A gNMI client successfully connects to a Junos device and can perform Get requests on the /interfaces path. However, a Subscribe request to the same path returns an error indicating the subscription is not supported. The client is using JSON_IETF encoding. What is the most likely cause of this issue?

The Subscribe request is missing a required field, such as the subscription mode or sample interval

The client's login class has read permission for Get but not for Subscribe

The device is using an older Junos version that only supports Get and Set

The device does not support streaming telemetry for the /interfaces path

A developer is writing a gNMI client to retrieve the configuration of a specific BGP group on a Junos device. The client must use a path that is independent of the device's native YANG module structure to ensure portability across different vendors. Which approach should the client use?

Use the Junos native YANG path, such as /junos-configuration/protocols/bgp/group

Use the OpenConfig YANG path, such as /network-instances/network-instance/protocols/protocol/bgp/neighbors/neighbor

Use a path based on the SNMP MIB, such as /mib-2/bgp/group

Use a path based on the device's CLI hierarchy, such as /show/bgp/group

An organization is deploying gNMI telemetry across a large Junos fleet. Security policy requires that all telemetry traffic be encrypted and that the collector authenticate the device to prevent man-in-the-middle attacks. The organization uses a private CA. What must be configured on the Junos device to meet this requirement?

A self-signed certificate on the device

An SSH key pair for the gRPC service

A certificate signed by the private CA, installed on the device, and the gRPC service configured to use it

A plaintext gRPC channel with a shared secret

A gNMI client receives an authentication error when trying to connect. What is the most likely cause?

The gRPC service is not enabled.

The network path is unreachable.

The client is using an incorrect username or password.

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

Domain 2Objective 4

gRPC/gNMI for Junos Telemetry JN0-423 Practice Questions (Page 4)

Part of the gRPC domain, which makes up ~29% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~10–17 in this domain), expect 2–3 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)

30questions here

6free pages

8concepts

Questions 16–20

16application · medium
A developer is writing a gNMI client to retrieve the current status of all interfaces on a Junos device. The client must use a standard, vendor-neutral encoding that is widely supported by third-party tools. Which encoding should the client request in the gNMI GetRequest?
Select an answer first
17expert · hard
A gNMI client successfully connects to a Junos device and can perform Get requests on the /interfaces path. However, a Subscribe request to the same path returns an error indicating the subscription is not supported. The client is using JSON_IETF encoding. What is the most likely cause of this issue?
Select an answer first
18expert · hard
A developer is writing a gNMI client to retrieve the configuration of a specific BGP group on a Junos device. The client must use a path that is independent of the device's native YANG module structure to ensure portability across different vendors. Which approach should the client use?
Select an answer first
19expert · hard
An organization is deploying gNMI telemetry across a large Junos fleet. Security policy requires that all telemetry traffic be encrypted and that the collector authenticate the device to prevent man-in-the-middle attacks. The organization uses a private CA. What must be configured on the Junos device to meet this requirement?
Select an answer first
20foundation · easy
A gNMI client receives an authentication error when trying to connect. What is the most likely cause?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to JN0-423

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Juniper Networks. “JN0-423” is a trademark of its owner, used for identification only.

gRPC/gNMI for Junos Telemetry JN0-423 Practice Questions (Page 4)

Questions 16–20

A developer is writing a gNMI client to retrieve the current status of all interfaces on a Junos device. The client must use a standard, vendor-neutral encoding that is widely supported by third-party tools. Which encoding should the client request in the gNMI GetRequest?

A developer is writing a gNMI client to retrieve the configuration of a specific BGP group on a Junos device. The client must use a path that is independent of the device's native YANG module structure to ensure portability across different vendors. Which approach should the client use?

A gNMI client receives an authentication error when trying to connect. What is the most likely cause?

Keep studying — gRPC