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ZABBIX CERTIFIED SPECIALIST YEAR 2024- 2025 -
ACCURATE CURRENTLY TESTING EXAM
VERSIONS WITH ACTUAL QUESTIONS AND
DETAILED ANSWERS WITH A STUDY GUIDE-
EXPERT VERIFIED FOR GURANTEED PASS
What are the 3 main types of hosts that Zabbix can gather data from? - ANSWER>>Hardware, OS, VM & Container What are the 3 other types of hosts that Zabbix can gather data from? - ANSWER>>Cloud hosts Applications Business Services What method is used to monitor Databases? - ANSWER>>ODBC When was Zabbix 1.0 released? - ANSWER>>23rd March 2004 How often is a long term support version of Zabbix released? - ANSWER>>Every 18 months When was Zabbix LLC established? - ANSWER>> Which parts of Zabbix have been built using C? - ANSWER>>Server, Proxy, Agent What parts of Zabbix have been built using Go? - ANSWER>>Zabbix Agent 2, Web Services What does Zabbix use PHP for? - ANSWER>>Frontend Does Zabbix support Java? - ANSWER>>Yes Name three commerical services that Zabbix LLC and certified partners provide? - ANSWER>>Technical Support, Remote Tshooting, Consulting, Upgrades, Training, Turn-key Solutions, Integration, Template Building
What are the 3 main Zabbix components? - ANSWER>>Server, Frontend, Database What are the 3 main functions of Zabbix Server? - ANSWER>>Data collection, Problem detection, Notification What are 3 advantages of Zabbix proxy? - ANSWER>>Monitoring remote locations, Distributing load between proxies, Limited firewall rules What processes all collected data? - ANSWER>>Zabbix Server Zabbix server has several components, name one - ANSWER>>Data collectors, internal processes, caches What are the 7 components that make up Zabbix Server? - ANSWER>>Config Cache, Config Sync, Data Collectors, Preprocessing, History Cache, Value Cache, History Syncers What is the minimum supported version for MySQL? - ANSWER>>8.0.x but 8.0.20 is recommended Can Zabbix be installed on Windows? - ANSWER>>No What are the additional libraries required when installing Zabbix on Linux? - ANSWER>>Libpcre, libevent, zlib By default, how long does it take for changes made in the frontend to show up in the database? - ANSWER>>Once per minute Is it possible to force Zabbix server to read config data with a runtime command? - ANSWER>>Yes What modes exist for the Zabbix agent and what differentiates them? - ANSWER>>Active, passive. In active mode, all data processing is performed on the agent without pollers. In passive mode, the poller connects to the agent on TCP port 10050.
What are the 5 minimum requirements in the configuration file required to start the Zabbix server? - ANSWER>>Database host address, name, schema (PostgreSQL), user, password How do you start Zabbix with a different configuration file? - ANSWER>>zabbix_server - c /tmp/test_zabbix_server.conf Name one runtime control that the zabbix_server can do? - ANSWER>>zabbix_server - R config_cache_reload zabbix_server - R housekeeper_execute zabbix_server - R snmp_cache_reload zabbix_server - R secrets_reload zabbix_server - R diaginfo What is the recommended debug level for a production environment? - ANSWER>>3 - Warning What is required if you change the log level in the config file? - ANSWER>>Server restart How do you increase the log level using runtime controls? - ANSWER>>zabbix_server - R log_level_increase What is the command to install MySQL on a Zabbix server? - ANSWER>>dnf - y install mysql- community-server What is the command to create the database on MySQL? - ANSWER>>create database zabbix character set utf8mb4 collate utf8mb4_bin; What is the command to edit the zabbix config file? - ANSWER>>nano /etc/zabbix/zabbix_server.conf What is the command to enable the Zabbix server service and have it start on every boot? - ANSWER>>Systemctl enable zabbix-server —now Where is the Zabbix log file located? - ANSWER>>/var/log/zabbix/zabbix_server.log
What is the minimum version of PHP supported? - ANSWER>>7.2.5. 8.x supported since Zabbix 6.0. Name two of each for the database engine and web server package? - ANSWER>>Database: zabbix-web-mysql, zabbix-web-postgresql. Web: zabbix-apache-conf, zabbix-nginx-conf What does Zabbix use by default on RHEL on the frontend? - ANSWER>>Php-fpm (FastCGI Process Manager) What is the minimum supported screen width for Zabbix frontend? - ANSWER>>1200px What must you do if one of the frontend prerequisites is not met? - ANSWER>>Fix the problem and restart php-fpm service What are the four built in themes that Zabbix offers? - ANSWER>>Blue. Dark. High contrast light. High contrast dark. What file contains the frontend settings? - ANSWER>>/etc/zabbix/web/zabbix.conf.php How do you install Zabbix frontend from the command line? - ANSWER>>dnf - y install zabbix- web-mysql (or zabbix-web-postgresql) zabbix-apache-conf (or zabbix-nginx-conf) What command do you run to check the Apache status? - ANSWER>>systemctl status httpd When configuring the DB connection, what option exists for storing credentials other than plain text? - ANSWER>>Hashicorp Vault What can the global search in the Zabbix frontend be used to find? - ANSWER>>Hosts, host groups and templates Which menu in the Zabbix frontend contains the audit log? - ANSWER>>Reports Which user types do not have access to Administration? - ANSWER>>User and admin
