CCNA Automation (DevNet Associate) Free Sample Questions

Both centralized and distributed version control systems provide branching and merging capabilities for collaborative software development. Version control systems like Git (distributed) and SVN (centralized) allow engineers to work on isolated branches, complete tasks independently, and merge changes back to feature or master branches. The other options are incorrect because central logging systems handle log data collection, model-driven programming is about using models to generate code, and code topology refers to code structure analysis, none of which provide version control branching and merging functionality. Reference: https://developer.cisco.com/docs/nx-os/#!why-version-control

Cisco DNA Center provides network controller-level management features as a centralized network management and automation platform. It serves as the central management plane for software-defined networks, offering intent-based networking capabilities, policy management, and automated network provisioning. The other options are incorrect because DNA Center does not gather real-time user information (that would be analytics tools), does not provision server/storage resources (that would be compute management), and is not focused on data-center class networking scalability but rather on enterprise network management. Reference: https://www.cisco.com/c/en/us/products/cloud-systems-management/index.html

Reference https://forums.docker.com/t/accessing-host-machine-from-within-docker- container/14248/4

A default gateway is the network entity that receives IP packets when there is no explicit next-hop route in the routing table. It serves as the default route (0.0.0.0/0) that handles all traffic destined for networks not specifically defined in the routing table. The other options are incorrect because route addresses are specific network destinations, MPLS is a protocol for traffic engineering and label switching, and Layer 2 frames operate at the data link layer rather than handling IP routing decisions. Reference: https://www.certificationkits.com/cisco-certification/ccna-articles/cisco-ccna-intro-to-routing-basics/cisco-ccna-default-gateway-a-default-routes/

UCS Manager and UCS Director both support XML or JSON-encoded API requests and require API key pairs in HTTP headers plus cookie-based authentication for secure API access. These Cisco UCS management platforms provide RESTful APIs that can handle both XML and JSON data formats for programmatic configuration and monitoring. The other options are incorrect because Cisco Intersight uses different authentication methods, Insight Director is not a UCS component, and Cisco Manager APIs is not a specific UCS element. Reference: https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/ucs-director/rest-api-getting-started-guide/6-5/cisco-ucs-director-REST-API-getting-started-65.html

The "clear NETCONF-yang session" command can clear non-responsive NETCONF sessions during global lock conflicts. This command terminates stale NETCONF sessions that may be holding locks and preventing other sessions from accessing the configuration datastore. The other options are incorrect because "show NETCONF-yang clear" is not a valid command syntax, and "clear NETCONF-session" is not the correct command format for clearing YANG-specific sessions. Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/168/b_168_programmability_cg/NETCONG_YANG.html

A Cisco Firewall is a system that controls and monitors incoming and outgoing network traffic based on configured security rules and policies. It acts as a barrier between trusted internal networks and untrusted external networks, filtering traffic based on predetermined security rules, port numbers, protocols, and IP addresses. Other firewall descriptions would be incorrect if they did not emphasize the traffic control and monitoring aspects based on security configurations.

Line #3 contains the error in the JSON parsing code. The issue is with the file opening syntax - the code should use "json_ios_xe_interfaces.json" as a string filename, but there may be a syntax error in how the file is being opened or the filename is specified. When parsing JSON data in Python, proper file handling and valid JSON structure are critical for successful decoding. The other lines show standard JSON loading operations that appear syntactically correct. Reference: https://fastreroute.com/interpret-json-encoded-data/