PrepSnap logoPrepSnap
Pass

Question

1.
2.
3.
4.
Answer (Detailed Solution Below)

Option 3 : Overlapping shingled tracks force the drive's internal garbage collection to relocate data unpredictably, so deleted clusters may be rewritten without host action

Advertisement

Detailed Solution

सही उत्तर Overlapping shingled tracks force the drive's internal garbage collection to relocate data unpredictably, so deleted clusters may be rewritten without host action है।

Key Points
Helpful?
PrepSnapprepsnap.in • Part -A

Question:

Deleted-file recovery on shingled magnetic recording (SMR) hard disks is notably less reliable than on conventional disks. Why? / शिंगल्ड मैग्नेटिक रिकॉर्डिंग (SMR) हार्ड डिस्क पर डिलीट-फाइल रिकवरी पारंपरिक डिस्क की तुलना में कम विश्वसनीय है। क्यों?

1.
SMR disks encrypt deleted sectors with a per-disk key
2.
SMR disks have no unallocated space at all
3.
Overlapping shingled tracks force the drive's internal garbage collection to relocate data unpredictably, so deleted clusters may be rewritten without host action
4.
SMR disks store all metadata in volatile cache that is lost on deletion

Correct Answer: Overlapping shingled tracks force the drive's internal garbage collection to relocate data unpredictably, so deleted clusters may be rewritten without host action

Because tracks overlap, any write can trigger the drive-managed relocation of neighboring data, silently overwriting the very unallocated regions recovery depends on. / ट्रैक ओवरलैप होने से कोई भी राइट पड़ोसी डेटा के स्थानांतरण को ट्रिगर कर सकता है, जिससे रिकवरी-योग्य क्षेत्र चुपचाप ओवरराइट हो जाते हैं। Option (a) is the trap — SMR is a recording geometry, not an encryption scheme.

Downloaded from PrepSnap (prepsnap.in)