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Corroborative evidence is the type of evidence that supports a theory or an assumption that results from initial evidence. It provides additional support to the initial findings, strengthening the theory or assumption by confirming the same facts or pointing towards the same conclusion with independent pieces of evidence4567.

References := Types of evidence (article) | Lessons | Khan Academy, Evidence: Fundamental Concepts and the Phenomenal Conception, Navigating Scientific Evidence: Types and Definitions, How Courts Work - American Bar Association

The attack described is a DNS amplification attack. It involves infected endpoints sending DNS requests with spoofed IP addresses to external DNS servers. The DNS servers then send large responses to the spoofed addresses, which are actually the targets of the attack. This can result in a significant amount of traffic being directed at the target, overwhelming their network resources. DNS amplification is a type of Distributed Denial of Service (DDoS) attack that leverages the DNS protocol to amplify the attack traffic.

The exhibit shows a log that contains information such as the date, flow start, duration, protocol used, source and destination IP addresses and ports, packets, bytes, and flows. This type of detailed metadata is typically associated with NetFlow logs which are used for collecting IP traffic information and monitoring network traffic. References := Cisco CyberOps Associate

Encryption allows the user to make the data incomprehensible without a specific key, certificate, or password. Encryption is a method of transforming data into a format that only authorized parties can access. Encryption can be used to protect data in transit or at rest from unauthorized access or modification. References: (Module 4, Lesson 4.1.1)