Automation and DevOps - Specialist (JNCIS-DevOps) 온라인 연습
최종 업데이트 시간: 2026년05월15일
당신은 온라인 연습 문제를 통해 Juniper JN0-423 시험지식에 대해 자신이 어떻게 알고 있는지 파악한 후 시험 참가 신청 여부를 결정할 수 있다.
시험을 100% 합격하고 시험 준비 시간을 35% 절약하기를 바라며 JN0-423 덤프 (최신 실제 시험 문제)를 사용 선택하여 현재 최신 160개의 시험 문제와 답을 포함하십시오.
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Question No : 1
A network automation system needs to modify a Junos configuration path through a model-driven gNMI interface.
Which gNMI operation should be used?
정답: Explanation:
gNMI Set is used to update, replace, or delete configuration data. Get retrieves data, and Subscribe receives telemetry updates.
Question No : 2
An Ansible playbook renders Junos interface configuration from a Jinja2 template. Interface names are correct, but VLAN IDs are wrong for one site.
What should the engineer check first?
정답: Explanation:
Jinja2 templates render values from variables. If only one site has incorrect values, the likely issue is in that site's host_vars or group_vars.
Question No : 3
A Junos device should automatically collect diagnostic output when a routing adjacency goes down. The action should be triggered by the system event, not by a manual operator command or a configuration commit.
Which combination best fits this requirement?
정답: Explanation:
An event policy can match a system event and trigger an event script. This is appropriate for automated responses to operational events.
Question No : 4
A multi-vendor automation platform needs to collect BGP state from Junos and non-Junos devices using a consistent model-driven schema.
Which model family best supports this requirement?
정답: Explanation:
OpenConfig provides vendor-neutral YANG models for configuration and operational state, making it useful for multi-vendor automation.
Question No : 5
A Junos telemetry pipeline uses Telegraf to collect metrics and InfluxDB to store time-series data. Operations teams need dashboards to visualize the collected telemetry.
Which component provides the dashboard function in the TIG stack?
정답: Explanation:
In the TIG stack, Telegraf collects metrics, InfluxDB stores time-series data, and Grafana provides visualization dashboards.
Question No : 6
A YANG model contains the following simplified structure:
container interfaces {
list interface {
key "name";
leaf name {
type string;
}
}
}
What does the key "name" statement indicate?
정답: Explanation:
In a YANG list, the key statement identifies which leaf or leaves uniquely identify each entry in the list.
Question No : 7
An Ansible project stores Junos login credentials in variable files. The team wants these values encrypted in the repository but still available to playbooks during execution.
Which feature should be used?
정답: Explanation:
Ansible Vault encrypts sensitive variables such as passwords, tokens, and keys while allowing playbooks to access them after decryption.
Question No : 8
A Junos administrator wants to enforce a rule that every firewall filter must include a required logging term. If the term is missing, the configuration must be rejected before becoming active.
Which script type should be used?
정답: Explanation:
Commit scripts run during commit processing and can validate the candidate configuration. They can reject commits that do not meet required standards.
Question No : 9
An engineer uses gNMIc to retrieve the current value of a Junos interface counter one time. The engineer does not want continuous updates or a long-running telemetry stream.
Which gNMI operation should be used?
정답: Explanation:
gNMI Get retrieves current configuration or operational state values. Subscribe is used for continuous or streaming telemetry updates.
Question No : 10
A network automation team uses Terraform with a Juniper-related provider to manage network infrastructure resources. Before applying any changes, the team wants to see which resources Terraform will create, update, or delete.
Which command should be used?
정답: Explanation:
terraform plan previews the changes Terraform will make before applying them. This is useful in network automation workflows to review intended infrastructure changes safely.
Question No : 11
A YANG model contains an interface configuration node that stores a single IP address value.
Which YANG construct should this node most likely be?
정답: Explanation:
A leaf represents a single value in a YANG data tree, such as an IP address, string, integer, or boolean.
JN0-423 High-Fidelity Practice Questions - Refined Set 3
Question No : 12
A Junos administrator wants to enforce interface naming standards whenever an engineer commits a configuration change. Noncompliant configuration should be rejected before activation.
Which mechanism should be used?
정답: Explanation:
Commit scripts validate candidate configuration during commit processing and can reject configurations that violate standards.
Question No : 13
A Junos telemetry subscription should send interface counter updates every 30 seconds, even if the counter values have not changed.
Which gNMI subscription mode should be used?
정답: Explanation:
SAMPLE mode sends updates at a configured interval. ON_CHANGE sends updates only when values change.
Question No : 14
A developer chooses Protocol Buffers for a gRPC-based automation interface instead of plain text message formats.
Which characteristic explains this choice?
정답: Explanation:
Protocol Buffers provide compact serialization and strongly typed message definitions, which makes them suitable for gRPC APIs.
Question No : 15
An Ansible workflow deploys Junos configuration successfully. The team now wants an automated method to confirm that expected operational values exist after deployment.
Which addition best satisfies this requirement?
정답: Explanation:
JSNAPy tests validate Junos operational state and are useful for post-change verification after configuration deployment.
