LZT4C_522

What material was traditionally used as a substrate in magnetic disks?

• Glass

• Silicon

• Aluminum or aluminum alloy

• Copper

Which of the following is NOT a benefit of glass substrates in magnetic disks?

• Improved magnetic film surface uniformity

• Reduced weight compared to aluminum

• Better resistance to shock and damage

• Support for lower fly heights

What is the primary mechanism used to write data onto a magnetic disk?

• Laser beam engraving

• Conducting coil (write head) producing a magnetic field

• Pressing patterns onto the disk surface

• Electrical pulses generating heat

Which type of read head is used in contemporary rigid disk systems?

• Single head for both reading and writing

• Magnetoresistive (MR) sensor-based read head

• Optical read head

• Magnetic tape read head

What is the primary advantage of using Constant Angular Velocity (CAV) for disk rotation?

• Higher data density on inner tracks

• Direct addressing of data blocks by track and sector

• Faster data transfer speeds

• Increased storage capacity

What is the purpose of dividing a disk surface into multiple zones in Multiple Zone Recording (MZR)?

• To reduce manufacturing costs

• To maximize storage capacity by approximating equal bit density per track

• To improve rotational speed

• To allow for single-sided disk usage

Which sector format improvement is introduced in the Advanced Format standard?

• Increased sector size to 4096 bytes

• Reduced ECC requirements

• Elimination of control data

• Increased gap between sectors

What term is used to describe all tracks of the same relative position on multiple platters in a disk drive?

• Zone

• Cylinder

• Sector

• Cluster

What distinguishes Winchester heads from traditional rigid disk heads?

• Larger air gaps

• Contact with the disk surface

• Operation closer to the disk surface with aerodynamic support

• Use in nonremovable disks only

Why is it desirable for a disk head to be positioned closer to the platter surface?

• To reduce manufacturing costs

• To allow narrower tracks and greater data density

• To improve air pressure dynamics

• To simplify disk formatting