200-901 practice questions 331–340

1. Question 331 · 530 in bank

   Select 2

   Several teams at a company are developing a new CRM solution to track customer interactions with a goal of improving customer satisfaction and driving higher revenue. The proposed solution contains these components: * MySQL database that stores data about customers * HTML5 and JavaScript UI that runs on Apache * REST API written in Python What are two advantages of applying the MVC design pattern to the development of the solution? (Choose two.)

   • Ato enable multiple views of the same data to be presented to different groups of users
   • Bto provide separation between the view and the model by ensuring that all logic is separated out into the controller
   • Cto ensure data consistency, which requires that changes to the view are also made to the model
   • Dto ensure that only one instance of the data model can be created
   • Eto provide only a single view of the data to ensure consistency

   Show answer

   Answer: AB

   Explanation

   AB. CREATIONAL PATTERN This design pattern allows the programmer to create instances of objects in a more flexible way and in this way manage what type of objects should be created for each case. C isnt correct

   Source: Adapted from community discussion — aplicacion101

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2. Question 332 · 530 in bank

   

   Refer to the exhibit. A developer is trying to collect data over RESTCONF API and prepares the request. The developer wants to get data in JSON format and with the IOS-XE-native model, but the request fails. Which HTTP part causes the failure?

   • Aapplication value
   • Binvalid URL
   • Cmissing URI header path
   • Dincorrect request type

   Show answer

   Answer: B

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3. Question 333 · 530 in bank

   A development team is using a version control system that has a centralized workflow. Which feature of the version control system ensures the integrity of the central repository?

   • Acentral common code versioning backup
   • Bbuilt-in conflict resolution mechanism
   • Cdistributed nature of the version control system architecture
   • Dtracked code changes of the developers

   Show answer

   Answer: B

   Explanation

   As a client-server model, a centralized workflow enables file locking so that any piece of the code that's currently checked out will not be accessible to others, ensuring that only one developer can contribute to the code at a time. Team members use branches to contribute to the central repository, and the server will unlock files after merges. https://about.gitlab.com/topics/version-control/what-is-centralized-version-control-system/

   Source: Adapted from community discussion — herrmann69

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4. Question 334 · 530 in bank

   Select 2

   Which two factors reduce the experience of an application? (Choose two.)

   • Asource location
   • Btraffic class
   • Cpacket loss
   • Dnetwork latency
   • Eusage

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   Answer: CD

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5. Question 335 · 530 in bank

   

   Refer to the exhibit. A developer has created an XML-based configuration model for a Cisco switch that is going to configure the device using NETCONF. From which configuration is the Interface Ethernet 0/0 deleted when this script is executed?

   • Acandidate
   • Bstartup
   • Ccurrent
   • Dbase

   Show answer

   Answer: C

   Explanation

   I agree with 'C' per https://www.rfc-editor.org/rfc/rfc4741 but the phrasing is not clear. "Only the configuration datastore is present in the base model. Additional configuration datastores may be defined by capabilities."

   Source: Adapted from community discussion — Woonesuf

   References

   • RFC Editor

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6. Question 336 · 530 in bank

   Which CI/CD component allows for the storing of code packages and enables the testing of the same code that is running on the live system?

   • AArtifactory
   • BJira
   • CITSM
   • DGit

   Show answer

   Answer: A

   Explanation

   "Git is used for source code and Artifactory is used for the binaries which go with the source code." Source: https://foxutech.medium.com/what-is-jfrog-artifactory-its-component-and-features-d0dbe85482ff

   Source: Adapted from community discussion — Woonesuf

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7. Question 337 · 530 in bank

   A development team needs to containerize an application named 'custapp4o3p2r6d3s6w7x6t9'. A Dockerfile has been created and now the docker build command must be run using the current folder to find the Dockerfile, build the image and create a local repository named 'custapp4d5c-repo' that points to that image. Which command must be used?

   • Adocker build custapp4d5c-repo Dockerfile .
   • Bdocker build -t acustapp4d5c-repo Dockerfile.txt
   • Cdocker build custapp4d5c-repo -f Dockerfile.txt
   • Ddocker build -t custapp4d5c-repo -f Dockerfile .

   Show answer

   Answer: D

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8. Question 338 · 530 in bank

   A web app must be accessible from computers and mobile devices. It must maintain the same data structure on both types of devices. What is the advantage of using the MVC design pattern for this app?

   • Ato asynchronously update the graphical interface
   • Bto define different algorithms for data manipulation
   • Cto separate the logic of the graphic interface of the different devices
   • Dto have only one instance of the objects that contain the data

   Show answer

   Answer: C

   Explanation

   C. to separate the logic of the graphic interface of the different devices The MVC (Model-View-Controller) design pattern is a software architecture pattern commonly used in web development to separate an application into three interconnected components: Model, View, and Controller. In this case, using the MVC design pattern can help in separating the logic of the graphic interface of the different devices, as the View component can be customized for the different devices while maintaining the same underlying data structure in the Model component. This can make it easier to maintain and update the application, as changes to the interface of one device will not affect the data or interface of the other devices.

   Source: Adapted from community discussion — Paola0699

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9. Question 339 · 530 in bank

   DRAG DROP - Drag and drop the first four stages of a DevOps toolchain from the left into the order on the right to create a new complex product. Not all options are used.

   

   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

   My take on this, I don't know if it's the right solution but maybe it can help. The "Set necessary properties, files, and dependencies" as a stage just doesn't sit right with me and https://www.atlassian.com/devops/devops-tools/choose-devops-tools there you have the DevOps Infinite Loop: - Plan - Build - Test - Deploy - Operate - Observe - Continuous Feedback - Discover - Plan so I tried to map this loop to the options we have: - Stage1: Plan ---- Gather requirements and assign development tasks. - Stage2: Build+Test ---- Design, build, and test application code. - Stage3: Deploy ---- Combine code with infrastructure requirements. - Stage4: Operate+Observe+Continuous Feedback+Discover ---- Review uptime and performance. - Set necessary properties, files, and dependencies. - Perform acceptance and integration testing and security scans.

   Source: Adapted from community discussion — jago83

   

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10. Question 340 · 530 in bank

    What is the purpose of a router in a network?

    • Ato provide wireless connectivity to a LAN
    • Bto filter harmful incoming traffic on a network
    • Cto connect multiple networks
    • Dto implement network high availability

    Show answer

    Answer: C

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