{"id":5845,"date":"2016-12-10T01:20:45","date_gmt":"2016-12-10T01:20:45","guid":{"rendered":"http:\/\/tapchicntt.com\/?p=5845"},"modified":"2016-12-08T16:23:33","modified_gmt":"2016-12-08T16:23:33","slug":"lam-sao-biet-nha-mang-co-bop-bang-thong-internet-cua-ban","status":"publish","type":"post","link":"https:\/\/tapchicntt.com\/lam-sao-biet-nha-mang-co-bop-bang-thong-internet-cua-ban\/","title":{"rendered":"L\u00e0m sao bi\u1ebft nh\u00e0 m\u1ea1ng c\u00f3 b\u00f3p b\u0103ng th\u00f4ng Internet c\u1ee7a b\u1ea1n?"},"content":{"rendered":"

T\u1ed1c \u0111\u1ed9 nh\u00e0 m\u1ea1ng \u0111\u01b0a ra th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ednh theo Megabits per Second (Mbps), \u0111i\u1ec1u n\u00e0y \u0111\u00e3 khi\u1ebfn nhi\u1ec1u ng\u01b0\u1eddi nh\u1ea7m l\u1eabn v\u1ec1 t\u1ed1c \u0111\u1ed9 download\/upload trong th\u1ef1c t\u1ebf. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd gi\u00fap b\u1ea1n ph\u00e2n bi\u1ec7t c\u00e1c kh\u00e1i ni\u1ec7m v\u00e0 c\u00e1ch \u0111\u1ec3 nh\u1eadn bi\u1ebft khi b\u1ecb nh\u00e0 m\u1ea1ng b\u00f3p b\u0103ng th\u00f4ng.<\/p>\n

\"L\u00e0m<\/p>\n

\u00a0<\/p>\n

\"L\u00e0m<\/p>\n

Kh\u00e1i ni\u1ec7m b\u0103ng th\u00f4ng<\/p>\n

B\u0103ng th\u00f4ng (bandwidth) l\u00e0 thu\u1eadt ng\u1eef d\u00f9ng \u0111\u1ec3 ch\u1ec9 l\u01b0\u1ee3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n qua thi\u1ebft b\u1ecb truy\u1ec1n d\u1eabn trong kho\u1ea3ng th\u1eddi m\u1ed9t gi\u00e2y. Kh\u00e1i ni\u1ec7m bandwidth \u0111\u1ea1i di\u1ec7n cho t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u c\u1ee7a m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n. Bandwidth c\u00e0ng l\u1edbn, t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u c\u00e0ng cao.<\/p>\n

Trong l\u0129nh v\u1ef1c m\u1ea1ng m\u00e1y t\u00ednh, bandwidth th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng bit tr\u00ean gi\u00e2y (bps). C\u00e1c m\u1ea1ng m\u00e1y t\u00ednh hi\u1ec7n nay th\u01b0\u1eddng c\u00f3 t\u1ed1c \u0111\u1ed9 l\u00ean \u0111\u1ebfn h\u00e0ng tri\u1ec7u bit tr\u00ean gi\u00e2y (megabits per second, hay Mbps), ho\u1eb7c th\u1eadm ch\u00ed h\u00e0ng t\u1ef7 bit tr\u00ean gi\u00e2y (gigabits per second, hay Gbps).<\/p>\n

Ph\u00e2n bi\u1ec7t v\u00e0 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa Mbps (Mb\/s) v\u00e0 MBps (MB\/s)<\/p>\n

– Ph\u00e2n bi\u1ec7t Mbps (Mb\/s) v\u00e0 MBps (MB\/s)<\/p>\n

M\u1eb7c d\u00f9, Mbps (Mb\/s) v\u00e0 MBps (MB\/s) ch\u1ec9 kh\u00e1c nhau \u1edf ch\u1eef\u00a0b\u00a0v\u00e0 ch\u1eef\u00a0B, ch\u00fang l\u00e0 hai kh\u00e1i ni\u1ec7m ho\u00e0n to\u00e0n kh\u00e1c nhau v\u00e0 d\u1ec5 b\u1ecb nh\u1ea7m l\u1eabn nh\u1ea5t.<\/p>\n

