{"id":10370,"date":"2021-11-21T19:55:02","date_gmt":"2021-11-21T12:55:02","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=10370"},"modified":"2021-11-21T20:11:19","modified_gmt":"2021-11-21T13:11:19","slug":"dien-thoai-phai-lam-sao-de-bao-mat-thong-tin","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/dien-thoai-phai-lam-sao-de-bao-mat-thong-tin\/","title":{"rendered":"\u0110i\u1ec7n tho\u1ea1i ph\u1ea3i l\u00e0m sao \u0111\u1ec3 b\u1ea3o m\u1eadt th\u00f4ng tin?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y, \u0111i\u1ec7n tho\u1ea1i l\u00e0 ph\u01b0\u01a1ng ti\u1ec7n kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 m\u1ecdi ng\u01b0\u1eddi li\u00ean h\u1ec7 v\u1edbi nhau. N\u1ed9i dung kh\u00f4ng quan tr\u1ecdng trong \u0111i\u1ec7n tho\u1ea1i, d\u00f9 b\u1ecb ng\u01b0\u1eddi kh\u00e1c nghe tr\u1ed9m c\u0169ng kh\u00f4ng sao. N\u1ebfu nh\u01b0 l\u00e0 tin c\u01a1 m\u1eadt b\u1ecb nghe tr\u1ed9m th\u00ec h\u1eadu qu\u1ea3 kh\u00f4ng th\u1ec3 l\u01b0\u1eddng \u0111\u01b0\u1ee3c. L\u00fac n\u00e0y, vi\u1ec7c s\u1eed d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i b\u1ea3o m\u1eadt \u0111\u1ec3 b\u1ea3o m\u1eadt th\u00f4ng tin s\u1ebd tr\u1edf n\u00ean c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec7n tho\u1ea1i ch\u00fang ta d\u00f9ng hi\u1ec7n nay, d\u1ef1a theo ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n t\u1ea3i th\u00f4ng tin tr\u00ean \u0111\u01b0\u1eddng \u0111i\u1ec7n c\u00f3 th\u1ec3 chia ra hai lo\u1ea1i l\u00e0 \u0111i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1 (t\u01b0\u01a1ng t\u1ef1) v\u00e0 \u0111i\u1ec7n tho\u1ea1i s\u1ed1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi d\u00f9ng \u0111i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1, \u1ed1ng n\u00f3i tr\u00ean m\u00e1y tho\u1ea1t \u0111\u1ea7u bi\u1ebfn t\u00edn hi\u1ec7u \u00e2m thanh th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n r\u1ed3i chuy\u1ec3n ti\u1ebfp b\u1edfi \u0111\u01b0\u1eddng \u0111i\u1ec7n v\u00e0 m\u00e1y trao \u0111\u1ed5i (b\u1ea3ng chuy\u1ec3n m\u1ea1ch) c\u1ee7a t\u1ed5ng \u0111\u00e0i \u0111i\u1ec7n tho\u1ea1i. Sau khi truy\u1ec1n \u0111\u1ebfn \u0111\u1ed1i ph\u01b0\u01a1ng th\u00ec l\u1ea1i \u0111\u01b0\u1ee3c ho\u00e0n nguy\u00ean th\u00e0nh t\u00edn hi\u1ec7u \u00e2m thanh trong \u1ed1ng nghe c\u1ee7a m\u00e1y \u0111\u1ed1i ph\u01b0\u01a1ng v\u00e0 ph\u00e1t ra. T\u1eeb \u0111\u00f3 m\u00e0 t\u1ea1o n\u00ean th\u00f4ng tin \u0111i\u1ec7n tho\u1ea1i hai chi\u1ec1u. T\u00edn hi\u1ec7u \u0111i\u1ec7n truy\u1ec1n t\u1ea3i trong \u0111\u01b0\u1eddng d\u00e2y c\u00f3 hai \u0111\u1eb7c tr\u01b0ng ch\u1ee7 y\u1ebfu l\u00e0 m\u1ee9c \u0111\u1ed9 v\u00e0 t\u1ea7n s\u1ed1. \u00c2m l\u01b0\u1ee3ng c\u1ee7a ng\u01b0\u1eddi n\u00f3i c\u00f3 th\u1ec3 l\u00e0m cho m\u1ee9c \u0111\u1ed9 t\u00edn hi\u1ec7u \u0111i\u1ec7n c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed5i, c\u00f2n \u00e2m \u0111i\u1ec7u c\u1ee7a ng\u01b0\u1eddi n\u00f3i th\u00ec l\u1ea1i l\u00e0m cho t\u1ea7n s\u1ed1 t\u00edn hi\u1ec7u \u0111i\u1ec7n c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed5i. Do v\u1eady, \u0111i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1 