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CISCO DevNet 200-901 Practice exam tests a candidate's knowledge of at the associate level in software development and design, understanding and using APIs, application deployment and security, and infrastructure and automation on Cisco platforms.The exam is focused on a total of 6 sections and they are as follows:Software Development and DesignUnderstanding and Using APIsCisco Platforms and DevelopmentApplication Deployment and SecurityInfrastructure and AutomationNetwork FundamentalsThe practice tests are constructed to enhance your confidence to sit for real exam as you will be testing your knowledge and skills for the above-mentioned topics. The practice tests are accurate and proven correct by test-takers yet it is highly important to use our practice tests as a resource not just the only resource.-Understanding and Using APIs-Construct a REST API request to accomplish a task given API documentation-Describe common usage patterns related to webhooks-Identify the constraints when consuming APIs-Explain common HTTP response codes associated with REST APIs-Troubleshoot a problem given the HTTP response code, request and API documentation-Identify the parts of an HTTP response (response code, headers, body)-Utilize common API authentication mechanisms: basic, custom token, and API keys-Compare common API styles (REST, RPC, synchronous, and asynchronous)- Construct a Python script that calls a REST API using the requests library-Cisco Platforms and Development-Construct a Python script that uses a Cisco SDK given SDK documentation-Describe the capabilities of Cisco network management platforms and APIs (Meraki, Cisco DNA Center, ACI, Cisco SD-WAN, and NSO)-Describe the capabilities of Cisco compute management platforms and APIs (UCS Manager, UCS Director, and Intersight)-Describe the capabilities of Cisco collaboration platforms and APIs (Webex Teams, Webex devices, Cisco Unified Communication Manager including AXL and UDS interfaces, and Finesse)-Describe the capabilities of Cisco security platforms and APIs (Firepower, Umbrella, AMP, ISE, and ThreatGrid)-Describe the device level APIs and dynamic interfaces for IOS XE and NX-OS-Identify the appropriate DevNet resource for a given scenario (Sandbox, Code Exchange, support, forums, Learning Labs, and API documentation)-Apply concepts of model driven programmability (YANG, RESTCONF, and NETCONF) in a Cisco environment-Construct code to perform a specific operation based on a set of requirements and given API reference documentation such as these:-Obtain a list of network devices by using Meraki, Cisco DNA Center, ACI, Cisco SD-WAN, or NSO-Manage spaces, participants, and messages in Webex Teams-Obtain a list of clients / hosts seen on a network using Meraki or Cisco DNA Center-Application Deployment and Security-Describe benefits of edge computing-Identify attributes of different application deployment models (private cloud, publiccloud, hybrid cloud, and edge)-Identify the attributes of these application deployment types-Virtual machines-Bare metal-Containers-Describe components for a CI/CD pipeline in application deployments-Construct a Python unit test-Interpret contents of a Dockerfile-Utilize Docker images in local developer environment-Identify application security issues related to secret protection, encryption (storage and transport), and data handling-Explain how firewall, DNS, load balancers, and reverse proxy in application deployment-Describe top OWASP threats (such as XSS, SQL injections, and CSRF)-Utilize Bash commands (file management, directory navigation, and environmental variables)-Identify the principles of DevOps practices-Infrastructure and Automation-Describe the value of model driven programmability for infrastructure automation-Compare controller-level to device-level management-Describe the use and roles of network simulation and test tools (such as VIRL and pyATS)-Describe the components and benefits of CI/CD pipeline in infrastructure automation-Describe principles of infrastructure as code-Describe the capabilities of automation tools such as Ansible, Puppet, Chef, and Cisco NSO-Identify the workflow being automated by a Python script that uses Cisco APIs including ACI, Meraki, Cisco DNA Center, or RESTCONF-Identify the workflow being automated by an Ansible playbook (management packages, user management related to services, basic service configuration, and start/stop)-Identify the workflow being automated by a bash script (such as file management, app install, user management, directory navigation)-Interpret the results of a RESTCONF or NETCONF query-Interpret basic YANG models-Interpret a unified diff-Describe the principles and benefits of a code review process-Interpret sequence diagram that includes API calls-Network Fundamentals-Describe the purpose and usage of MAC addresses and VLANs-Describe the purpose and usage of IP addresses, routes, subnet mask / prefix, and gateways-Describe the function of common networking components (such as switches, routers, firewalls, and load balancers)-Interpret a basic network topology diagram with elements such as switches, routers, firewalls, load balancers, and port values-Describe the function of management, data, and control planes in a network device-Describe the functionality of these IP Services: DHCP, DNS, NAT, SNMP, NTP-Recognize common protocol port values (such as, SSH, Telnet, HTTP, HTTPS, and NETCONF)-Identify cause of application connectivity issues (NAT problem, Transport Port blocked, proxy, and VPN)-Explain the impacts of network constraints on application

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