Juniper
JN0-360 · Question #173
Which statement correctly describes unified in-service software upgrades (ISSU)?
The correct answer is D. Unified ISSU is based on nonstop-routing (NSR) and graceful Routing Engine switchover (GRES). See the full explanation below for the reasoning.
Question
Which statement correctly describes unified in-service software upgrades (ISSU)?
Options
- AUnified ISSU is built upon graceful-restart extensions to allow upgrades with no impact to the data plane.
- BUnified ISSU is supported on systems with single or dual Routing Engines.
- CUnified ISSU permits both upgrades and downgrades with no control plane disruption and is based on
- DUnified ISSU is based on nonstop-routing (NSR) and graceful Routing Engine switchover (GRES),
How the community answered
(39 responses)- A10% (4)
- B5% (2)
- C3% (1)
- D82% (32)
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