CCNA Cyber Ops (Version 1.1) – Chapter 12 Exam Answers Full

CCNA Cyber Ops (Version 1.1) – Chapter 12 Exam Answers Full
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1. How is the hash value of files useful in network security investigations?

  • It helps identify malware signatures.
  • It is used to decode files.
  • It is used as a key for encryption.
  • It verifies confidentiality of files.

2. Which tool is a Security Onion integrated host-based intrusion detection system?

  • Sguil
  • ELSA
  • Snort

3. Which type of evidence supports an assertion based on previously obtained evidence?

  • direct evidence
  • corroborating evidence
  • best evidence
  • indirect evidence

4. Which tool is developed by Cisco and provides an interactive dashboard that allows investigation of the threat landscape?

  • Wireshark
  • Talos
  • Sguil
  • Snort

5. Which term is used to describe the process of converting log entries into a common format?

  • standardization
  • normalization
  • classification
  • systemization

6. According to NIST, which step in the digital forensics process involves extracting relevant information from data?

  • collection
  • examination
  • analysis
  • reporting

7. A law office uses a Linux host as the firewall device for the network. The IT administrator is adding a rule to the firewall iptables to block internal hosts from connecting to a remote device that has the IP address Which command should the administrator use?

  • iptables -I FORWARD -p tcp -d –dport 7777 -j DROP
  • iptables -I INPUT -p tcp -d –dport 7777 -j DROP
  • iptables -I PASS -p tcp -d –dport 7777 -j DROP
  • iptables -I OUTPUT -p tcp -d –dport 7777 -j DROP

8. What procedure should be avoided in a digital forensics investigation?

  • Secure physical access to the computer under investigation.
  • Reboot the affected system upon arrival.
  • Make a copy of the hard drive.
  • Recover deleted files.

9. Which statement describes a feature of timestamps in Linux?

  • Human readable timestamps measure the number of seconds that have passed since January 1, 1970.
  • All devices generate human readable and Unix Epoch timestamps.
  • It is easier to work with Unix Epoch timestamps for addition and subtraction operations.
  • Unix Epoch timestamps are easier for humans to interpret.

10. Which tool is included with Security Onion that is used by Snort to automatically download new rules?

  • Sguil
  • Wireshark
  • ELSA
  • PulledPork

11. Which tool would an analyst use to start a workflow investigation?

  • ELSA
  • Bro
  • Sguil
  • Snort

12. What is indicated by a Snort signature ID that is below 3464?

  • The SID was created by Sourcefire and distributed under a GPL agreement.
  • This is a custom signature developed by the organization to address locally observed rules.
  • The SID was created by members of EmergingThreats.
  • The SID was created by the Snort community and is maintained in Community Rules.

13. How does an application program interact with the operating system?

  • accessing BIOS or UEFI
  • making API calls
  • sending files
  • using processes

14. A threat actor has successfully breached the network firewall without being detected by the IDS system. What condition describes the lack of alert?

  • true negative
  • true positive
  • false positive
  • false negative

15. Use the following scenario to answer the questions. A company has just had a cybersecurity incident. The threat actor or actors appeared to have a goal of network disruption and appeared to use a common security hack tool that overwhelmed a particular server with a large amount of traffic, which rendered the server inoperable.

a. How would a certified cybersecurity analyst classify this type of threat actor?

  • amateur
  • hacktivist
  • state-sponsored
  • terrorist

b. The security team at this company has removed the compromised server and preserved it with the security hack still embedded. What type of evidence is this?

  • best
  • classified
  • corroborating
  • indirect

c. Which type of attack was achieved?

  • access
  • DoS
  • DDoS
  • social engineering

d. What would be the threat attribution in this case?

  • evaluating the server alert data
  • obtaining the most volatile evidence
  • determining who is responsible for the attack
  • reporting the incident to the proper authorities

e. What are three common tools used to carry out this type of attack? (Choose three.)

  • ping sweep
  • TCP SYN flood
  • buffer overflow
  • IP, MAC, and DHCP spoofing
  • smurf attack
  • man-in-the-middle

16. Refer to the exhibit. A network security specialist issues the command tcpdump to capture events. What is the function provided by the ampersand symbol used in the command?

  • It instructs the tcpdump to capture data that starts with the symbol.
  • It tells the Linux shell to execute the tcpdump process in the background.
  • It tells the Linux shell to display the captured data on the console.
  • It tells the Linux shell to execute the tcpdump process indefinitely.

17. Refer to the exhibit. A cybersecurity analyst is using Sguil to verify security alerts. How is the current view sorted?

  • by sensor number
  • by source IP
  • by frequency
  • by date/time

18. Which three procedures in Sguil are provided to security analysts to address alerts? (Choose three.)

  • Expire false positives.
  • Pivot to other information sources and tools.
  • Construct queries using Query Builder.
  • Escalate an uncertain alert.
  • Correlate similar alerts into a single line.
  • Categorize true positives.

19. Which two strings will be matched by the regular expression? (Choose two.)

  • Level4
  • Level3
  • Level2
  • Level1
  • Level12

20. Which statement describes the status after the Security Onion VM is started?

  • SGUIL becomes enabled via the sudo sguil -e terminal command.
  • Awk becomes enabled via the sudo awk terminal command.
  • Pullpork is used by ELSA as an open source search engine.
  • Snort is enabled by default.

21. What are the three core functions provided by the Security Onion? (Choose three.)

  • business continuity planning
  • full packet capture
  • alert analysis
  • intrusion detection
  • security device management
  • threat containment

22. Refer to the exhibit. A network security analyst is using the Follow TCP Stream feature in Wireshark to rebuild the TCP transaction. However, the transaction data seems indecipherable. What is the explanation for this?

  • The transaction data is encoded with Base64.
  • The transaction data is a binary file.
  • The data shown is line noise.
  • The transaction data is corrupted.

23. What is the tool that has alert records linked directly to the search functionality of the Enterprise Log Search and Archive (ELSA)?

  • Sguil
  • Wireshark
  • CapME
  • Snort

24. Refer to the exhibit. A network security analyst is examining captured data using Wireshark. The captured frames indicate that a host is downloading malware from a server. Which source port is used by the host to request the download?

  • 66
  • 1514
  • 6666
  • 48598

25. Which two types of unreadable network traffic could be eliminated from data collected by NSM? (Choose two.)

  • routing updates traffic
  • STP traffic
  • SSL traffic
  • IPsec traffic
  • broadcast traffic

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