ISC2 CC Full backup Practice Question
A company is evaluating backup strategies for its critical database. Which TWO of the following are correct statements about backup types?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A full backup copies all data regardless of change status.
Full backup copies all data regardless of change status, so A is correct. Differential backup copies data changed since the last full backup, so C is correct. Incremental backup copies data changed since the last backup of any type, making D incorrect. While incremental backups are often smaller than differential backups, this is not always true and the statement in E is too absolute; incremental backups can require more storage if many are taken. Restoring from a full backup is slower than from a differential backup because differential restore only needs the last full plus one differential, so B is wrong. Therefore, exactly two statements, A and C, are correct.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A full backup copies all data regardless of change status.
Why this is correct
Correct. A full backup copies all data regardless of change status.
- ✗
Restoring from a full backup is faster than restoring from a differential backup.
Why it's wrong here
Incorrect. Restoring from a full backup is generally slower than from a differential backup because the full backup contains all data.
- ✓
A differential backup copies data that has changed since the last full backup.
Why this is correct
Correct. A differential backup copies data that has changed since the last full backup.
- ✗
An incremental backup only copies data that has changed since the last full backup.
Why it's wrong here
Incorrect. An incremental backup copies data changed since the last backup of any type, not just the last full backup.
- ✗
Incremental backups require less storage space than differential backups.
Why it's wrong here
Incorrect. While incremental backups are often smaller than differential backups, this is not universally true and the statement is too absolute; therefore it is not a correct statement.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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