Answer:
4. A Denial of Service attack (DDOS attack).
Explanation:
A DDOS attack is a malicious attempt to disrupt the normal traffic to a service.
In essence, it sends an enormous amount of requests to the service, until the server is overwhelmed because it can't handle that much traffic, and collapses in an overflow.
Thus, regular users are not able to access their services.
Usually, attackers use a botnet, a network of "zombie" computers that have been previously infected with a malware that allows the attacker to remotely control them, then the botnet starts to send a flood of traffic from different locations, and make the attacker difficult to detect or track.
It helps to keep things organized
The answer is a Mesh topology. This method connects every device to each other device in the network. A wired full-mesh topology is not as common as it is impractical and highly expensive. A partial mesh topology offers redundancy if one of the connections goes down and usually uses a connecting medium such as a router to eliminate cables and expensive PCI NIC's.
Answer: Zombies
Explanation: Zombie is a computer device that is responsible for the compromising the system and making it prone to several destruction such as the Trojan horse virus,hackers and other viruses as well. Zombie makes the computer system to get malfunctioned easily ,that is without much security and various malicious functions can be performed.They basically act as the infected computer .
Answer:
I would have to say C.
Explanation:
Feel free to correct me if i'm wrong :)
Hope this helps