D337 Internet of Things (IoT) and Infrastructure - Set 4 - Part 3

Correct Answer: They are numerous and often poorly secured, making them easy to compromise

IoT devices exist in huge numbers with weak default security and infrequent patching, so attackers can compromise many of them and combine their bandwidth into powerful botnets.

Correct Answer: Visibility into performance, availability, and anomalous behavior

Network monitoring collects metrics and alerts on device status, traffic patterns, and performance, allowing teams to detect faults and anomalies before they cause outages.

Correct Answer: Collecting management and status information from network devices

The Simple Network Management Protocol collects status, configuration, and performance data from network devices, supporting centralized monitoring and management.

Correct Answer: Identifying coverage gaps and interference to plan access point placement

A site survey measures signal strength, coverage, and interference in the physical environment so access points are positioned to deliver reliable connectivity where devices operate.

Correct Answer: Machinery, metal structures, and overlapping radio channels

Metal structures reflect and block signals, motors and machinery emit electromagnetic noise, and overlapping channels from nearby networks all degrade wireless performance.

Correct Answer: Intentionally limiting data transfer rates for certain traffic

Throttling deliberately limits the data rate available to particular traffic or users, used to manage congestion and ensure capacity for higher-priority applications.

Correct Answer: Prioritizing critical traffic to guarantee performance for key applications

QoS classifies and prioritizes traffic so latency-sensitive or business-critical data receives preferential treatment during congestion, ensuring consistent performance.

Correct Answer: A system that monitors traffic and alerts on suspicious activity

An IDS monitors network or host activity for signs of malicious behavior or policy violations and generates alerts. An intrusion prevention system additionally blocks detected threats.

Correct Answer: You cannot secure or patch devices you do not know exist on the network

A complete, current inventory of connected devices is foundational to security, because unknown or forgotten devices remain unpatched and unmonitored, creating hidden attack paths.

Correct Answer: Using multiple layered controls so no single failure causes a breach

Defense in depth layers independent controls such as segmentation, authentication, encryption, monitoring, and patching, so the failure of any one control does not result in compromise.