{"id":761,"date":"2021-01-17T05:39:16","date_gmt":"2021-01-16T18:05:41","guid":{"rendered":"https:\/\/exampracticetests.com\/ISC\/SSCP\/systems-security-certified-practitioner-sscp-question0753\/"},"modified":"2021-01-17T05:44:38","modified_gmt":"2021-01-17T05:44:38","slug":"systems-security-certified-practitioner-sscp-question0753","status":"publish","type":"post","link":"https:\/\/exampracticetests.com\/ISC\/SSCP\/systems-security-certified-practitioner-sscp-question0753\/","title":{"rendered":"Systems Security Certified Practitioner &#8211; SSCP &#8211; Question0753"},"content":{"rendered":"<div class=\"question\">Which of the following is best at defeating frequency analysis? <br \/><strong><br \/>A.<\/strong> Substitution cipher <br \/><strong>B.<\/strong> Polyalphabetic cipher <br \/><strong>C.<\/strong> Transposition cipher <br \/><strong>D.<\/strong> Ceasar Cipher<\/div>\n<p><\/p>\n<style> .hidden-div{ display:none } <\/style>\n<p>\t\t\t\t\t\t\t<button onclick=\"getElementById('hidden-div').style.display = 'block'\"> Show Answer <\/button> <button onclick=\"getElementById('hidden-div').style.display = 'none'\">Hide Answer<\/button><\/p>\n<div class=\"hidden-div\" id=\"hidden-div\"><span style=\"\"><\/p>\n<div class=\"answer\">Correct Answer: <strong>B<\/strong><\/div>\n<p><strong>Explanation:<\/strong> <\/p>\n<div class=\"explanation\">\nSimple substitution and transposition ciphers are vulnerable to attacks that perform frequency analysis. In every language, there are words and patterns that are used more than others.<br \/>\nSome patterns common to a language can actually help attackers figure out the transformation between plaintext and ciphertext, which enables them to figure out the key that was used to perform the transformation. Polyalphabetic ciphers use different alphabets to defeat frequency analysis.<br \/>\nThe ceasar cipher is a very simple substitution cipher that can be easily defeated and it does show repeating letters.<br \/>\nOut of list presented, it is the Polyalphabetic cipher that would provide the best protection against simple frequency analysis attacks. Source: HARRIS, Shon, All-In-One CISSP Certification Exam Guide, McGraw-Hill\/Osborne, 2002, Chapter 8: Cryptography (page 507). And : DUPUIS, Clement, CISSP Open Study Guide on domain 5, cryptography, April 1999.<\/div>\n<p><\/strong><\/span> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following is best at defeating frequency analysis? A. Substitution cipher B. Polyalphabetic cipher C. Transposition cipher D. Ceasar Cipher Show Answer Hide Answer Correct Answer: B Explanation: Simple substitution and transposition ciphers are vulnerable to attacks that perform frequency analysis. In every language, there are words and patterns that are used more [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[1078,756,3],"class_list":["post-761","post","type-post","status-publish","format-standard","hentry","category-systems-security-certified-practitioner-sscp","tag-choices","tag-question-0753","tag-systems-security-certified-practitioner-sscp"],"_links":{"self":[{"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/posts\/761","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/comments?post=761"}],"version-history":[{"count":1,"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/posts\/761\/revisions"}],"predecessor-version":[{"id":1837,"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/posts\/761\/revisions\/1837"}],"wp:attachment":[{"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/media?parent=761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/categories?post=761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exampracticetests.com\/ISC\/SSCP\/wp-json\/wp\/v2\/tags?post=761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}