Cisco 300-215 Online Practice Questions and Exam Preparation

Cisco 300-215 Online Questions & Answers

• Question 1:

  Refer to the exhibit.

  

  What is occurring within the exhibit?

  A. Source 10.1.21.101 sends HTTP requests with the size of 302 kb.
  B. Host 209.141.51.196 redirects the client request from /Lk9tdZ to /files/1.bin.
  C. Host 209.141.51.196 redirects the client request to port 49723.
  D. Source 10.1.21.101 is communicating with 209.141.51.196 over an encrypted channel.
  B. Host 209.141.51.196 redirects the client request from /Lk9tdZ to /files/1.bin.

  ---

  The Wireshark capture shows a series of HTTP requests and responses: The client (10.1.21.101) sends a GET request for/Lk9tdZ. The server (209.141.51.196) responds withHTTP/1.1 302 Found, which is a standard HTTP status code indicating a redirection. The subsequent GET request from the client is for/files/1.bin, which indicates it followed the redirect. This behavior confirms that the server is issuing an HTTP 302 redirect from the initial request path/Lk9tdZto /files/1.bin. This is often observed in malware command-and-control behavior or file download staging. Option A is incorrect: 302 is a status code, not a data size. Option C is incorrect: port 49723 is a source/destination ephemeral port, not a redirect target. Option D is incorrect: communication is over HTTP, not HTTPS (which would indicate encryption). CyberOps Technologies (CBRFIR) 300-215 study guide, Chapter on Network Traffic Analysis and HTTP Status Code Interpretation.

• Question 2:

  Refer to the exhibit.

  

  An employee notices unexpected changes and setting modifications on their workstation and creates an incident ticket. A support specialist checks processes and services but does not identify anything suspicious. The ticket was escalated to an analyst who reviewed this event log and also discovered that the workstation had multiple large data dumps on network shares. What should be determined from this information?

  A. data obfuscation
  B. reconnaissance attack
  C. brute-force attack
  D. log tampering
  D. log tampering

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  Explanation Explanation/Reference:The event log shown in the exhibit is Event ID 104 , which in Windows indicates "The audit log was cleared." This is a significant indicator of log tampering , a common post-exploitation technique used by attackers to hide their tracks after exfiltrating data or performing unauthorized actions. The Cisco CyberOps Associate guide mentions: "Log deletion events, especially Event ID 104, should be treated as potential evidence of malicious activity attempting to cover tracks". Combined with large data dumps to network shares, this indicates not only unauthorized activity but also deliberate efforts to erase forensic evidence--characteristic of log tampering .

• Question 3:

  Multiple machines on a network begin to behave abnormally. A sandbox analysis confirms the presence of malware. What is the most important next step for the administrator to determine?

  

  A. if Patient 0 still demonstrates suspicious behavior
  B. source code of the malicious attachment
  C. if the file in Patient 0 is encrypted
  D. if Patient 0 tried to connect to another workstation
  D. if Patient 0 tried to connect to another workstation

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  Explanation Explanation/Reference:The key goal during lateral movement analysis is to determine whether the malware spread or attempted to spread beyond the initially compromised system. This is crucial for containment and scoping of the incident. Logs, sandbox behavior, or network activity may show if Patient 0 initiated outbound connections to other systems, potentially propagating malware across the environment. Correct answer: D. if Patient 0 tried to connect to another workstation.

• Question 4:

  Refer to the exhibit.

  

  Which two actions should be taken as a result of this information? (Choose two.)

  A. Block any URLs in received emails.
  B. Blacklist IPs 164.90.168.78 and 199.19.224.83.
  C. Block any access to and from domain apponline-8473.xyz.
  D. Block any malicious activity with xfe-threat-score-10.
  E. Block all emails sent from malicious domain apponline-8473.xyz.
  B. Blacklist IPs 164.90.168.78 and 199.19.224.83.
  C. Block any access to and from domain apponline-8473.xyz.

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  Explanation Explanation/Reference:Comprehensive and Detailed The exhibit contains STIX (Structured Threat Information Expression) formatted threat intelligence indicating: A phishing indicator related to the domain:apponline-8473.xyz Associated malicious IP addresses:164.90.168.78and199.19.224.83 Labelled as "malicious-activity" with "xfe-threat-score-10" Based on this: Option B is correct: The IP addresses explicitly listed in the pattern field should be blacklisted to prevent command-and-control or malicious connections. Option C is correct: The domainapponline-8473.xyzis also listed and flagged as involved in phishing, so DNS and firewall rules should block access to and from this domain. Options A and E are too broad or speculative; the data specifies a specific domain, not a generic block on all emails or URLs. Option D refers to a label used for classification and not a directly actionable item.

• Question 5:

  A new zero-day vulnerability is discovered in the web application. Vulnerability does not require physical access and can be exploited remotely. Attackers are exploiting the new vulnerability by submitting a form with malicious content that grants them access to the server. After exploitation, attackers delete the log files to hide traces. Which two actions should the security engineer take next? (Choose two.)

  A. Validate input upon submission.
  B. Block connections on port 443.
  C. Install antivirus.
  D. Update web application to the latest version.
  E. Enable file integrity monitoring.
  A. Validate input upon submission.
  E. Enable file integrity monitoring.

