Understanding Cache Memory Mapping

Explain the difference between direct-mapped and fully associative cache.

• Direct-mapped cache is faster than fully associative cache due to its complex mapping system.

• Direct-mapped cache has a one-to-one mapping of memory blocks to cache lines, while fully associative cache allows any memory block to be placed in any cache line.

• Direct-mapped cache can store multiple memory blocks in one cache line, while fully associative cache has fixed mapping.

• Direct-mapped cache allows any memory block to be placed in any cache line, while fully associative cache has a one-to-one mapping.

What is cache memory mapping?

• Cache memory mapping is the technique of linking main memory addresses to cache memory locations.

• Cache memory mapping is the process of storing data in secondary storage.

• Cache memory mapping is the method of compressing files for faster access.

• Cache memory mapping refers to the organization of data in hard drives.

What role does cache memory play in computer architecture?

• Cache memory is used solely for graphics processing tasks.

• Cache memory improves processing speed by storing frequently accessed data and instructions for quick retrieval.

• Cache memory stores all data permanently for future use.

• Cache memory reduces the overall memory size of a computer system.

How does cache mapping affect system performance?

• Cache mapping is irrelevant to data storage efficiency.

• Cache mapping has no impact on system performance.

• Cache mapping affects system performance by influencing hit rates and data access speed.

• Cache mapping only affects power consumption.

Describe the concept of cache hit and cache miss.

• Cache hit: data found in cache; Cache miss: data not found in cache.

• Cache hit: data stored in memory; Cache miss: data retrieved from disk.

• Cache hit: data accessed quickly; Cache miss: data lost during retrieval.

• Cache hit: data processed successfully; Cache miss: data corrupted during transfer.

What is the purpose of a cache line?

• The purpose of a cache line is to compress data for storage efficiency.

• The purpose of a cache line is to store data permanently in memory.

• The purpose of a cache line is to manage network traffic between devices.

• The purpose of a cache line is to optimize data access speed by storing blocks of data in the cache.

How does the size of cache memory impact data retrieval speed?

• A smaller cache size increases data retrieval speed by storing more data.

• A larger cache size improves data retrieval speed by reducing access time to frequently used data.

• Increasing cache size slows down data retrieval due to more data to sift through.

• Cache memory size has no effect on data retrieval speed at all.

What are the advantages of using cache memory?

• The advantages of using cache memory include faster data access, reduced latency, improved overall system performance, and efficient use of CPU resources.

• Limited storage capacity and accessibility

• Increased power consumption and heat generation

• Slower data retrieval and processing times

The effectiveness of cache memory is primarily based on which property of programs? 

• Locality of reference

• memory localisation

• random access nature

• memory size

Which type of locality aims at designing a cache to store recently referenced data, assuming that the same data will be requested frequently again soon? 

• Only Spatial Locality

• Only Temporal Locality

• Both Temporal & Spatial

• none of the above