True or false. An event will inherit all the host, item and trigger tags. - ANSWER>>True What options exist for filtering through hosts? - ANSWER>>Host group, template, name, DNS, IP, Port, Monitoring by (any, server, proxy), tags What tabs exist when creating/editing a host? - ANSWER>>Host, IPMI, Tags, Macros, Inventory, Encryption, Value mapping What are the four types of Macros and how are they written? - ANSWER>>Built in {MACRO}, User defined {$MACRO}, low level discovery {#MACRO}, Expression {?MACRO} What is the macro for 'last received metric'? - ANSWER>>{ITEM.LASTVALUE} On what levels can macros be defined and in what order do they take precedent? - ANSWER>>1. Host 2. Template 3. Global True or false. Inherited macros are displayed by default? - ANSWER>>False Host groups are used for? - ANSWER>>Logical grouping of hosts and templates True or false. All access rights are based on user groups and host groups. - ANSWER>>True True or False. It is required to create the parent host group before creating nested host groups. - ANSWER>>False Can an admin create a host group? - ANSWER>>No If a host belongs to multiple host groups and you disable one of these groups, what happens? - ANSWER>>All hosts in that host group will be disabled What entities are available for monitoring when configuring a host? - ANSWER>>Items, Triggers, Graphs, Web scenarios, Discovery rules
True or false. Host names & visible names must be unique and are case sensitive? - ANSWER>>True What are the four supported interface types? - ANSWER>>ZBX (passive zabbix agent), SNMP, IPMI, JMX (Java) What item types require an interface but may or may not use it? - ANSWER>>Simple check, external check, Telnet/SSH What does the Grey availability icon mean? - ANSWER>>At least one interface had unknown status and none unavailable What are the default values for unreachable pollers? - ANSWER>>UnreachableDelay=15, UnreachablePeriod=45, UnavailableDelay= What must be unique when adding an Item to a Host? - ANSWER>>Key. Names do not need to be unique (not recommended) Passive data collection is also called polling, what is the other name for active data collection? - ANSWER>>Trapping When working with Items, Optional parametres '<>' will use what if not specified? - ANSWER>>Default values When working with Items, in what scenarios would you need double quotations? - ANSWER>>If the key contains commas, square brackets or quotation mark (escaped with backslash ") Regarding data collection, what is the difference between history and trends? - ANSWER>>History keeps each value with UNIX timestamp, Trends keep hourly aggregated data Housekeeper removes what data and how frequently by default? - ANSWER>>Expired data, hourly Can you apply a template to a host group? - ANSWER>>No
What field is mandatory for Zabbix agent to communicate in Active Mode? - ANSWER>>Hostname, it must be defined the same on both the frontend host & in the zabbix_agentd.conf file. On which port is data from active Agents accepted? And by what process? - ANSWER>>Port 10051, by trapper process. Are interfaces required for Active Agent checks? - ANSWER>>No What value in the zabbix_agentd.conf file needs to be updated with the Zabbix Server or Proxy IP address? - ANSWER>>ServerActive What command is used to return the Zabbix Agent hostname? - ANSWER>>zabbix_agentd - t system.hostname. In the zabbix_agentd.conf file, what happens if multiple IP addresses are listed under the ServerActive field? - ANSWER>>It will send data to all listed servers. How often does the Agent retrieve configuration data from the Zabbix Server? - ANSWER>>On agent start and every 2 minutes. Where does the Zabbix agent store collected values when in active mode? And how often is the data sent? - ANSWER>>Memory buffer (every 5 seconds by default). Do active checks use an availability icon? - ANSWER>>No, must refer to latest data. What must you do after updating the hostname on an agent? And what is the command to do this? - ANSWER>>You must restart the agent using the command "systemctl restart zabbix- agent". What is the default hostname on new Agent installations and why is this a problem? - ANSWER>>Zabbix server, hostname must be unique otherwise the data will be represented under the host called Zabbix server.
