CCOA 試験問題を無料オンラインアクセス

試験コード:	CCOA
試験名称:	ISACA Certified Cybersecurity Operations Analyst
認定資格:	ISACA
無料問題数:	140
更新日:	2025-10-26
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トータル 140 問

問題 1

Which of the following Is the MOST effective way to ensure an organization's management of supply chain risk remains consistent?

A.Periodically counting the number of incident tickets associated with supplier services
B.Regularly seeking feedback from the procurement team regarding supplier responsiveness
C.Regularly meeting with suppliers to informally discuss Issues
D.Periodically confirming suppliers' contractual obligations are met

問題 2

Analyze the file titled pcap_artifact5.txt on the AnalystDesktop.
Decode the targets within the file pcap_artifact5.txt.
Select the correct decoded targets below.
10cal.com/exam
clOud-s3cure.com
c0c0nutf4rms.net
h3avy_s3as.biz
b4ddata.org

正解：

See the solution in Explanation.
Explanation:
To decode thetargetswithin the filepcap_artifact5.txt, follow these steps:
Step 1: Access the File
* Log into the Analyst Desktop.
* Navigate to theDesktopand locate the file:
pcap_artifact5.txt
* Open the file using a text editor:
* OnWindows:
nginx
notepad pcap_artifact5.txt
* OnLinux:
cat ~/Desktop/pcap_artifact5.txt
Step 2: Examine the File Contents
* Analyze the contents to identify the encoding format. Common formats include:
* Base64
* Hexadecimal
* URL Encoding
* ROT13
Example Encoded Data (Base64):
makefile
MTBjYWwuY29tL2V4YW0K
Y2xPdWQtczNjdXJlLmNvbQpjMGMwbnV0ZjRybXMubmV0CmgzYXZ5X3MzYXMuYml6CmI0ZGRhdGEu Step 3: Decode the Contents Method 1: Using PowerShell (Windows)
* OpenPowerShell:
powershell
$encoded = Get-Content "C:\Users\<Username>\Desktop\pcap_artifact5.txt"
[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($encoded))
* This command will display the decoded targets.
Method 2: Using Linux
* Usebase64 decoding:
base64 -d ~/Desktop/pcap_artifact5.txt
* If the content appears to behexadecimal, use:
xxd -r -p ~/Desktop/pcap_artifact5.txt
* ForURL encoding, use:
echo -e $(cat ~/Desktop/pcap_artifact5.txt | sed 's/%/\\x/g')
Step 4: Analyze the Decoded Output
* The decoded content should reveal domain names or URLs.
* Check for valid domain structures, such as:
10cal.com/exam
clOud-s3cure.com
c0c0nutf4rms.net
h3avy_s3as.biz
b4ddata.org
Example Decoded Output:
10cal.com/exam
clOud-s3cure.com
c0c0nutf4rms.net
h3avy_s3as.biz
b4ddata.org
Step 5: Verify the Decoded Targets
* Cross-reference the decoded domains with knownthreat intelligence feedsto check for any malicious indicators.
* Use tools likeVirusTotalorURLHausto verify the domains.
10cal.com/exam
clOud-s3cure.com
c0c0nutf4rms.net
h3avy_s3as.biz
b4ddata.org
Step 6: Document the Finding
* Decoded Targets:
10cal.com/exam
clOud-s3cure.com
c0c0nutf4rms.net
h3avy_s3as.biz
b4ddata.org
* Source File:pcap_artifact5.txt
* Decoding Method:Base64 (or the identified method)

問題 3

Which of the following should be considered FIRST when determining how to protect an organization's information assets?

A.The organization's risk reporting
B.Results of vulnerability assessments
C.The organization's business model
D.A prioritized Inventory of IT assets

問題 4

Which of the following BEST describes JSON web tokens?

A.They can be used to store user Information and session data.
B.They are signed using a public key and verified using a private key.
C.They can only be used to authenticate users in web applications.
D.They are only used with symmetric encryption.

問題 5

The CISO has received a bulletin from law enforcementauthorities warning that the enterprise may be at risk ofattack from a specific threat actor. Review the bulletin named CCOA Threat Bulletin.pdf on the Desktop.
Which of the following domain name(s) from the CCOAThreat Bulletin.pdf was contacted between 12:10 AMto 12:12 AM (Absolute) on August 17, 2024?

