What type of attack might involve monitoring network transmissions to forge an acceptable response?

A man-in-the-middle attack involves an adversary secretly intercepting and relaying messages between two parties who believe they are directly communicating with each other. During this type of attack, the attacker can monitor network transmissions and potentially manipulate or forge responses. This capability allows them to impersonate one of the communicating parties, thereby facilitating unauthorized access to sensitive information or systems.

In contrast, a denial-of-service (DoS) attack aims to make a service unavailable to its intended users by overwhelming it with traffic or requests, focusing on disruption rather than interception. A distributed denial-of-service (DDoS) attack extends this concept by utilizing multiple compromised systems to launch a more scalable attack. Phishing, on the other hand, typically involves tricking an individual into providing sensitive information by masquerading as a trustworthy entity in digital communications. While these other attacks can certainly harm security, they do not involve the active monitoring and manipulating of data transmissions in the same way that a man-in-the-middle attack does.