Why are Active checks more precise? - ANSWER>>Because the UNIXTIME is exact when the log is generated on the device running the agent. What is the main purpose of UserParameters? - ANSWER>>Allows you to run a check that does not come predefined with Zabbix i.e. Linux command. What must be unique on the Zabbix agent in regards to UserParameters? - ANSWER>>Keys. Can you reload userparameters without restarting the Zabbix agent? If so, what is the command?
- ANSWER>>Yes, zabbix_agentd - R userparameter_reload What is the sytnax for UserParameters? - ANSWER>>UserParameter=key,command How do you run a UserParameter script? - ANSWER>>zabbix_agentd - t mykey Why should you not configure a UserParameter that takes a long time to finish? - ANSWER>>They will respect timeouts defined in the server and agent configuration and likely timeout. If you change how data is shown in the frontend, does it modify the data in the database? - ANSWER>>No What character can be used to prevent a unit from being converted using special processing? - ANSWER>>Exclamation mark "!" before the unit value. If you define the unit "unixtime" under an item, how will it display on the frontend portal? - ANSWER>>2023.03.21 13:28: What information types support value maps between raw values and string representations? - ANSWER>>Numeric (unsigned), numeric (float), Character. If multiple mappings overlap, what match will be applied? - ANSWER>>First.
What is the difference between numeric (unsigned) and numeric (float)? - ANSWER>>Unsigned; whole numbers (rounds down), float; decimal numbers. What type of regular expression does Zabbix support for preprocessing? - ANSWER>>PCRE (Perl Compatible Regular Expression) When using regular expression, how many captured groups can be used? - ANSWER>> What two fields must be specified when setting up preprocessing on the frontend? - ANSWER>>Pattern - regular expression & Output - capturing group What is the purpose of discard unchanged? - ANSWER>>To limit unnecessary data from being added to the database. Typically data that does not change over time. What is the step that is always executed as the first preprocessing step? - ANSWER>>Check if there was an error in collecting item value What are the three main ways in which Items can become unsupported? - ANSWER>>On data collection time, In preprocessing steps, Or when writing into database What are the three ways in which Items may become unsupported on data collection time? And how can you fix them? - ANSWER>>Wrong item key or parameters, Timeout/communication error, Wrong credentials/incorrect permissions. Can be fixed by 'check for not supported value' preprocessing step When will not supported Items be checked? - ANSWER>>Every item update interval What Zabbix server command is used to reload the configuration cache? - ANSWER>>zabbix- server - R config_cache_reload When running a passive item test, is any of this data stored? - ANSWER>>No What are the two options for testing an Item? - ANSWER>>Manual test or get value from the host
What is the order of the values in the Trigger expression? And what is the syntax for this? - ANSWER>>function(/host/key,) In which two locations can triggers be created? - ANSWER>>Host, Template Which two fields are mandatory when creating triggers? - ANSWER>>Trigger name, Trigger expression What tool can you use to create dynamic problem names for Triggers? - ANSWER>>Macros Regarding event names, the same set of macros is supported as in the trigger name plus which macros? - ANSWER>>{TIME} & {?EXPRESSION} What is the syntax for an expression macro? - ANSWER>>{?expression} Are user macros supported inside expression macros? - ANSWER>>No What macros can leverage the fmtnum function and what is this functions purpose? - ANSWER>>{ITEM.VALUE}, {ITEM.LASTVALUE} and this defines the number of digits after a decimal point What is the point of Operational data when looking at the problems page? - ANSWER>>To display real time data that is not present in the problem message What are the three options for displaying Operational data? - ANSWER>>None, Separately (separate column), With problem name (separated by parentheses) What are the six severities can be assigned to a trigger? - ANSWER>>Not classified, Info, Warning, Average, High, Disaster Can you change the colour of severities? If so, where can this be done? - ANSWER>>Yes under Administration > General > Trigger displaying options
What is one of the most common parameters for Trigger functions? - ANSWER>>Time i.e. 10 (seconds), 10m (minutes), #10 (10 values), 10h (hours) What operators are supported for Trigger functions? - ANSWER>>+,-,*,/. <, <=, >, >=, =, <>, and, or, not True or False. It is possible to compare a function against a user macro. - ANSWER>>True. How can you use the last() function to return the 35th last value received one hour ago? - ANSWER>>last(/host/key,#35:now-1h) How often are time-based Trigger functions recalculated? - ANSWER>>Every 30 seconds no matter what update interval is configured (in addition to) What does this Trigger function do? min(/host/system.cpu.load,30s) > 2 and dayofweek() > 5 - ANSWER>>Detects CPU load for a minimum value of 2 every 30 seconds, only on weekdays (check this) What are the two possible return values for the 'nodata' Trigger function? - ANSWER>>0 = data, 1 = no data What is the issue with using time-based functions in Triggers with multiple event generation? - ANSWER>>It will create a new problem every 30 seconds What are three things that nodata() can be used to detect? - ANSWER>>Zabbix agent availability. Changes in log files monitored by Zabbix. Data received on regular intervals. True or False. Zabbix supports dependencies between hosts directly. - ANSWER>>False When setting up Trigger dependencies, what three things will happen to problems generated by dependent triggers? - ANSWER>>They will be suppressed and hidden. Zabbix will not execute actions for the dependent trigger. Dependent Trigger will be re-evaluated and follow state of parent when parent Trigger changes state to "OK".