正解：

See the solution in Explanation.
Explanation:
Step 1: Understand the Objective
Objective:
* Identify thedomain name(s)that werecontactedbetween:
12:10 AM to 12:12 AM on August 17, 2024
* Source of information:
CCOA Threat Bulletin.pdf
* File location:
~/Desktop/CCOA Threat Bulletin.pdf
Step 2: Prepare for Investigation
2.1: Ensure Access to the File
* Check if the PDF exists:
ls ~/Desktop | grep "CCOA Threat Bulletin.pdf"
* Open the file to inspect:
xdg-open ~/Desktop/CCOA\ Threat\ Bulletin.pdf
* Alternatively, convert to plain text for easier analysis:
pdftotext ~/Desktop/CCOA\ Threat\ Bulletin.pdf ~/Desktop/threat_bulletin.txt cat ~/Desktop/threat_bulletin.txt
2.2: Analyze the Content
* Look for domain names listed in the bulletin.
* Make note ofany domainsorURLsmentioned as IoCs (Indicators of Compromise).
* Example:
suspicious-domain.com
malicious-actor.net
threat-site.xyz
Step 3: Locate Network Logs
3.1: Find the Logs Directory
* The logs could be located in one of the following directories:
/var/log/
/home/administrator/hids/logs/
/var/log/httpd/
/var/log/nginx/
* Navigate to the likely directory:
cd /var/log/
ls -l
* Identify relevant network or DNS logs:
ls -l | grep -E "dns|network|http|nginx"
Step 4: Search Logs for Domain Contacts
4.1: Use the Grep Command to Filter Relevant Timeframe
* Since we are looking for connections between12:10 AM to 12:12 AMonAugust 17, 2024:
grep "2024-08-17 00:1[0-2]" /var/log/dns.log
* Explanation:
* grep "2024-08-17 00:1[0-2]": Matches timestamps between00:10and00:12.
* Replace dns.log with the actual log file name, if different.
4.2: Further Filter for Domain Names
* To specifically filter out the domains listed in the bulletin:
grep -E "(suspicious-domain.com|malicious-actor.net|threat-site.xyz)" /var/log/dns.log
* If the logs are in another file, adjust the file path:
grep -E "(suspicious-domain.com|malicious-actor.net|threat-site.xyz)" /var/log/nginx/access.log Step 5: Correlate Domains and Timeframe
5.1: Extract and Format Relevant Results
* Combine the commands to get time-specific domain hits:
grep "2024-08-17 00:1[0-2]" /var/log/dns.log | grep -E "(suspicious-domain.com|malicious-actor.net|threat- site.xyz)"
* Sample Output:
2024-08-17 00:11:32 suspicious-domain.com accessed by 192.168.1.50
2024-08-17 00:12:01 malicious-actor.net accessed by 192.168.1.75
* Interpretation:
* The command revealswhich domain(s)were contacted during the specified time.
Step 6: Verification and Documentation
6.1: Verify Domain Matches
* Cross-check the domains in the log output against those listed in theCCOA Threat Bulletin.pdf.
* Ensure that the time matches the specified range.
6.2: Save the Results for Reporting
* Save the output to a file:
grep "2024-08-17 00:1[0-2]" /var/log/dns.log | grep -E "(suspicious-domain.com|malicious-actor.net|threat- site.xyz)" > ~/Desktop/domain_hits.txt
* Review the saved file:
cat ~/Desktop/domain_hits.txt
Step 7: Report the Findings
Final Answer:
* Domain(s) Contacted:
* suspicious-domain.com
* malicious-actor.net
* Time of Contact:
* Between 12:10 AM to 12:12 AM on August 17, 2024
* Reasoning:
* Matched thelog timestampsanddomain nameswith the threat bulletin.
Step 8: Recommendations:
* Immediate Block:
* Add the identified domains to theblockliston firewalls and intrusion detection systems.
* Monitor for Further Activity:
* Keep monitoring logs for any further connection attempts to the same domains.
* Perform IOC Scanning:
* Check hosts that communicated with these domains for possible compromise.
* Incident Report:
* Document the findings and mitigation actions in theincident response log.

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