Clear your concepts with PostgreSQL-Essentials Questions Before Attempting Real exam [Q35-Q54]

Clear your concepts with PostgreSQL-Essentials Questions Before Attempting Real exam

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EnterpriseDB PostgreSQL-Essentials Exam Syllabus Topics:

Topic	Details
Topic 1	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 2	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 3	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 4	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.
Topic 5	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 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	Fundamental SQL: This section of the exam measures the skills of Database Developers and covers foundational SQL concepts, including queries, joins, and data manipulation. It ensures that candidates can efficiently retrieve, update, and manage data within relational databases.
Topic 8	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.

 

NEW QUESTION # 35
You want to take a data-only dump of the edbstore database, disable all triggers for faster restore, and use the INSERT command instead of COPY. Which pg_dump command options should you use?

• A. --data-only --inserts
• B. -a --copy --disable-triggers
• C. -a --inserts --disable-triggers
• D. -d --inserts --disable-triggers

Answer: C

NEW QUESTION # 36
Which psql meta-command is used to describe a table including its structure, columns, and constraints?

• A. \describe tablename
• B. \d tablename
• C. \dt tablename
• D. \show tablename

Answer: B

NEW QUESTION # 37
Which configuration parameter controls the amount of memory allocated for shared buffers?

• A. cache_size
• B. shared_buffers
• C. buffer_memory
• D. memory_buffers

Answer: B

NEW QUESTION # 38
Which command displays the current search path in PostgreSQL?

• A. GET search_path;
• B. \path
• C. SELECT search_path;
• D. SHOW search_path;

Answer: D

NEW QUESTION # 39
Which PostgreSQL backup utility can create backups in custom compressed format?

• A. psql
• B. pg_restore
• C. pg_dump with -Fc option
• D. pg_basebackup

Answer: C

NEW QUESTION # 40
You want to configure your cluster to run in archive mode for Point-in-Time Recovery. Which parameter must you set in postgresql.conf?

• A. archiving = on
• B. wal_archive = on
• C. backup_mode = on
• D. archive_mode = on

Answer: D

NEW QUESTION # 41
Which psql command toggles the display of tuples only (without column headers)?

• A. \x
• B. \t
• C. \h
• D. \a

Answer: B

NEW QUESTION # 42
In PostgreSQL, which system catalog stores information about databases?

• A. pg_tables
• B. information_schema.databases
• C. pg_database
• D. pg_class

Answer: C

NEW QUESTION # 43
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 # 44
You have created a database user named edbuser with password 'password'. Which command grants connection rights to the edbstore database for user edbuser?

• A. GRANT ALL ON DATABASE edbstore TO edbuser;
• B. GRANT LOGIN ON DATABASE edbstore TO edbuser;
• C. GRANT ACCESS ON DATABASE edbstore TO edbuser;
• D. GRANT CONNECT ON DATABASE edbstore TO edbuser;

Answer: D

NEW QUESTION # 45
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 # 46
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 # 47
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 # 48
You need to take a backup of only the edbuser schema from the edbstore database. Which pg_dump option should you use?

• A. --schema edbuser
• B. -s edbuser
• C. Both B and C
• D. -n edbuser

Answer: C

NEW QUESTION # 49
What is the purpose of shared_buffers configuration parameter in PostgreSQL?

• A. To control WAL buffer size
• B. To set the amount of memory for sorting
• C. To set connection pool size
• D. To determine memory for caching data from disk

Answer: D

NEW QUESTION # 50
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 # 51
You need to take a full online base backup of your cluster using pg_basebackup. Which option specifies the output directory?

• A. --output directory
• B. -d directory
• C. -o directory
• D. -D directory

Answer: D

NEW QUESTION # 52
Which of the following system functions can be used to track the status of the vacuum process?

• A. pg_stat_vacuumdb
• B. pg_stat_vacuum
• C. pg_stat_user_vacuum
• D. pg_stat_progress_vacuum

Answer: D

NEW QUESTION # 53
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 # 54
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