Does the hostname have any impact on passive checks? - ANSWER>>No Can you add tags to a trigger? - ANSWER>>Yes Are templates linked to each individual host directly? - ANSWER>>Yes but like hosts, they also must be assigned to at least one host group for logical grouping What properties do Templates have in common with Hosts? - ANSWER>>Name, Visible Name, Groups, Description, Linked Templates, Tags, User Macros, Value Maps What are the two ways in which you can link Templates to Hosts? - ANSWER>>Automatic lookup field or List selector What happens when a Host is linked to a Template? - ANSWER>>It will inherit all entities from the Template but will generate a new ID What is shown in the name of an Item on a Host if linked to a Template? - ANSWER>>It will be preceded by the Template name What happens if you add a Template to a Host that has a matching key? - ANSWER>>It will inherit the key from the Template What is the difference between Unlink, and Unlink and clear when it comes to removing Template entities from a host? (same for Delete, and Delete and clear) - ANSWER>>Unlink will remove the template and reliquish the entities to the host. Unlink & clear will remove the template and the entities What must you do every time you modify the /etc/zabbix/zabbix_agentd.conf file and what command does this? - ANSWER>>Restart Zabbix agent using the 'systemctl restart zabbix-agent' command True or false. Template tags are inherited by a Hosts own entities. - ANSWER>>False. But the reverse is true, Template entities will inherit tags from the Hosts entities.
True or false. Every value sent by Zabbix sender must have unique timestamps. - ANSWER>>True Can you add custom timestamps to data when using zabbix_sender? If so, how? - ANSWER>>Yes using the - T option How do you send values one by one when using zabbix_sender? - ANSWER>>-r option True or false. When using zabbix_sender, a successful response must contain failed items. - ANSWER>>False, it must not contain any failed items. What is the key required to execute an SSH command from Zabbix Server or Proxy? - ANSWER>>ssh.run[description,,,] What two methods can be used for authentication when running an SSH script? - ANSWER>>Username/password or Public key authentication True or false. Regarding dependent items, the master item collects all data using any item type. - ANSWER>>True True or false. The master item stores the history for all the dependent items. - ANSWER>>False True or false. If the master item is deleted, all dependent items will remain. - ANSWER>>False What are two ways in which dependent items can be created? - ANSWER>>By creating new item with dependent item type and specifying master item, Or by opening menu on item configuration form True or false. Regarding dependent items, at least one preprocessing step is required to extract the required data. - ANSWER>>True, otherwise it will be an exact copy of the master item. True or false. Dependent items are only updated when master item retrieves new values. - ANSWER>>True
How many levels of dependency are supported for dependent items? - ANSWER>>3. Master > 1
2 > 3 What is one main benefit of using dependent items? - ANSWER>>Metrics are collected in bulk. Less connections to monitored hosts. What SNMP OID index value is required for non-indexed objects? - ANSWER>> What is the last SNMP OID value for sysContact? - ANSWER>> What library is required on the Zabbix server or proxy to allow SNMP to work? - ANSWER>>net- snmp What process performs SNMP monitoring? - ANSWER>>Poller What needs to be true for SNMPv3 to work correctly? - ANSWER>>SNMP engine ID must be unique per device, SNMP engine boots must be persistent Whats the difference between MIB and OID in SNMP? - ANSWER>>MIB is a text file, OID is a numerical address Where do you enter information pertaining to SNMP MIB? - ANSWER>>SNMP OID field What do you need to install to get SNMP utilities (snmpwalk, snmpget)? - ANSWER>>net-snmp- utils How can you specify the output format in an snmpwalk request? - ANSWER>>-On flag What are the four steps that occur when SNMP traps are sent from a device to Zabbix server? - ANSWER>>1. snmptrapd receives a trap and passes trap to trap receiver
- Trap receiver parses, formats and writes trap to a file
- Zabbix SNMP trapper process reads and parses the trap file
- Zabbix checks all SNMP trap items with SNMP interface address matching trap address
