Well, I would say a web browser, like Mozilla Firefox, Safari for IOS, Windows Edge, Chrome, or Internet Explorer; and some anti-malware software, since there are multiple websites on the WWW that try to steal your information and give your device viruses.
Answer:

Explanation:
Given

Required
The result when
and
Analyzing the given instruction
a*=(++a)/(6)+(b++3)
Single out and solve the expressions in bracket
(++a) = a -- When the ++ operator appears before an operand, it is called pre increment. meaning that the operation will be done before the operand will be incremented.
So: in this case: ++a = a

The operator, as used in that statement is the same as: b + 3.
So:





The above expression is calculated as:

So:


When a user is created in Linux using the useradd command, the <em>immediate state</em> of the created account is locked.
- The useradd command can be invoked in other to create a new user account using the following command
sudo useradd fast_user
<em>#fast_user</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>name</em><em> </em><em>of</em><em> </em><em>the</em><em> </em><em>account</em><em> </em><em>created</em><em> </em>
- At this point, the account has been created but it will be locked until the required login details are set. This can be achieved using the line ;
sudo passwd fast_user
Therefore, an account created using the useradd command is in a locked state.
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I would say the best clear answer is D, because A is a little bit unclear but I would say the best answer is D.
Why?
Mesh Topology is expensive considering more links as compared to Ring topology.