Answer:
A. C to clear any previous calculations.
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A reputable website would be one that you could research online and read about it's history , reviews etc .
Answer:
Root
Explanation:
Linux is an open source operating system which receives command from the user and communicates with the hardware, and in Linux the root directory is the top level directory that contains all other directory, it is not recommended to create files and folders in the root directory because the commands the user enters may change files that the operation system may depend on for usage.
Answer:
Implicit deny
Explanation:
A firewall is a network security protocol that monitors and controls inbound and outbound traffic based on set aside security rules.
When a firewall encounters a traffic it does not have a rule that explicitly defines an action for that communication, it implicit deny.