1. What is batch processing? I A]Executing a program so that users can get results and provide input in real time B]Dynamically allocating tasks to different processors so that all processors are used efficiently C] programs one at a time without any interaction from the user D]Providing the use of a computer to multiple users at the same time. 2. Why did early computers not have real-time processing? A]They were too slow B]They didn't need to because many people shared the same computer C]They didn't need to have it because they had human operators. 3. What is a time slice? AJA signal that tells a process it must stop or start B]The procedure of changing from one process to another C]The part of the operating system kernel that manages which process should run at any time D]The amount of time allocated to a process before it must pause and allow another process to take over. 4. What is a Trojan Horse? A]An attack where a server is flooded by more requests than it can handle BJA malicious program that is disguised as something else so you are tricked into installing it C]An attack in which someone is tricked into revealing sensitive information like passwords DJA malicious program that in stalls itself on your computer without you noticing