A(n) attack is when a system is compromised and used to attack other systems. a. indirect b. direct c. object d. subject

a. indirect

Explanation:            

When a system is attacked by a hacker and this infected system is used to attack other systems then it is called indirect attack.  This type of attack is often initiated by a 3rd party computer. It is difficult to find from where this kind of attacks is originated.

Direct attack is when a system is attacked directly by an attacker by installing malicious software or often by getting unauthorized physical access to a computer. So option b is not true.

So the correct option is a. indirect.

a local network will allow everyone in the office to share the printer.

answer; availability;