{"id":2010,"date":"2022-09-01T21:54:02","date_gmt":"2022-09-01T13:54:02","guid":{"rendered":"https:\/\/choson_steven.lifenet.com.tw\/?p=2010"},"modified":"2023-03-29T15:14:54","modified_gmt":"2023-03-29T07:14:54","slug":"cissp-practice-questions-20220321","status":"publish","type":"post","link":"https:\/\/choson.lifenet.com.tw\/?p=2010","title":{"rendered":"CISSP PRACTICE QUESTIONS \u2013 20220321"},"content":{"rendered":"\n<p><strong>According to Bruce&nbsp;<strong>Schneier<\/strong>, there are four general types of cryptanalytic attacks, each of which assumes that the cryptanalyst has complete knowledge of the encryption algorithm. Which of the following emphasizes that the cryptanalyst\u2019s job is to recover the plaintext of as many messages as possible, or better yet to deduce the key (or keys) used to encrypt the messages, in order to decrypt other messages encrypted with the same keys? (Wentz QOTD)<br><\/strong>A. Ciphertext-only attack<br>B. Known-plaintext attack<br>C. Chosen-plaintext attack<br>D. Chosen-ciphertext attack<\/p>\n\n\n\n<p>\u6839\u64da Bruce Schneier \u7684\u8aaa\u6cd5\uff0c\u6709\u56db\u7a2e\u4e00\u822c\u985e\u578b\u7684\u5bc6\u78bc\u5206\u6790\u653b\u64ca\uff0c\u6bcf\u4e00\u7a2e\u90fd\u5047\u8a2d\u7834\u5bc6\u5206\u6790\u8005\u5b8c\u5168\u4e86\u89e3\u52a0\u5bc6\u7b97\u6cd5\u3002 \u4ee5\u4e0b\u54ea\u9805\u5f37\u8abf\u7834\u78bc\u5206\u6790\u54e1\u7684\u5de5\u4f5c\u662f\u76e1\u53ef\u80fd\u591a\u5730\u6062\u5fa9\u6d88\u606f\u7684\u660e\u6587\uff0c\u6216\u8005\u66f4\u597d\u5730\u63a8\u65b7\u7528\u65bc\u52a0\u5bc6\u6d88\u606f\u7684\u5bc6\u9470\uff08\u6216\u591a\u500b\u5bc6\u9470\uff09\uff0c\u4ee5\u4fbf\u89e3\u5bc6\u4f7f\u7528\u76f8\u540c\u5bc6\u9470\u52a0\u5bc6\u7684\u5176\u4ed6\u6d88\u606f? (Wentz QOTD)<br>A. \u53ea\u6709\u5bc6\u6587\u653b\u64ca<br>B. \u5df2\u77e5\u660e\u6587\u653b\u64ca<br>C. \u9078\u64c7\u660e\u6587\u653b\u64ca<br>D. \u9078\u64c7\u5bc6\u6587\u653b\u64ca<\/p>\n\n\n\n<p>\u5efa\u8b70\u7b54\u6848\u70baA<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1013\" height=\"239\" src=\"https:\/\/choson.lifenet.com.tw\/wp-content\/uploads\/2022\/09\/1662039106700.jpg\" alt=\"\" class=\"wp-image-2011\" srcset=\"https:\/\/choson.lifenet.com.tw\/wp-content\/uploads\/2022\/09\/1662039106700.jpg 1013w, https:\/\/choson.lifenet.com.tw\/wp-content\/uploads\/2022\/09\/1662039106700-300x71.jpg 300w, https:\/\/choson.lifenet.com.tw\/wp-content\/uploads\/2022\/09\/1662039106700-768x181.jpg 768w\" sizes=\"auto, (max-width: 1013px) 100vw, 1013px\" \/><\/figure>\n\n\n\n<p>\u6839\u64da\u5bc6\u78bc\u5b78\u5927\u5b78Bruce Schneier\u7684\u8aaa\u6cd5, \u53ea\u6709\u5bc6\u6587\u653b\u64ca, \u5df2\u77e5\u660e\u6587\u653b\u64ca, \u9078\u64c7\u660e\u6587\u653b\u64ca, \u53ca\u9078\u64c7\u5bc6\u6587\u653b\u64ca\u7b49\u90fd\u53ef\u4ee5\u7528\u4f86\u7834\u89e3Key(\u5373deduce the key), \u4f46\u6709\u4e8c\u500b\u662f\u6bd4\u8f03\u7279\u5225\u7684:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u53ea\u6709\u5bc6\u6587\u653b\u64ca: \u96d6\u7136\u53ef\u7528\u4f86\u7834\u89e3key, \u4f46\u5b83\u4e3b\u8981\u662f\u9084\u539f\u660e\u6587\u70ba\u4e3b.<\/li>\n\n\n\n<li>\u9078\u64c7\u5bc6\u6587\u653b\u64ca: \u7834\u89e3key, \u4f46\u4e3b\u8981\u662f\u91dd\u5c0d\u975e\u5c0d\u7a31\u5f0f\u52a0\u5bc6<\/li>\n<\/ol>\n\n\n\n<p>\u8cc7\u6599\u4f86\u6e90\uff1ahttps:\/\/wentzwu.com\/2022\/03\/21\/cissp-practice-questions-20220321\/<\/p>\n\n\n\n<p>PS:\u6b64\u6587\u7ae0\u7d93\u904e\u4f5c\u8005\u540c\u610f\u520a\u767b \u4e26\u4e14\u6388\u6b0a\u53ef\u4ee5\u7ffb\u8b6f\u6210\u4e2d\u6587<\/p>\n","protected":false},"excerpt":{"rendered":"<p>According to Bruce&nbsp;Schneier, there are four genera [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2010","post","type-post","status-publish","format-standard","hentry","category-cissp-wentzwu"],"_links":{"self":[{"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/2010","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2010"}],"version-history":[{"count":2,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/2010\/revisions"}],"predecessor-version":[{"id":2785,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/2010\/revisions\/2785"}],"wp:attachment":[{"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}