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