{"id":35499,"date":"2018-02-20T23:50:30","date_gmt":"2018-02-20T23:50:30","guid":{"rendered":"https:\/\/writemyessayfree.com\/dos-and-ddos-attack"},"modified":"2017-08-16T06:33:08","modified_gmt":"2017-08-16T06:33:08","slug":"dos-and-ddos-attack","status":"publish","type":"post","link":"https:\/\/www.benedictsol.com\/blogs\/dos-and-ddos-attack\/","title":{"rendered":"Dos and ddos attack"},"content":{"rendered":"
\n

QUESTION 1<\/strong><\/p>\n

(a)(i) Differentiate between Denial of Service attack (DoS) and Distributed Denial of service (DDoS) attack.<\/p>\n

(ii) Give one instance of a DoS attacks and one example of a DDoS attack.<\/p>\n

(iii) Talk about two motivations for causing a DDoS attack.<\/p>\n

(b)Evaluate and contrast Phishing and Pharming attacks. Which of these attacks is likely going to be more fruitful for the attacker? Give details why.<\/p>\n

(c)What poses a bigger risk to an organization: External attacks or Insider attacks? give good reason for your statement.<\/p>\n

QUESTION 2<\/strong><\/p>\n

(a)Discriminate between a one-factor and a two-factor authentication system of a user. Which one is more secure?<\/p>\n

(b)It is strongly recommended to implement \u201cpassword ageing\u201d for password systems. Make clear \u201cpassword ageing\u201d. How does it augment security?<\/p>\n

(c)(i) How is dictionary attacks made not easy against Unix systems?<\/p>\n

(ii) Is dictionary attack theoretically impossible when made difficult? validate your answer.<\/p>\n

(iii) Which file is instrumental in preventing dictionary attack altogether?<\/p>\n

(d)Which type of biometric device is considered to be the most secure: fingerprint scan or retina scan?<\/p>\n

(e)Converse the problems of using a smart card for authentication.<\/p>\n

QUESTION 3<\/strong><\/p>\n

(a)What kind of cryptographic attack made Double DES (2DES) not secure?<\/p>\n

(b)What is the major hurdle preventing the widespread adoption of one-time pad cryptosystems to ensure data confidentiality?<\/p>\n

(c)Which Data Encryption Standard (DES) operating modes can be used for large memos without the worry that an error early in the encryption\/decryption process will spoil results throughout the communication? Clarify your answer.<\/p>\n

(d)What is the major benefit of symmetric encryption?<\/p>\n

(e)Confer three drawbacks of symmetric encryption.<\/p>\n

(f)(i) Name the current symmetric encryption standard algorithm.<\/p>\n

(ii) Will this algorithm still be the standard in 40 years?<\/p>\n

(g)Give an instance of a digital certificate format.<\/p>\n

(h)Presuppose a public key cryptosystem is being used.<\/p>\n

(i) Richard wants to send Sue a message such that only Sue can read the message. Which key should he use to encrypt the message digest?<\/p>\n

(ii) Richard would like to digitally sign a message he\u2019s sending to Sue so that Sue can be sure the message came from him. Which key should he use to produce the digital signature?<\/p>\n

QUESTION 4<\/strong><\/p>\n

(a)Which port number is associated with https?<\/p>\n

(b)Briefly portray the four SSL protocols.<\/p>\n

(c)(i) SSL requires the exchange of a pre-master secret. How is the pre-master secret exchanged amid the client and server securely?<\/p>\n

(ii) What is the importance of the pre-master secret shared during handshaking?<\/p>\n

(d)Why should a Demilitarized Zone (DMZ) be used on a network?<\/p>\n

(e)Describe how the application level proxy firewall is more secure than the packet filter firewall.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

QUESTION 1 (a)(i) Differentiate between Denial of Service attack (DoS) and Distributed Denial of service (DDoS) attack. (ii) Give one instance of a DoS attacks and one example of a DDoS attack. (iii) Talk about two motivations for causing a Read More …<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-35499","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/posts\/35499","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/comments?post=35499"}],"version-history":[{"count":0,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/posts\/35499\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/media?parent=35499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/categories?post=35499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.benedictsol.com\/blogs\/wp-json\/wp\/v2\/tags?post=35499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}