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ccna 200-301 jeremy cioara.network monitoring software. Similarly, an access attack that results in a compromised system may also result in slower activity due to an ongoing buffer overflow attack, which can beThis can be indicated by the active process load that is viewable on a Windows or UNIX system.1.3.3 Denial of Service Attacks1.3.3.1 DoS AttacksA DoS attack is a network attack that causes some kind of service interruption to a user, device, or application. There are multiple mechanisms to generate a DoS attack. The simplest method is to generate a large amount of what appears to be legitimate network traffic; this type of network DoS attack saturates the network so that legitimate user traffic cannot pass through.DoS attacks take advantage of the fact that the target system (e.g., a server) must maintain state information. Applications may rely on the expected buffer size and specific content of network packets, and a DoS attack can exploit this characteristic of an application by sending packet sizes or data values that are not expected by the receiving application.DoS attacks occur for two main reasons.Host or application failure to process an unintended condition (e.g., input data in a malicious format or unintended interaction of system components, or it cansimply run out of resources); The network, host, or application cannot handle very large amounts of data, which causes the system to crash or become extremely slow. DoS attacks attempt to disrupt the availability of a network, host, or application. Because of their ease of disrupting business processes and causingserious damage, DoS attacks are considered a major risk. This type of attack is relatively easy to execute and can be carried out even by unskilled attackers.