A+ GRADED 1
Zabbix Certified
Specialist Exam (5)
(2025/2026 Update) |
Questions and Verified
Answers | Grade A
Instructions
1. This section covers Exam (5) of the Zabbix Certified
Specialist certification.
2. Read carefully and try to solve before checking the solution
3. Correct Answer is highlighted in green for emphasis.
4. Rationales
Secti will explain the logic behind correct and
incorrect answers.
5. Focus on advanced Zabbix operations, optimization, and
troubleshooting.
, 2
Question 1
In Zabbix 7.0, for optimizing proxy performance in a large-scale environment,
what is the recommended ProxyBufferMode setting to balance memory usage and
data persistence?
A. Disk B. Memory C. Hybrid D. None
C. Hybrid
Rationale: In Zabbix 7.0, setting ProxyBufferMode to "hybrid" is recommended
for optimal performance as it uses memory for recent data and falls back to disk for
older data, reducing I/O overhead while preventing data loss. Option A (Disk) is
the default but less efficient for high-volume setups; B (Memory) risks data loss on
restarts; D (None) disables buffering entirely, leading to immediate server polling
and increased load.
Question 2
When troubleshooting high CPU usage on a Zabbix proxy monitoring remote sites,
which log file should you first examine to identify excessive polling activity?
A. zabbix_server.log B. zabbix_proxy.log C. zabbix_agentd.log D. frontend.log
B. zabbix_proxy.log
Rationale: The zabbix_proxy.log file contains detailed information on proxy
activities, including polling intervals, item checks, and errors that could indicate
inefficient configurations causing high CPU. A is for server-side issues; C is agent-
specific; D does not exist in standard Zabbix logging. This step helps pinpoint
bottlenecks like unoptimized item keys or network delays.
Question 3
, 3
For advanced configuration in Zabbix 7.0, what replaced the "Advanced
configuration" checkboxes in item prototype setup to improve usability?
A. Tabbed interface B. Collapsible blocks C. Dropdown menus D. Separate wizard
B. Collapsible blocks
Rationale: Zabbix 7.0 introduced collapsible blocks for advanced options in item,
trigger, and service configurations, allowing users to expand only needed sections
without cluttering the UI. This enhances workflow efficiency in complex setups.
A, C, and D are not the implemented changes, which could lead to outdated
practices in exam scenarios.
Question 4
In a high-availability Zabbix setup, what is the primary cause of duplicate SNMP
Engine ID detection issues, and how is it logged?
A. Network latency; in zabbix_server.log B. Shared Engine IDs across devices;
periodically by each SNMP poller C. Proxy misconfiguration; in zabbix_proxy.log
D. Agent version mismatch; in zabbix_agentd.log
B. Shared Engine IDs across devices; periodically by each SNMP poller
Rationale: Duplicate SNMPv3 Engine IDs from multiple devices can cause
authentication failures; Zabbix 7.0 logs this periodically per poller in server logs
for troubleshooting. A is unrelated; C and D affect different components. This
logging aids in identifying and reconfiguring devices for unique IDs.
Question 5
To optimize database performance in a Zabbix environment with millions of items,
which MySQL optimizer switch should be disabled to resolve slow query issues?
A. index_merge_intersection B. index_condition_pushdown C.
mrVLDB_cache_limit D. eq_range_index_dive_limit
B. index_condition_pushdown
Zabbix Certified
Specialist Exam (5)
(2025/2026 Update) |
Questions and Verified
Answers | Grade A
Instructions
1. This section covers Exam (5) of the Zabbix Certified
Specialist certification.
2. Read carefully and try to solve before checking the solution
3. Correct Answer is highlighted in green for emphasis.
4. Rationales
Secti will explain the logic behind correct and
incorrect answers.
5. Focus on advanced Zabbix operations, optimization, and
troubleshooting.
, 2
Question 1
In Zabbix 7.0, for optimizing proxy performance in a large-scale environment,
what is the recommended ProxyBufferMode setting to balance memory usage and
data persistence?
A. Disk B. Memory C. Hybrid D. None
C. Hybrid
Rationale: In Zabbix 7.0, setting ProxyBufferMode to "hybrid" is recommended
for optimal performance as it uses memory for recent data and falls back to disk for
older data, reducing I/O overhead while preventing data loss. Option A (Disk) is
the default but less efficient for high-volume setups; B (Memory) risks data loss on
restarts; D (None) disables buffering entirely, leading to immediate server polling
and increased load.
Question 2
When troubleshooting high CPU usage on a Zabbix proxy monitoring remote sites,
which log file should you first examine to identify excessive polling activity?
A. zabbix_server.log B. zabbix_proxy.log C. zabbix_agentd.log D. frontend.log
B. zabbix_proxy.log
Rationale: The zabbix_proxy.log file contains detailed information on proxy
activities, including polling intervals, item checks, and errors that could indicate
inefficient configurations causing high CPU. A is for server-side issues; C is agent-
specific; D does not exist in standard Zabbix logging. This step helps pinpoint
bottlenecks like unoptimized item keys or network delays.
Question 3
, 3
For advanced configuration in Zabbix 7.0, what replaced the "Advanced
configuration" checkboxes in item prototype setup to improve usability?
A. Tabbed interface B. Collapsible blocks C. Dropdown menus D. Separate wizard
B. Collapsible blocks
Rationale: Zabbix 7.0 introduced collapsible blocks for advanced options in item,
trigger, and service configurations, allowing users to expand only needed sections
without cluttering the UI. This enhances workflow efficiency in complex setups.
A, C, and D are not the implemented changes, which could lead to outdated
practices in exam scenarios.
Question 4
In a high-availability Zabbix setup, what is the primary cause of duplicate SNMP
Engine ID detection issues, and how is it logged?
A. Network latency; in zabbix_server.log B. Shared Engine IDs across devices;
periodically by each SNMP poller C. Proxy misconfiguration; in zabbix_proxy.log
D. Agent version mismatch; in zabbix_agentd.log
B. Shared Engine IDs across devices; periodically by each SNMP poller
Rationale: Duplicate SNMPv3 Engine IDs from multiple devices can cause
authentication failures; Zabbix 7.0 logs this periodically per poller in server logs
for troubleshooting. A is unrelated; C and D affect different components. This
logging aids in identifying and reconfiguring devices for unique IDs.
Question 5
To optimize database performance in a Zabbix environment with millions of items,
which MySQL optimizer switch should be disabled to resolve slow query issues?
A. index_merge_intersection B. index_condition_pushdown C.
mrVLDB_cache_limit D. eq_range_index_dive_limit
B. index_condition_pushdown
