Cisco 350-901 Practice Test

350-901 practice test: what's covered

• APIs
• Containerization
• Secure CI/CD
• Network Automation

Free 350-901 sample questions

1. Which distributed data management pattern are you implementing?

   • A. Saga Pattern with Event Sourcing
   • B. Two-Phase Commit (2PC)
   • C. API Composition Pattern
   • D. Command Query Responsibility Segregation
   Show answer

   Correct: A. The Saga pattern manages distributed transactions through a sequence of local transactions, publishing events to trigger subsequent steps. This avoids the locking overhead of Two-Phase Commit (2PC). API Composition is for querying, and CQRS separates read/write models but doesn't inherently handle distributed transactions.

2. Which two practices align with the 12-factor application methodology? (Choose two)

   • A. Store configuration variables in environment variables.
   • B. Hardcode credentials in a dedicated config.py file.
   • C. Treat backing services as attached resources.
   • D. Deploy different codebases for staging and production.
   Show answer

   Correct: A and C. The 12-factor methodology explicitly dictates storing config in environment variables (not hardcoded config files) and treating backing services (databases, message queues) as attached resources. It also mandates a single codebase tracked in version control for all deployments, not separate codebases.

3. Which HTTP header is typically used by REST APIs to provide pagination links?

   • A. Link header containing next and prev URLs
   • B. Content-Range header specifying byte limits
   • C. X-Pagination-Total header
   • D. Authorization header for the next token
   Show answer

   Correct: A. REST APIs, following RFC 5988, commonly use the 'Link' HTTP header to provide related URIs for pagination, such as rel="next" or rel="prev". While some APIs might use custom X-Headers for total counts, the standard way to provide actual pagination URLs is the Link header.

4. Which two mechanisms can be used to achieve real-time message notification for a Webex bot? (Choose two)

   • A. Registering a Webhook for message created events
   • B. Using the Webex Teams WebSocket (WebSocket) API
   • C. Polling the /messages endpoint every millisecond
   • D. Using an SNMP trap configuration on Webex
   Show answer

   Correct: A and B. Webex bots can receive real-time updates via Webhooks (HTTP callbacks) or by establishing a WebSocket connection. Polling every millisecond is highly inefficient and will lead to rate-limiting. SNMP is a network management protocol, entirely unrelated to Webex message notifications.

5. At which stage of the CI/CD pipeline should the container image scanning ideally occur?

   • A. After building the image and before pushing to the registry
   • B. After deployment to the production Kubernetes cluster
   • C. During the initial source code checkout step
   • D. During the unit testing phase of the application code
   Show answer

   Correct: A. Image scanning should occur immediately after the image is built and before it's pushed to a registry (or before deployment) to catch vulnerabilities early. Scanning after production deployment is too late. Source code checkout and unit testing stages occur before the container image is even assembled.

Last updated: 2026-10-19

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