Data and Database Administration problems
- 1. Which of the following could cause data to be unavailable?
Options- A. Data becoming lost or inaccurate
- B. The database server
- C. Planned database maintenance activities
- D. All of the above. Discuss
Correct Answer: All of the above.
- 2. Which of the following is the preferred way to recover a database after a transaction in progress terminates abnormally?
Options- A. Rollback
- B. Rollforward
- C. Switch to duplicate database
- D. Reprocess transactions Discuss
Correct Answer: Rollback
- 3. Which of the following is part of an administrative policy to secure a database?
Options- A. Authentication policies
- B. Limiting particular areas within a building to only authorized people
- C. Ensure appropriate responses rates are in external maintenance agreements
- D. All of the above. Discuss
Correct Answer: All of the above.
- 4. Performance analysis and tuning is which of the following?
Options- A. Undertaken one time at the time of a DBMS installation
- B. Undertaken one time at the time of the implementation of a new application
- C. Undertaken as an ongoing part of the backup of a database
- D. Undertaken as an ongoing part of managing a database Discuss
Correct Answer: Undertaken as an ongoing part of managing a database
- 5. Concurrency control is important for which of the following reasons?
Options- A. To ensure data integrity when updates occur to the database in a multiuser environment
- B. To ensure data integrity when updates occur to the database in a single-user environment
- C. To ensure data integrity while reading data occurs to the database in a multiuser environment
- D. To ensure data integrity while reading data occurs to the database in a single-user environment Discuss
Correct Answer: To ensure data integrity when updates occur to the database in a multiuser environment
- 6. Which of the following is the preferred way to recover a database after a system failure?
Options- A. Rollback
- B. Rollforward
- C. Switch to duplicate database
- D. Reprocess transactions Discuss
Correct Answer: Switch to duplicate database
- 7. Which of the following is true concerning open-source DBMS?
Options- A. Is free or nearly free database software whose source code is publicly available
- B. Is free or nearly free database software whose source code is not publicly available
- C. Is not competitive against PC-oriented packages and is fully SQL compliant
- D. Is competitive against PC-oriented packages and is not fully SQL compliant Discuss
Correct Answer: Is free or nearly free database software whose source code is publicly available
- 8. A shared lock allows which of the following types of transactions to occur?
Options- A. Delete
- B. Insert
- C. Read
- D. Update Discuss
Correct Answer: Read
- 9. If both data and database administration exist in an organization, the database administrator is responsible for which of the following?
Options- A. Data modeling
- B. Database design
- C. Metadata
- D. All of the above. Discuss
Correct Answer: Database design
- 10. Locking may cause which of the following problems?
Options- A. Erroneous updates
- B. Deadlock
- C. Versioning
- D. All of the above. Discuss
Correct Answer: Deadlock
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