{"id":478154,"date":"2023-08-09T09:28:14","date_gmt":"2023-08-09T09:28:14","guid":{"rendered":""},"modified":"2023-09-05T11:16:11","modified_gmt":"2023-09-05T11:16:11","slug":"network-hub","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/network-hub\/","title":{"rendered":"Trung t\u00e2m m\u1ea1ng"},"content":{"rendered":"<p>Hub m\u1ea1ng l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i nhi\u1ec1u thi\u1ebft b\u1ecb Ethernet v\u1edbi nhau, khi\u1ebfn ch\u00fang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ph\u00e2n \u0111o\u1ea1n m\u1ea1ng duy nh\u1ea5t. N\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf l\u1edbp v\u1eadt l\u00fd c\u1ee7a m\u00f4 h\u00ecnh OSI v\u00e0 kh\u00f4ng l\u1ecdc d\u1eef li\u1ec7u, chuy\u1ec3n ti\u1ebfp c\u00e1c g\u00f3i d\u1eef li\u1ec7u \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p m\u1ed9t kh\u00e1m ph\u00e1 chuy\u00ean s\u00e2u v\u1ec1 c\u00e1c trung t\u00e2m m\u1ea1ng.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a Network Hub v\u00e0 s\u1ef1 \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean v\u1ec1 n\u00f3<\/h2>\n<p>Hub m\u1ea1ng c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a c\u00f4ng ngh\u1ec7 Ethernet. N\u00f3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n v\u00e0o nh\u1eefng n\u0103m 1980 nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf r\u1ebb ti\u1ec1n cho c\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch, cho ph\u00e9p c\u00e1c m\u00e1y t\u00ednh trong M\u1ea1ng c\u1ee5c b\u1ed9 (LAN) li\u00ean l\u1ea1c v\u1edbi nhau. Hub \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong giai \u0111o\u1ea1n \u0111\u1ea7u ph\u00e1t tri\u1ec3n c\u1ee7a m\u1ea1ng m\u00e1y t\u00ednh, gi\u00fap l\u00e0m cho c\u00f4ng ngh\u1ec7 m\u1ea1ng tr\u1edf n\u00ean d\u1ec5 ti\u1ebfp c\u1eadn h\u01a1n v\u00e0 gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng h\u01a1n.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 Network Hub<\/h2>\n<h3>M\u1edf r\u1ed9ng Trung t\u00e2m m\u1ea1ng ch\u1ee7 \u0111\u1ec1<\/h3>\n<p>C\u00e1c trung t\u00e2m m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 c\u00e1c b\u1ed9 l\u1eb7p \u0111a c\u1ed5ng l\u1ea5y d\u1eef li\u1ec7u \u0111\u1ebfn v\u00e0 ph\u00e1t n\u00f3 \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i kh\u00e1c. Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ea1ng, c\u00e1c hub kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng g\u1eedi d\u1eef li\u1ec7u c\u00f3 ch\u1ecdn l\u1ecdc \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3. S\u1ef1 thi\u1ebfu ch\u1ecdn l\u1ecdc n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra s\u1ef1 k\u00e9m hi\u1ec7u qu\u1ea3 c\u1ee7a m\u1ea1ng nh\u01b0ng ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u k\u1ebft n\u1ed1i c\u01a1 b\u1ea3n.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a Hub m\u1ea1ng<\/h2>\n<h3>C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Network Hub<\/h3>\n<p>M\u1ed9t trung t\u00e2m m\u1ea1ng bao g\u1ed3m nhi\u1ec1u c\u1ed5ng, ngu\u1ed3n \u0111i\u1ec7n b\u00ean trong v\u00e0 logic ph\u00e1t s\u00f3ng \u0111\u01a1n gi\u1ea3n. Khi m\u1ed9t g\u00f3i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c nh\u1eadn t\u1ea1i m\u1ed9t c\u1ed5ng, n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c sao ch\u00e9p v\u00e0 g\u1eedi \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng kh\u00e1c. Kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng l\u1ecdc ho\u1eb7c \u0111\u1ecbnh tuy\u1ebfn c\u0169ng nh\u01b0 kh\u00f4ng c\u00f3 tr\u00ed th\u00f4ng minh \u0111\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i. Xung \u0111\u1ed9t v\u00e0 tranh ch\u1ea5p l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn v\u00ec t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ec1u c\u00f3 chung \u0111\u01b0\u1eddng truy\u1ec1n th\u00f4ng.<\/p>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a Network Hub<\/h2>\n<ul>\n<li><strong>S\u1ef1 \u0111\u01a1n gi\u1ea3n<\/strong>: D\u1ec5 d\u00e0ng c\u00e0i \u0111\u1eb7t v\u00e0 s\u1eed d\u1ee5ng.<\/li>\n<li><strong>Gi\u00e1 th\u1ea5p<\/strong>: N\u00f3i chung r\u1ebb h\u01a1n so v\u1edbi thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch.<\/li>\n<li><strong>Kh\u00f4ng c\u1ea7n qu\u1ea3n l\u00fd<\/strong>: Ch\u1ee9c n\u0103ng kh\u00f4ng c\u1ea7n c\u1ea5u h\u00ecnh.