Zabbix Certified Troubleshooting Specialist
Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
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Question 1
What is the first log file to check when the Zabbix server is not starting?
A. zabbix_agentd.log
B. zabbix_server.log
C. mysql.log
D. syslog
Answer: B. zabbix_server.log
The zabbix_server.log file contains the primary startup and runtime
errors for the Zabbix server process, making it the most direct source
of troubleshooting information when the server fails to start.
Question 2
,Which component is responsible for collecting data from monitored
hosts in passive mode?
A. Zabbix server
B. Zabbix proxy
C. Zabbix agent
D. SNMP trapper
Answer: C. Zabbix agent
The Zabbix agent runs on monitored hosts and responds to requests
from the server or proxy, enabling passive checks.
Question 3
What does a "Zabbix agent is not reachable" error typically indicate?
A. Database corruption
B. Network or firewall issue
C. Incorrect trigger expression
D. High CPU usage on server
Answer: B. Network or firewall issue
,This error commonly occurs when network connectivity or firewall
rules prevent communication between the Zabbix server/proxy and
the agent.
Question 4
Which port does Zabbix agent use by default?
A. 80
B. 443
C. 10050
D. 10051
Answer: C. 10050
The Zabbix agent listens on port 10050 for incoming connections.
Question 5
Which port does Zabbix server use to receive data from proxies?
A. 10050
B. 10051
C. 3306
D. 22
, Answer: B. 10051
Zabbix server communicates with proxies and traps via port 10051.
Question 6
What is a common cause of "unsupported item key" errors?
A. Incorrect database credentials
B. Item key typo or unsupported item
C. Disk full on server
D. Proxy not configured
Answer: B. Item key typo or unsupported item
This error occurs when the item key is misspelled or not supported by
the agent or template.
Question 7
Which database is NOT officially supported by Zabbix server?
A. MySQL
B. PostgreSQL
C. Oracle
D. MongoDB
Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
Question 1
What is the first log file to check when the Zabbix server is not starting?
A. zabbix_agentd.log
B. zabbix_server.log
C. mysql.log
D. syslog
Answer: B. zabbix_server.log
The zabbix_server.log file contains the primary startup and runtime
errors for the Zabbix server process, making it the most direct source
of troubleshooting information when the server fails to start.
Question 2
,Which component is responsible for collecting data from monitored
hosts in passive mode?
A. Zabbix server
B. Zabbix proxy
C. Zabbix agent
D. SNMP trapper
Answer: C. Zabbix agent
The Zabbix agent runs on monitored hosts and responds to requests
from the server or proxy, enabling passive checks.
Question 3
What does a "Zabbix agent is not reachable" error typically indicate?
A. Database corruption
B. Network or firewall issue
C. Incorrect trigger expression
D. High CPU usage on server
Answer: B. Network or firewall issue
,This error commonly occurs when network connectivity or firewall
rules prevent communication between the Zabbix server/proxy and
the agent.
Question 4
Which port does Zabbix agent use by default?
A. 80
B. 443
C. 10050
D. 10051
Answer: C. 10050
The Zabbix agent listens on port 10050 for incoming connections.
Question 5
Which port does Zabbix server use to receive data from proxies?
A. 10050
B. 10051
C. 3306
D. 22
, Answer: B. 10051
Zabbix server communicates with proxies and traps via port 10051.
Question 6
What is a common cause of "unsupported item key" errors?
A. Incorrect database credentials
B. Item key typo or unsupported item
C. Disk full on server
D. Proxy not configured
Answer: B. Item key typo or unsupported item
This error occurs when the item key is misspelled or not supported by
the agent or template.
Question 7
Which database is NOT officially supported by Zabbix server?
A. MySQL
B. PostgreSQL
C. Oracle
D. MongoDB
