Answer:
Dropper.
Explanation:
A rootkit can be defined as a collection of hidden malicious computer software applications that gives a hacker, attacker or threat actor unauthorized access to parts of a computer and installed software. Some examples of rootkits are trojan, virus, worm etc.
The dropper code of a rootkit gets the rootkit installation started and can be activated by clicking on a link to a malicious website in an email or opening an infected PDF file such as phishing.
Hence, the dropper code of a rootkit launches and installs the loader program and eventually deletes itself, so it becomes hidden and not be noticed by the owner of the computer.
A rootkit can affect the performance of a computer negatively causing it to run slowly.
Answer:
Inline view.
Explanation:
Inline view:-It is not a real view instead it is a sub-query or a SELECT statement in the FROM clause of the of another select statement.In the query provided we have a sub - query which is displaying category and Average of retail from the books table and this query is present in the FROM clause of other SELECT statement.
It would be C. Personal selling. Hope it helps!