Computer Basics
653 questions available
FILTER BY SUBTOPIC
Q241.Which structure stores 'if-then' rules in a classic rule-based expert system?
Correct Answer: B
Rule-based systems store domain knowledge as 'if-then' conditional rules inside a component called the rule base.
Q242.Which of the following is a key risk when LLMs are used in investigations?
Correct Answer: B
LLMs can hallucinate, generating false yet convincing content—risky for evidence.
Q243.Reinforcement Learning from Human Feedback (RLHF) is mainly used to:
Correct Answer: B
RLHF fine-tunes models using human feedback to align outputs with human values.
Q244.Which evaluation curve plots true positive rate against false positive rate?
Correct Answer: B
The ROC curve plots TPR vs FPR to evaluate classifier performance.
Q245.The 'temperature' parameter in an LLM controls:
Correct Answer: C
Higher temperature increases output randomness; lower makes outputs more deterministic.
Q246.What does 'recall' measure?
Correct Answer: D
Recall = TP / (TP + FN): proportion of actual positives correctly identified.
Q247.What distinguishes 'stochastic gradient descent' (SGD) from batch gradient descent?
Correct Answer: B
SGD updates weights using one or a few samples per step, speeding training.
Q248.Which technique enables an LLM to perform step-by-step reasoning?
Correct Answer: B
Chain-of-Thought prompting elicits intermediate reasoning steps from LLMs.
Q249.Which concept measures a model's error from overly simple assumptions?
Correct Answer: B
High bias stems from oversimplified models that underfit the data.
Q250.Which concept measures error from sensitivity to small data fluctuations?
Correct Answer: D
High variance means the model is too sensitive to training data fluctuations (overfits).
Q251.A model trained on past arrests predicts future suspects. The key XAI requirement before deployment is:
Correct Answer: C
High-stakes models require interpretability for justification, audit, and fairness review.
Q252.Which type of memory is commonly used for storing firmware in embedded systems?
Correct Answer: B
ROM (Read-Only Memory) is non-volatile and ideal for storing permanent firmware.
Q253.Which of the following is a type of non-volatile storage device that is used to store data permanently, even when the power is turned off?
Correct Answer: A
ROM (Read Only Memory) is a non-volatile memory that retains its contents permanently without power.
Q254.Which type of bus provides a path to transfer data between CPU and memory?
Correct Answer: A
The Data Bus transfers actual data (operands, values) between the CPU and memory.
Q255.Which volatile RAM is faster?
Correct Answer: B
SRAM (Static RAM) is much faster than DRAM because it does not require periodic refreshing.
Q256.CPU stands for?
Correct Answer: A
CPU stands for Central Processing Unit, the primary hardware component that executes instructions.
Q257.Which bus provides the fastest communication between CPU and RAM?
Correct Answer: A
The Front Side Bus (FSB) carries data between the CPU and the system memory controller.
Q258.Which logic gate outputs true only when inputs are different?
Correct Answer: B
The XOR (Exclusive OR) gate outputs high (true) only when its inputs differ.
Q259.Which of the following is not a characteristic of Object-Oriented Programming?
Correct Answer: A
Compilation is a language processing phase, whereas polymorphism, encapsulation, and inheritance are OOP features.
Q260.Which is not a hardware of computer?
Correct Answer: C
Windows is an operating system (software), while Monitor, Keyboard, and Printer are physical hardware.