MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Expert-Verified Answer. The correct answer is word transfer. The transfer between CPU and Cache is word transfer. The word that is transmitted in the medium of the memory data bus is between the CPU and the cache is known as word transfer.

Detailed explanation-2: -memory, called cache, is used between CPU and main memory to improve performance by reducing the data access time as shown is Figure 2 (b). Data between CPU and cache is transferred as data object and between cache and main memory as block as shown in Figure 2 (c).

Detailed explanation-3: -Blocks of the cache are grouped into sets, consisting of n blocks, and the mapping allows a block of the main memory to reside in any block of a specific set. It is also called n-way set associative mapping.

Detailed explanation-4: -In summary, we must subdivide data into blocks because, we cannot treat all the data as one lump sum (hardware wise at least), and, treating all data as individual bits is also too cumbersome. So, we chunk or group data into blocks as appropriate for various levels of hardware to deal with in parallel.

Detailed explanation-5: -The transfer between CPU and Cache is Best explanation: The transfer is a word transfer. In the memory subsystem, word is transferred over the memory data bus and it typically has a width of a word or half-word.