15 real New Architecture questions from the React Native bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.
1. What is Fabric?
Senior
A.the rewritten rendering system that builds a concurrent shadow tree in C++ and commits it synchronously, replacing the old UI manager
B.the cross-platform C++ flexbox layout engine that computes positions and sizes from style rules for the native renderer
C.the open-source JavaScript engine optimized for mobile that precompiles to bytecode, cutting startup time and memory use
D.the compatibility shim that lets old-architecture libraries keep working while the app runs on the modern renderer and module system
2. Which term means: "the rewritten rendering system that builds a concurrent shadow tree in C++ and commits it synchronously, replacing the old UI manager"?
A.Hermes engine — the rewritten rendering system that builds a concurrent shadow tree in C++ and commits it synchronously, replacing the old UI manager
B.Hermes engine — the compatibility shim that lets old-architecture libraries keep working while the app runs on the modern renderer and module system
C.Hermes engine — the cross-platform C++ flexbox layout engine that computes positions and sizes from style rules for the native renderer
D.Hermes engine — the open-source JavaScript engine optimized for mobile that precompiles to bytecode, cutting startup time and memory use
11. Which term means: "the compatibility shim that lets old-architecture libraries keep working while the app runs on the modern renderer and module system"?
A.interop layer — the cross-platform C++ flexbox layout engine that computes positions and sizes from style rules for the native renderer
B.interop layer — the compatibility shim that lets old-architecture libraries keep working while the app runs on the modern renderer and module system
C.interop layer — the rewritten rendering system that builds a concurrent shadow tree in C++ and commits it synchronously, replacing the old UI manager
D.interop layer — the fully modernized runtime that removes the legacy message queue entirely so all communication goes through the C++ interface
14. Which term means: "the fully modernized runtime that removes the legacy message queue entirely so all communication goes through the C++ interface"?
A.bridgeless mode — the compatibility shim that lets old-architecture libraries keep working while the app runs on the modern renderer and module system
B.bridgeless mode — the open-source JavaScript engine optimized for mobile that precompiles to bytecode, cutting startup time and memory use
C.bridgeless mode — the cross-platform C++ flexbox layout engine that computes positions and sizes from style rules for the native renderer
D.bridgeless mode — the fully modernized runtime that removes the legacy message queue entirely so all communication goes through the C++ interface
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