300-215 Übungsmaterialien - 300-215 Lernressourcen & 300-215 Prüfungsfragen

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Cisco 300-215 Exam Syllabus Topics:

Section	Objectives
Topic 1: Endpoint and Malware Analysis	- Endpoint telemetry analysis - Malware behavior identification - Use of Cisco endpoint security technologies
Topic 2: Incident Response Process	- Preparation and readiness for security incidents - Incident identification and triage - Containment, eradication, and recovery procedures
Topic 3: Network Forensics and Traffic Analysis	- Network flow analysis using Cisco tools - Identifying malicious traffic patterns - Packet capture and analysis
Topic 4: Security Monitoring and Cisco Technologies	- Cisco Secure Endpoint (AMP) usage - Log correlation and SIEM concepts - Cisco Secure Network Analytics (Stealthwatch)
Topic 5: Digital Forensics Fundamentals	- Forensic data acquisition techniques - Evidence handling and chain of custody - Disk and memory forensics concepts

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Cisco Conducting Forensic Analysis & Incident Response Using Cisco Technologies for CyberOps 300-215 Prüfungsfragen mit Lösungen (Q114-Q119):

114. Frage
An engineer is analyzing a ticket for an unexpected server shutdown and discovers that the web-server ran out of useable memory and crashed.
Which data is needed for further investigation?

A. /var/log/messages.log
B. /var/log/httpd/access.log
C. /var/log/access.log
D. /var/log/httpd/messages.log

Antwort: A

115. Frage
Refer to the exhibit.

According to the SNORT alert, what is the attacker performing?

A. brute-force attack against the web application user accounts
B. SQL injection attack against the target webserver
C. XSS attack against the target webserver
D. brute-force attack against directories and files on the target webserver

Antwort: D

Begründung:
The alert clearly identifies ET SCAN DirBuster Web App Scan in Progress, referencingSID 2008186, which is a Snort signature that specifically detectsDirBusteractivity. DirBuster is a well-known tool used for brute- forcing hidden directories and files on web servers.
The Cisco CyberOps Associate guide and OWASP both identifydirectory brute-forcingas a reconnaissance technique to find unprotected or misconfigured endpoints on web applications, typically prior to launching deeper attacks.
Therefore, the correct interpretation of the alert is:
C). brute-force attack against directories and files on the target webserver.

116. Frage
A security team receives a SIEM notification that Cisco Secure Network Analytics detects abnormally high uploads from an internal workstation to external IP addresses over UDP port 53. Investigation confirms that the addresses are known malicious command-and-control servers. Which two actions effectively block these connections and prevent similar incidents? (Choose two.)

A. Add the malicious sources to the blacklist.
B. Configure firewall Security Intelligence to block command-and-control traffic.
C. Block all UDP port 53 connections from the company network to the Internet.
D. Allow DNS traffic only to trusted destinations.
E. Deploy an anti-malware solution on the next-generation firewall.

Antwort: A,B

Begründung:
The confirmed malicious external IP addresses should be added to a blocklist, immediately preventing communication with the identified command-and-control infrastructure. Firewall Security Intelligence should also be configured to block C2 traffic using reputation intelligence and maintained custom lists or feeds.
Cisco describes Security Intelligence as an early filtering layer that blocks known malicious IP addresses, URLs, and domains before deeper inspection is required. Deploying anti-malware on the firewall does not directly address the confirmed destination-based connections. Blocking all outbound UDP/53 traffic is overly broad and may disrupt legitimate DNS resolution. Restricting DNS to trusted resolvers can be a useful architectural control, but the keyed response specifically combines targeted blacklisting with threat- intelligence-based C2 filtering. This aligns with CBRFIR Incident Response Techniques objective 3.5:
recommend mitigation for evaluated alerts from firewalls, SIEM, and Cisco Secure Network Analytics. Cisco Secure Firewall Security Intelligence

117. Frage
An EDR solution reports that a suspicious process dropped a malicious file on endpoint DE23X5940P.
Sandbox analysis shows that the malware propagates through SMB and communicates through an encrypted command-and-control channel. A business-critical solution also depends on SMB. Which action should the security analyst take to respond to the incident and mitigate risk?

A. Isolate the machine and block the command-and-control IP address.
B. Disable SMB communications on all networks.
C. Deploy an SSL-inspection solution and remove the malware.
D. Reimage the machine and reset the user's credentials.

Antwort: A

Begründung:
Isolating the infected endpoint immediately interrupts SMB-based propagation while preserving SMB for the business-critical application elsewhere. Blocking the known command-and-control IP also prevents the malware from receiving instructions or exfiltrating information. This is targeted containment: it reduces active risk without imposing an organization-wide outage. Disabling SMB on every network would be operationally damaging and ignores the stated dependency. SSL inspection may improve visibility into future encrypted traffic, but deploying it is slower and does not immediately stop the compromised host's lateral movement.
Reimaging and credential resetting may be appropriate during eradication and recovery, but performing them before containment and evidence collection can destroy useful forensic artifacts and leave the C2 infrastructure accessible from other affected systems. CBRFIR Incident Response Techniques objective 3.5 requires selecting mitigations from evaluated EDR, SIEM, IPS, and related alerts. Cisco CBRFIR v1.2 exam topics

118. Frage
An engineer notices irregular traffic spikes during off-hours in a network-monitoring tool. The spikes involve large outbound data transfers to an IP address geolocated in a high-risk jurisdiction. The traffic uses encrypted channels typically associated with secure file transfers. Which action should the engineer take to analyze the network traffic associated with these potentially malicious activities?

A. Increase network bandwidth to accommodate the spikes and avoid potential service disruptions.
B. Disregard the traffic as a false positive because encrypted channels imply secure communication.
C. Use the network-monitoring tool to track packet payloads and destinations, and cross-reference them with threat-intelligence databases for known malicious IP addresses or domains.
D. Schedule a maintenance window to update network-encryption protocols and continue monitoring for further anomalies.

Antwort: C

Begründung:
Option B is the only choice that performs evidence-driven traffic analysis. The engineer should inspect available packet and flow metadata, identify source and destination endpoints, measure transfer timing and volume, and correlate the external infrastructure with reliable threat intelligence. Encryption protects content in transit but does not prove the communication is benign; destination, certificate, protocol, session, and flow characteristics can still expose malicious activity. Increasing bandwidth merely accommodates possible exfiltration, while delaying analysis for maintenance leaves the risk unresolved. CBRFIR Forensics Processes objective 4.3 specifically requires analysis of traffic associated with malicious activity using network- monitoring tools, including NetFlow and Wireshark. Incident Response Techniques objective 3.9 also supports correlating internal observations with external threat intelligence to determine IOCs and IOAs.
Preserve packet captures and flow records before containment changes remove volatile evidence. Cisco CBRFIR v1.2 exam topics

119. Frage
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