The question is incomplete. The complete question is :
Each statement below involves odd and even integers. An odd integer is an integer that can be expressed as 2k+1, where k is an integer. An even integer is an integer that can be expressed as 2k, where k is an integer. Prove each of the following statements using a direct proof. (a) The sum of an odd and an even integer is odd. (b) The product of two odd integers is an odd integer.
Solution :
Odd number integers = 2k + 1, where k is integer
Even number integer = 2k
a). Odd integer + even integer
= 2k + 1 + 2k
= 4k + 1
= 2(2k) + 1
Let 2k = t, where t is integer
= 2t + 1
= Odd integer by definition
If number is 2t + 1 where t belongs to integer, then it is odd integer.
Hence proved.
b). Product of two odd integers : 
where 
belongs to integer.
Let 
and 
here, a and b belongs to integers since 
and 
are integers.
We get:
2a+2b+1
= 2(a+b)+1
= 2l + 1, Let (a+b)=l and l belongs to integers.
It is odd integer by definition.
Hence proved.
Answer:
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Explanation:
Answer:
Explanation:
1. Observing users as they enter passwords or other personal information to a computer Auditing software often used to test computer data - (shoulder surfing)
2. An acronym for security institute that studies computer crime activities The act of altering data that are entered into, or used by, a computer --- (CSI)
3. A small text file that stores information about your browsing habits and interests Stealing personal information from trash cans - (COOKIES)
4. A software program specifically designed for computer forensic investigations - (EnCase)
5. A type of fraud in which the perpetrator steals small amounts from many different accounts - (salami technique)
6. A software program or hardware device designed to prevent unauthorized data communications - (firewall)
7. Malicious software similar to a computer virus -- (_worm)
8. Federal legislation aimed specifically at computer crime (CFAA)
Answer:
Encoding is the process in which the digital or analog data are converted into digital signal. Encoding are used for efficient transmission and storage purpose by putting in the form of sequence of various number and characters.
There are basically three types of encoding:
- Semantic encoding
- Visual encoding
- Acoustic encoding
Modulating is the process of encoding the information in a transmitted signal and converting the digital or analog data into analog signals. It is widely used in long distance communication. In modulating process, modulator is the device that are capable of modulating carrier signal.
