A YANG module defines a container 'system' that contains a leaf 'hostname' and a list 'dns-server' with a leaf 'address'. Which statement correctly describes the hierarchical data tree?

The 'address' leaf is a child of the 'system' container.

The 'system' container is a child of the 'dns-server' list.

The 'hostname' leaf is a child of the 'dns-server' list.

The 'dns-server' list is a child of the 'system' container, and the 'address' leaf is a child of the 'dns-server' list.

In a YANG data tree, what is the relationship between a container and its child leaves?

They are unrelated and exist independently.

The leaves are the parent nodes, and the container is a child node.

The container is the parent node, and the leaves are its child nodes.

They are siblings at the same level in the tree.

How does YANG contribute to vendor neutrality in network management?

By encrypting all configuration data to prevent vendor-specific modifications.

By using proprietary data formats that only certified vendors can access.

By providing a standard, open data modeling language that multiple vendors can implement.

By requiring all vendors to use the same hardware.

What is the purpose of a namespace in a YANG module?

To uniquely identify the module and prevent naming conflicts between different modules.

To define the physical location of the network device.

To determine the access control level for the module.

To specify the encryption algorithm used for data transmission.

A network team wants to automate the rollout of a new QoS policy across 500 routers. The team needs to ensure that the configuration is valid before it is applied to any device, and that the same policy can be reused across different hardware platforms. Which approach best meets these requirements?

Write a script that generates CLI commands and runs them on each device, checking the output for errors.

Use a YANG model to define the QoS policy and push it via NETCONF, which validates the data against the model before applying.

Use SNMP to set the QoS policy MIB objects on each device.

Use a configuration template that is manually reviewed and then applied via TFTP.

CiscoCertified Network Professional Enterprise

Domain 6Objective 3

6.3 Describe the High-Level Principles and Benefits of a Data Modeling Language, Such as YANG 350-401 Practice Questions (Page 6)

Part of the 6.0 Automation and Artificial Intelligence domain, which accounts for 15% of the 350-401 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~8–12 in this domain), expect 1–2 from this objective — we provide 38 practice questions to prepare you well beyond it. (estimate)

38questions here

8free pages

8concepts

15%of the exam

Questions 26–30

26application · medium
A YANG module defines a container 'system' that contains a leaf 'hostname' and a list 'dns-server' with a leaf 'address'. Which statement correctly describes the hierarchical data tree?
Select an answer first
27foundation · easy
In a YANG data tree, what is the relationship between a container and its child leaves?
Select an answer first
28foundation · easy
How does YANG contribute to vendor neutrality in network management?
Select an answer first
29foundation · easy
What is the purpose of a namespace in a YANG module?
Select an answer first
30application · medium
A network team wants to automate the rollout of a new QoS policy across 500 routers. The team needs to ensure that the configuration is valid before it is applied to any device, and that the same policy can be reused across different hardware platforms. Which approach best meets these requirements?
Select an answer first

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