gRPC Protocol JN0-423 Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A network engineer is developing a custom gRPC service on a Junos device to expose a new management API. The service needs to handle a large number of concurrent requests from multiple clients. The engineer is concerned about the performance of the service. What is a key factor that will impact the performance of the gRPC service?

   • AThe number of gRPC channels the server creates for each client.
   • BThe choice of programming language for the client.
   • CThe use of HTTP/2 multiplexing to handle multiple requests over a single connection.
   • DThe use of JSON for serialization, which is faster than Protocol Buffers.
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   A company is migrating its Junos device management API from REST to gRPC. The current REST API is used by external partners who are not technical and rely on curl commands and simple scripts. The new gRPC API will be used internally by the automation team. What is a significant challenge the company will face during this migration?

   • AgRPC uses JSON, which is harder for external partners to read than the binary format of REST.
   • BgRPC is slower than REST for this use case, so the migration will degrade performance.
   • CgRPC is not supported on Junos devices, so the migration is impossible.
   • DExternal partners will need to generate client code and use gRPC libraries, which is a significant change from simple curl commands.
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   Which Junos feature is commonly used alongside gRPC to define the telemetry data to be streamed?

   • AJunos Space
   • BJ-Web
   • CJuniper Telemetry Interface (JTI)
   • DJunos OS CLI
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5. 4application · medium

   A software engineer is designing a new service that will handle long-lived connections where the client and server need to send messages to each other asynchronously and independently. For example, a chat application where either side can send a message at any time. Which gRPC communication pattern is the most appropriate?

   • AClient-streaming RPC
   • BUnary RPC
   • CServer-streaming RPC
   • DBidirectional streaming RPC
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which use case is most suitable for gRPC over REST?

   • APublic APIs that need to be easily consumed by browsers
   • BSimple CRUD operations over the internet
   • CAPIs that require extensive caching at the HTTP level
   • DHigh-performance, low-latency communication between microservices
   Reveal Solution Discussion Select an answer first