When you use the bufferedreader class, you must import the java.io package into your program. It is<span> an API that comes with </span>Java<span> which is aimed at reading and writing data (input and output). ... For instance, read data from a file and write to a file or write a response back over the network. The </span>Java IO<span> API is located in the </span>Java IO<span> package ( </span>java.io<span> ).</span>
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.