Byte v\u00e0 c\u00e1c \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n c\u1ee7a byte l\u00e0 \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 bi\u1ec3u th\u1ecb\u00a0dung l\u01b0\u1ee3ng c\u1ee7a thi\u1ebft b\u1ecb l\u01b0u tr\u1eef. Trong khi \u0111\u00f3, bit v\u00e0 c\u00e1c \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n c\u1ee7a bit ch\u1ee7 y\u1ebfu d\u00f9ng \u0111\u1ec3 m\u00f4 t\u1ea3\u00a0t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u\u00a0c\u1ee7a thi\u1ebft b\u1ecb l\u01b0u tr\u1eef v\u00e0 trong m\u1ea1ng vi\u1ec5n th\u00f4ng.<\/p>\n

– Quy \u0111\u1ed5i gi\u1eefa Mbps v\u00e0 MBps<\/p>\n

C\u00e1c nh\u00e0 m\u1ea1ng s\u1eed d\u1ee5ng \u0111\u01a1n v\u1ecb Mbps \u0111\u1ec3 quy \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 m\u1ea1ng, nh\u01b0ng c\u00e1c ph\u1ea7n m\u1ec1m download (Internet Download Manager, FlashGet\u2026) hay tr\u00ecnh duy\u1ec7t web (Chrome, Firefox\u2026) l\u1ea1i t\u00ednh t\u1ed1c \u0111\u1ed9 download b\u1eb1ng MBps.<\/p>\n

Do v\u1eady, \u0111\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 download c\u1ee7a \u0111\u01b0\u1eddng truy\u1ec1n, b\u1ea1n c\u1ea7n quy \u0111\u1ed5i t\u1eeb Mbps sang MBps. C\u00f3 hai c\u00e1ch \u0111\u1ec3 b\u1ea1n quy \u0111\u1ed5i: th\u1ee7 c\u00f4ng v\u00e0 b\u1eb1ng c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3.<\/p>\n

C\u00e1ch 1: Quy \u0111\u1ed5i gi\u1eefa Mbps v\u00e0 MBps th\u1ee7 c\u00f4ng<\/p>\n

T\u1ef7 l\u1ec7 quy \u0111\u1ed5i gi\u1eefa Mbps v\u00e0 MBps \u0111\u01b0\u1ee3c c\u00e1c t\u1ed5 ch\u1ee9c ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh nh\u01b0 sau:<\/p>\n

– 1 byte = 8 bits<\/p>\n

– 1 bit\u00a0 = (1\/8) bytes<\/p>\n

– 1 bit\u00a0 = 0.125 bytes<\/p>\n

D\u1ef1a tr\u00ean t\u1ef7 l\u1ec7 quy \u0111\u1ed5i tr\u00ean, n\u1ebfu mu\u1ed1n \u0111\u1ed5i t\u1eeb bit sang byte, b\u1ea1n c\u1ea7n chia\u00a0gi\u00e1 tr\u1ecb bit\u00a0cho\u00a08\u00a0hay nh\u00e2n gi\u00e1 tr\u1ecb \u0111\u00f3 v\u1edbi 0.125. Ch\u1eb3ng h\u1ea1n, \u0111\u01b0\u1eddng truy\u1ec1n Internet c\u1ee7a ch\u00fang t\u00f4i c\u00f3 t\u1ed1c \u0111\u1ed9 45 Mbps, t\u1ed1c \u0111\u1ed9 theo l\u00fd thuy\u1ebft c\u1ee7a \u0111\u01b0\u1eddng truy\u1ec1n s\u1ebd l\u00e0 45\/8 hay 45 * 0.125 = 5.625 MBps.<\/p>\n

C\u00e1ch 2: Quy \u0111\u1ed5i gi\u1eefa Mbps v\u00e0 MBps b\u1eb1ng c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3<\/p>\n

N\u1ebfu c\u1ea3m th\u1ea5y vi\u1ec7c quy \u0111\u1ed5i th\u1ee7 c\u00f4ng ph\u1ee9c t\u1ea1p v\u00e0 m\u1ea5t nhi\u1ec1u th\u1eddi gian, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ea3ng t\u1ef7 l\u1ec7 quy \u0111\u1ed5i gi\u1eefa hai \u0111\u01a1n v\u1ecb n\u00e0y t\u1ea1i \u0111\u1ecba ch\u1ec9\u00a0https:\/\/www.gbmb.org\/mbps-to-mbs.<\/p>\n<\/p>\n

\"L\u00e0m<\/p>\n

Tr\u01b0\u1eddng h\u1ee3p, b\u1ea1n kh\u00f4ng t\u00ecm th\u1ea5y t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i ph\u00f9 h\u1ee3p v\u1edbi t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a b\u1ea1n, h\u00e3y s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 chuy\u1ec3n \u0111\u1ed5i \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf \u0111\u1ea7u trang. \u0110\u1ec3 quy \u0111\u1ed5i, b\u1ea1n ch\u1ec9 c\u1ea7n nh\u1eadp gi\u00e1 tr\u1ecb\u00a0Mbps\u00a0v\u00e0o \u00f4 tr\u1ed1ng v\u00e0 nh\u1ea5n n\u00fat\u00a0Convert.<\/p>\n<\/p>\n