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  Explanation Explanation/Reference:Input validation (A) is a critical countermeasure to defend against command injection and related vulnerabilities, as discussed in the Cisco guide. Proper validation ensures that malicious commands or payloads are not accepted or executed by the web application. File integrity monitoring (E) helps detect unauthorized changes such as log deletion or binary modification, making it a crucial tool in recognizing and investigating tampering attempts.Blocking port 443 (B) would disable HTTPS and is not a practical solution. Antivirus (C) does not prevent form- based application attacks, and merely updating the application (D) may not be sufficient without addressing the underlying input validation flaw.

• Question 6:

  Refer to the exhibit.

  

  A network administrator creates an Apache log parser by using Python. What needs to be added in the box where the code is missing to accomplish the requirement?

  A. r'\d(1,3),\d(1.3),\d{13}.df{1,3}'
  B. r'*\b'
  C. r''\b{1-9}[0-9}\b' r'\d{1,3}.
  D. \d{1,3}.\d{1,3}.\d{1,3}'
  D. \d{1,3}.\d{1,3}.\d{1,3}'

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  Explanation Explanation/Reference:The goal of the given Python code is to parse an Apache access log and extract IP addresses using regular expressions (regex). In this context, the most appropriate regex pattern to extract IPv4 addresses from log data is: r'\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}' This pattern matches typical IPv4 addresses, where each octet consists of 1 to 3 digits separated by periods. For example, it matches addresses like192.168.1.1or10.0.0.123. The pattern uses: \d{1,3}to capture between 1 and 3 digits, \.to match the dot (escaped since.is a special character in regex), repeated 4 times with proper separation to form the full IPv4 structure. Options A, B, and C either include incorrect syntax, improper escape sequences, or do not represent a valid IP address pattern. This type of log analysis and pattern extraction is described in the Cisco CyberOps Associate curriculum under basic scripting and automation techniques used in log and artifact analysis. CyberOps Technologies (CBRFIR) 300-215 study guide, Section: "Basic Python Scripting for Security Analysts" and "Log Analysis and Data Extraction using Regex."

• Question 7:

  DRAG DROP

  Drag and drop the capabilities on the left onto the Cisco security solutions on the right.

  Select and Place:

  

  

• Question 8:

  Refer to the exhibit.

  

  A company that uses only the Unix platform implemented an intrusion detection system. After the initial configuration, the number of alerts is overwhelming, and an engineer needs to analyze and classify the alerts. The highest number of alerts were generated from the signature shown in the exhibit. Which classification should the engineer assign to this event?

  A. True Negative alert
  B. False Negative alert
  C. False Positive alert
  D. True Positive alert
  C. False Positive alert

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  The alert shown is based on a Snort rule for a Unicode directory traversal attack against IIS web servers (Microsoft platform). The key detail here is the payload content"../..%c0%af../"which is a classic IIS-specific exploit related to CVE-20000884 . Since the company only uses Unix systems , they are not vulnerable to this IIS-specific attack. Therefore, these alerts are triggered by irrelevant traffic or misapplied signatures, resulting in False Positives .

• Question 9:

  Refer to the exhibit.

  

  A cybersecurity analyst is presented with the snippet of code used by the threat actor and left behind during the latest incident and is asked to determine its type based on its structure and functionality. What is the type of code being examined?

  A. simple client-side script for downloading other elements
  B. basic web crawler for indexing website content
  C. network monitoring script for capturing incoming traffic
  D. socket programming listener for TCP/IP communication
  D. socket programming listener for TCP/IP communication

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  Explanation Explanation/Reference:The Python code snippet: Usessocket.socket(AF_INET, SOCK_STREAM), which indicatesTCP communication Connects to a remote server (192.168.1.10on port 80) Sends a manual HTTPGETrequest Receives the response usings.recv() This is a classic example of TCP/IP socket programming , specifically creating a simple TCP client to communicate with a web server. It does not monitor traffic or crawl websites -- it sends a crafted request and prints the response.

• Question 10:

  Refer to the exhibit.

  

  What is the IOC threat and URL in this STIX JSON snippet?

  A. malware;`http://x4z9arb.cn/4712/'
  B. malware; x4z9arb backdoor
  C. x4z9arb backdoor;http://x4z9arb.cn/4712/
  D. malware; malware--162d917e-766f-4611-b5d6-652791454fca
  E. stix;`http://x4z9arb.cn/4712/'
  A. malware;`http://x4z9arb.cn/4712/'

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  Explanation Explanation/Reference:This STIX (Structured Threat Information eXpression) JSON snippet provides two key elements relevant for IOC (Indicator of Compromise) analysis: The indicator pattern shows a suspicious URL:# "pattern": "[url:value = 'http://x4z9rb.cn/4712/']" This is the actual IOC that can be used for detection. The type of object that the indicator relates to:# "type": "malware"# "name": "x4z9arb backdoor"This indicates the nature of the threat associated with the IOC is malware. Therefore, the threat is "malware" and the associated indicator (IOC) is the URL: http://x4z9rb.cn/4712/ Option A correctly captures both the IOC category ("malware") and the indicator value ("http://x4z9rb.cn/4712/"). CyberOps Technologies (CBRFIR) 300-215 study guide, Chapter on "Understanding Threat Intelligence Platforms," including the use of STIX/TAXII for representing threat data.