An administrator is monitoring an OpenLDAP server and sees that the 'connection' counter in slapd-metrics is high, but the 'threads' counter is low. The server is rejecting new connections. What is the most likely cause?

The thread pool is exhausted, and connections are queued.

The loglevel is too high, causing connections to be rejected.

The cache is too small, causing connections to be rejected.

The connection limit is reached, and the threads are idle waiting for work.

A university runs OpenLDAP for student authentication. The helpdesk reports that searches for students by surname are slow, often taking several seconds. The directory contains 50,000 entries, and the cn=surname index is already defined in slapd.conf. Which action should the administrator take first to diagnose the issue?

Increase the entry cache size to 100,000 entries.

Run slapd -T test to verify the index configuration syntax.

Use ldapsearch with the -d 1 option to see if the query is using the index or performing a full scan.

Rebuild the index with slapindex and restart slapd.

LPIC-3 Mixed Environments

Domain 1Objective 3

390.3 OpenLDAP Server Performance Tuning (weight: 2) LPIC-3-MIXED-ENVIRONMENTS Practice Questions (Page 2)

Part of the Topic 390: OpenLDAP Configuration domain, which makes up ~11% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–7 in this domain), expect 1–2 from this objective — we provide 18 practice questions to prepare you well beyond it. (estimate)

18questions here

4free pages

6concepts

Questions 6–10

6expert · hard
An administrator is monitoring an OpenLDAP server and sees that the 'connection' counter in slapd-metrics is high, but the 'threads' counter is low. The server is rejecting new connections. What is the most likely cause?
Select an answer first
7foundation · easy
After modifying index definitions in OpenLDAP, which command is used to rebuild the indexes?
Select an answer first
8application · medium
A university runs OpenLDAP for student authentication. The helpdesk reports that searches for students by surname are slow, often taking several seconds. The directory contains 50,000 entries, and the cn=surname index is already defined in slapd.conf. Which action should the administrator take first to diagnose the issue?
Select an answer first
9foundation · easy
In OpenLDAP, which cache stores the most recently accessed entries to reduce disk I/O?
Select an answer first
10application · medium
An administrator wants to benchmark the performance of an OpenLDAP server after making configuration changes. The goal is to measure the server's throughput for a typical authentication workload. Which tool is most appropriate for this task?
Select an answer first

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390.3 OpenLDAP Server Performance Tuning (weight: 2) LPIC-3-MIXED-ENVIRONMENTS Practice Questions (Page 2)

Questions 6–10

An administrator is monitoring an OpenLDAP server and sees that the 'connection' counter in slapd-metrics is high, but the 'threads' counter is low. The server is rejecting new connections. What is the most likely cause?

After modifying index definitions in OpenLDAP, which command is used to rebuild the indexes?

In OpenLDAP, which cache stores the most recently accessed entries to reduce disk I/O?

An administrator wants to benchmark the performance of an OpenLDAP server after making configuration changes. The goal is to measure the server's throughput for a typical authentication workload. Which tool is most appropriate for this task?

Keep studying — Topic 390: OpenLDAP Configuration