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Filesystem Recovery Course - File Storage Basics Test
Check optional properties for a file
content
data and time of file creation
access rights
name
size
file extension
How does deduplication work?
a filesystem compresses data before writing it to the disk
a filesystem monitors that exactly one copy of each data block is stored
a filesystem monitors that exactly one copy of each file metadata block is stored
a filesystem monitors that no more than two copies of each data block is stored
What is fragmentation?
when a file is stored in several non-contiguous fragments
when two files have identical fragments
What is a minimum unit of disk space a physical device operates with?
sector
chunk
stripe
cluster
A filesystem, if possible, tries to allocate clusters sequentially
false
true
Check what makes carving impossible
deduplication
fragmentation
journaling
checksums
copy-on-write
compression
sparse storage
What is carving?
discovering files by searching the disk by file names
discovering files by searching the disk by file hashes
discovering files by searching the disk by file header signatures
What is a compressed file?
a file containing zeros which are not actually stored on the disk
a file containing fragments stored on disk in compressed form
a file consisting of more than one fragment
a file containing more than two identical blocks
What is an alternative name for cluster?
block
stripe
chunk
sector
Check filesystem features which facilitate data recovery
compression
journaling
checksums
copy-on-write
fragmentation
deduplication
Next lesson - File Metadata
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