{"id":10153,"date":"2023-05-01T11:10:13","date_gmt":"2023-05-01T11:10:13","guid":{"rendered":"https:\/\/www.scmgalaxy.com\/tutorials\/?p=10153"},"modified":"2023-06-19T13:29:53","modified_gmt":"2023-06-19T13:29:53","slug":"top-50-nagios-interview-questions-with-answers","status":"publish","type":"post","link":"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-nagios-interview-questions-with-answers\/","title":{"rendered":"Top 50 Nagios Interview Questions with Answers"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-20-1024x576.png\" alt=\"\" class=\"wp-image-10154\" width=\"637\" height=\"358\" srcset=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-20-1024x576.png 1024w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-20-300x169.png 300w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-20-768x432.png 768w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-20.png 1280w\" sizes=\"auto, (max-width: 637px) 100vw, 637px\" \/><figcaption class=\"wp-element-caption\"><strong><em>Nagios Interview Questions with Answers<\/em><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">1) What is Nagios?<br>a) A network monitoring system<br>b) A database management system<br>c) A web server framework<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) A network monitoring system<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">2) Which protocol does Nagios use for monitoring?<br>a) SMTP<br>b) SNMP<br>c) FTP<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) SNMP<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">3) What is the main configuration file in Nagios?<br>a) nagios.cfg<br>b) nagios.conf<br>c) nagios.ini<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) nagios.cfg<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">4) How often does Nagios perform checks by default?<br>a) Every minute<br>b) Every 5 minutes<br>c) Every 15 minutes<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) Every 5 minutes<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">5) What is the command to verify the Nagios configuration files?<br>a) nagios -v<br>b) nagios -c<br>c) nagios -s<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) nagios -v<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">6) Which plugin is used for monitoring disk usage?<br>a) check_disk<br>b) check_cpu<br>c) check_memory<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_disk<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">7) Which plugin is used for monitoring network ports?<br>a) check_tcp<br>b) check_udp<br>c) check_http<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_tcp<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">8) What is the default port for Nagios web interface?<br>a) 80<br>b) 443<br>c) 8080<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) 8080<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">9) Which command is used to restart the Nagios service?<br>a) service nagios restart<br>b) systemctl restart nagios<br>c) restart nagios service<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) systemctl restart nagios<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">10) Which plugin is used for monitoring CPU usage?<br>a) check_cpu<br>b) check_memory<br>c) check_disk<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_cpu<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">11) Which plugin is used for monitoring memory usage?<br>a) check_memory<br>b) check_cpu<br>c) check_disk<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_memory<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">12) Which plugin is used for monitoring HTTP errors?<br>a) check_http<br>b) check_tcp<br>c) check_udp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_http<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">13) Which plugin is used for monitoring ping response time?<br>a) check_ping<br>b) check_tcp<br>c) check_udp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_ping<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">14) Which command is used to check the status of Nagios service?<br>a) service nagios status<br>b) systemctl status nagios<br>c) status nagios service<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) systemctl status nagios<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">15) Which file is used for defining host configurations in Nagios?<br>a) hosts.cfg<br>b) services.cfg<br>c) timeperiods.cfg<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) hosts.cfg<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">16) Which file is used for defining service configurations in Nagios?<br>a) services.cfg<br>b) hosts.cfg<br>c) timeperiods.cfg<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) services.cfg<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">17) Which plugin is used for monitoring DNS resolution?<br>a) check_dns<br>b) check_http<br>c) check_tcp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_dns<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">18) Which plugin is used for monitoring SSH service?<br>a) check_ssh<br>b) check_scp<br>c) check_telnet<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_ssh<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">19) What is the command to check the version of Nagios?<br>a) nagios -v<br>b) nagios -V<br>c) nagios -version<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) nagios -V<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">20) Which plugin is used for monitoring MySQL database?<br>a) check_mysql<br>b) check_http<br>c) check_tcp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_mysql<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">21) Which file is used for storing the log files in Nagios?<br>a) nagios.log<br>b) nagios.txt<br>c) nagios.dlog<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) nagios.log<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">22) Which plugin is used for monitoring Apache web server?<br>a) check_http<br>b) check_tcp<br>c) check_udp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_http<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">23) Which plugin is used for monitoring FTP service?<br>a) check_ftp<br>b) check_sftp<br>c) check_tftp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_ftp<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">24) Which file is used for defining time periods in Nagios?<br>a) timeperiods.cfg<br>b) hosts.cfg<br>c) services.cfg<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) timeperiods.cfg<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">25) What is the command to check the syntax of Nagios configuration files?