QuizApi - PostgreSQL Database Administration Quiz

Question 1

Correct Answers: 1/4

Which PostgreSQL configuration would you modify to optimize memory usage for sort operations?

shared_buffers

effective_cache_size

work_mem

maintenance_work_mem

Question 2

Correct Answers: 1/4

What is the recommended method to handle connection pooling in a high-traffic PostgreSQL application?

Increase max_connections

Create new connections for each request

Use PgBouncer in transaction pooling mode

Use application-level connection management

Question 3

Correct Answers: 1/4

Which backup strategy provides the fastest recovery time for a 1TB PostgreSQL database?

SQL dumps using pg_dump

Logical replication to standby

File system level backup with pg_basebackup plus WAL archiving

Regular CSV exports

Question 4

Correct Answers: 1/4

How would you efficiently track row changes in a PostgreSQL table for audit purposes?

Create triggers for INSERT, UPDATE, DELETE

Enable logical decoding

Use temporal tables with system_versioning

Query the WAL logs

Question 5

Correct Answers: 1/4

What is the most efficient way to remove bloat from a large PostgreSQL table without downtime?

Run VACUUM FULL

Recreate the table

Use pg_repack extension

Regular VACUUM

Question 6

Correct Answers: 1/4

Which monitoring metric best indicates potential performance issues in PostgreSQL?

Number of active connections

Cache hit ratio

Transaction ID wraparound

Number of dead tuples

Question 7

Correct Answers: 1/4

What is the best practice for managing sequence gaps in PostgreSQL?

Reset sequences regularly

Use triggers to fill gaps

Accept gaps as normal and unavoidable

Switch to UUID

Question 8

Correct Answers: 1/4

How can you prevent parameter injection attacks in PostgreSQL?

Escape all input manually

Filter input at application level

Use prepared statements with parameterized queries

Use stored procedures for all queries

Question 9

Correct Answers: 1/4

What is the most reliable way to handle database migrations in a zero-downtime environment?

Apply all changes during maintenance window

Restore from backup after migration

Use multi-phase migrations with backward compatibility

Create new database and switch over

Question 10

Correct Answers: 1/4

Which PostgreSQL extension would you use for automated partition management?

pg_partman

auto_partition

pg_partition

partition_manager

Question 11

Correct Answers: 1/4

What is the most efficient way to handle large-scale data archival in PostgreSQL?

Delete old data periodically

Move data to archive tables

Use partitioning with pg_partman and automatically detach old partitions

Export to files

Question 12

Correct Answers: 1/4

How would you implement high availability for a PostgreSQL cluster?

Master-slave replication

Manual failover scripts

Patroni with etcd for automated failover

Backup and restore

Question 13

Correct Answers: 1/4

What is the recommended way to handle long-running queries in PostgreSQL?

Increase statement_timeout

Split into smaller queries

Use cursor-based processing with DECLARE CURSOR

Run during off-peak hours

Question 14

Correct Answers: 1/4

Which approach provides the most reliable way to prevent transaction wraparound in PostgreSQL?

Regular VACUUM

Manual VACUUM FREEZE

Autovacuum with optimized settings for freeze age

Frequent database restarts

Question 15

Correct Answers: 1/4

What is the most efficient way to handle temporary data in PostgreSQL?

Create regular tables and delete data

Store in memory only

Use TEMPORARY tables with ON COMMIT DROP

Use materialized views

Question 1

Which PostgreSQL configuration would you modify to optimize memory usage for sort operations?

Question 2

What is the recommended method to handle connection pooling in a high-traffic PostgreSQL application?

Question 3

Which backup strategy provides the fastest recovery time for a 1TB PostgreSQL database?

Question 4

How would you efficiently track row changes in a PostgreSQL table for audit purposes?

Question 5

What is the most efficient way to remove bloat from a large PostgreSQL table without downtime?

Question 6

Which monitoring metric best indicates potential performance issues in PostgreSQL?

Question 7

What is the best practice for managing sequence gaps in PostgreSQL?

Question 8

How can you prevent parameter injection attacks in PostgreSQL?

Question 9

What is the most reliable way to handle database migrations in a zero-downtime environment?

Question 10

Which PostgreSQL extension would you use for automated partition management?

Question 11

What is the most efficient way to handle large-scale data archival in PostgreSQL?

Question 12

How would you implement high availability for a PostgreSQL cluster?

Question 13

What is the recommended way to handle long-running queries in PostgreSQL?

Question 14

Which approach provides the most reliable way to prevent transaction wraparound in PostgreSQL?

Question 15

What is the most efficient way to handle temporary data in PostgreSQL?

Finish Quiz