Backup and Recovery MCQs in DBMS

By: Prof. Dr. Fazal Rehman Shamil | Last updated: September 23, 2024

1. What is the primary purpose of database backup?
   a) To improve database performance
   b) To restore the database to a previous state in case of failure or data loss
   c) To optimize SQL queries
   d) To manage user access controlAnswer: b) To restore the database to a previous state in case of failure or data loss
2. Which type of backup involves copying all the data in the database, regardless of previous backups?
   a) Incremental Backup
   b) Differential Backup
   c) Full Backup
   d) Log BackupAnswer: c) Full Backup
3. In which backup type are only the changes made since the last backup saved?
   a) Full Backup
   b) Differential Backup
   c) Incremental Backup
   d) Snapshot BackupAnswer: c) Incremental Backup
4. Which backup strategy involves making a backup of the data since the last full backup, but not the incremental backups?
   a) Incremental Backup
   b) Differential Backup
   c) Full Backup
   d) Log BackupAnswer: b) Differential Backup
5. What is a transaction log backup?
   a) A backup of all the data in the database
   b) A backup of only the changes to the database since the last log backup
   c) A backup of the database schema
   d) A backup of the database’s transaction logs to enable point-in-time recoveryAnswer: d) A backup of the database’s transaction logs to enable point-in-time recovery
6. What does the term “point-in-time recovery” refer to?
   a) Restoring the database to the state it was in at a specific point in time
   b) Restoring only the schema of the database
   c) Recovering data from a backup made yesterday
   d) Restoring the database to the most recent backupAnswer: a) Restoring the database to the state it was in at a specific point in time
7. Which backup strategy requires the least amount of storage space and backup time?
   a) Full Backup
   b) Differential Backup
   c) Incremental Backup
   d) Mirror BackupAnswer: c) Incremental Backup
8. What is the primary advantage of a differential backup over a full backup?
   a) It provides a complete backup of the database
   b) It is faster to perform and requires less storage space compared to a full backup
   c) It allows for point-in-time recovery
   d) It is more secure than full backupsAnswer: b) It is faster to perform and requires less storage space compared to a full backup
9. Which of the following backup methods is typically used to protect against data loss due to user errors or system crashes?
   a) Full Backup
   b) Incremental Backup
   c) Differential Backup
   d) Log BackupAnswer: a) Full Backup
10. What is the primary purpose of a backup strategy that includes offsite backups?
    a) To ensure faster recovery times
    b) To reduce backup storage costs
    c) To protect against data loss due to physical damage or theft at the primary site
    d) To enhance database performanceAnswer: c) To protect against data loss due to physical damage or theft at the primary site
11. What does “backup rotation” refer to?
    a) The process of rotating backup media on a regular basis
    b) The frequency of performing backups
    c) The process of restoring data from multiple backup sets
    d) The order in which backups are performedAnswer: a) The process of rotating backup media on a regular basis
12. Which type of backup involves creating a snapshot of the database at a particular moment in time?
    a) Full Backup
    b) Differential Backup
    c) Incremental Backup
    d) Snapshot BackupAnswer: d) Snapshot Backup
13. What is the main drawback of relying solely on incremental backups?
    a) They are slower to restore compared to full backups
    b) They require more storage space than full backups
    c) They are less secure than full backups
    d) They require restoration of the last full backup and all subsequent incremental backupsAnswer: d) They require restoration of the last full backup and all subsequent incremental backups
14. Which backup type is used to ensure that all committed transactions are saved for recovery purposes?
    a) Full Backup
    b) Incremental Backup
    c) Log Backup
    d) Differential BackupAnswer: c) Log Backup
15. What is a “backup window”?
    a) The time frame during which backups are scheduled to be performed
    b) The time required to restore data from backups
    c) The time when backup data is archived
    d) The period during which backups are validatedAnswer: a) The time frame during which backups are scheduled to be performed

 

More MCQs Of Database Systems

1. Database Models MCQs in DBMS
   1. Hierarchical model MCQs in DBMS
   2. Network model MCQs in DBMS
   3. Relational model MCQs in DBMS
   4. Object-oriented model MCQs in DBMS
   5. NoSQL databases MCQs in DBMS
2. Relational Database Model MCQs in DBMS
   1. tables, attributes, tuples, and relations MCQs in DBMS
   2. Primary keys and foreign keys MCQs in DBMS
   3. Integrity constraints MCQs in DBMS
3. SQL (Structured Query Language) MCQs in DBMS
   1. Data Definition Language (DDL) MCQs in DBMS
   2. Data Manipulation Language (DML) MCQs in DBMS
   3. Data Control Language (DCL) MCQs in DBMS
   4. Transaction Control Language (TCL) MCQs in DBMS
   5. Advanced SQL queries and functions MCQs in DBMS
4. Database Design MCQs in DBMS
   1. Entity-Relationship (ER) modeling MCQs in DBMS
   2. Extended ER modeling MCQs in DBMS
   3. Normalization and normal forms (1NF, 2NF, 3NF, BCNF) MCQs in DBMS
   4. Denormalization MCQs in DBMS
5. Database Management System Architecture MCQs in DBMS
   1. Three-schema architecture (external, conceptual, internal) MCQs in DBMS
   2. Data independence MCQs in DBMS
   3. DBMS components and functions MCQs in DBMS
6. Storage and File Structure MCQs in DBMS
   1. Data storage on physical media MCQs in DBMS
   2. File organization and access methods MCQs
   3. Indexing (B-trees, hash indexing) MCQs in DBMS
   4. RAID technology MCQs in DBMS
7. Query Processing and Optimization MCQs in DBMS
8. Database Transaction Management MCQs in DBMS
   1. ACID properties (Atomicity, Consistency, Isolation, Durability) MCQs in DBMS
   2. Transaction states and lifecycle MCQs in DBMS
   3. Concurrency control techniques (locking, timestamping, multiversion) MCQs in DBMS
   4. Deadlock detection and resolution MCQs in DBMS
9. Database Security and Authorization MCQs in DBMS
   1. Authentication and authorization mechanisms MCQs in DBMS
   2. Data encryption techniques MCQs in DBMS
   3. Role-based access control MCQs in DBMS
   4. SQL injection prevention MCQs in DBMS
10. Backup and Recovery MCQs in DBMS
    1. Backup types and strategies MCQs in DBMS
    2. Recovery techniques (log-based, shadow paging) MCQs in DBMS
    3. Disaster recovery planning MCQs in DBMS
11. Distributed Databases MCQs in DBMS
    1. Distributed database architecture MCQs MCQs in DBMS
    2. Data fragmentation, replication, and allocation in DBMS
    3. Distributed query processing MCQs in DBMS
    4. Consistency models and protocols MCQs in DBMS

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