\"L\u00e0m<\/p>\n

C\u00e1c b\u01b0\u1edbc ki\u1ec3m tra t\u1ed1c \u0111\u1ed9 th\u1ef1c c\u1ee7a \u0111\u01b0\u1eddng truy\u1ec1n<\/p>\n

\u0110\u1ebfn \u0111\u00e2y, b\u1ea1n \u0111\u00e3 bi\u1ebft bandwidth l\u00e0 g\u00ec, c\u00e1ch ph\u00e2n bi\u1ec7t v\u00e0 quy \u0111\u1ed5i gi\u1eefa Mbps v\u00e0 MBps. Vi\u1ec7c ti\u1ebfp theo l\u00e0 l\u00e0m th\u1ebf n\u00e0o bi\u1ebft \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a b\u1ea1n c\u00f3 t\u1ed1c \u0111\u1ed9 \u0111\u00fang nh\u01b0 nh\u1eefng g\u00ec nh\u00e0 cung c\u1ea5p cam k\u1ebft? R\u1ea5t \u0111\u01a1n gi\u1ea3n, b\u1ea1n ch\u1ec9 c\u1ea7n th\u1ef1c hi\u1ec7n l\u1ea7n l\u01b0\u1ee3t c\u00e1c b\u01b0\u1edbc nh\u01b0 sau:<\/p>\n

B\u01b0\u1edbc 1:\u00a0Chu\u1ea9n b\u1ecb m\u1ed9t m\u00e1y t\u00ednh, m\u1ed9t s\u1ee3i c\u00e1p m\u1ea1ng v\u00e0 m\u1ed9t tr\u00ecnh duy\u1ec7t web b\u1ea5t k\u1ef3 nh\u01b0 Chrome, C\u1ed1c C\u1ed1c, Firefox\u2026<\/p>\n

B\u01b0\u1edbc 2:\u00a0T\u00ecm m\u1ed9t m\u00e1y ch\u1ee7 \u0111\u1eb7t t\u1ea1i Vi\u1ec7t Nam v\u00e0 cho ph\u00e9p download kh\u00f4ng gi\u1edbi h\u1ea1n b\u0103ng th\u00f4ng. Th\u00f4ng th\u01b0\u1eddng, c\u00e1c m\u00e1y ch\u1ee7 game l\u00e0 nh\u1eefng m\u00e1y ch\u1ee7 cho ph\u00e9p t\u1ea3i kh\u00f4ng gi\u1edbi h\u1ea1n bandwidth b\u1edfi c\u00e1c nh\u00e0 ph\u00e1t h\u00e0nh game lu\u00f4n lu\u00f4n mu\u1ed1n s\u1ea3n ph\u1ea9m c\u1ee7a h\u1ecd nhanh ch\u00f3ng \u0111\u1ebfn tay c\u00e1c game th\u1ee7.<\/p>\n

B\u01b0\u1edbc 3:\u00a0K\u1ebft n\u1ed1i m\u00e1y t\u00ednh v\u1edbi router th\u00f4ng qua c\u00e1p m\u1ea1ng. B\u1ea1n kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng WiFi b\u1edfi k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a r\u1ea5t nhi\u1ec1u y\u1ebfu t\u1ed1 v\u00e0 t\u1ed1c \u0111\u1ed9 c\u1ee7a n\u00f3 th\u01b0\u1eddng ch\u1ec9 \u0111\u1ea1t \u1edf m\u1ee9c 80 \u2013 90% so v\u1edbi k\u1ebft n\u1ed1i c\u00f3 d\u00e2y.<\/p>\n<\/p>\n

\"L\u00e0m<\/p>\n

B\u01b0\u1edbc 4:\u00a0Truy c\u1eadp v\u00e0o trang web \u0111\u00e3 t\u00ecm \u0111\u01b0\u1ee3c \u1edf tr\u00ean v\u00e0 ti\u1ebfn h\u00e0nh t\u1ea3i file v\u1ec1.<\/p>\n

