When a computer needs a piece of information, does it immediately perform the memory fetch operation? If not, what does it do?
What will be an ideal response?
When the computer needs a piece of information, it does not immediately do the memory fetch operation. First, the computer looks in cache memory to see whether the information is there. If it is, then the computer can access it at a higher speed of the cache. Second, if the desired information is not in the cache, then it accesses it from RAM at the slower speed, using the fetch operation. Finally, the data just fetched is copied into the cache along with the appropriate immediately following memory locations. If the cache is full, then some of the older items that have not been recently accessed are discarded. (The assumption is that they will not be needed again for a while.)
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A ________ appears at the tip of a callout
A) red triangle B) red square C) yellow diamond D) yellow circle
The ________ function returns the number of fields that have data entered in a particular column but ignores null values
Fill in the blank(s) with correct word
It is possible to use repeaters for analog signals.
Answer the following statement true (T) or false (F)
Figure WDX 4-1
What type of filter is being created in the accompanying figure?
A. Only records with Miss Young as the teacher will be included in the merge B. Only records with Miss Young as the teacher will be excluded C. Only the records with a teacher field will be included in the merge D. On the records with Equal to in the teacher field will be included in the merge