{"id":261272,"date":"2025-07-20T04:54:25","date_gmt":"2025-07-20T04:54:25","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=261272"},"modified":"2025-07-20T04:54:27","modified_gmt":"2025-07-20T04:54:27","slug":"what-is-the-first-usable-ip-address-in-the-192-168-1-128-25-network","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/20\/what-is-the-first-usable-ip-address-in-the-192-168-1-128-25-network\/","title":{"rendered":"what is the first usable ip address in the 192.168.1.128\/25 network"},"content":{"rendered":"\n

what is the first usable ip address in the 192.168.1.128\/25 network?<\/p>\n\n\n\n

The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n

In the 192.168.1.128\/25<\/strong> network, the first usable IP address is 192.168.1.129<\/strong>.<\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

The given network has a \/25<\/strong> subnet mask, which means that the first 25 bits of the IP address represent the network part, and the remaining 7 bits are used for host addresses. In this case, the subnet mask is 255.255.255.128<\/strong>, which corresponds to 11111111.11111111.11111111.10000000<\/strong> in binary.<\/p>\n\n\n\n

Step-by-Step Breakdown:<\/h4>\n\n\n\n
    \n
  1. Determine the Network Address:<\/strong>\n
      \n
    • The network address is 192.168.1.128<\/strong>, and it is the first address in the range. This address cannot be assigned to any host, as it represents the network itself.<\/li>\n\n\n\n
    • This is derived by performing a logical AND operation between the IP address 192.168.1.128<\/strong> and the subnet mask 255.255.255.128<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • Identify the Broadcast Address:<\/strong>\n
        \n
      • The broadcast address for the subnet is 192.168.1.255<\/strong>, which is the last address in the range. This address is used to communicate with all hosts in the network and cannot be assigned to any individual device.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • Calculate the Usable Range:<\/strong>\n
          \n
        • The usable IP addresses are all the addresses between the network address and the broadcast address, excluding these two.<\/li>\n\n\n\n
        • For the 192.168.1.128\/25<\/strong> network, the usable IP address range is from 192.168.1.129<\/strong> to 192.168.1.254<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
        • First Usable IP Address:<\/strong>\n
            \n
          • The first usable IP address is 192.168.1.129<\/strong>, which can be assigned to the first host on the network.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n

            In summary, in the 192.168.1.128\/25<\/strong> network, the first usable IP address is 192.168.1.129<\/strong>, and it can be assigned to the first host in that subnet.<\/p>\n","protected":false},"excerpt":{"rendered":"

            what is the first usable ip address in the 192.168.1.128\/25 network? The correct answer and explanation is: In the 192.168.1.128\/25 network, the first usable IP address is 192.168.1.129. Explanation: The given network has a \/25 subnet mask, which means that the first 25 bits of the IP address represent the network part, and the remaining […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-261272","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/261272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=261272"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/261272\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=261272"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=261272"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=261272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}