Database Backup and Recovery: Learn Backup and Recovery Strategies

Question 1

Which of the following options is not a common type of database backup?

Accepted Answer

Cluster backup

Answer

Full backup

Answer

Differential backup

Answer

Incremental backup

Question 2

Which recovery approach involves restoring the database to a specific past point in time?

Accepted Answer

Point-in-time recovery

Answer

Roll-forward recovery

Answer

Roll-back recovery

Answer

Cold backup recovery

Question 3

What is the primary function of a transaction log in a database system?

Accepted Answer

To record every change made to the database

Answer

To serve as a complete backup of the database in case of data loss

Answer

To optimize database performance by caching frequently accessed data

Answer

To ensure data integrity by implementing referential constraints

Question 4

What is a significant advantage of using a hot backup?

Accepted Answer

It enables backup operations without any system downtime

Answer

It reduces the time required to complete a backup

Answer

It guarantees improved data consistency

Answer

It enhances data security by encrypting backup files

Question 5

Which of these options is NOT a key factor to consider when selecting a database backup strategy?

Accepted Answer

Availability of technical documentation

Answer

Recovery time objectives

Answer

Financial costs associated with backups

Answer

Data retention requirements

Question 6

What is the main purpose of a recovery log in a database management system?

Accepted Answer

To track modifications made to the database

Answer

To provide a point-in-time view of the database

Answer

To store backup copies of critical data

Answer

To enable database replication

Question 7

Which recovery strategy involves restoring the database to a state just prior to a failure?

Accepted Answer

Point-in-time recovery

Answer

Log-based recovery

Answer

File-based recovery

Answer

Incremental recovery

Question 8

What is the primary benefit of using incremental backups over full backups?

Accepted Answer

Reduced backup time and storage requirements

Answer

Faster recovery in case of data loss

Answer

Increased data integrity

Answer

Improved performance during backups

Question 9

What is the primary goal of data replication in a database management system?

Accepted Answer

To improve data availability and fault tolerance

Answer

To enhance database performance

Answer

To simplify database administration

Answer

To reduce data storage requirements

Question 10

Which type of backup includes all data from the database at the time of backup?

Accepted Answer

Full backup

Answer

Differential backup

Answer

Incremental backup

Answer

Log backup

Question 11

Which of the following is not an advantage of database backups?

Accepted Answer

Improves database performance.

Answer

Protects against data loss in the event of failures or errors.

Answer

Enables recovery to a specific point in time.

Answer

Reduces the risk of data corruption.

Question 12

What is the purpose of a recovery point objective (RPO)?

Accepted Answer

To define the maximum acceptable amount of data loss in a disaster scenario.

Answer

To determine the frequency of database backups.

Answer

To specify the recovery time objective (RTO).

Answer

To establish the type of backup strategy to use.

Question 13

Which type of backup is suitable for continuous data protection?

Accepted Answer

Log shipping backup

Answer

Incremental backup

Answer

Differential backup

Answer

Full backup

Question 14

What is the difference between logical and physical backups?

Accepted Answer

Logical backups copy the logical structure of the database, while physical backups copy the physical files.

Answer

Physical backups copy the logical structure of the database, while logical backups copy the physical files.

Answer

Logical backups and physical backups are the same.

Answer

There is no difference between logical and physical backups.

Question 15

Which of the following is not a standard type of database backup?

Accepted Answer

Partial

Answer

Full

Answer

Differential

Answer

Incremental

Question 16

What is the primary objective of database recovery?

Accepted Answer

To restore the database to a consistent state after a failure

Answer

To protect the database from unauthorized access

Answer

To optimize database performance

Answer

To track changes made to the database

Question 17

Which of the following backup methods allows for continuous database operation without downtime?

Accepted Answer

Hot backup

Answer

Logical backup

Answer

Physical backup

Answer

Offline backup

Question 18

What is the purpose of a recovery point objective (RPO) in database recovery planning?

Accepted Answer

To define the maximum tolerable data loss in the event of a failure

Answer

To determine how long it takes to recover the database

Answer

To specify the type of backup to be used

Answer

To identify the personnel responsible for performing recoveries

Question 19

What is the primary mechanism used for performing incremental backups?

