[Jun 27, 2026] PostgreSQL-Essentials Free Exam Questions with Quality Guaranteed [Q35-Q57]

[Jun 27, 2026] PostgreSQL-Essentials Free Exam Questions with Quality Guaranteed

 PostgreSQL-Essentials Free Exam Files Downloaded Instantly

EnterpriseDB PostgreSQL-Essentials Exam Syllabus Topics:

Topic	Details
Topic 1	Database Maintenance: This section of the exam measures the skills of Database Administrators and covers maintenance operations such as updates, indexing, and performance optimization. The focus is on ensuring long-term database efficiency, integrity, and minimal downtime.
Topic 2	Disaster Recovery: This section of the exam measures the skills of IT Infrastructure Managers and emphasizes planning and executing disaster recovery procedures. It ensures candidates can design recovery plans to restore operations quickly and minimize data loss after catastrophic events.
Topic 3	Backup And Recovery Strategies: This section of the exam measures the skills of Database Administrators and focuses on developing an understanding of essential backup and recovery methods. It evaluates the ability to design, implement, and manage strategies that ensure data protection and system continuity in case of unexpected failures or data loss scenarios.
Topic 4	Database Security: This section of the exam measures the skills of Security Analysts and focuses on access control, encryption, and user authentication techniques. It evaluates the candidate’s ability to protect sensitive data and maintain compliance with security standards.
Topic 5	Database Clusters: This section of the exam measures the skills of System Engineers and covers the principles of clustering for performance and fault tolerance. It evaluates candidates’ ability to manage clustered environments, ensure high availability, and maintain data consistency across nodes.
Topic 6	Database Objects and Hierarchy: This section of the exam measures the skills of Database Developers and includes understanding tables, views, indexes, and their relationships within a database structure. It assesses the ability to manage and organize objects in a logical hierarchy for efficient data access.
Topic 7	Creating and Managing Databases: This section of the exam measures the skills of Database Developers and focuses on creating, configuring, and maintaining databases. It assesses understanding of database lifecycle management, including setup, schema creation, and performance adjustments.
Topic 8	Backup and Recovery Tools Overview: This section of the exam measures the skills of System Engineers and covers the use of various backup and recovery tools, including their functionality, compatibility, and configuration. It focuses on selecting appropriate tools based on database type, size, and organizational recovery objectives.

 

NEW QUESTION # 35
PostgreSQL supports SQL dump backup. You have configured a nightly backup of a database in plain SQL dump format. Due to database corruption, you need to restore your database using the SQL dump backup.
Which of the following commands can be used to restore a SQL dump?

• A. psql -f sqldumpfilename --tuples -d databasename -U username
• B. psql -f sqldumpfilename -quiet -d databasename -U username
• C. psql -f sqldumpfilename --all -d databasename -U username
• D. psql -f sqldumpfilename -1 -d databasename -U username

Answer: D

NEW QUESTION # 36
You want to set the maximum time to complete client authentication to 10 seconds. Which parameter should you configure?

• A. authentication_timeout = 10s
• B. client_timeout = 10s
• C. connection_timeout = 10s
• D. auth_timeout = 10s

Answer: A

NEW QUESTION # 37
You want to set the effective cache size for indexes to 512MB. Which parameter should you configure?

• A. effective_cache_size = 512MB
• B. shared_cache = 512MB
• C. cache_size = 512MB
• D. index_cache = 512MB

Answer: A

NEW QUESTION # 38
Which psql meta-command is used to list all databases in the cluster?

• A. Both A and B
• B. \l
• C. \databases
• D. \list

Answer: A

NEW QUESTION # 39
You are connected to a database in PostgreSQL using the psql tool. Which of the following commands can be used to view the cluster data directory?

• A. SHOW DATA_DIRECTORY;
• B. SHOW DIRECTORY;
• C. SELECT data_dir FROM pg_settings;
• D. SELECT server_dir FROM pg_settings;

Answer: A

NEW QUESTION # 40
Which configuration parameter limits the total number of connections available for your database cluster?

• A. superuser_reserved_connection
• B. max_connections
• C. log_connection
• D. tcp_keepalives_count

Answer: B

NEW QUESTION # 41
Which system view provides real-time information about currently active sessions and running queries?

