Computer hacking<span> refers to the practice of modifying or altering </span>computer<span> software and hardware to accomplish a goal that is considered to be outside of the creator's original objective.
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“bot,” is a computer under the control of a hacker <span>without the knowledge of the computer user.</span>
Answer:
z = a.c' + a.b.d' + b.c'.d'
Explanation:
The truth table for this question is provided in the attachment to this question.
N.B - a' = not a!
The rows with output of 1 come from the following relations: 01 > 00, 10 > 00, 10 > 01, 11 > 00, 11 > 01, 11 > 10
This means that the Boolean expression is a sum of all the rows with output of 1.
z = a'bc'd' + ab'c'd' + ab'c'd + abc'd' + abc'd + abcd'
On simplification,
z = bc'd' + ab'c' + ac'd' + ac'd + abc' + abd'
z = ac' + abd' + bc'd'
Hope this helps!
False because not all social media webstites provide avatars
Answer:
A
Explanation:
Option A is not true because a Boolean variable type can hold one of two values only that is (true/True or false/False).
All the other options given in the question are correct because
- A variable declaration refers to specifying its type and name
- If string variables are assigned a numeric values which is legal provided the values are enclosed in quaotes( " "), trying to carryout a mathematical operation like addition will result in string concatenation.
- The Variable name I_Love_to_eat_pizza is legal because it contains no special characters, doesn't start with a number and its not a reserved word in any language
Answer:
The answer to this question is option b which is data re-engineering.
Explanation:
In computer science, data re-engineering is a part of the software development life cycle(SDLC). In the SDLC the data re-engineering is a technique that provides the facility to increase the size of the data formats, design,data-view, etc. It is also known as the software development process in this process, there are seven-stage for software development. If we want to upgrade the software to use the data re-engineering technique so we used the software development process. We use only this process to develop the software because there is no other process to development. So the correct answer is data re-engineering
