Network Defense Essentials (NDE) 2026 – 400 Free Practice Questions to Pass the Exam

The scenario described is indicative of network intrusions due to the sudden increases in bandwidth consumption and repeated remote login attempts. Network intrusions often manifest through anomalous patterns in traffic, which may involve unauthorized access attempts or excessive use of network resources.

Increased bandwidth consumption is a common sign of attacks like Distributed Denial of Service (DDoS), where malicious actors flood a network or server with excessive traffic to overwhelm resources. Additionally, repeated remote login attempts suggest an attempt to gain unauthorized access to network devices or services, which is a hallmark of intrusion attempts targeting network infrastructure.

Understanding this context is important as it highlights the signs network defenders need to monitor for potential breaches. Host intrusions, although they can manifest similar signs at the machine level, do not directly account for the network-wide indicators specified in the question. Application intrusions focus on vulnerabilities within software applications rather than network traffic patterns, and social engineering attacks involve manipulating individuals rather than exploiting network or machine vulnerabilities directly. Thus, the characteristics presented strongly align with network intrusion attempts.