Juniper JNCIS-Cloud JN0-412 Questions & Answers

• Question 31:

  Which ETSI NFV function is responsible for the management of virtual network functions (VNF) and element management systems (EMS)?

  A. Virtual Network Function Manager (VNFM)

  B. OpenStack

  C. Contrail Command

  D. Analytics Database

  Correct Answer: A

• Question 32:

  Your development team asks you to provision twenty exact copies of a three-tier application containing three VMs. Each copy of the application must be on their own isolated network. The development team also wants to deploy more copies in the future from a self-service portal.

  What will accomplish this task?

  A. Create a Heat orchestration template for the application and then launch twenty stacks using the Horizon dashboard or OpenStack CLI.

  B. Use the Contrail fabric manager to define and launch all twenty stacks using an intent-driven automation feature.

  C. Create all twenty networks and launch each instance using the Horizon instance creation wizard.

  D. Create a Heat orchestration template for the application and then launch twenty stacks using the AppFormix user interface.

  Correct Answer: A

• Question 33:

  What are two supported methods to add a new Contrail compute node using Contrail Command? (Choose two.)

  A. From the Web UI, add a new server and assign it as a compute node to the existing cluster.

  B. From the CLI on the Contrail Command server, edit the instances.yml file and add the new node information.

  C. From the CLI on the Contrail Command server, edit the command_servers.yml file and add the new node information.

  D. From the CLI on the Contrail Command server, edit the testbed.py file and add the new node information.

  Correct Answer: AB

  Reference: https://www.juniper.net/documentation/en_US/contrail19/topics/task/configuration/adding-newcompute-node-cc.html

• Question 34:

  Which two statements are true about User Visible Entities (UVEs)? (Choose two.)

  A. UVES are limited to a single component.

  B. UVEs can span multiple components.

  C. UVEs may not require aggregation before being presented.

  D. UVEs may require aggregation before being presented.

  Correct Answer: BD

  Reference: https://www.juniper.net/documentation/en_US/contrail19/topics/task/configuration/analyticsapis-vnc.html

• Question 35:

  Two virtual machines that belong to the same virtual network are not able to communicate with each other. Which statement is true in this scenario?

  A. A floating IP address is assigned to the virtual machine.

  B. Images used to spawn the two virtual machines have different flavors.

  C. A security group is blocking the communication.

  D. The two virtual machines are in different availability zones.

  Correct Answer: C

• Question 36:

  What are three functions of an SDN controller? (Choose three.)

  A. An SDN controller uses federated routes between BGP autonomous systems.

  B. An SDN controller uses northbound APIs to manage applications and business logic.

  C. An SDN controller uses southbound APIs to manage flow control to the switches and routes in the network.

  D. An SDN controller uses federated data between SDN controller domains.

  E. An SDN controller functions as a gateway for the virtual machines in the SDN.

  Correct Answer: ABC

• Question 37:

  When creating a firewall rule in Contrail Security, which two types of endpoints are available? (Choose two.)

  A. virtual network

  B. tag

  C. domain

  D. service level

  Correct Answer: AB

  Reference: https://www.juniper.net/documentation/en_US/contrail20/information-products/pathway-pages/ contrail-networking-security-user-guide.pdf

• Question 38:

  Which role does OpenStack serve in SDN?

  A. vRouter

  B. controller

  C. gateway

  D. orchestrator

  Correct Answer: D

• Question 39:

  A snapshot of a VM1 instance was just taken. The snapshot is named VM2. You must launch a new VM instance called VM2 using the newly created snapshot.

  Which step must be taken to launch the instance?

  A. Create and launch the VM2 instance using the snapshot found under Project > Compute > Images.

  B. Launch the VM2 instance found under Project > Compute > Instances.

  C. Create and launch the VM2 instance using the snapshot found under Other > Snapshots.

  D. Launch the VM2 instance found under the drop-down menu for the VM1 instance.

  Correct Answer: C

• Question 40:

  Which network type is created in Neutron and mapped to physical networks?

  A. transient

  B. tenant

  C. provider

  D. management

  Correct Answer: C