Cache memory is placed between the CPU and primary memory in order to:
AIncrease the total storage capacity of the machine
BSpeed up the CPU by holding frequently used data
CProvide permanent storage for the user's own files
DConvert analog signals into digital data for the CPU
Answer & Solution
Correct answer: B. Speed up the CPU by holding frequently used data
1. RAM is faster than secondary storage but still slower than the processor itself.
2. Waiting on RAM would force the CPU to slow down.
3. A very high speed memory called cache is therefore placed between the CPU and primary memory.
4. It stores copies of data from frequently accessed primary memory locations, cutting the average access time.
5. Capacity (A) is the job of secondary storage and conversion (D) is the job of a modem.
_Source: NCERT Computer Science Class 11, Ch 1 'Computer System', S1.3.2 Types of Memory_
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