Training Data Poisoning COASP Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   Which poisoning technique involves changing the assigned class of existing training samples to a different class?

   • ABackdoor insertion
   • BData injection
   • CLabel flipping
   • DFeature perturbation
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   How does a successful data poisoning attack affect a machine learning model's integrity?

   • AIt encrypts the model's weights so the model cannot be used
   • BIt causes the model to make incorrect predictions on specific inputs or degrade overall performance
   • CIt permanently deletes the model's training data from storage
   • DIt only affects the model's inference speed, not its accuracy
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A company trains a sentiment analysis model on product reviews. An attacker poisons the training data by injecting a large number of negative reviews for a competitor's product, causing the model to rate that product poorly. Which impact assessment correctly describes the consequence of this poisoning attack?

   • AThe model's confidence scores for all predictions decrease, but the classification accuracy remains stable
   • BThe model's sentiment predictions for the competitor's product are biased toward negative, affecting downstream business decisions
   • CThe model's feature extraction layer is corrupted, causing all sentiment predictions to be random
   • DThe model's overall accuracy on all products decreases uniformly, making the attack easy to detect
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   Which of the following best describes the impact of a targeted data poisoning attack on model accuracy?

   • AThe model's accuracy always drops to near zero
   • BThe model may maintain high overall accuracy but fail on specific attacker-chosen inputs
   • CThe model's accuracy improves on all classes
   • DThe model's accuracy is unaffected in every case
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   An attacker compromises a third-party data vendor that supplies a portion of the training dataset. What type of attack vector does this represent?

   • ASupply chain compromise of the training data
   • BAdversarial example attack
   • CPrompt injection attack
   • DModel inversion attack
   Reveal Solution Discussion Select an answer first