A weighted score or weighted grade is merely the average of a set of grades, where each set carries a different amount of importance.Suppose at the beginning of the year, the teacher hands you the syllabus. On it, he or she explains that your final grade will be determined in this manner:nswer: A weighted score or weighted grade is merely the average of a set of grades, where each set carries a different amount of importance. Suppose at the beginning of the year, the teacher hands you the syllabus. On it, he or she explains that your final grade will be determined in this manner:
A distributed denial-of-service (DDoS) attack is one in which a multitude of compromised systems attack a single target, thereby causing denial of service for users of the targeted system.
Sometimes the traffic is enough to shut the site down completely. We call this kind of an attack a Distributed Denial of Service (DDoS) attack. Some particularly tricky botnets use uncorrupted computers as part of the attack. Here's how it works: the cracker sends the command to initiate the attack to his zombie army.