Which two protocols are used to implement SAN telemetry on Cisco MDS switches? (Choose two.)

Question

Options

• ARPC transport
• BGPB transport
• CgRPC transport
• DgRPC encoding
• EGPB encoding

• A
  3% (2)
• B
  9% (6)
• C
  84% (58)
• D
  4% (3)

Explanation

On Cisco MDS switches, SAN telemetry streaming uses gRPC as the transport (how data is carried across the network) and GPB (Google Protocol Buffers) as the encoding (how data is serialized into a compact binary format). These two technologies work together: gRPC establishes the communication channel, and GPB defines the data structure transmitted through it.

Why the distractors are wrong:

• A (RPC transport): Too generic - the protocol is specifically gRPC (Google's implementation), not plain RPC.
• B (GPB transport): GPB is an encoding format, not a transport mechanism; it cannot carry data on its own.
• D (gRPC encoding): gRPC is a transport framework, not an encoding format - it handles delivery, not serialization.

Memory tip: Think of it as shipping: gRPC is the truck (transport) and GPB is the packaging (encoding). You need both the truck and the packaging, and you can't confuse one for the other. "go Right to Protocol Buffers" - gRPC → transport, GPB → encoding.

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