Backpropagation-Quiz

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1. What quantity does backpropagation compute for a neural network's relevant weights?
   • Derivatives of the loss with respect to those weights
   • A causal percentage of total error uniquely assigned to each weight
   • The architecture drawing without any calculation
   • A permanently updated set of weights without an optimizer
2. Welche mathematische Regel liegt der Backpropagation zugrunde?
   • Der Satz des Pythagoras
   • Satz von Bayes
   • Die Kettenregel der Analysis
   • Die quadratische Formel
3. Why can reverse-mode backpropagation compute many parameter derivatives efficiently?
   • It avoids all local derivatives
   • It reuses graph structure and relevant intermediate results
   • It calculates only the output prediction again
   • It guarantees every implementation has exactly one forward pass of runtime
4. In welcher Reihenfolge berechnet die Backpropagation Gradienten?
   • Von der Eingabeschicht zur Ausgabeschicht
   • Alle Ebenen gleichzeitig ohne Reihenfolge
   • Nur für die mittlere verborgene Ebene
   • Von der Ausgabeschicht zurück zur Eingabeschicht
5. Does computing backpropagation gradients by itself establish that model weights were updated?
   • Yes; every backward computation automatically applies a learning rate
   • Yes; gradient values always replace the weights directly
   • No; the optimizer update is a separate step
   • Only if the network has no parameters
6. In a conventional cached-backpropagation workflow, what does the forward computation provide for later derivative calculations?
   • Relevant intermediate values that can be retained for the backward computation
   • A completed optimizer update without any update rule
   • A guarantee that all later evaluation errors disappear
   • A permanent deletion of the training objective
7. On one composed backpropagation path, local scalar derivatives are three and four. What is their chain-rule product?
   • Sieben
   • Eins
   • Three quarters
   • Zwölf
8. A shared parameter has loss-gradient contributions two and five through two paths. What combined contribution is accumulated?
   • Zehn
   • Sieben
   • Drei
   • Two fifths