B\u01b0\u1edbc 5:\u00a0Quan s\u00e1t t\u1ed1c \u0111\u1ed9 download v\u00e0 so s\u00e1nh n\u00f3 v\u1edbi t\u1ed1c \u0111\u1ed9 l\u00fd thuy\u1ebft b\u1ea1n \u0111\u00e3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c. Th\u1ef1c t\u1ebf cho th\u1ea5y t\u1ed1c \u0111\u1ed9 l\u00fd thuy\u1ebft s\u1ebd kh\u00f4ng gi\u1ed1ng nh\u01b0 t\u1ed1c \u0111\u1ed9 th\u1ef1c v\u00ec nhi\u1ec1u l\u00fd do. Do v\u1eady, n\u1ebfu hai th\u00f4ng s\u1ed1 n\u00e0y ch\u00eanh l\u1ec7nh kh\u00f4ng nhi\u1ec1u, ngh\u0129a l\u00e0 nh\u00e0 m\u1ea1ng \u0111\u00e3 th\u1ef1c hi\u1ec7n \u0111\u00fang cam k\u1ebft v\u1edbi b\u1ea1n. Ng\u01b0\u1ee3c l\u1ea1i, b\u1ea1n c\u1ea7n li\u00ean h\u1ec7 v\u1edbi h\u1ecd \u0111\u1ec3 y\u00eau c\u1ea7u ki\u1ec3m tra v\u00e0 x\u1eed l\u00fd.<\/p>\n<\/p>\n

\"L\u00e0m<\/p>\n

\u00a0<\/p>\n

\"L\u00e0m<\/p>\n

V\u00ed d\u1ee5, \u0111\u01b0\u1eddng truy\u1ec1n Internet c\u1ee7a ch\u00fang t\u00f4i c\u00f3 t\u1ed1c \u0111\u1ed9 45 Mbps theo cam k\u1ebft t\u1eeb nh\u00e0 m\u1ea1ng, v\u00e0 nh\u01b0 \u0111\u00e3 t\u00ednh to\u00e1n, t\u1ed1c \u0111\u1ed9 l\u00fd thuy\u1ebft \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ebd l\u00e0 5.625 MBps. Th\u1ef1c t\u1ebf t\u1ea3i file, ch\u00fang t\u00f4i nh\u1eadn th\u1ea5y t\u1ed1c \u0111\u1ed9 th\u1ef1c c\u1ee7a \u0111\u01b0\u1eddng truy\u1ec1n dao \u0111\u1ed9ng t\u1eeb 4.7 \u2013 5.4 MBps. K\u1ebft qu\u1ea3 n\u00e0y ch\u00eanh l\u1ec7ch kh\u00f4ng nhi\u1ec1u so v\u1edbi t\u1ed1c \u0111\u1ed9 l\u00fd thuy\u1ebft, ngh\u0129a l\u00e0 nh\u00e0 m\u1ea1ng \u0111\u00e3 th\u1ef1c hi\u1ec7n \u0111\u00fang cam k\u1ebft v\u1edbi ch\u00fang t\u00f4i.<\/p>\n

L\u01b0u \u00fd:\u00a0\u0110\u1ec3 k\u1ebft qu\u1ea3 ki\u1ec3m tra \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c nh\u1ea5t, b\u1ea1n n\u00ean ng\u1eaft t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111ang k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng c\u1ee7a b\u1ea1n. Vi\u1ec7c n\u00e0y nh\u1eb1m h\u1ea1n ch\u1ebf t\u1ed1i \u0111a vi\u1ec7c c\u00e1c thi\u1ebft b\u1ecb \u0111\u00f3 chi\u1ebfm d\u1ee5ng b\u0103ng th\u00f4ng. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ea1n c\u0169ng n\u00ean ch\u1ecdn th\u1eddi \u0111i\u1ec3m c\u00f3 \u00edt ng\u01b0\u1eddi t\u1ea3i file \u0111\u1ec3 tr\u00e1nh vi\u1ec7c m\u00e1y ch\u1ee7 qu\u00e1 t\u1ea3i.<\/p>\n<\/p>\n

Theo VnReview<\/p>\n","protected":false},"excerpt":{"rendered":"

T\u1ed1c \u0111\u1ed9 nh\u00e0 m\u1ea1ng \u0111\u01b0a ra th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ednh theo Megabits per Second (Mbps), \u0111i\u1ec1u n\u00e0y \u0111\u00e3 khi\u1ebfn nhi\u1ec1u ng\u01b0\u1eddi […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[195],"tags":[],"class_list":["post-5845","post","type-post","status-publish","format-standard","hentry","category-windows"],"views":486,"_links":{"self":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/5845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/comments?post=5845"}],"version-history":[{"count":0,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/5845\/revisions"}],"wp:attachment":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/media?parent=5845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/categories?post=5845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/tags?post=5845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}