LCA Web Server & Database Administration 5

Question 1

Which Apache configuration file format is used in Debian-based systems to enable or disable sites?

Accepted Answer

Symlinks in /etc/apache2/sites-enabled/ managed by a2ensite/a2dissite

Answer

Debian-based systems use a2ensite to create symlinks from sites-available to sites-enabled, which Apache reads at startup.

Question 2

What is the purpose of the PostgreSQL pg_hba.conf file?

Accepted Answer

Controls client authentication methods and access rules

Answer

pg_hba.conf (host-based authentication) defines which hosts can connect to which databases as which users and by what authentication method.

Question 3

Which Nginx directive defines a named location block for internal redirects only?

Accepted Answer

location @name {}

Answer

A named location prefixed with @ (e.g., location @fallback) is only accessible via internal Nginx directives like try_files or error_page, not directly by clients.

Question 4

When configuring MariaDB binary logging for replication, which configuration file option enables it?

Accepted Answer

log_bin=/var/log/mysql/mysql-bin

Answer

Setting log_bin in my.cnf with a file path enables binary logging, which is required for MySQL/MariaDB replication.

Question 5

Which Apache module enables URL rewriting using regular expressions?

Accepted Answer

mod_rewrite

Answer

mod_rewrite provides a powerful rule-based URL rewriting engine using Perl-compatible regular expressions via RewriteRule and RewriteCond directives.

(LCA) Certified Linux Administrator Practice Test

(LCA) Certified Linux Administrator Practice Test

LCA Web Server & Database Administration 5