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Filesystem Recovery Course - File Storage Basics Test
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 an alternative name for cluster?
block
stripe
sector
chunk
How is a record storing file metadata and pointers to file content called in Linux?
group descriptor
directory
indirect block table
short form directory
inode
MFT record
What is carving?
discovering files by searching the disk by file hashes
discovering files by searching the disk by file names
discovering files by searching the disk by file header signatures
Check what makes carving impossible
journaling
deduplication
checksums
copy-on-write
fragmentation
sparse storage
compression
A filesystem, if possible, tries to allocate clusters sequentially
false
true
Check filesystem features which facilitate data recovery
journaling
compression
fragmentation
copy-on-write
deduplication
checksums
What is fragmentation?
when a file is stored in several non-contiguous fragments
when two files have identical fragments
What is a sparse file?
a file containing a compressed block
a file containing more than two identical blocks
a file containing zeros which are not actually stored on the disk
a file consisting of more than one fragment
What is a minimum unit of disk space a physical device operates with?
chunk
sector
stripe
cluster
Next lesson - File Metadata
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