{"id":230401,"date":"2025-10-13T23:00:27","date_gmt":"2025-10-13T17:30:27","guid":{"rendered":"https:\/\/www.oliveboard.in\/blog\/?p=230401"},"modified":"2025-10-13T23:00:31","modified_gmt":"2025-10-13T17:30:31","slug":"networking-devices-and-protocols-for-ssc-cgl","status":"publish","type":"post","link":"https:\/\/www.oliveboard.in\/blog\/networking-devices-and-protocols-for-ssc-cgl\/","title":{"rendered":"Networking Devices and Protocols for SSC CGL Tier 2"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_77 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of content<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.oliveboard.in\/blog\/networking-devices-and-protocols-for-ssc-cgl\/#What_is_a_Network\" >What is a Network?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.oliveboard.in\/blog\/networking-devices-and-protocols-for-ssc-cgl\/#Types_of_Networks\" >Types of Networks<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.oliveboard.in\/blog\/networking-devices-and-protocols-for-ssc-cgl\/#Networking_Devices\" >Networking Devices<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.oliveboard.in\/blog\/networking-devices-and-protocols-for-ssc-cgl\/#Networking_Protocols\" >Networking Protocols<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.oliveboard.in\/blog\/networking-devices-and-protocols-for-ssc-cgl\/#Key_Takeaways\" >Key Takeaways:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.oliveboard.in\/blog\/networking-devices-and-protocols-for-ssc-cgl\/#FAQs\" >FAQs<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Understanding networking devices and protocols is important for SSC CGL Tier 2, especially for questions in Computer Awareness. This blog covers the key devices, their functions, and common protocols in a simple way.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-a-network\"><span class=\"ez-toc-section\" id=\"What_is_a_Network\"><\/span>What is a Network?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A network is a system that connects two or more computers or devices to share resources like data, software, and internet. Networking is essential for communication in offices, schools, and organizations.<\/p>\n\n\n\n<div class=\"wp-block-buttons alignwide is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/ssc-cgl-previous-year-papers\/?ref=contmk-db\" target=\"_blank\" rel=\"noreferrer noopener\">Download SSC CGL Tier 2 Previous Year papers for Free<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-types-of-networks\"><span class=\"ez-toc-section\" id=\"Types_of_Networks\"><\/span>Types of Networks<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Networks can be classified based on area and size:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LAN (Local Area Network):<\/strong> Covers a small area like a building.<\/li>\n\n\n\n<li><strong>WAN (Wide Area Network):<\/strong> Covers a large area like a city or country.<\/li>\n\n\n\n<li><strong>MAN (Metropolitan Area Network):<\/strong> Covers a city or town.<\/li>\n\n\n\n<li><strong>PAN (Personal Area Network):<\/strong> Covers a personal device area, like Bluetooth connections.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/ssc-cgl-free-pyp-kit\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">Download Complete SSC CGL Tier 2 PYP Kit E-book for free<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-networking-devices\"><span class=\"ez-toc-section\" id=\"Networking_Devices\"><\/span>Networking Devices<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Networking devices are used to connect computers and manage data transfer. Here are the key devices for <a href=\"https:\/\/www.oliveboard.in\/ssc-cgl-notification\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL Exam<\/a> Tier 2:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong><strong>Device<\/strong><\/strong><\/td><td><strong><strong>Function<\/strong><\/strong><\/td><td><strong><strong>OSI Layer<\/strong><\/strong><\/td><td><strong><strong>Key Points<\/strong><\/strong><\/td><\/tr><tr><td><strong>Hub<\/strong><\/td><td>Connects multiple computers in a network.<\/td><td>Layer 1 \u2013 Physical Layer<\/td><td>Broadcasts data to all devices; least intelligent device.<\/td><\/tr><tr><td><strong>Switch<\/strong><\/td><td>Connects multiple devices and forwards data to the intended device only.<\/td><td>Layer 2 \u2013 Data Link Layer<\/td><td>More efficient than a hub; reduces data collisions.<\/td><\/tr><tr><td><strong>Router<\/strong><\/td><td>Connects different networks and routes data between them.<\/td><td>Layer 3 \u2013 Network Layer<\/td><td>Used to connect LAN with the Internet; makes routing decisions.<\/td><\/tr><tr><td><strong>Modem<\/strong><\/td><td>Converts digital signals to analog and vice versa.<\/td><td>\u2014<\/td><td>Enables internet access over telephone lines; stands for <em>Modulator-Demodulator<\/em>.<\/td><\/tr><tr><td><strong>Access Point (AP)<\/strong><\/td><td>Provides wireless access to a network.<\/td><td>Layer 2 \u2013 Data Link Layer<\/td><td>Connects Wi-Fi-enabled devices to a wired LAN.<\/td><\/tr><tr><td><strong>Repeater<\/strong><\/td><td>Strengthens and extends the range of network signals.<\/td><td>Layer 1 \u2013 Physical Layer<\/td><td>Used to regenerate weak signals over long distances.<\/td><\/tr><tr><td><strong>Firewall<\/strong><\/td><td>Monitors and controls network traffic for security.<\/td><td>Layer 3 &amp; above<\/td><td>Protects network from unauthorized access and threats.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/ssc-typing-test\/?ref=contmk-db\" target=\"_blank\" rel=\"noreferrer noopener\">Attempt SSC CGL Typing Test for free<\/a><\/div>\n<\/div>\n\n\n\n<p>Also check out: <a href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-typing-test-error\/\"><strong>SSC CGL Typing Test Errors<\/strong><\/a> to minimize your errors in Data Entry Speed Test.