Listed below is an example for encrypting text using a cipher. assumptions the letters in the alphabet correspond to their counterparts in arithmetic notation mod 26. so the letters of the alphabet a-z are represented by the numbers 0-25 respectively. s a m p l e is initially coded as 18 0 12 15 11 4 next a random stream of numbers is combined with the letter codes: 76 48 03 83 44 16 encoding the message: 18 00 12 15 11 04 76 48 03 83 44 16 add 94 48 15 98 55 20 sum 16 22 15 20 03 20 mod 26 now convert into cipher text: q w p u d u given the set of random numbers below, convert the word s e c r e c y into cipher text: random number stream 18 10 88 65 40 22 25

Raveena is making a professional presentation for a newly launched product of her company. she wants to incorporate the following features in her presentation. a) to add serial numbers in each slide b) to add name of her company on top of each slide. c) to add the picture of her product on the second slide(the picture of her product is stored on her computer) write the commands/features of her presentation tool using which she can perform the above operations.

What do the principles of notice, choice, onward transfer, and access closely apply to? a. privacyb. identificationc. retentiond. classification

Data is processed, stored, and transmitted as a series of 1s and 0s. each 1 or 0 is called a(n) . a series of eight 0s and 1s, called a(n) , represents one character—a letter, number, or punctuation mark. data becomes when it is presented in a format that people can understand and use. digital signals are represented by two different , such as +5 volts and +.2 volts. digital data can also take the form of light and dark spots etched onto the surface of a cd or the positive and negative orientation of particles on the surface of a hard disk. data consists of numbers that might be used in arithmetic operations. it can be represented digitally using the number system. data is composed of letters, symbols, and numerals that are not used in arithmetic operations. computers represent this type of data using , ebcdic, unicode, or utf-8. data is quantified using terms such as or kibibyte (1024 bytes), and prefixes such as or mebi (1,048,576), and giga or (1,073,741,824). to reduce file size and transmission times, digital data can be compressed. compression provides the means to compress data and reconstitute it into its original state. compression throws away some of the original data during the compression process. compressed files usually have at the end of the file name and are represented with special icons. these files have to be or unzipped before you can view the data they contain.