• A. pg_current_queries
• B. pg_stat_activity
• C. pg_sessions
• D. pg_active_sessions

Answer: B

NEW QUESTION # 42
You want to view all available functions in the current database using psql. Which command should you use?

• A. \f
• B. \df
• C. \functions
• D. \fn

Answer: B

NEW QUESTION # 43
Autocommit occurs in which of the following situations?

• A. All DML statements
• B. None of the above
• C. All DDL statements
• D. On DML and DDL statements

Answer: C

NEW QUESTION # 44
In PostgreSQL, which view provides information about currently running queries?

• A. pg_current_queries
• B. pg_stat_activity
• C. pg_running_queries
• D. pg_active_sessions

Answer: B

NEW QUESTION # 45
You need to reclaim storage occupied by dead tuples in the customers table. Which command should you use?

• A. REINDEX customers;
• B. VACUUM customers;
• C. CLUSTER customers;
• D. ANALYZE customers;

Answer: B

NEW QUESTION # 46
Which parameter sets the number of autovacuum worker processes?

• A. autovacuum_workers
• B. max_autovacuum_workers
• C. autovacuum_max_workers
• D. vacuum_workers

Answer: C

NEW QUESTION # 47
Which psql meta-command is used to display all roles and their attributes?

• A. \dr
• B. \du
• C. \roles
• D. \users

Answer: B

NEW QUESTION # 48
You need to restore a database from a compressed format backup file created with pg_dump -Fc option.
Which utility should you use?

• A. psql
• B. pg_restore
• C. pg_dump
• D. pg_basebackup

Answer: B

NEW QUESTION # 49
SERIAL and IDENTITY columns can be used to add an auto-incrementing column in a Postgres table. Which of these two column types are SQL standard compliant?

• A. None
• B. Both
• C. Serial
• D. Identity

Answer: D

NEW QUESTION # 50
In PostgreSQL, what does VACUUM do?

• A. Optimizes query execution plans
• B. Reclaims storage occupied by dead tuples
• C. Creates database backups
• D. Compresses the database

Answer: B

NEW QUESTION # 51
You want to list all schemas in the current database using psql. Which command should you use?

• A. \schemas
• B. \ds
• C. \dn
• D. \ls

Answer: C

NEW QUESTION # 52
Which configuration file controls client authentication in PostgreSQL?

• A. pg_hba.conf
• B. postgresql.conf
• C. auth.conf
• D. pg_ident.conf

Answer: A

NEW QUESTION # 53
SERIAL and IDENTITY columns can be used to add an auto-incrementing column in a Postgres table. Which of these two column types are SQL standard compliant?

• A. None
• B. Serial
• C. Identity

Answer: C

NEW QUESTION # 54
Which psql meta-command displays the structure of a specific table including columns, types, and constraints?

• A. DESCRIBE tablename;
• B. \d tablename
• C. \dt tablename
• D. SHOW TABLE tablename;

Answer: B

NEW QUESTION # 55
You are working as a Postgres DBA. Due to an increase in transactional load on your Postgres instance, the server is experiencing frequent checkpoints. You have decided to increase the WAL area size. You have also decided to upgrade your database instance to PostgreSQL 13. While initializing your database cluster in PostgreSQL 13, you have decided to increase the WAL segment size. Which of the following options can be used with the initdb command to set a custom WAL segment size?

• A. No such option is available in PostgreSQL
• B. --wal-segsize
• C. --waldir
• D. -x

Answer: B

NEW QUESTION # 56
Which query displays the name and size of all databases in your cluster using a meaningful unit?

• A. SHOW DATABASE SIZE;
• B. SELECT datname, pg_size_pretty(pg_database_size(datname)) AS size FROM pg_database;
• C. SELECT name, size FROM pg_database;
• D. SELECT datname, pg_database_size(datname) FROM pg_database;

Answer: B

NEW QUESTION # 57
......

Q&As with Explanations Verified & Correct Answers: https://freetorrent.itpass4sure.com/PostgreSQL-Essentials-practice-exam.html