truy\u1ec1n t\u1ea3i tr\u00ean \u0111\u01b0\u1eddng \u0111i\u1ec7n l\u00e0 lo\u1ea1i t\u00edn hi\u1ec7u \u0111i\u1ec7n \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i t\u1eeb t\u00edn hi\u1ec7u ti\u1ebfng n\u00f3i t\u01b0\u01a1ng t\u1ef1. T\u00edn hi\u1ec7u \u0111i\u1ec7n nh\u01b0 &#8220;c\u00e1i b\u00f3ng&#8221; c\u1ee7a t\u00edn hi\u1ec7u \u00e2m thanh. B\u1ecdn nghe tr\u1ed9m ch\u1ec9 c\u1ea7n t\u00ecm c\u00e1ch c\u00f3 \u0111\u01b0\u1ee3c lo\u1ea1i t\u00edn hi\u1ec7u \u0111i\u1ec7n n\u00e0y l\u00e0 c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng l\u00e0m cho t\u00edn hi\u1ec7u \u0111i\u1ec7n bi\u1ebfn th\u00e0nh t\u00edn hi\u1ec7u \u00e2m thanh trong \u1ed1ng nghe ho\u1eb7c trong thi\u1ebft b\u1ecb chuy\u1ec3n t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh t\u00edn hi\u1ec7u \u00e2m thanh r\u1ed3i ph\u00e1t ra. Nh\u01b0 v\u1eady l\u00e0 n\u1ed9i dung th\u00f4ng tin \u0111\u00e3 b\u1ecb l\u1ed9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu khi \u0111i\u1ec7n tho\u1ea1i th\u00f4ng \u0111\u01b0\u1eddng truy\u1ec1n m\u00e0 s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb b\u1ea3o m\u1eadt th\u00ec c\u00f3 th\u1ec3 b\u1ea3o m\u1eadt nh\u1eefng th\u00f4ng tin truy\u1ec1n \u0111i. Thi\u1ebft b\u1ecb b\u1ea3o m\u1eadt th\u00ec c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i \u0111\u1eb7c tr\u01b0ng c\u1ee7a t\u00edn hi\u1ec7u \u0111i\u1ec7n m\u00f4 ph\u1ecfng, d\u1ef1a v\u00e0o m\u1eadt \u01b0\u1edbc \u0111\u00e3 quy \u0111\u1ecbnh tr\u01b0\u1edbc v\u1edbi \u0111\u1ed1i ph\u01b0\u01a1ng, c\u1ea3i bi\u1ebfn t\u1ea7n s\u1ed1 cao v\u1ed1n c\u00f3 c\u1ee7a t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh t\u1ea7n s\u1ed1 th\u1ea5p, r\u1ed3i bi\u1ebfn \u0111\u1ed5i t\u1ea7n s\u1ed1 th\u1ea5p ban \u0111\u1ea7u th\u00e0nh t\u1ea7n s\u1ed1 cao, th\u1eadm ch\u00ed c\u00f3 th\u1ec3 ph\u00e2n chia c\u1ea3 \u0111o\u1ea1n t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh nhi\u1ec1u \u0111o\u1ea1n nh\u1ecf r\u1ed3i l\u1ea7n l\u01b0\u1ee3t \u0111\u1ea3o l\u1ed9n \u0111i, l\u00e0m cho \u0111\u1eb7c tr\u01b0ng t\u00edn hi\u1ec7u \u0111i\u1ec7n b\u1ecb &#8220;h\u1ed7n lo\u1ea1n&#8221;. Lo\u1ea1i t\u00edn hi\u1ec7u \u0111i\u1ec7n ho\u00e0n to\u00e0n b\u1ecb bi\u1ebfn d\u1ea1ng n\u00e0y khi truy\u1ec1n t\u1ea3i tr\u00ean \u0111\u01b0\u1eddng d\u00e2y d\u00f9 c\u00f3 b\u1ecb nghe tr\u1ed9m ho\u1eb7c b\u1ecb l\u1ea5y \u0111i th\u00ec trong \u1ed1ng nghe ho\u1eb7c trong thi\u1ebft b\u1ecb \u0111\u1ed5i th\u00e0nh ti\u1ebfng ph\u00e1t ra c\u0169ng ch\u1ec9 l\u00e0 m\u1ed9t lo\u1ea1i \u00e2m thanh kh\u00e1c l\u1ea1 b\u1ecb bi\u1ebfn d\u1ea1ng nghi\u00eam tr\u1ecdng. Nh\u01b0 v\u1eady l\u00e0 \u0111\u00e3 c\u00f3 t\u00e1c d\u1ee5ng b\u1ea3o m\u1eadt r\u1ed3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u01a1ng nhi\u00ean, v\u1edbi s\u1ef1 ti\u1ebfp nh\u1eadn b\u00ecnh th\u01b0\u1eddng th\u00ec thi\u1ebft b\u1ecb b\u1ea3o m\u1eadt s\u1ebd d\u1ef1a theo m\u1eadt \u01b0\u1edbc \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh ban \u0111\u1ea7u l\u1ea1i \u0111\u1ea3o l\u1ed9n tr\u1edf l\u1ea1i c\u00e1c \u0111\u1eb7c tr\u01b0ng c\u1ee7a t\u00edn hi\u1ec7u n\u00e0y