A denial-of-service (DoS) attack is a type of cyber attack in which a malicious actor attempts to make a computer or other device unavailable to its intended users by interfering with its normal operation. Important PointsStatement I: It is an attempt at preventing users from accessing part of a network, notably internet servers. A denial-of-service (DoS) attack is a type of security threat in which an attacker prevents legitimate users from accessing computer systems, networks, services, or other information technology (IT) resources. DoS attacks simply exploit vulnerabilities in the target system or service, causing it to crash. In these attacks, input is sent that exploits bugs in the target, causing the system to crash or become severely destabilized, preventing it from being accessed or used. Hence statement I is true. Statement II: It can be mitigated by using email filters. DoS attacks typically work by burdening or flooding a targeted machine with requests until normal traffic cannot be processed, resulting in a denial of service to additional users. A DoS attack is identified by the use of a single computer to launch the attack. DoS attacks can be mitigated by using email filters, filter requests, filtering incoming traffics, and also blocking IP addresses from known attackers. Hence, this statement II is correct. Additional InformationThe Distributed Denial of Service (DDoS) attack is another type of DoS attack. When multiple systems orchestrate a synchronized. DoS attack against a single target, this is referred to as a DDoS attack. The main difference is that instead of being attacked from a single location, the target is attacked from multiple locations at the same time. Therefore, both Statements 1 and 2 are true.