350-901 practice questions 111–120

1. Question 111 · 385 in bank

   A heterogeneous network of vendors and device types needs automating for better efficiency and to enable future automated testing. The network consists of switches, routers, firewalls, and load balancers from different vendors; however, they all support the NETCONF/RESTCONF configuration standards and the YANG models with every feature the business requires. The business is looking for a buy versus build solution because they cannot dedicate engineering resources, and they need configuration diff and rollback functionality from day 1. Which configuration management or automation tooling is needed for this solution?

   • APyATS
   • BAppDynamics
   • CNSO
   • DPuppet

   Show answer

   Answer: C

   Explanation

   duplicate, but here it states YANG model, while in the other it told "YAML model", which lead to misinterpretation. Maybe the other question is worded incorrectly ?

   Source: Adapted from community discussion — [Removed]

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2. Question 112 · 385 in bank

   

   Refer to the exhibit. Which RESTCONF verb changes the GigabitEthernet2 interface from 192.168.100.1/24 to 10.10.10.1/24?

   • APOST
   • BPATCH
   • CGET
   • DHEAD

   Show answer

   Answer: B

   Explanation

   HTTPs Methods The https-based protocol-RESTCONF (RFC 8040), which is a stateless protocol, uses secure HTTP methods to provide CREATE, READ, UPDATE and DELETE (CRUD) operations on a conceptual datastore containing YANG-defined data, which is compatible with a server that implements NETCONF datastores. The following table shows how the RESTCONF operations relate to NETCONF protocol operations: OPTIONS SUPPORTED METHODS GET Read PATCH Update PUT Create or Replace POST Create or Operations (reload, default) DELETE Deletes the targeted resource HEAD Header metadata (no response body) https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/166/b_166_programmability_cg/restconf_prog_int.pdf

   Source: Adapted from community discussion — jjkcoins

   References

   • Cisco documentation
   • Cisco documentation

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3. Question 113 · 385 in bank

   DRAG DROP -

   

   Refer to the exhibit above and click on the resource tabs in the top left corner to view resources to help with this question. Drag and drop the code snippets from the left onto the item numbers on the right that match the missing sections in the exhibit to complete the cURL script that will use RESTCONF to update an interface on a Cisco IOS XE device. Select and Place:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   I would go with: 1. ietf:interfaces:interfaces 2. interface 3. Basic.. 4. application/yang-data+json 5. name 6. type 7. ietf:ipv4 8. ip 9.netmask

   Source: Adapted from community discussion — moslig

   References

   • cisco.com documentation

   

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4. Question 114 · 385 in bank

   

   Refer to the exhibit. An engineer needs to change the IP address via RESTCONF on interface GigabitEthemet2. An error message is received when the script is run. Which amendment to the code will result in a successful RESTCONF action?

   • AChange POST to PATCH
   • BIssue a DELETE before POST
   • CIssue a DELETE before PATCH
   • DChange POST to GET

   Show answer

   Answer: A

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5. Question 115 · 385 in bank

   DRAG DROP - A network engineer needs to retrieve interface data using the Cisco IOS XE YANG Model. Drag and drop the components from the bottom onto the box where the code is missing to complete the RESTCONF URI. Not all options are used. Select and Place:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/166/b_166_programmability_cg/restconf_prog_int.html

   References

   • Cisco documentation

   

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6. Question 116 · 385 in bank

   A developer plans to create a new bugfix branch to fix a bug that was found on the release branch. Which command completes the task?

   • Agit checkout -t RELEASE BUGFIX
   • Bgit checkout -b RELEASE BUGFIX
   • Cgit checkout -t BUGFIX RELEASE
   • Dgit checkout -b BUGFIX RELEASE

   Show answer

   Answer: D

   Explanation

   You are correct that from syntax perspective, it is irrelevant. But per naming convention, you should be able to easily identify what the branch is about.

   Source: Adapted from community discussion — eairl

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7. Question 117 · 385 in bank

   An automated solution is needed to configure VMs in numerous cloud provider environments to connect the environments to an SDWAN. The SDWAN edge VM is provided as an image, in each of the relevant clouds it is given an identity and all required configuration via cloud-init without needing to log into the VM once online. Which configuration management automation tool is needed for this solution?

   • ATerraform
   • BHyperFlex
   • CIntersight
   • DAnsible

   Show answer

   Answer: A

   Explanation

   "Terraform is the correct answer: When you create a generic compute resource in Terraform, your virtual machine (VM) may not have much capability because it is a ""fresh"" install and needs to be provisioned with the software you want to use. Manually installing the necessary software and its respective dependencies on each VM is time-consuming and difficult to maintain at scale. cloud-init is a standard configuration support tool available on most Linux distributions and all major cloud providers. cloud-init allows you to pass a shell script to your instance that installs or configures the machine to your specifications. https://learn.hashicorp.com/tutorials/terraform/cloud-init"

   Source: Adapted from community discussion — designated

   References

   • hashicorp.com documentation

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8. Question 118 · 385 in bank

   A developer is deploying an application to automate the configuration and management of Cisco network switches and routers. The application must use REST API interface to achieve programmability. The security team mandates that the network must be protected against DDoS attacks. What mitigates the attack without impacting genuine requests?

   • AIP address filtering at the application layer
   • Btraffic routing on the network perimeter
   • CAPI rate limiting at the application layer
   • Dfirewall on the network perimeter

   Show answer

   Answer: C

   Explanation

   I think the answer is C. In the official Study Guide p. 18: - Proactively prevent resource overload with rate-limiting mechanisms, which put a cap on how often someone can repeat an action within a certain timeframe. This can be applied to many processes: ... Network traffic: Protect servers and network devices from overload during a distributed denial-of-service (DDoS) attack.

   Source: Adapted from community discussion — udo2020

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9. Question 119 · 385 in bank

   Select 2

   A developer releases a new application for network automaton of Cisco devices deployed in a local data center. The application utilizes complex design patterns such as microservices that host multiple third-party libraries and programming languages. The development must be simplified by implementing an observability- driven development lifecycle. Which two considerations must be taken to meet the requirements? (Choose two.)

   • Awhich monitoring tools to use
   • Bidentifying customer priorities
   • Crelevant metrics to expose
   • Ddescription of low-level errors
   • Ewhich KPIs to monitor

   Show answer

   Answer: CE

   Explanation

   truth be told, this is an extremely subjective question and pretty much any 2 are correct. To me, however, C and E are the ones that make more sense.

   Source: Adapted from community discussion — __al__

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10. Question 120 · 385 in bank

    Which data encoding format uses gRPC by default for serializing structured sets of information?

    • AXML
    • BJSON
    • CYAML
    • DProtobuf

    Show answer

    Answer: D

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Keyboard:J Kmove between questionsA–Dselect an answerRshow or hide the answer← →change page

350-901 practice, question 111. 385 questions available.