{"id":222397,"date":"2025-05-31T10:03:20","date_gmt":"2025-05-31T10:03:20","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=222397"},"modified":"2025-05-31T10:03:22","modified_gmt":"2025-05-31T10:03:22","slug":"if-the-source-is-192-168-1-254-and-the-destination-is-10-1-1-254-the-given-paths-could-be","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/31\/if-the-source-is-192-168-1-254-and-the-destination-is-10-1-1-254-the-given-paths-could-be\/","title":{"rendered":"If the source is 192.168.1.254 and the destination is 10.1.1.254, the given paths could be"},"content":{"rendered":"\n

If the source is 192.168.1.254 and the destination is 10.1.1.254, the given paths could be:<\/p>\n\n\n\n

192.168.0.0\/24
10.1.0.0\/16
192.168.1.0\/26
172.16.100.0\/24
192.168.1.64\/26
10.2.1.0\/16
How does it travel?<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

To determine how a packet travels from source IP 192.168.1.254<\/strong> to destination IP 10.1.1.254<\/strong>, we need to analyze routing path selection<\/strong> using the Longest Prefix Match<\/strong> rule. This rule ensures the most specific (longest) match is selected when multiple routes are available.<\/p>\n\n\n\n

Step 1: Check Matching Destination Networks<\/h3>\n\n\n\n

We are focusing on the destination IP 10.1.1.254<\/strong>, so we evaluate which of the provided network paths it falls into:<\/p>\n\n\n\n

    \n
  1. 192.168.0.0\/24<\/code> \u2013 Doesn’t match (not relevant; source network)<\/li>\n\n\n\n
  2. 10.1.0.0\/16<\/code> \u2013 Matches<\/strong>: 10.1.1.254 falls within 10.1.0.0 \u2013 10.1.255.255<\/li>\n\n\n\n
  3. 192.168.1.0\/26<\/code> \u2013 Doesn’t match (source network, not destination)<\/li>\n\n\n\n
  4. 172.16.100.0\/24<\/code> \u2013 Doesn’t match<\/li>\n\n\n\n
  5. 192.168.1.64\/26<\/code> \u2013 Doesn’t match<\/li>\n\n\n\n
  6. 10.2.1.0\/16<\/code> \u2013 Doesn’t match<\/li>\n<\/ol>\n\n\n\n

    So, the only matching path for the destination IP<\/strong> is:<\/p>\n\n\n\n

    \n

    \u2705 10.1.0.0\/16<\/strong><\/p>\n<\/blockquote>\n\n\n\n

    Step 2: Apply Longest Prefix Match<\/h3>\n\n\n\n

    If multiple paths match, the router chooses the one with the longest subnet mask<\/strong> (i.e., the most specific route). But here, only one<\/strong> path (10.1.0.0\/16<\/code>) matches the destination, so that is the route used.<\/p>\n\n\n\n

    \u2705 Correct Answer: 10.1.0.0\/16<\/strong><\/h3>\n\n\n\n
    \n\n\n\n

    \ud83d\udcdd Explanation<\/h3>\n\n\n\n

    In IP routing, when a packet is transmitted from a source to a destination, routers determine the best path based on routing tables using a principle called Longest Prefix Match<\/strong>. This means that if several routes match the destination IP, the one with the most specific (longest) subnet mask is chosen.<\/p>\n\n\n\n

    Given the source IP is 192.168.1.254<\/code> and the destination is 10.1.1.254<\/code>, we inspect the list of potential network paths to find which one contains the destination IP. Among the given options, only the 10.1.0.0\/16<\/code> network includes the destination IP. A \/16 subnet includes IPs from 10.1.0.0<\/code> to 10.1.255.255<\/code>, and 10.1.1.254<\/code> falls within this range.<\/p>\n\n\n\n

    Other networks either belong to the source IP range (like 192.168.1.0\/26<\/code> or 192.168.1.64\/26<\/code>) or to unrelated IP ranges (like 10.2.1.0\/16<\/code> or 172.16.100.0\/24<\/code>). Since 10.1.0.0\/16<\/code> is the only matching route, it is selected.<\/p>\n\n\n\n

    If multiple matches existed (e.g., both \/16<\/code> and \/24<\/code> networks covering the destination IP), the one with the longer prefix (e.g., \/24)<\/strong> would be chosen. This ensures efficient and accurate routing of packets through the most specific path available.<\/p>\n\n\n\n

    Thus, the packet from 192.168.1.254 to 10.1.1.254 travels via 10.1.0.0\/16<\/strong>.<\/p>\n\n\n\n

    \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

    If the source is 192.168.1.254 and the destination is 10.1.1.254, the given paths could be: 192.168.0.0\/2410.1.0.0\/16192.168.1.0\/26172.16.100.0\/24192.168.1.64\/2610.2.1.0\/16How does it travel? The Correct Answer and Explanation is: To determine how a packet travels from source IP 192.168.1.254 to destination IP 10.1.1.254, we need to analyze routing path selection using the Longest Prefix Match rule. This rule ensures […]<\/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-222397","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/222397","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=222397"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/222397\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=222397"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=222397"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=222397"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}