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Juniper JN0-412 practice test (q1-q13)

QUESTION 1
What are two advantages of SDN? (Choose two.)
A. centralized management
B. decentralized management
C. programmability
D. static networking
Correct Answer: AC

QUESTION 2
Click the Exhibit button.

Referring to the exhibit, what must have occurred prior to JohnDoe sending the request?
A. JohnDoe must have obtained a valid token from Horizon.
B. JohnDoe must have successfully authenticated using OpenStack\\’s Web user interface.
C. JohnDoe must have obtained a valid token from Keystone.
D. JonnDoe must have obtained a valid token from the Contrail control node.
Correct Answer: A

QUESTION 3
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 4
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-nodecc.html

QUESTION 5
Which command displays routes in vRouter VRF?
A. rt
B. show route
C. show route table vrf-name
D. route print
Correct Answer: A
Reference: https://www.juniper.net/documentation/en_US/contrail2.21/topics/task/configuration/vrouter-cliutilitiesvnc.html

QUESTION 6
Which type of query is generated by the curl http://:8081/analytics/uves/vrouters command?
A. SSL
B. REST
C. SQL
D. XML
Correct Answer: B

QUESTION 7
Which two nodes are part of the Contrail controller role? (Choose two.)
A. config
B. control
C. analytics
D. load balancer
Correct Answer: AB
Reference: https://www.juniper.net/documentation/en_US/nfv2.1/topics/concept/ccpearchitecture.html#:~:text=Contrail%
20controller%20node%2C%20which%20hosts,virtualized%20network %20functions%20(VNFs).
http://juniper.github.io/contrail-vnc/architecture.html

QUESTION 8
What are three ways to deploy an MX Series device as an SDN gateway? (Choose three.)
A. Configure it as an L4 gateway.
B. Configure it as an application gateway.
C. Configure it as an SDN-to-SDN gateway.
D. Configure it as an L3 gateway.
E. Configure it as an L2 gateway.
Correct Answer: CDE

QUESTION 9
What are three examples of hypervisors? (Choose three.)
A. VMware ESXi
B. Juniper vSRX
C. KVM
D. OpenStack Nova
E. Microsoft Hyper-V
Correct Answer: ACE

QUESTION 10
Which statements correct about Contrail security?
A. Contrail security is used to control access into Junos devices.
B. Contrail security is used to apply security features and segment traffic flows.
C. Contrail security is used to analyze network performance and learn traffic patterns.
D. Contrail security is used to control management access to VNFs.
Correct Answer: B

QUESTION 11
Which two OpenStack components are optional services? (Choose two.)
A. Nova
B. Heat
C. Glance
D. Magnum
Correct Answer: CD

QUESTION 12
You decide to create only host routes for each of your virtual networks in a project. Each virtual network is sent its
correct host prefix. When troubleshooting inter-VN connectivity, using the ping command, the response times out
between two virtual networks even though your policies allow for it.
What is the problem in this scenario?
A. The VMs do not have interfaces.
B. Using host routes prevents the default route from being sent.
C. Your VMs have incorrect DNS settings.
D. The IPAM settings are incorrect.
Correct Answer: C

QUESTION 13
Which two statements about a Contrail environment are true? (Choose two.)
A. Control nodes peer with other control nodes using XMPP.
B. Control nodes peer with other control nodes using MP-BGP.
C. Control nodes peer with compute nodes using XMPP.
D. Control nodes peer with compute nodes using MP-BGP.
Correct Answer: BC
The control nodes peer with the remote compute nodes by means of XMPP and peer with local gateways by means of
MP-eBGP. Reference: https://www.juniper.net/documentation/en_US/contrail20/information-products/pathwaypages/contrailservice-provider-feature-guide.pdf

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