In a .proto file, how is an enum type defined?

type Status { UNKNOWN = 0; ACTIVE = 1; }

enum Status { 0 = UNKNOWN; 1 = ACTIVE; }

enum Status { UNKNOWN, ACTIVE }

enum Status { UNKNOWN = 0; ACTIVE = 1; }

A gRPC service receives telemetry messages from Junos devices. The .proto file defines a message with a 'repeated' field 'samples'. A new version of the .proto file changes 'samples' from repeated to singular. Existing clients still send multiple samples. What will happen when the new server parses the message?

The server will throw a parse error.

The server will only keep the last sample and discard the rest.

The server will ignore all samples.

The server will concatenate all samples into a single value.

A Junos device agent uses generated Python code to send telemetry. The agent creates a message, sets fields, and calls a method to convert it to bytes for transmission over gRPC. On the collector side, the same message type is parsed from the received bytes. Which pair of generated methods performs these operations?

SerializeToString() on the agent and ParseFromString() on the collector

Encode() on the agent and Decode() on the collector

ToString() on the agent and FromString() on the collector

SerializeToBytes() on the agent and ParseFromBytes() on the collector

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

Domain 2Objective 1

Proto Buff JN0-423 Practice Questions (Page 3)

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 24 practice questions to prepare you well beyond it. (estimate)

24questions here

5free pages

8concepts

Questions 11–15

11foundation · easy
In a .proto file, how is an enum type defined?
Select an answer first
12foundation · easy
What is the default value for a 'bool' field in Protocol Buffers when it is not explicitly set?
Select an answer first
13expert · hard
A gRPC service receives telemetry messages from Junos devices. The .proto file defines a message with a 'repeated' field 'samples'. A new version of the .proto file changes 'samples' from repeated to singular. Existing clients still send multiple samples. What will happen when the new server parses the message?
Select an answer first
14application · easy
A Junos device agent uses generated Python code to send telemetry. The agent creates a message, sets fields, and calls a method to convert it to bytes for transmission over gRPC. On the collector side, the same message type is parsed from the received bytes. Which pair of generated methods performs these operations?
Select an answer first
15application · easy
You are designing a .proto file for a gRPC service that manages firewall filters. Each filter has a name and a list of terms. Each term has a name and a list of actions. You need to model the 'terms' field in the 'Filter' message. Which field definition is correct?
Select an answer first

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Proto Buff JN0-423 Practice Questions (Page 3)

Questions 11–15

In a .proto file, how is an enum type defined?

What is the default value for a 'bool' field in Protocol Buffers when it is not explicitly set?

You are designing a .proto file for a gRPC service that manages firewall filters. Each filter has a name and a list of terms. Each term has a name and a list of actions. You need to model the 'terms' field in the 'Filter' message. Which field definition is correct?

Keep studying — gRPC