ho\u00e0n nguy\u00ean th\u00e0nh d\u1ea1ng c\u0169 v\u00e0 c\u00f3 th\u1ec3 ph\u00e1t ra th\u00e0nh t\u00edn hi\u1ec7u \u00e2m thanh r\u00f5 r\u00e0ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f2n v\u1ec1 \u0111i\u1ec7n tho\u1ea1i s\u1ed1, tr\u00ean \u0111\u01b0\u1eddng \u0111i\u1ec7n n\u00f3 truy\u1ec1n t\u1ea3i t\u00edn hi\u1ec7u \u0111i\u1ec7n l\u00e0 t\u1ed5 h\u1ee3p c\u1ee7a hai con s\u1ed1 0 v\u00e0 1. Lo\u1ea1i t\u00edn hi\u1ec7u \u0111i\u1ec7n n\u00e0y trong k\u1ef9 thu\u1eadt g\u1ecdi l\u00e0 t\u00edn m\u00e3, b\u1ea3n th\u00e2n n\u00f3 \u0111\u00e3 c\u00f3 t\u00ednh b\u1ea3o m\u1eadt cao r\u1ed3i. \u0110\u1ec3 b\u1ea3o m\u1eadt th\u00eam n\u1eefa, s\u1ebd l\u00e0m r\u1ed1i lo\u1ea1n t\u1ed5 h\u1ee3p t\u00edn m\u00e3, c\u00e0ng r\u1ed1i c\u00e0ng t\u1ed1t. Khi ti\u1ebfp nh\u1eadn, s\u1ebd c\u0103n c\u1ee9 v\u00e0o m\u1eadt \u01b0\u1edbc \u0111\u00e3 quy \u0111\u1ecbnh tr\u01b0\u1edbc m\u00e0 ho\u00e0n nguy\u00ean nh\u1eefng t\u00edn m\u00e3 t\u1eebng b\u1ecb \u0111\u1ea3o l\u1ed9n kia. Nh\u01b0 v\u1eady l\u00e0 c\u00f3 th\u1ec3 truy\u1ec1n th\u00f4ng tin b\u00ecnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c r\u1ed3i. V\u00ec \u0111i\u1ec7n tho\u1ea1i s\u1ed1 tr\u00ean \u0111\u01b0\u1eddng d\u00e2y truy\u1ec1n t\u1ea3i m\u1ed9t lo\u1ea1i t\u00edn m\u00e3 \u0111\u00e3 b\u1ecb l\u00e0m r\u1ed1i lo\u1ea1n, d\u00f9 cho c\u00f3 b\u1ecb nghe tr\u1ed9m th\u00ec c\u0169ng kh\u00f4ng th\u1ec3 d\u1ecbch ra ngay \u0111\u01b0\u1ee3c. V\u00e0 nh\u01b0 v\u1eady, n\u00f3 c\u00f3 hi\u1ec7u qu\u1ea3 b\u1ea3o m\u1eadt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f9ng v\u1edbi s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a k\u1ef9 thu\u1eadt \u0111i\u1ec7n t\u1eed, k\u1ef9 thu\u1eadt b\u1ea3o m\u1eadt s\u1ebd c\u00e0ng ti\u00ean ti\u1ebfn h\u01a1n. T\u00ednh b\u1ea3o m\u1eadt c\u1ee7a \u0111i\u1ec7n tho\u1ea1i ng\u00e0y c\u00e0ng t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kh\u00f3a: \u0110i\u1ec7n tho\u1ea1i t\u01b0\u01a1ng t\u1ef1; \u0110i\u1ec7n tho\u1ea1i s\u1ed1; B\u1ea3o m\u1eadt.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y, \u0111i\u1ec7n tho\u1ea1i l\u00e0 ph\u01b0\u01a1ng ti\u1ec7n kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 m\u1ecdi ng\u01b0\u1eddi li\u00ean h\u1ec7 v\u1edbi nhau. N\u1ed9i dung kh\u00f4ng quan tr\u1ecdng trong \u0111i\u1ec7n tho\u1ea1i, d\u00f9 b\u1ecb ng\u01b0\u1eddi kh\u00e1c nghe tr\u1ed9m c\u0169ng kh\u00f4ng sao. N\u1ebfu nh\u01b0 l\u00e0 tin c\u01a1 m\u1eadt b\u1ecb nghe tr\u1ed9m th\u00ec h\u1eadu qu\u1ea3 kh\u00f4ng th\u1ec3 l\u01b0\u1eddng \u0111\u01b0\u1ee3c. L\u00fac n\u00e0y, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,13],"tags":[],"class_list":["post-10370","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tin-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10370","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=10370"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10370\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=10370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=10370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=10370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}