OS Disk Structures

Which of the following is not a part of Disk Structure?

• Platter
• Track
• Casette
• Sector

Tracks are divided into_______

• Paltters
• Sectors
• Cylinders
• ALL

If there are 30 Paltters, How many read/write heads will be there?

• 15
• 1
• 30
• 60

Time taken by head to reach the desired cylinder is called_____

• Transfer Time
• Rotational Latency
• Head Time
• Seek Time

SSTF stands for________

• Subject-Summary-Tape-File
• Simple-Seek-Time-First
• Shortest-Seek-Time-First
• Short-Small-Time-First

Consider disk queue with 98 183 37 122 14 124 65 67 & head at 53. Head movement to serve 1st request using FCFS?

• 54
• 45
• Can't say
• None of the Above

Consider disk queue with 98 183 37 122 14 124 65 67 & head at 53. Head movement to serve 1st request using SSTF?

• 12
• 16
• Can't say
• None of the Above

Which Disk scheduling is preferbale on larger loads

• FCFS
• C-SCAN
• SSTF
• ALL

Magnetic Disks and Optical Tapes come under________

• Primary Storage
• Secondary Storage
• Tertiary Storage
• None of the Above

Time taken by head to reach the desired Sector is called_____

• Transfer Time
• Rotational Latency
• Head Time
• Seek Time