<br>a) nagios -c<br>b) nagios -s<br>c) nagios -v<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) nagios -c<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">26) Which plugin is used for monitoring POP3 service?<br>a) check_pop<br>b) check_imap<br>c) check_smtp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_pop<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">27) Which plugin is used for monitoring NFS service?<br>a) check_nfs<br>b) check_http<br>c) check_tcp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_nfs<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">28) What is the command to check the status of Nagios services and hosts?<br>a) nagios -s<br>b) nagios -h<br>c) nagios -a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) nagios -a<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">29) Which plugin is used for monitoring Active Directory service?<br>a) check_ad<br>b) check_ldap<br>c) check_http<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) check_ldap<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">30) Which file is used for defining contact groups in Nagios?<br>a) contactgroups.cfg<br>b) contacts.cfg<br>c) services.cfg<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) contactgroups.cfg<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">31) What is the command to check the uptime of a host in Nagios?<br>a) check_uptime<br>b) check_load<br>c) check_cpu<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_uptime<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">32) Which plugin is used for monitoring DNS server zones?<br>a) check_zone<br>b) check_dns<br>c) check_http<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_zone<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">33) What is the command to check the status of a specific service in Nagios?<br>a) check_service<br>b) check_status<br>c) check_snmp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) check_snmp<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">34) Which plugin is used for monitoring PostgreSQL database?<br>a) check_postgres<br>b) check_mysql<br>c) check_http<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_postgres<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">35) Which file is used for defining command configurations in Nagios?<br>a) commands.cfg<br>b) services.cfg<br>c) timeperiods.cfg<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) commands.cfg<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">36) What is the command to check the network connectivity in Nagios?<br>a) check_network<br>b) check_snmp<br>c) check_ping<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) check_ping<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">37) Which plugin is used for monitoring NTP service?<br>a) check_ntp<br>b) check_http<br>c) check_tcp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_ntp<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">38) What is the command to check the status of a specific host in Nagios?<br>a) check_host<br>b) check_status<br>c) check_cpu<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_host<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">39) Which plugin is used for monitoring Samba service?<br>a) check_samba<br>b) check_http<br>c) check_tcp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_samba<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">40) Which file is used for defining hostgroup configurations in Nagios?<br>a) hostgroups.cfg<br>b) hosts.cfg<br>c) services.cfg<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) hostgroups.cfg<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">41) What is the command to check the status of a specific service group in Nagios?<br>a) check_servicegroup<br>b) check_status<br>c) check_snmp<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_servicegroup<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">42) Which plugin is used for monitoring RAID status?<br>a) check_raid<br>b) check_disk<br>c) check_cpu<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_raid<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">43) Which plugin is used for monitoring Windows services?<br>a) check_nt<br>b) check_snmp<br>c) check_http<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_nt<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">44) What is the command to check the free disk space in Nagios?<br>a) check_freedisk<br>b) check_memory<br>c) check_disk<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) check_disk<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">45) Which plugin is used for monitoring SSH logins?<br>a) check_sshlogin<br>b) check_ssh<br>c) check_telnet<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_sshlogin<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">46) Which file is used for defining servicegroup configurations in Nagios?<br>a) servicegroups.cfg<br>b) services.cfg<br>c) hosts.cfg<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) servicegroups.cfg<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">47) What is the command to check the network latency in Nagios?<br>a) check_latency<br>b) check_cpu<br>c) check_ping<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_latency<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">48) Which plugin is used for monitoring Exchange Server?<br>a) check_exchange<br>b) check_smtp<br>c) check_http<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_exchange<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">49) Which plugin is used for monitoring Oracle database?<br>a) check_oracle<br>b) check_mysql<br>c) check_http<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) check_oracle<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">50) Which file is used for defining user configurations in Nagios?<br>a) contacts.cfg<br>b) contactgroups.cfg<br>c) commands.cfg<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) contacts.cfg<\/h4>\n","protected":false},"excerpt":{"rendered":"<p>1) What is Nagios?a) A network monitoring systemb) A database management systemc) A web server framework Answer: a) A network [&hellip;]<\/p>\n","protected":false},"author":33,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10153","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Top 50 Nagios Interview Questions with Answers - scmGalaxy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-nagios-interview-questions-with-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 50 Nagios Interview Questions with Answers - scmGalaxy\" 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