Accepted Answer

Change tracking

Answer

Database replication

Answer

File comparison

Answer

Log analysis

Question 20

What is the primary function of a redo log in database recovery?

Accepted Answer

To record database changes for recovery purposes

Answer

To restore deleted data

Answer

To improve transaction performance

Answer

To track user activity

Question 21

What is a key difference between a database checkpoint and a transaction commit?

Accepted Answer

A checkpoint ensures durability while a commit ensures atomicity

Answer

A commit ensures durability while a checkpoint ensures atomicity

Answer

A checkpoint occurs at the end of a transaction while a commit occurs at the beginning

Answer

A commit involves all data affected by a transaction while a checkpoint involves only the updated data

Question 22

Which action is vital for a comprehensive database disaster recovery plan?

Accepted Answer

Regularly verifying database backups

Answer

Establishing a reliable network infrastructure

Answer

Prioritizing software updates

Question 23

Which option is NOT a type of database backup?

Accepted Answer

Selective backup

Answer

Full backup

Answer

Incremental backup

Answer

Differential backup

Question 24

Which recovery technique leverages transaction logs to restore the database to a specific point in time?

Accepted Answer

Point-in-time recovery

Answer

Simple recovery

Answer

Full recovery

Answer

Bulk-logged recovery

Question 25

Which backup method involves creating an exact copy of the entire database?

Accepted Answer

Full backup

Answer

Incremental backup

Answer

Differential backup

Answer

Logical backup

Question 26

In the context of database recovery, a transaction log can be described as:

Accepted Answer

A chronological record of all database changes

Answer

A duplicate of the most recent database backup

Answer

A log of user actions

Answer

A backup of the database metadata

Question 27

How does the frequency of database backups affect the potential amount of data lost?

Accepted Answer

More frequent backups reduce data loss.

Answer

More frequent backups increase data loss.

Answer

Backup frequency does not affect data loss.

Question 28

Which database backup strategy involves creating regular copies of the database, capturing changes made since the last backup?

Accepted Answer

Incremental Backup

Answer

Differential Backup

Answer

Full Backup

Answer

Log Backup

Question 29

To safeguard encrypted database backups, which practice is essential?

Accepted Answer

Encrypting backups using industry-standard algorithms

Answer

Employing weak encryption algorithms

Answer

Storing encryption keys in unencrypted text files

Answer

Ignoring key management and rotation practices

Question 30

Which of the following is a physical database backup type that creates a copy of the entire database?

Accepted Answer

Full backup

Answer

Differential backup

Answer

Incremental backup

Answer

Transaction log backup

Question 31

What is the main purpose of maintaining a recovery log for a database?

Accepted Answer

To record all changes made to the database

Answer

To provide a point-in-time snapshot of the database

Answer

To perform database backups automatically

Answer

To store data in a compressed format

Question 32

Which recovery method allows you to restore the database to a specific point in time during the backup process?

Accepted Answer

Point-in-time recovery

Answer

Log-based recovery

Answer

Full recovery

Answer

Transaction recovery

Question 33

What is the primary advantage of using a cold backup over a hot backup?

Accepted Answer

Can be performed without interrupting database operations

Answer

More reliable

Answer

Faster to perform

Answer

Can be performed remotely

Question 34

What is the primary purpose of a disaster recovery plan for a database?

Accepted Answer

To provide a step-by-step guide for restoring the database in the event of a major failure or disaster

Answer

To monitor the database for potential threats

Answer

To provide a backup of the database in a secure location

Question 35

Which backup strategy involves creating multiple levels of database backups with varying retention periods?

Accepted Answer

Tiered backup

Answer

Incremental backup

Answer

Differential backup

Answer

Transaction log backup

Question 36

What is a significant benefit of using a database management system (DBMS) for database recovery?

Accepted Answer

Automated backup and recovery processes

Answer

Reduced storage requirements

Answer

Improved data quality

Question 37

What is the main role of a recovery log in database management?

Accepted Answer

To record all changes made to the database

Answer

To store the database schema

Answer

To back up transaction data

Answer

To monitor user activity

Question 38

Which recovery method allows you to restore a database to a specific point in time?

