Question

Let b be the number of block transfers from disk,s be the number of seeks, tb be time to transfer one block and ts be the time for one seek . we evaluate cost as
cost = b * tb + s * ts
What is this cost known as?
a)) CPU cost
b) Network Cost
c) Query Cost
d) Set up Cost

Answer 1

Hlo frnds
Answer of this question is b

Answer 2

The cost is known as b) Network Cost.

Explanation:

The cost for the given expression cost = b * tb + s * ts is Network cost. When there is a number of block transfers, number of seeks, time that is required to transfer the blocks and the time needed to seek is involved in Network cost.

CPU cost does not involve the transfer time of the block, hence, it is Network cost and not Query cost or setup cost.