CSSLP Secure Software Deployment Operations And Management — Timed 10 Questions

Question 1

You are troubleshooting a production incident where a legacy application is performing insecure cryptographic operations. Which feature of a Web Application Firewall (WAF) can best help mitigate the risk while a code fix is being developed?

10 minute time limit — choose an answer to begin.

Accepted Answer

Deploy a custom WAF rule to block requests containing anomalous cryptographic parameters.. A WAF can inspect incoming requests and apply custom rules to detect and block patterns indicative of insecure cryptographic operations, such as weak algorithms, short keys, or malformed parameters. By deploying a custom rule, you can virtually patch the legacy application without modifying its code, providing immediate risk mitigation while a proper code fix is developed. This aligns with the CSSLP principle of compensating controls during incident response.

Answer

Upgrade the SSL/TLS certificate to a higher bit-length.

Answer

Enable HTTP/2 protocol enforcement on the WAF load balancer.

Answer

Disable the WAF's logging feature to improve response time during the incident.

Question 2

You are deploying a web application to AWS using Elastic Beanstalk. To ensure secure configuration management, you decide to store sensitive database credentials. Which approach is the most secure according to AWS best practices?

Accepted Answer

Use AWS Secrets Manager to inject secrets as environment variables during instance bootstrap.. AWS Secrets Manager is purpose-built for storing, rotating, and retrieving secrets, and integrates with Elastic Beanstalk to inject secrets as environment variables during instance bootstrap. This keeps credentials out of source code, config files, and the console, and supports automatic rotation via Lambda. It aligns with AWS Well-Architected security best practices for secret management.

Answer

Hardcode the credentials in the application code and use AWS KMS to encrypt the binary at rest.

Answer

Use the Elastic Beanstalk Console to set plain-text environment properties.

Answer

Store credentials in the .ebextensions/environment.config file with read-only permissions.

Question 3

You are implementing 'Blue-Green' deployment. What is the most critical security step to perform during the cut-over process?

Accepted Answer

Run automated security integration tests on the Green environment while it is behind the load balancer.. Running automated security integration tests on the Green environment while it is behind the load balancer is the most critical security step because it validates the security posture of the new environment before it receives production traffic. This ensures that vulnerabilities are identified and addressed prior to cut-over, reducing the risk of exposing sensitive data or services. It aligns with the principle of testing in a production-like environment without impacting users.

Answer

Immediately shut down the Blue environment to save costs.

Answer

Update the load balancer configuration to point to both environments simultaneously.

Answer

Ensure both environments use the same shared database instance.

Question 4

When setting up operational monitoring, what is the 'Golden Signal' that specifically indicates a potential Denial of Service (DoS) attack?

Accepted Answer

A significant increase in the rate of 5xx errors and request latency.. A sudden spike in error rates or latency, combined with high request volume, is a primary indicator of a DoS attack.

Answer

An increase in the number of developers logged into the system.

Answer

A decrease in CPU utilization across all servers.

Answer

A reduction in database write operations.

Question 5

You are managing secure deployment for a Java application. You need to ensure that the application runtime does not have excessive permissions. Which runtime security practice is most effective?

Accepted Answer

Configure a custom Java Security Manager policy file to restrict access to sensitive system resources.. A custom Java Security Manager policy file enforces fine-grained runtime permissions, restricting the application's access to files, sockets, system properties, and other sensitive resources according to least privilege. This directly addresses the requirement that the runtime not have excessive permissions, limiting damage if the app is compromised.

Answer

Run the Java application as the root user to ensure all permissions are available.

Answer

Disable the Java Virtual Machine's garbage collection to prevent memory-based attacks.

Answer

Assign a public IP address to the application server to facilitate remote debugging.

Question 6

A DevOps team is preparing a rollback strategy for a high-traffic e-commerce application that uses a relational database with schema migrations. The team must ensure that a failed deployment can be reversed safely without data loss. Which two practices best support a secure and reliable rollback? (Choose two.)

Accepted Answer

Design database migrations to be backward compatible so the previous application version can still read and write the schema after a rollback.. Backward-compatible schema migrations let the previous application version keep functioning against the database, and feature flags allow new behavior to be disabled instantly without redeploying. Together they enable fast, safe reversal with minimal data risk, which is essential for a high-traffic e-commerce application where downtime and data loss are unacceptable.

Answer

Apply all schema migrations and application changes in a single atomic deployment step so the state is never partially updated.

Answer

Take a full database backup immediately before every deployment and restore it if the release fails.

Answer

Schedule rollbacks only during the nightly maintenance window to avoid impacting live customer sessions.

Question 7

During an incident response, you identify that a threat actor has gained unauthorized access to an application's environment variables. What is the immediate correct step to take regarding credential management?

Accepted Answer

Change the password for the database user and update the application deployment manifest.. When environment variables containing credentials are compromised, the immediate step is to rotate the exposed credentials—specifically, change the database user's password and update the application deployment manifest to use the new password. This invalidates the attacker's access and restores secure authentication. The other options do not address the credential compromise directly.

Answer

Clear the application's cache to remove any temporary sensitive data.

Answer

Increase the logging level to 'DEBUG' to track the attacker's actions.

Answer

Re-deploy the application using the same configuration to ensure a clean state.

Question 8

To ensure secure deployment of software artifacts, you must verify the integrity of the binaries. Which mechanism is most effective for ensuring that artifacts have not been tampered with since they were signed by the build system?

Accepted Answer

Verify the digital signature using a trusted public key from your organization's key store.. Cryptographic signing (such as GPG or Cosign for containers) creates a verifiable link between the source code and the binary.

Answer

Check the file timestamp using the operating system's file system metadata.

Answer

Upload the artifact to a public VirusTotal scan before deploying.

Answer

Compare the file size of the artifact with the size listed in the manifest file.

Question 9

A security analyst notices anomalous outbound traffic from a containerized microservice that was recently deployed. Which Kubernetes feature should be used to restrict this traffic to only known authorized endpoints?

Accepted Answer

Apply a NetworkPolicy object that defines specific egress rules for the application namespace.. A NetworkPolicy object with specific egress rules is correct because Kubernetes NetworkPolicy provides pod-level, namespace-scoped control over ingress and egress traffic. By defining egress rules that allow only known authorized endpoints (IP blocks, ports, or namespace selectors), the analyst can restrict the microservice's outbound traffic. This directly addresses anomalous outbound connections at the network layer.

Answer

Enable the Kubernetes Audit Log and monitor for kubectl exec commands.

Answer

Configure PodSecurityPolicies to restrict the containers to non-root users.

Answer

Install a Service Mesh like Istio to enforce mTLS.

Question 10

Which of the following is a primary objective of 'Secure Configuration Management' in the software lifecycle?

Accepted Answer

Maintaining a consistent and hardened state across all environments.. Secure Configuration Management ensures systems are deployed and maintained in a known, hardened, consistent state across development, test, and production — removing default accounts, disabling unnecessary services, applying CIS benchmarks, and detecting drift. Consistency across environments prevents 'it works in dev but is insecure in prod' gaps and supports reproducible audits.

Answer

Reducing the total cost of ownership of the cloud infrastructure.

Answer

Ensuring that developers have administrative access to production databases.

Answer

Maximizing the number of features delivered in each release.