UGC NET CSE | December 2014 | Part 3 | Question: 51

Question

Consider an imaginary disk with $40$ cylinders. A request come to read a block on cylinder $11$. While the seek to cylinder $11$ is in progress, new requests come in for cylinders $1, 36, 16, 34, 9$ and $12$ in that order. The number of arm motions using shortest seek first algorithm is

• A. $111$ ​
• B. $112$ 
• C. $60$
• D. $61$ 

Answer 1

11-12-9-16-1-34-36 sequence of access..

So 1+3+7+15+33+2=61

Comments

Can you please  tell me the solution  in detail.