[2022年05月30日] 最速合格には素晴らしいJN0-421無料テストPDF本日更新です [Q27-Q52]

[2022年05月30日] 最速合格には素晴らしいJN0-421無料テストPDF本日更新です

無料でゲット！最新の2022年最新の有効な練習JNCIS-DevOps JN0-421問題と解答でテストエンジン

質問 27
Which messaging protocol do JET service APIs use to interface with the Junos OS?

A. RabbitMQ
B. gRPC
C. MQTT
D. NETCONF

正解: C

質問 28
Click the Exhibit button.

The Ansible playbook shown in the exhibit is executed against a set of Junos network devices. Each Junos device is configured with a user account in the super-user login class. The user account uses SSH-key-based authentication with a passphrase of user 123.
What is the result of executing this playbook against the Junos network devices?

A. The playbook fails dut to a YAMI. Syntax error.
B. The playbook executes and prints"VARIABLE IS NOT DEFINED!" as the value of response. Facts.version.
C. The playbook executes and prints the version of Junos running on each network device as the value of response.facts.version.
D. The playbook executes, but fails with a "connectAuthError" due to the missing passphrase argument to the junos_get_facts module.

正解: D

質問 29
Click the Exhibit button.

You manger asks you to trouble shoot an Ansible problem when logging into a Junson device. You notice the Ansible pay in question has a vars_files argument that calls the variables.yml entery file. The contents of that file are displayed in the exhibit.
What is happening in this scenario?

A. The file is an SSH key
B. The file is encrypted with ansible-vault
C. The variables.yml files is not actually a YAMI.file.
D. The file is encrypted with ansible

正解: A

質問 30
Click the Exhibit button.

What will executing the program shown in the exhibit retrieve from a Junos device?

A. the previous configuration changes of the device
B. the current software version on the device
C. the current memory utilization
D. the FPC inventory of the device

正解: A

質問 31
A customer has a control machine with a default Ansible installation. During execution of an Ansible module against a Junos device, the Ansible control machine generates the

What is the cause for this error?

A. Ansible cannot connect to the device through NTETCONF
B. Ansible cannot authenticate to the device.
C. router1.example.com was not defined in /etc/ansible/inventory/hosts on the control machine.
D. router1.example.com was not defined in /etc/hosts on the control machine.

正解: C

質問 32
Which command is valid for assessing a Junos device using the RESTful API on the default port?
A)

B)

C)

D)

A. Option A
B. Option D
C. Option C
D. Option B

正解: A

質問 33
Click the Exhibit button.

Referring to the exhibit, what is the execution order of tasks in the Ansible plybook?

A. Task C > Task B > Task A
B. Task A > Task B > Task C
C. Task A > Task B >
D. Task C > Task B >

正解: A

質問 34
You are asked to write an application that interacts directly with the internal APIs belonging to rpd Which statement is true in this scenario?

A. You must write the application using the JET APIs
B. You must write the application using the YANG APIs
C. You must write the application using the REST APIs
D. You must write the application using the XML APIs

正解: A

質問 35
Using the REST ful API on Junos device, you are able to retrieve configuration information in which three formats? (choose three.)

A. JSON
B. GPB
C. plain text
D. YAML
E. XML

正解: A,D,E

質問 36
Your organization is creating a custom YANG module. You are asked to create a leaf node called timeout with a data type of duration.
In this scenario, what is the appropriate syntax for this leaf node?

A. Option D
B. Option C
C. Option A
D. Option B

正解: A

質問 37
Click the Exhibit button.

Referring to the exhibit, what are two results of the Python operational script? (Choose two.)

A. It commits the configuration
B. It deactivates a user-selected interface.
C. It disables a user-selected interface.
D. It does not commit the configuration

正解: B

質問 38
Which command is used to execute an Ansible playbook?

A. ansible-galaxy
B. ansible
C. ansible-playbook
D. ansible-vault

正解: C

質問 39
Click the Exhibit button.
Exhibit:

Your manager asks you to troubleshoot an Ansible problem when logging into a Junos device. You notice the Ansible play in question has a vars_files argument that calls the variables.yml entry file. The contents of that file are displayed in the exhibit.
What is happening in this scenario?

A. The file is an SSH key
B. The variables.yml file is not actually a YAML file
C. The file is encrypted with ansible-vault
D. The file is encrypted with ansible

正解: C

質問 40
What is the purpose of an __init__.py file?

A. An __init__.py file contains strings for additional directories that the Python interpreter adds to sys.path
[]
B. An __init__.py file initializes a Python application with default values for instantiated objects
C. An __init__.py file indicates to the Python interpreter that a directory contains Python packages or modules
D. __init__.py file sets all magic attributes with the __init__.prefix with the appropriate default values

正解: C

質問 41
Which two automation frameworks are agentless when managing Junos devices? (Choose two)

A. Chef
B. SaltStack
C. Ansible
D. Puppet

正解: B,C

質問 42
Which statement is true about a Junos ephemeral configuration database?

A. It can be used to reduce commit time
B. It can be used to archive previous versions of the ephemeral configuration
C. It can be used to trigger a commit script
D. It can be used to validate configuration data semantics

正解: A

解説:
Explanation
References:

質問 43
Click the Exhibit button.
Exhibit:

Referring to the exhibit, what is the execution order of tasks in the Ansible playbook?

A. Task C > Task B > Task A
B. Task A > Task B > Task C
C. Task A > Task B
D. Task C > Task B

正解: C

質問 44
What is a correctly formatted JSON string?
A)

B)

C)

D)

A. Option C
B. Option D
C. Option A
D. Option B

正解: A

質問 45
Drag and drop

In the Python commit script, which object provides the post-inheritance candidate configuration?

A. Checkout_Configuration
B. Junos_ Configuration
C. Canadidate_ Configuration
D. Commit-Script-Input

正解: A

質問 46
What are three types of Juniper on-box scripts? (Choose three)

A. Ansible
B. expect
C. event
D. commit
E. operational

正解: C,D,E

質問 47
You want to implement a function that is available in the Junos OS , but not defined in a standard model.
Which statement would you use with YANG to accomplish this task?

A. choice
B. augment
C. case
D. deviation

正解: A

質問 48
Which data serialization is used between RubyEZ and a Junos device?

A. automated CLI
B. OpenConfig
C. SNMP
D. XML

正解: D

質問 49
Which data serialization method does the Junos CLI use to communicate with the Junos management process (mgd) /

A. gRPC
B. YAML
C. JSON
D. XML

正解: D

質問 50
Which transport protocol must be supported by RFC-compliant NETCONF implementations?

A. Telnet
B. BEEP
C. SSH
D. TLS

正解: C

解説:
Explanation
The NETCONF protocol uses a simple remote procedure call (RPC) layer running over secure transports to facilitate communication between a client and a server. The Secure Shell (SSH) [6] is the mandatory secure transport that all NETCONF clients and servers are required to implement as a means of promoting interoperability.
References:

質問 51
Which command is valid for accessing a Junos device using the RESTful API on the default port?
A)

B)

C)

D)