Application Deployment & Security: This topic is all about:

• Identification of application security problems associated with data handling, encryption (storage and transport), and secret protection
• Utilization of Bash commands (file management, environmental variables, and directory navigation)
• Description of the benefits of edge computing
• Description of constituents for a CI/CD pipeline in application implementations
• Identification of the features of various application deployment methods
• Construction of a Python unit test
• Description of top OWASP threats (CSRF, SQL-injections, and XSS)
• Interpretation of contents of a Dockerfile
• Identification of the principles of DevOps practices
• Utilization of Docker images in a local developer environment

Reference: https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/devasc-200-901.html?wcmmode=disabled

Cisco 200-901 Exam: Content in Detail

The Cisco 200-901 exam covers a wide range of knowledge areas. These domains and their weight are enumerated below:

• Fundamentals of networks – 15%

  This topic area involves the following abilities: explaining the role and utilization of VLANs and MAC addresses; explaining the role and utilization of subnet prefix/mask, routes, IP addresses, and gateways; explaining the role of general networking elements (including firewalls, switches, routers, load balancers); interpreting a basic network topology diagram with the components, such as firewalls, switches, load balancers, routers, and port values; explaining the role of data, management, and control planes in a network device; explaining the functionality of IP services, such as DNS, DHCP, SNMP, NAT, NTP; recognizing general protocol port values (including HTTP, SSH, HTTPS, Telnet, NETCONF); identifying cause of application connectivity problems (VPN, proxy, NAT problem, Transport Port blocked); explaining the influence of network restraints on application.

• Cisco platforms – 15%

  This domain combines the questions that check the candidates’ ability to write a Python script incorporating Cisco SDK given SDK documentation; explain the capacity of Cisco APIs and network management platforms (Cisco DNA, Center, ACI, Meraki, NSO, Cisco SD-WAN); explain the capacity of Cisco APIs and compute management platforms (Intersight, UCS Director, UCS Manager); explain the capacity of Cisco APIs and collaboration platforms (Cisco Unified Communication Manager, Webex devices, Webex Teams, Finesse); explain the capacity of Cisco APIs and security platforms (Umbrella, Firepower, ISE, AMP, ThreatGrid); explain the device level dynamic interfaces and APIs for IOS XE and NX-OS; define the proper DevNet resource for a particular scenario (Code Exchange, Sandbox, Learning Labs, support, forums, API documentation); apply the principles of model driven programmability (NETCONF, YANG, RESTCONF) within a Cisco environment; build code to execute a particular operation on the basis of API reference documentation.

• Understanding and use of APIs – 20%

  This topic encompasses the following skills: constructing the REST API request to accomplish a task given API documentation; describing common usage patterns related to webhooks; identifying the constraints when consuming APIs; explaining common HTTP response codes associated with REST APIs; troubleshooting a problem given the HTTP response code, request and API documentation; identifying the parts of an HTTP response (response code, headers, body); utilizing common API authentication mechanisms; comparing common API styles (REST, RPC, synchronous, and asynchronous); constructing a Python script that calls REST API using the requests library.

• Deployment of applications and their security – 15%

  This subject covers the following competencies: explaining the advantages of edge computing; defining the attributes of various application deployment models (hybrid Cloud, private Cloud, public Cloud, edge); defining the attributes of the above-mentioned application deployment types; explaining the elements for the CICD pipeline within application deployments; designing a Python unit test interpreting contents of Dockerfile; utilizing Docker images in a local developer environment; defining application security problems associated with encryption, secret protection, data handling; explaining OWASP threats (including SQL injections, XSS, CSRF); applying Bash commands (directory navigation, environmental variables, file management); defining the DevOps practices principles.

• Development of software – 15%

  This objective includes differentiating various data formats (YAML, XML, JSON); explaining parsing of general data format (YAML, XML, JSON) to Python data structures; describing the principles of test-driven development; differentiating methods of software development (waterfall, agile, lean); explaining the advantages of uniting code into functions, modules, and classes; defining the advantages of general design patterns (Observer and MVC); explaining the benefits of version control; utilizing general version control operations with Git.

• Infrastructure and automation concepts – 20%

  Within this area, the examinees need to demonstrate that they are capable of explaining the utilization and functions of the network test and simulation tools (including pyATS and VIRL); explaining the elements and advantages of the CICD pipeline in automating infrastructure; explaining infrastructure principles as code; explaining the automation tools capacity (Cisco NSO, Ansible, Chef, Puppet); defining the workflow that is automated with the help of a Python script with Cisco APIs, such as Cisco DNA Center, ACI, RESTCONF, or Meraki; defining the workflow that is automated with the help of an Ansible playbook (user management related to services, management packages, basic service configuration, start/stop); defining the workflow that is automated with the help of a bash script (including app install, directory navigation, file management, user management); interpreting the results of a RESTCONF or NETCONF query; interpreting general YANG models; explaining the principles and advantages of reviewing the code; interpreting the sequence diagram with API calls; interpreting a unified diff.

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