An administrator has configured pam_ldap and NSS to use LDAP. Users can log in, but the system is slow to respond when users run commands like 'id' or 'ls -l'. The LDAP server is healthy and network latency is low. Which configuration change is most likely to improve performance?

Increase the LDAP server's thread pool size

Change the bind credentials to use the root DN

Add 'ldap' to the 'hosts' line in /etc/nsswitch.conf

Enable NSS caching with nscd or systemd-resolved

LPIC-3 Mixed Environments

Domain 2Objective 1

391.1 LDAP Integration with PAM and NSS (weight: 2) LPIC-3-MIXED-ENVIRONMENTS Practice Questions (Page 2)

Part of the Topic 391: OpenLDAP as an Authentication Backend domain, which makes up ~10% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–6 in this domain), expect 2–3 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

7concepts

Questions 6–10

6foundation · easy
Which NSS module is responsible for retrieving user and group information from an LDAP directory?
Select an answer first
7foundation · easy
Which configuration file defines the order in which system databases (such as passwd, group, and shadow) are queried for user and group information?
Select an answer first
8application · medium
An administrator has installed libnss-ldap and configured /etc/nsswitch.conf to include 'ldap' in the passwd, group, and shadow lines. However, 'getent passwd' still does not return LDAP users. Which configuration file is most likely missing the base DN?
Select an answer first
9application · medium
A system administrator wants to ensure that LDAP users can change their passwords through the 'passwd' command, and that the new password is stored in the LDAP directory. Which PAM module type must be configured with pam_ldap?
Select an answer first
10expert · hard
An administrator has configured pam_ldap and NSS to use LDAP. Users can log in, but the system is slow to respond when users run commands like 'id' or 'ls -l'. The LDAP server is healthy and network latency is low. Which configuration change is most likely to improve performance?
Select an answer first

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391.1 LDAP Integration with PAM and NSS (weight: 2) LPIC-3-MIXED-ENVIRONMENTS Practice Questions (Page 2)

Questions 6–10

Which NSS module is responsible for retrieving user and group information from an LDAP directory?

Which configuration file defines the order in which system databases (such as passwd, group, and shadow) are queried for user and group information?

An administrator has installed libnss-ldap and configured /etc/nsswitch.conf to include 'ldap' in the passwd, group, and shadow lines. However, 'getent passwd' still does not return LDAP users. Which configuration file is most likely missing the base DN?

A system administrator wants to ensure that LDAP users can change their passwords through the 'passwd' command, and that the new password is stored in the LDAP directory. Which PAM module type must be configured with pam_ldap?

An administrator has configured pam_ldap and NSS to use LDAP. Users can log in, but the system is slow to respond when users run commands like 'id' or 'ls -l'. The LDAP server is healthy and network latency is low. Which configuration change is most likely to improve performance?

Keep studying — Topic 391: OpenLDAP as an Authentication Backend