[20 points] Using the algorithm of calculating multiplicative inverse to find answers to the following two cases. (Your answer must show steps of calculations. A correct answer without calculation steps only earn 1 point.) (i) [10 points] 135 mod 61 (ii) [10 points] 7465 mod 2464

Two integers are __________ if their only common positive integer factor is 1.

[10 points] What are the two general approaches to attacking a cipher?

Information security and network security are subsets of cybersecurity.

Alice often needs to encipher plaintext made of letters (a to z), digits (0 to 9), spaces, commas, periods, and question marks. [10 points] How many keys can be used if a multiplicative cipher is used? (A multiplicative cipher is defined as c = k1*p (mod n) where n is the number of symbols, k1 is the single key.) [5 points] How many key pairs can be used if an affine cipher is used? (An affine cipher is defined as c = (k1*p + k2) (mod n) where n is the number of symbols, k1 and k2 are the two keys.)

_____________ is the collection of tools, policies, security concepts, security safeguards, guidelines, risk management approaches, actions, training, best practices, assurance, and technologies that can be used to protect the cyberspace environment and organization and users’ assets.

What is a budget? How is it used by a business firm?

How might the information needs of a marketing manager differ from those of an operations manager?

State the purpose of a promissory note. Why would a supplier use a promissory note for short-term financing instead of trade credit?

Students with intellectual disabilities are mostly likely to be identified during which period of schooling?