20+ practice questions focused on Application Deployment and Security — one of the most tested topics on the Cisco DevNet Associate 200-901 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Application Deployment and Security PracticeA developer creates a Dockerfile for a Python web application. Which instruction should be used to copy the application source code into the container image?
Explanation: The COPY instruction copies files or directories from the build context into the container filesystem. RUN executes commands, EXPOSE documents ports, and CMD sets default command.
A Docker container needs to be started in detached mode with port mapping from host port 8080 to container port 80. Which command accomplishes this?
Explanation: The -d flag runs container in detached mode, -p maps host port to container port.
In a docker-compose.yaml file, which key is used to define the container image to be built from a Dockerfile in the current directory?
Explanation: The 'build' key specifies the path to the Dockerfile context; 'image' specifies a pre-built image from a registry.
A company deploys a microservice using Kubernetes. The service must be accessible externally via a stable IP address and load-balanced across pods. Which Service type should be used?
Explanation: LoadBalancer exposes the service externally using a cloud provider's load balancer. ClusterIP is internal only, NodePort exposes on each node's IP, ExternalName maps to external DNS.
A CI/CD pipeline has a stage that runs security vulnerability scans on dependencies. Which tool is specifically designed to scan Python packages for known vulnerabilities?
Explanation: pip audit checks Python packages for vulnerabilities. npm audit is for Node.js, Snyk is a third-party tool, Dependabot automates dependency updates.
+15 more Application Deployment and Security questions available
Practice all Application Deployment and Security questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Application Deployment and Security. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Application Deployment and Security questions on the 200-901 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Application Deployment and Security is tested as part of the Cisco DevNet Associate 200-901 blueprint. Practicing with targeted Application Deployment and Security questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Application Deployment and Security is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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