When is it usually the hardest to recover data?Question 9Select one:a.When you accidentally deleted a fileb.When you formatted the storage mediumc.When the storage medium got destroyed by fired.When the storage medium got destroyed by watere.When the storage medium malfunctioned due to age

Question20Max. score: 3.00Which of the following best describes what data recovery is?It requires the use of a linux- based machine in order to retrieve files which have been misplaced in a computerIt is when an external hard drive or a flash drive is used to backup data to prevent lossIt refers to the act of recovering data which has been lost, corrupted or deletedIt refers to when data is purposely or accidentally deleted

In digital forensics, which technique involves reconstructing deleted files from unallocated space on a storage device?1 pointA) Disk imagingB) File carvingC) Memory analysisD) Log analysis

A user accidentally deletes an important file from their computer. What is the most likely cause of this data loss?1.0 MarksMalware attackHuman errorHardware failureNatural disasterSoftware corruption

make the answer based on this information i provide: Physical integrity It deals with challenges associated with correctly storing and fetching the data itself. Challenges with physical integrity may include Electromechanical faults Design flaws Material fatigue Corrosion Power outages Natural disasters Acts of war and terrorism Other special environmental hazards such as ionizing radiation, extreme temperatures, pressures and g-forces. Ways of ensuring physical integrity includes Redundant hardware (two or more hardware doing the same thing) An uninterruptible power supply Radiation hardened chips Error-correcting memory Use of a clustered file system Using file systems that employ block level checksums such as zfs, Storage arrays that compute parity calculations such as exclusive Use a cryptographic hash function Having a watchdog timer on critical subsystems. Physical integrity often makes extensive use of error detecting algorithms known as error-correcting codes. Human-induced data integrity errors are often detected through the use of simpler checks and algorithms, such as the Damm algorithm or Luhn algorithm.

Which of the following scenarios may lead to an irrecoverable error in a database system?A transaction reads a data item after it is written by a committed transactionA transaction writes a data item after it is read by an uncommitted transactionA transaction reads a data item after it is written by an uncommitted transactionA transaction reads a data item after it is read by an uncommitted transaction