Cisco 300-220 Exam With Confidence Using Practice Dumps

The correct answers areA. Service and version of the web serverandC. Technology used by the application. The error message shown in the exhibit is a classic example ofverbose error handling, which unintentionally discloses sensitive internal details about the web application stack.

First, the error page explicitly referencesApache Tomcat/6.0.16at the bottom. This directly exposes theweb server/service and its exact version, makingOption Acorrect. From an attacker’s perspective, this is valuable intelligence because it allows them to search forknown vulnerabilities, exploits, or misconfigurationsspecific to that version of Tomcat. Older versions of Tomcat, in particular, have a long history of publicly documented security flaws.

Second, the stack trace references components such as:

org.apache.jasper.compiler.*

.jsp files (e.g., /user/left.jsp)

javax.servlet.http.HttpServlet

These details clearly reveal thetechnology stack used by the application, namelyJava Server Pages (JSP)running onApache Tomcat with Apache Jasper. This confirmsOption Cas correct. Exposing application technology helps attackers tailor attacks such as deserialization exploits, JSP injection attempts, or framework-specific vulnerabilities.

Option B is incorrect because the error message doesnotstate or imply that Apache Jasper is vulnerable to path injection; it merely shows a compilation/runtime error. Option D is incorrect because the error page provides no information about theclient-side browser version—all disclosed details relate to server-side processing.

From a professional security and threat hunting perspective, verbose error messages significantlyincrease attack surface visibility. Best practices dictate that production systems should returngeneric error messagesto users while logging detailed stack traces internally. This scenario reinforces why proper error handling and information disclosure controls are critical defensive measures.

In summary, the penetration test error message exposes:

Theweb server service and version

Theapplication technology stack

Therefore, the correct answers areA and C.

The correct answer isanalyzing abnormal behavior patterns across identity, endpoint, and network telemetry. This approach represents the foundation of modern threat hunting and directly addresses adversaries who deliberately avoid traditional detections.

Advanced attackers increasingly rely onliving-off-the-land techniques, stolen credentials, and legitimate administrative tools such as PowerShell, WMI, RDP, and cloud APIs. These activities rarely generate malware signatures or known IOCs, making alert-driven and signature-based defenses insufficient. As a result, mature threat hunting programs shift focus towardbehavioral analysis and anomaly detection.

Option A and D rely on static indicators such as IPs, domains, and hashes. These sit at thelowest levels of the Pyramid of Painand are trivial for attackers to change. Option B is purely reactive and limited to known malware, offering little value against stealthy intrusions.

By correlating identity logs (authentication patterns, geolocation anomalies), endpoint telemetry (process execution, parent-child relationships), and network activity (unusual connections, lateral movement patterns), hunters can detectIndicators of Attack (IOAs)rather than waiting for confirmed compromise. This enables identification of credential misuse, privilege abuse, and lateral movement even when no malware is present.

This methodology aligns withMITRE ATT&CK TTP-based hunting, which focuses on tactics and techniques instead of tools or infrastructure. It also reflects a higher tier in theThreat Hunting Maturity Model, where organizations proactively search for unknown threats rather than responding to alerts.

In professional SOC environments, this shift dramatically increases detection coverage against advanced adversaries and reduces dwell time. Therefore, optionCis the most accurate and strategically sound answer.

The correct answer isreduction in attacker dwell time. Dwell time measures how long an attacker remains undetected in the environment.

As threat hunting maturity increases:

Detection becomes faster

Behavioral coverage improves

Attackers are identified earlier in the kill chain

Metrics such as alert volume or blocked IPs (Options A and D) do not reflect effectiveness and may even indicate excessive noise. Option B measures inputs, not outcomes.

Cisco’sCBRTHD blueprintfocuses onoutcomes, not activity. Reduced dwell time demonstrates:

Effective hunting

Better visibility

Stronger detection engineering

This metric directly correlates with reduced breach impact and improved resilience.

Therefore,Option Cis the correct and Cisco-aligned answer.