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-networking-protocols\"><span class=\"ez-toc-section\" id=\"Networking_Protocols\"><\/span>Networking Protocols<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Protocols are rules that define how data is transmitted over a network. Common protocols for SSC CGL Tier 2 include:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Protocol<\/strong><\/td><td><strong>Full Form<\/strong><\/td><td><strong>Function<\/strong><\/td><\/tr><tr><td>TCP<\/td><td>Transmission Control Protocol<\/td><td>Ensures reliable data transfer<\/td><\/tr><tr><td>IP<\/td><td>Internet Protocol<\/td><td>Routes data packets across networks<\/td><\/tr><tr><td>HTTP<\/td><td>HyperText Transfer Protocol<\/td><td>Used to browse websites<\/td><\/tr><tr><td>HTTPS<\/td><td>HyperText Transfer Protocol Secure<\/td><td>Secure browsing using encryption<\/td><\/tr><tr><td>FTP<\/td><td>File Transfer Protocol<\/td><td>Transfers files between computers<\/td><\/tr><tr><td>SMTP<\/td><td>Simple Mail Transfer Protocol<\/td><td>Sends emails<\/td><\/tr><tr><td>POP3<\/td><td>Post Office Protocol<\/td><td>Receives emails<\/td><\/tr><tr><td>DHCP<\/td><td>Dynamic Host Configuration Protocol<\/td><td>Assigns IP addresses automatically<\/td><\/tr><tr><td>DNS<\/td><td>Domain Name System<\/td><td>Converts domain names into IP addresses<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-computer-awareness\/?ref=conmk-blog\" target=\"_blank\" rel=\"noreferrer noopener\">Read full blog on computer awareness for sSC CGL Tier 2 <\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-takeaways\"><span class=\"ez-toc-section\" id=\"Key_Takeaways\"><\/span>Key Takeaways:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Below are the key takeaways:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hub, switch, and router are common networking devices.<\/li>\n\n\n\n<li>TCP\/IP is the backbone protocol for the Internet.<\/li>\n\n\n\n<li>HTTP\/HTTPS are widely asked in SSC CGL computer awareness.<\/li>\n\n\n\n<li>Understanding OSI layers helps in solving networking questions.<\/li>\n\n\n\n<li>Firewalls and access points are important for security and wireless networks.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/ssc-cgl\/?ref=contmk-db\" target=\"_blank\" rel=\"noreferrer noopener\">Explore all SSC CGL Courses Here<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1760103148407\"><strong class=\"schema-faq-question\"><strong>Q1. What is the function of a router in a computer network?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. A router connects different networks and routes data packets between them. It works at the Network Layer (Layer 3) of the OSI model.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760103181302\"><strong class=\"schema-faq-question\"><strong>Q2. Which networking device works at the Physical Layer of the OSI model?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. Devices like Hub and Repeater operate at the Physical Layer (Layer 1).<br\/><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760103185835\"><strong class=\"schema-faq-question\"><strong>Q3. What is the difference between a hub and a switch?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. A hub broadcasts data to all connected devices, while a <strong>switch<\/strong> sends data only to the intended device, making it more efficient.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760103189652\"><strong class=\"schema-faq-question\"><strong>Q4. What does a modem do in a network?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. A modem converts digital signals to analog and vice versa, allowing internet connectivity through telephone lines.<br\/><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1760103192669\"><strong class=\"schema-faq-question\"><strong>Q5. What is the use of a firewall?<\/strong><\/strong> <p class=\"schema-faq-answer\">Ans. A firewall monitors and controls network traffic to protect systems from unauthorized access and cyber threats.<\/p> <\/div> <\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 wp-block-latest-posts\"><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-certificate-format\/\">SSC CGL Certificate Format 2026 for OBC, EWS and More<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-weightage-tier-1-most-important-topics-chapters\/\">SSC CGL Topic Wise Weightage 2026 for Tier 1, Most Important Chapters List<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-english-questions\/\">SSC CGL English Questions with Answers, Download Free PDF<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/how-many-hours-to-study-for-ssc-cgl\/\">How many hours should you study to clear SSC CGL 2026?<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/how-to-clear-ssc-cgl\/\">How to Clear SSC CGL in First Attempt 2026? Check Details<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-cgl-aso-vs-ssc-cgl-jso\/\">SSC CGL ASO vs SSC CGL JSO, Which is a Better Job?<\/a><\/li>\n<\/ul>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>Understanding networking devices and protocols is important for SSC CGL Tier 2, especially for questions in Computer Awareness. This blog<\/p>\n","protected":false},"author":65,"featured_media":230553,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-230401","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.6 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Networking Devices and Protocols for SSC CGL Tier 2 - Oliveboard<\/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.oliveboard.in\/blog\/networking-devices-and-protocols-for-ssc-cgl\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Networking Devices and Protocols for SSC CGL Tier 2\" \/>\n<meta property=\"og:description\" content=\"Understanding networking devices and protocols is important for SSC CGL Tier 2, especially for questions in Computer Awareness. 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