ISC Systems Security Implementation Verification And Validation — 10 Questions

Question 1

You are performing a security validation of a Kubernetes cluster using CIS Benchmarks. Which tool should you use to automate the verification of the 'etcd' configuration settings?

Accepted Answer

Run 'kube-bench --targets etcd' to perform the automated audit.. kube-bench is the industry-standard tool for checking Kubernetes against CIS benchmarks.

Answer

Use 'kubectl get pods' to check the etcd pod configuration.

Answer

Perform a manual audit using 'etcdctl get --prefix /'.

Answer

Use the 'kubectl describe nodes' command to check for node hardening.

Question 2

When validating the security implementation of a Cisco ASA firewall, which command provides the most accurate verification of the currently applied Access Control List (ACL) to a specific interface?

Accepted Answer

show access-list. The 'show access-list' command displays the ordered list of rules and their hit counts, which is vital for validation.

Answer

show run interface

Answer

show version

Answer

show interface status

Question 3

A security engineer is validating the implementation of a TLS 1.3 configuration on an Nginx server. Which configuration directive must be verified to ensure only secure ciphers are used?

Accepted Answer

ssl_protocols TLSv1.3;. The 'ssl_protocols' and 'ssl_ciphers' directives are critical for TLS implementation verification.

Answer

ssl_session_cache shared:SSL:10m;

Answer

ssl_prefer_server_ciphers on;

Answer

ssl_verify_client on;

Question 4

During a penetration test of a web application, you identify an insecure direct object reference (IDOR). What is the most effective way to verify that your remediation via access control checks is successful?

Accepted Answer

Execute automated authorization testing using a tool like Burp Suite Intruder to verify that non-authorized users receive a 403 Forbidden response.. Regression testing ensures that the fix addresses the vulnerability without breaking functionality.

Answer

Review the source code to ensure that the developer used a random UUID instead of sequential integers.

Answer

Run a vulnerability scanner to check for OWASP Top 10 compliance.

Answer

Perform a manual cross-site scripting (XSS) payload injection to confirm input sanitization.

Question 5

A security engineer is validating an AWS environment using AWS Config. Which action should be taken to ensure continuous compliance monitoring against a custom security policy?

Accepted Answer

Deploy an AWS Config custom rule using an AWS Lambda function to evaluate resource configurations.. AWS Config rules allow for the definition of custom policies that trigger evaluations based on resource configuration changes.

Answer

Configure Amazon GuardDuty to alert on unauthorized resource modifications.

Answer

Use AWS Trusted Advisor to scan for unencrypted S3 buckets.

Answer

Enable AWS CloudTrail to log all API calls and review the logs for policy violations.

Question 6

You are verifying the implementation of a FIPS 140-2 validated module in an on-premises Linux server. Which command correctly verifies that the cryptographic module is operating in the intended FIPS mode?

Accepted Answer

Run 'cat /proc/sys/crypto/fips_enabled' and confirm the output is 1.. The fips-mode-setup command or checking the kernel parameter is the standard way to verify the module state on RHEL-based systems.

Answer

Inspect '/etc/fips.conf' for the FIPS_ENABLED=true directive.

Answer

Check the status using 'systemctl status crypto-policy'.

Answer

Execute 'openssl verify -CApath /etc/ssl/certs' to validate certificate chains.

Question 7

You are verifying the implementation of disk encryption on a Windows server. Which command is used to confirm that BitLocker is active on the C: drive?

Accepted Answer

manage-bde -status C:. manage-bde is the CLI tool for BitLocker administration.

Answer

cipher /e

Answer

bitlocker-check

Answer

diskpart /info

Question 8

During a system accreditation process, you need to verify that logs are being sent to a centralized SIEM. Which method provides the most reliable verification of log integrity?

Accepted Answer

Verify the use of mutual TLS (mTLS) and log hashing/signing in the syslog configuration.. Log integrity is verified by ensuring the logs are digitally signed or protected from tampering during transit.

Answer

Verify that the SIEM administrative account has read-only permissions.

Answer

Review the firewall logs to see if port 514 is open.

Answer

Check if the SIEM has received a sample log entry via 'tail -f'.

Question 9

An organization uses an HSM to store root CA keys. As part of the annual validation, which action must be performed to confirm the HSM's physical security posture?

Accepted Answer

Verify the presence and integrity of tamper-evident seals on the chassis.. Physical tamper evidence is a critical component of HSM security validation.

Answer

Perform an audit of the HSM's internal log files.

Answer

Verify the HSM firmware version against the manufacturer's website.

Answer

Test the HSM's response to an incorrect PIN retry threshold.

Question 10

When validating the security of a database implementation, how do you verify that sensitive data at rest is encrypted using Transparent Data Encryption (TDE)?

Accepted Answer

Query the sys.dm_database_encryption_keys dynamic management view.. Verifying the system catalog or dynamic management views is the standard way to confirm TDE status.

Answer

Check if the database folder has the 'encrypted' flag set in Windows File Properties.

Answer

Attempt to open the database file in a text editor.

Answer

Use the 'encrypt' command in the database shell.