Here are 25 multiple-choice questions (MCQs) focused on the basic principles of data backup and recovery, along with their answers and explanations:
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. What is data backup?
- Deleting data permanently
- Copying data to another location for safekeeping
- Encrypting data
- Corrupting data intentionally
Data backup involves copying data to another location to ensure its safekeeping.
2. Why is data backup important?
- To increase storage space
- To make data accessible from anywhere
- To protect against data loss due to accidents, errors, or disasters
- To improve data security
Data backup is important to protect against data loss due to various factors.
3. What is the primary purpose of data recovery?
- To create additional copies of data
- To permanently delete data
- To restore lost or corrupted data
- To encrypt data
Data recovery is the process of restoring lost or corrupted data.
4. Which of the following is NOT a common method of data backup?
- Incremental backup
- Cloud backup
- Data deletion
- Full backup
Data deletion is not a method of data backup.
5. What is a full backup?
- Backing up only the most important data
- Backing up data to an external hard drive
- Backing up all data in a system regardless of whether it has changed
- Backing up data to the cloud
A full backup includes all data, regardless of changes.
6. What is an incremental backup?
- Backing up all data daily
- Backing up data only when it changes since the last backup
- Backing up data once a week
- Backing up data to an external device
Incremental backup backs up data that has changed since the last backup.
7. What is the term for the time it takes to recover data after a disaster or data loss event?
- Backup duration
- Recovery point objective (RPO)
- Backup frequency
- Data replication
Recovery point objective (RPO) is the time it takes to recover data.
8. What is data retention in the context of data backup?
- The process of permanently deleting data
- The duration for which backup copies of data are stored
- The process of copying data to a new location
- The encryption of data
Data retention refers to the duration for which backup copies of data are stored.
9. Which of the following is a characteristic of offsite backup?
- Data is stored in the same location as the original data
- Data is stored in a remote location separate from the original data
- Data is stored in the cloud
- Data is stored on external hard drives
Offsite backup involves storing data in a remote location separate from the original data.
10. What is the purpose of disaster recovery planning?
- To create regular data backups
- To prevent data loss
- To ensure business continuity in case of disasters or data loss events
- To encrypt data
Disaster recovery planning aims to ensure business continuity in case of disasters or data loss events.
11. What is a backup frequency?
- The time it takes to recover data
- How often data is backed up
- The duration of data retention
- The method of data backup
Backup frequency refers to how often data is backed up.
12. What is a backup archive?
- The process of creating incremental backups
- A storage device used for data backup
- A collection of older backup copies of data
- A full backup
A backup archive is a collection of older backup copies of data.
13. Which of the following is a benefit of cloud backup?
- Slower data access
- Reduced storage costs
- Limited data accessibility
- Local data storage only
Cloud backup often reduces storage costs.
14. What is data deduplication in the context of data backup?
- The process of encrypting data
- The process of removing duplicate copies of data to save storage space
- The process of creating full backups
- The process of data recovery
Data deduplication removes duplicate copies of data to save storage space.
15. What is the purpose of a backup verification process?
- To delete backup copies
- To ensure that backup copies are accessible
- To prevent data recovery
- To test and confirm the integrity of backup copies
Backup verification tests the integrity of backup copies.
16. What is data replication in the context of data backup?
- The process of deleting data
- The process of copying data to multiple locations in real-time
- The process of creating backup archives
- The process of encrypting data
Data replication involves copying data to multiple locations in real-time.
17. What is the term for the maximum amount of data loss that an organization can tolerate in a disaster or data loss event?
- Backup duration
- Recovery time objective (RTO)
- Backup frequency
- Data retention
Recovery time objective (RTO) is the maximum allowable data loss.
18. Which of the following is a recommended best practice for data backup security?
- Storing backup copies in the same location as the original data
- Not encrypting backup copies
- Regularly testing and monitoring backups
- Using simple and easily guessable passwords for backup access
Regularly testing and monitoring backups is a recommended best practice for security.
19. What is a data backup policy?
- A plan for creating a single backup copy of data
- A plan for permanently deleting data
- A set of guidelines and procedures for data backup and recovery
- A plan for data
A data backup policy is a set of guidelines and procedures for data backup and recovery.
20. What is a hot backup in the context of data backup methods?
- A backup created while the system is running and fully operational
- A backup stored in a location with a high temperature
- A backup stored in the cloud
- A backup created during system downtime
A hot backup is created while the system is operational.
21. Which of the following is a characteristic of cold backups?
- Backups created during system downtime
- Backups stored in a high-temperature environment
- Backups created continuously
- Backups created while the system is running
Cold backups are typically created during system downtime.
22. What is the purpose of versioning in data backup and recovery?
- To permanently delete backup copies
- To ensure backups are stored in the cloud
- To keep multiple versions of files over time
- To create full backups
Versioning keeps multiple versions of files over time in backup.
23. What is the term for a backup that includes both data and the system's configuration settings, allowing for a full system recovery?
- Bare-metal backup
- Cloud backup
- Incremental backup
- Full backup
A bare-metal backup includes data and system configuration for full system recovery.
24. What is a backup schedule?
- The process of creating a backup copy
- A plan for permanently deleting data
- A predetermined plan for when and how often backups are performed
- A backup archive
A backup schedule is a predetermined plan for when and how often backups are performed.
25. Which of the following is NOT a common location for storing backup copies of data?
- Onsite backup server
- Cloud storage
- External hard drive
- Primary production server
The primary production server is not typically used for storing backup copies of data.
