EnterpriseDB
PostgreSQL-Essentials
PostgreSQL Essentials
Certification v13
Version: Demo
[ Total Questions: 10]
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Certs Exam
EnterpriseDB - PostgreSQL-Essentials
Question #:1
What is the purpose of the autovacuum parameter in PostgreSQL?
A. To manually run vacuum
B. To enable automatic vacuuming of tables
C. To compress database files
D. To backup data automatically
Answer: B
Question #:2
Which command in psql toggles between aligned and unaligned output mode?
A. \a
B. \t
C. \align
D. \format
Answer: A
Question #:3
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 --all -d databasename -U username
B. psql -f sqldumpfilename --tuples -d databasename -U username
C. psql -f sqldumpfilename -1 -d databasename -U username
D. psql -f sqldumpfilename -quiet -d databasename -U username
Answer: C
Question #:4
In PostgreSQL 13, which command is used to switch your connection to a different database in psql?
A. \connect dbname
B. USE dbname;
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Certs Exam
EnterpriseDB - PostgreSQL-Essentials
C. SWITCH dbname;
D. SET DATABASE dbname;
Answer: A
Question #:5
Autocommit occurs in which of the following situations?
A. All DML statements
B. All DDL statements
C. On DML and DDL statements
D. None of the above
Answer: B
Question #:6
In PostgreSQL, archiving can be enabled for hot backups. During recovery, all the archive logs can be played
on the restored backup and Point-in-Time Recovery can be performed. Which of the following parameters
directly influences Mean Time to Recovery and is also used to control the size of the WAL area?
A. wal_level
B. wal_size
C. checkpoint_timeout
D. max_wal_size
Answer: D
Question #:7
Which configuration parameter limits the total number of connections available for your database cluster?
A. log_connection
B. max_connections
C. tcp_keepalives_count
D. superuser_reserved_connection
Answer: B
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Question #:8
You want to check the current value of the max_connections parameter. Which SQL command should you
use?
A. SELECT max_connections;
B. SHOW max_connections;
C. GET max_connections;
D. DISPLAY max_connections;
Answer: B
Question #:9
Which command displays the current search path in PostgreSQL?
A. SELECT search_path;
B. SHOW search_path;
C. GET search_path;
D. \path
Answer: B
Question #:10
You want to allow up to 200 connected users in your PostgreSQL cluster. Which parameter should you
modify in postgresql.conf?
A. max_users = 200
B. max_connections = 200
C. connection_limit = 200
D. max_clients = 200
Answer: B
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