A network management application needs to trigger a device to perform a route table lookup and return the result. The YANG module for the device should model this operation so that the application can invoke it via NETCONF. Which YANG statement should the module use?

rpc route-lookup { input { ... } output { ... } }

notification route-lookup { ... }

A YANG module defines a container named 'system' with a leaf 'hostname'. A second module needs to add a new leaf 'location' under the 'system' container. The second module imports the first with the prefix 'base'. Which augment statement correctly adds the 'location' leaf?

augment "/base:system" { leaf location { type string; } }

augment "/system" { leaf location { type string; } }

augment "/base:system/base:location" { leaf location { type string; } }

augment "/base:system/base:hostname" { leaf location { type string; } }

A network automation team is designing a YANG module to manage a device's routing table. They need to support two operations: one to clear all routes and another to add a single route. The team wants to model these as distinct operations that a NETCONF client can invoke. The team also needs to ensure that the operations are discoverable by the client. Which approach correctly models these operations?

Define two containers: 'clear-routes' and 'add-route'.

Define two notifications: 'clear-routes' and 'add-route'.

Define two separate rpc statements: 'clear-routes' and 'add-route'.

Define a single rpc statement with an input leaf that specifies the operation.

Juniper NetworksCertified Specialist, Automation and DevOps (JNCIS-DevOps)

Domain 5Objective 1

Implementation Concepts JN0-423 Practice Questions (Page 4)

Part of the YANG domain, which makes up ~15% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–9 in this domain), expect 2–3 from this objective — we provide 22 practice questions to prepare you well beyond it. (estimate)

22questions here

5free pages

7concepts

Questions 16–20

16application · medium
A network management application needs to trigger a device to perform a route table lookup and return the result. The YANG module for the device should model this operation so that the application can invoke it via NETCONF. Which YANG statement should the module use?
Select an answer first
17expert · medium
A YANG module defines a container named 'system' with a leaf 'hostname'. A second module needs to add a new leaf 'location' under the 'system' container. The second module imports the first with the prefix 'base'. Which augment statement correctly adds the 'location' leaf?
Select an answer first
18foundation · easy
In YANG, which statement is used to define a remote procedure call (RPC) that can be invoked on a device?
Select an answer first
19expert · medium
A network automation team is designing a YANG module to manage a device's routing table. They need to support two operations: one to clear all routes and another to add a single route. The team wants to model these as distinct operations that a NETCONF client can invoke. The team also needs to ensure that the operations are discoverable by the client. Which approach correctly models these operations?
Select an answer first
20foundation · easy
Which YANG statement is used to restrict the allowed values of a string leaf to a specific regular expression?
Select an answer first

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Implementation Concepts JN0-423 Practice Questions (Page 4)

Questions 16–20

A network management application needs to trigger a device to perform a route table lookup and return the result. The YANG module for the device should model this operation so that the application can invoke it via NETCONF. Which YANG statement should the module use?

A YANG module defines a container named 'system' with a leaf 'hostname'. A second module needs to add a new leaf 'location' under the 'system' container. The second module imports the first with the prefix 'base'. Which augment statement correctly adds the 'location' leaf?

In YANG, which statement is used to define a remote procedure call (RPC) that can be invoked on a device?

Which YANG statement is used to restrict the allowed values of a string leaf to a specific regular expression?

Keep studying — YANG