Cisco Application Visibility and Control (AVC) provides features like metrics collection and exporting (D) for visibility on TCP bandwidth usage, response time, and latency. Application recognition (E) combined with deep packet inspection helps in identifying unknown software by its network traffic flow. References := Cisco CyberOps Associate - Module 2: Security Concepts

Explanation:
Delivery: This step involves transmitting the weapon to the target.
Weaponization: In this step, the intruder creates a malware weapon like a virus, worm or such in order to exploit the vulnerabilities of the target. Depending on the target and thepurpose of the attacker, this malware can exploit new, undetected vulnerabilities (also known as the zero-day exploits) or it can focus on a combination of different vulnerabilities.
Reconnaissance: In this step, the attacker / intruder chooses their target. Then they conduct an in-depth research on this target to identify its vulnerabilities that can be exploited.