Accepted Answer

Point-in-time recovery

Answer

Bulk recovery

Answer

Simple recovery

Answer

Incremental recovery

Question 39

What is the initial step in performing a logical backup?

Accepted Answer

Dumping the database schema

Answer

Creating a compressed backup file

Answer

Restoring the database

Answer

Backing up transaction logs

Question 40

What is the purpose of establishing a recovery point objective (RPO)?

Accepted Answer

To define the acceptable amount of potential data loss

Answer

To identify the critical data

Answer

To plan for hardware upgrades

Answer

To determine the estimated time to recover from a failure

Question 41

Which factor is NOT typically considered when selecting a backup strategy?

Accepted Answer

Personal preferences

Answer

Data size

Answer

Security and compliance requirements

Answer

Recovery time objective (RTO)

Question 42

What is the primary goal of database recovery?

Accepted Answer

To restore the database to a consistent and usable state

Answer

To prevent future data loss

Answer

To identify the cause of a database failure

Answer

To improve database performance

Question 43

To restore a database to a particular point in time, which recovery method is utilized?

Accepted Answer

Point-in-time recovery

Answer

Rollback recovery

Answer

Forward recovery

Answer

Backward recovery

Question 44

Which command in SQL is used to create a full copy of the database?

Accepted Answer

BACKUP DATABASE

Answer

ROLLBACK DATABASE

Answer

TRUNCATE DATABASE

Answer

RESTORE DATABASE

Question 45

What is the primary use of a recovery log?

Accepted Answer

To record the sequence of changes made to the database

Answer

To optimize database performance

Answer

To prevent unauthorized access

Answer

To store backup copies of database

Question 46

In the context of standby databases, what is the difference between warm and hot standby configurations?

Accepted Answer

Warm standby is partially synchronized, while hot standby is fully synchronized with the primary database.

Answer

Warm standby surpasses hot standby in terms of speed.

Answer

Hot standby offers higher reliability compared to warm standby.

Question 47

Which practice is highly recommended for reliable database recovery?

Accepted Answer

Conduct regular testing of the recovery process

Answer

Limit backup frequency

Answer

Store backups on a single storage device

Answer

Minimize the number of utilized recovery logs

Question 48

In choosing a backup strategy, which aspect is not a relevant consideration?

Accepted Answer

Availability of cloud services

Answer

Significance of the data

Answer

Required storage capacity

Answer

Frequency of data modifications

Question 49

Which type of backup creates a copy of the entire database at a specific point in time, including all data and schema information?

Accepted Answer

Full Backup

Answer

Incremental Backup

Answer

Transaction Log Backup

Answer

Differential Backup

Question 50

What is the primary purpose of a database recovery plan?

Accepted Answer

To minimize data loss and ensure business continuity in case of a disaster.

Answer

To optimize database performance.

Answer

To enhance database security.

Question 51

Which recovery model provides the most granular level of recovery, allowing restoration to a specific point in time within a transaction?

Accepted Answer

Full Recovery Model

Answer

Bulk-Logged Recovery Model

Answer

No Recovery Model

Answer

Simple Recovery Model

Question 52

A database administrator performs a full backup every Sunday and differential backups every weekday. How often does the administrator need to restore the full backup to ensure a complete recovery?

Accepted Answer

Every Sunday

Answer

Every weekday

Answer

Every day

Answer

Only when a disaster occurs

Question 53

Which of the following is NOT a common strategy for ensuring database backup integrity?

Accepted Answer

Storing backups on the same server as the database.

Answer

Storing backups in a geographically separate location.

Answer

Using checksums to verify backup data integrity.

Question 54

What is the role of a recovery log in database recovery?

Accepted Answer

To track all database changes and facilitate point-in-time recovery.

Answer

To store data backups.

Answer

To enhance database security.

Question 55

Which of the following is a common technique for verifying database backup integrity?

Accepted Answer

Performing a test restore.

Answer

Using a data encryption tool.

Answer

Monitoring database performance.

Answer

Implementing a data masking strategy.

Question 56

What is the most important factor to consider when choosing a backup strategy for a database?

Accepted Answer

Recovery Time Objective (RTO) and Recovery Point Objective (RPO)

Answer

Cost of backup software.

Answer

Storage capacity available.