<\/li>\n<li><strong>Thi\u1ebfu t\u00ednh ch\u1ecdn l\u1ecdc<\/strong>: G\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c c\u1ed5ng, g\u00e2y ra s\u1ef1 k\u00e9m hi\u1ec7u qu\u1ea3.<\/li>\n<li><strong>Mi\u1ec1n va ch\u1ea1m<\/strong>: T\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ec1u d\u00f9ng chung b\u0103ng th\u00f4ng, d\u1eabn \u0111\u1ebfn xung \u0111\u1ed9t.<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i trung t\u00e2m m\u1ea1ng<\/h2>\n<p>Ch\u1ee7 y\u1ebfu c\u00f3 hai lo\u1ea1i trung t\u00e2m m\u1ea1ng:<\/p>\n<ol>\n<li>\n<p><strong>Trung t\u00e2m ho\u1ea1t \u0111\u1ed9ng<\/strong>:<\/p>\n<ul>\n<li>Khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u.<\/li>\n<li>Th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi ngu\u1ed3n \u0111i\u1ec7n b\u00ean ngo\u00e0i.<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>Trung t\u00e2m th\u1ee5 \u0111\u1ed9ng<\/strong>:<\/p>\n<ul>\n<li>Kh\u00f4ng khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u.<\/li>\n<li>Kh\u00f4ng y\u00eau c\u1ea7u ngu\u1ed3n \u0111i\u1ec7n b\u00ean ngo\u00e0i.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2>C\u00e1c c\u00e1ch s\u1eed d\u1ee5ng Network Hub, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p c\u1ee7a ch\u00fang<\/h2>\n<p>C\u00e1c trung t\u00e2m m\u1ea1ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng nh\u1ecf. Tuy nhi\u00ean, nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a ch\u00fang, nh\u01b0 t\u1ea1o c\u00e1c mi\u1ec1n xung \u0111\u1ed9t, c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 k\u00e9m hi\u1ec7u qu\u1ea3.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p:<\/h3>\n<ul>\n<li><strong>S\u1ef1 va ch\u1ea1m<\/strong>: S\u1eed d\u1ee5ng switch thay v\u00ec hub \u0111\u1ec3 gi\u1ea3m va ch\u1ea1m.<\/li>\n<li><strong>M\u1ed1i quan t\u00e2m v\u1ec1 b\u1ea3o m\u1eadt<\/strong>: Tri\u1ec3n khai c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt m\u1ea1ng v\u00ec c\u00e1c trung t\u00e2m kh\u00f4ng l\u1ecdc d\u1eef li\u1ec7u.<\/li>\n<li><strong>Ch\u1ee9c n\u0103ng h\u1ea1n ch\u1ebf<\/strong>: N\u00e2ng c\u1ea5p l\u00ean switch \u0111\u1ec3 c\u00f3 nhi\u1ec1u t\u00ednh n\u0103ng n\u00e2ng cao h\u01a1n.<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>T\u00ednh n\u0103ng<\/th>\n<th>trung t\u00e2m<\/th>\n<th>C\u00f4ng t\u1eafc<\/th>\n<th>B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>L\u1edbp<\/td>\n<td>Thu\u1ed9c v\u1eadt ch\u1ea5t<\/td>\n<td>Li\u00ean k\u1ebft d\u1eef li\u1ec7u<\/td>\n<td>M\u1ea1ng<\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh ch\u1ecdn l\u1ecdc<\/td>\n<td>KH\u00d4NG<\/td>\n<td>\u0110\u00fang<\/td>\n<td>\u0110\u00fang<\/td>\n<\/tr>\n<tr>\n<td>Tr\u1ecb gi\u00e1<\/td>\n<td>Th\u1ea5p<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Cao<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/td>\n<td>Th\u1ea5p<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn Network Hub<\/h2>\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c trung t\u00e2m m\u1ea1ng \u0111ang gi\u1ea3m d\u1ea7n khi c\u00e1c c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn h\u01a1n nh\u01b0 b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn ng\u00e0y c\u00e0ng c\u00f3 gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng h\u01a1n. M\u1ea1ng trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 ch\u1ee9ng ki\u1ebfn vi\u1ec7c lo\u1ea1i b\u1ecf d\u1ea7n c\u00e1c trung t\u00e2m \u0111\u1ec3 chuy\u1ec3n sang s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng minh h\u01a1n, hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi Network Hub<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7, cung c\u1ea5p nhi\u1ec1u l\u1ee3i \u00edch kh\u00e1c nhau nh\u01b0 t\u00ednh \u1ea9n danh v\u00e0 b\u1ed9 nh\u1edb \u0111\u1ec7m. M\u1eb7c d\u00f9 trung t\u00e2m m\u1ea1ng kh\u00f4ng th\u1ec3 t\u01b0\u01a1ng t\u00e1c tr\u1ef1c ti\u1ebfp v\u1edbi m\u00e1y ch\u1ee7 proxy nh\u01b0ng c\u00e1c trung t\u00e2m c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng n\u01a1i s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 proxy. Ch\u00fang ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t \u0111i\u1ec3m k\u1ebft n\u1ed1i m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y ch\u1ee7 proxy.