Restconf practice questions

Drag each automation or API concept from the left to its corresponding description on the right. Not all descriptions are used.

Concepts: - Northbound API - Southbound API - JSON - HTTPS

A
Application-facing interface to the controller
Matches Northbound API: provides a programmatic interface for applications to interact with the SDN controller.
B
Controller-facing interface toward managed infrastructure
Matches Southbound API: allows the controller to push policies to network devices like switches and routers.
C
Structured data format
Matches JSON: a data‑interchange format that uses human‑readable text to store and transmit data objects.
D
Secure transport for API communication
Matches HTTPS: HTTP over TLS provides encryption and authentication for REST API calls.

Question 2mediumdrag order

Drag and drop the following steps into the correct order to set up gRPC streaming telemetry subscription on a Cisco IOS-XE device.

A
Enter global configuration mode, create a telemetry subscription, configure the receiver, define the sensor path, associate the sensor group with the subscription.
This is the correct order: start in global config, create the subscription, set the receiver, define the sensor path, then link the sensor group to the subscription.
B
Enter global configuration mode, define the sensor path, create a telemetry subscription, configure the receiver, associate the sensor group with the subscription.
This is incorrect because the sensor path must be defined after the subscription is created and the receiver is configured, not before.
C
Enter global configuration mode, configure the receiver, create a telemetry subscription, define the sensor path, associate the sensor group with the subscription.
This is incorrect because the subscription must be created before configuring the receiver; the receiver is part of the subscription configuration.
D
Enter global configuration mode, create a telemetry subscription, define the sensor path, configure the receiver, associate the sensor group with the subscription.
This is incorrect because the receiver must be configured before defining the sensor path; the sensor path references the receiver.

Question 3mediummatching

Match each automation-related data term to the most accurate description.

Trap 1: Puppet

Puppet uses a master-agent model where agents run on managed nodes and pull configurations from a master server, requiring agent installation.

Trap 2: Chef

Chef uses a master-agent model with agents (chef-client) installed on nodes, and configurations are defined in recipes and cookbooks.

Trap 3: SaltStack

SaltStack can operate in both agentless (via SSH) and agent-based modes, but its primary model uses a master-minion architecture with agents.

A
Ansible
Ansible is an agentless automation tool that uses SSH to manage devices, making it simple to deploy without requiring additional software on managed nodes.
B
Puppet
Why wrong: Puppet uses a master-agent model where agents run on managed nodes and pull configurations from a master server, requiring agent installation.
C
Chef
Why wrong: Chef uses a master-agent model with agents (chef-client) installed on nodes, and configurations are defined in recipes and cookbooks.
D
SaltStack
Why wrong: SaltStack can operate in both agentless (via SSH) and agent-based modes, but its primary model uses a master-minion architecture with agents.

Question 4easymultiple choice

Which HTTP method is commonly used to retrieve information from a REST API without modifying the resource?

Trap 1: POST

POST is commonly used to create or submit data.

Trap 2: PUT

PUT is used to replace or update a resource.

Trap 3: DELETE

DELETE removes a resource.

A
POST
Why wrong: POST is commonly used to create or submit data.
B
GET
Correct. GET retrieves data.
C
PUT
Why wrong: PUT is used to replace or update a resource.
D
DELETE
Why wrong: DELETE removes a resource.

Question 5mediummultiple choice

An automation script needs to send a bearer token when calling a controller REST API over HTTPS. Where is that token most commonly included?

Trap 1: In the Ethernet trailer

Tokens are an application-layer concept, not a Layer 2 trailer field.

Trap 2: In the DNS response section

DNS is unrelated to REST API authorization.

Trap 3: In the TCP checksum field

Transport checksums do not carry application tokens.

A
In the HTTP Authorization header
That is the standard way bearer tokens are presented.
B
In the Ethernet trailer
Why wrong: Tokens are an application-layer concept, not a Layer 2 trailer field.
C
In the DNS response section
Why wrong: DNS is unrelated to REST API authorization.
D
In the TCP checksum field
Why wrong: Transport checksums do not carry application tokens.

Question 6mediumdrag order

Drag and drop the following steps into the correct order to retrieve network device information using a REST API call that requires authentication and returns JSON data.

Question 7mediumdrag order

Drag and drop the following steps into the correct order to retrieve the operational status of interface GigabitEthernet0/0 using NETCONF and the ietf-interfaces YANG model.

Question 8mediummatching

Drag and drop the items on the left to the correct descriptions on the right.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts

Matches

Tool employing a pull mechanism for node configuration using a proprietary DSL

Framework that uses Ruby-coded recipes within a client-server deployment model

Solution providing agentless orchestration via SSH and YAML-written playbooks

High-level programming language utilized for scripting network automation tasks

Web-based interface for programmatic device management using HTTP methods

Question 9mediummulti select

Which two statements correctly describe a RESTful API used by network controllers? Choose two.

Trap 1: It requires SNMP traps for every successful request

REST does not depend on SNMP.

Trap 2: It can only return XML, never JSON

JSON is extremely common with REST APIs.

A
It commonly uses HTTP methods such as GET and POST
That is a core part of REST-style APIs.
B
It requires SNMP traps for every successful request
Why wrong: REST does not depend on SNMP.
C
It is typically stateless between client requests
Each request stands on its own in a stateless API design.
D
It can only return XML, never JSON
Why wrong: JSON is extremely common with REST APIs.

Question 10mediumdrag order

Drag and drop the following steps into the correct order to retrieve a specific interface's configuration via RESTCONF and apply a change to the interface description.

A
Send GET request to retrieve interface configuration, parse JSON/XML response, modify the description field, send PUT request with updated configuration, send GET request to verify the change.
This sequence follows the correct RESTCONF workflow: first retrieve the current configuration using GET, then parse the response, modify the desired field (description), apply the change using PUT, and finally verify with another GET.
B
Send PUT request to apply the change, send GET request to retrieve interface configuration, parse JSON/XML response, modify the description field, send GET request to verify the change.
This is incorrect because you cannot modify a configuration before retrieving it. The PUT request should be sent after retrieving and modifying the configuration, not before.
C
Send GET request to retrieve interface configuration, modify the description field, send GET request to verify the change, send PUT request with updated configuration.
This is incorrect because the PUT request to apply the change must occur before verification. Verifying before applying the change would show the old configuration.
D
Send PUT request with updated configuration, send GET request to retrieve interface configuration, parse JSON/XML response, modify the description field, send GET request to verify the change.
This is incorrect because the PUT request is sent before retrieving the current configuration, which would overwrite the existing configuration without knowing its current state. Also, modifying after applying is illogical.