain the differences between a write-through cache change and a write-back cache modification, how they function in shared memory systems, and the advantages and disadvantages of utilizing either method.
Since both cache memory and RAM use transistors as their primary structural component, the question naturally arises as to why we need cache memory when we already have RAM (Random Access Memory) as a volatile memory. This is due to the fact that cache memory and RAM both use transistors as their primary component. This is because both cache memory and RAM employ transistors as their fundamental structural component, which explains why this is the case. Is it feasible to use a single form of memory for all of the computer's many diverse uses, or are many types of memory necessary for the computer to function properly?
Question 4 Given a computer with a memory system having a30_bit address, a cache consisting of 1024 blocks each is 8 words. For the following cache types: Direct Mapped (DM), Fully_ associative (FA), Two_way set associative (2_way), Four_way set associative (4_way), Eight_way set associative (8_way), calculate the following values as specified. (Use paper and pencil to do needed calculations and write only the final answer in the given blank space). 1) 4_way: The size of the index field =Blank 1bits 2) 8_way: The size of the index field =Blank 2bits 3) DM: The size of the index field = Blank 3bits 4) 2_way: The size of the index field =Blank 4bits 5) The size of the offset field = Blank 5bits 6) 4_way: The size of the tag field =Blank 6bits 7) 8_way: The size of the tag field =Blank 7bits 8) DM: The size of the tag field =Blank 8bits 9) 2_way: The size of the tag field =Blank 9bits 10) FA: The size of the tag field =Blank 10bits
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