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.ieee.org\/\" target=\"_new\" rel=\"noopener nofollow\">Ti\u00eau chu\u1ea9n IEEE cho Ethernet<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/\" target=\"_new\" rel=\"noopener nofollow\">H\u01b0\u1edbng d\u1eabn c\u1ee7a Cisco v\u1ec1 Hub m\u1ea1ng v\u00e0 B\u1ed9 chuy\u1ec3n m\u1ea1ch<\/a><\/li>\n<li><a href=\"https:\/\/www.comptia.org\/\" target=\"_new\" rel=\"noopener nofollow\">Ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 m\u1ea1ng t\u1eeb CompTIA<\/a><\/li>\n<\/ul>\n<p>B\u00e0i vi\u1ebft n\u00e0y \u0111\u01b0\u1ee3c mang \u0111\u1ebfn cho b\u1ea1n b\u1edfi OneProxy (oneproxy.pro), nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy \u0111\u00e1ng tin c\u1eady c\u1ee7a b\u1ea1n. Kh\u00e1m ph\u00e1 th\u00eam v\u1ec1 m\u1ea1ng v\u00e0 m\u00e1y ch\u1ee7 proxy tr\u00ean trang web c\u1ee7a ch\u00fang t\u00f4i.<\/p>","protected":false},"featured_media":478155,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478154","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Network Hub<\/mark>","faq_items":[{"question":"What is a Network Hub?","answer":"<p>A network hub is a device that connects multiple Ethernet devices together, making them act as a single network segment. It operates at the physical layer of the OSI model, forwarding incoming data packets to all ports without filtering.<\/p>"},{"question":"What is the History of the Network Hub?","answer":"<p>The network hub was developed in the 1980s as an inexpensive alternative to switches, allowing computers in a Local Area Network (LAN) to communicate with each other. It played a crucial role in the early development of computer networks.<\/p>"},{"question":"How Does a Network Hub Work?","answer":"<p>A network hub takes incoming data and broadcasts it to all other connected devices. When a data packet is received at one port, it is replicated and sent to all other ports. There is no intelligence to differentiate between connected devices, so collision and contention are common issues.<\/p>"},{"question":"What are the Key Features of a Network Hub?","answer":"<p>The key features of a network hub include simplicity, low cost, lack of selectivity, and the creation of a collision domain. It's easy to set up, functions without configuration, but sends data to all ports, leading to potential inefficiency.<\/p>"},{"question":"What Types of Network Hub Exist?","answer":"<p>There are two main types of network hubs: Active Hubs, which amplify the signal and usually require external power, and Passive Hubs, which do not amplify the signal and do not require external power.<\/p>"},{"question":"What are the Problems and Solutions Related to the Use of Network Hub?","answer":"<p>Problems associated with network hubs include collisions, security concerns, and limited functionality. Solutions may involve using a switch instead of a hub to reduce collisions, implementing network security protocols, and upgrading to a switch for more advanced features.<\/p>"},{"question":"How Do Network Hubs Compare with Similar Devices?","answer":"<p>Network hubs operate at the physical layer, lack selectivity, and are generally cheaper and less complex than switches and routers. Unlike switches and routers, hubs do not have the ability to selectively send data to specific devices.<\/p>"},{"question":"What are the Future Perspectives Related to Network Hub?","answer":"<p>The use of network hubs is declining as more advanced technologies like switches and routers become more affordable. The future may see the phasing out of hubs entirely in favor of smarter, more efficient devices.<\/p>"},{"question":"How are Proxy Servers Associated with Network Hubs?","answer":"<p>While network hubs can't directly interact with proxy servers, they can be part of a network infrastructure where proxy servers are utilized. Hubs simply act as a connection point without influencing how the proxy server functions.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/478154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/478154\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/478155"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=478154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}