Showing 1961–1980 of 4795

Q1961.Which AI subfield enables machines to make decisions by applying rules like human experts?

Easy
A Computer Vision
B Data Mining
C Robotics
D Expert Systems
Computer Terminology PPSC

Correct Answer: D

Expert Systems represent a classic AI field that mimics the logical decision-making of human domain experts using predefined rule bases.

Q1962.An expert system mainly consists of a knowledge base and which of the following?

Easy
A Spreadsheet
B Inference engine
C Web server
D Compiler
General MCQs PPSC

Correct Answer: B

The inference engine is the brain of an expert system, applying logical rules to the knowledge base to deduce solutions.

Q1963.Which type of neural network is best suited for sequential, temporal, or time-series data?

Easy
A RNN
B GAN
C SVM
D CNN
Computer Terminology PPSC

Correct Answer: A

Recurrent Neural Networks (RNNs) feature internal memory loops, making them ideal for processing sequence data like text and time-series.

Q1964.What is the vanishing gradient problem associated with?

Easy
A Gradients becoming too small in deep neural networks during backpropagation
B Having too much training data
C Overfitting on small datasets
D Faster model training
Computer Terminology PPSC

Correct Answer: A

Vanishing gradients occur when error signals shrink exponentially as they propagate backward through deep networks, stopping early layers from learning.

Q1965.Which loss function is most commonly used for classification problems?

Easy
A Euclidean distance
B R-squared
C Mean Squared Error
D Cross-Entropy
General MCQs PPSC

Correct Answer: D

Cross-Entropy loss (log loss) measures the performance of a classification model whose output is a probability value between 0 and 1.

Q1966.Which company developed the LLaMA family of large language models?

Easy
A Microsoft
B OpenAI
C Meta
D Google
Computer Networks PPSC

Correct Answer: C

LLaMA (Large Language Model Meta AI) is an open-access foundational model family developed and released by Meta.

Q1967.What is 'tokenization' in NLP?

Easy
A Breaking text into smaller units (tokens)
B Compressing files
C Encrypting text
D Translating languages
Computer Networks PPSC

Correct Answer: A

Tokenization is the process of splitting raw text strings into smaller meaningful units like words or subwords before feeding them into an NLP model.

Q1968.Which technique generates new realistic data by setting two neural networks in competition?

Easy
A GAN
B RNN
C CNN
D KNN
Computer Terminology PPSC

Correct Answer: A

Generative Adversarial Networks (GANs) utilize a generator (creating fakes) and a discriminator (checking authenticity) in a game-theoretic competition.

Q1969.In a GAN, the two main competing components are the generator and the?

Easy
A Optimizer
B Discriminator
C Encoder
D Classifier
General MCQs PPSC

Correct Answer: B

The discriminator acts as a classifier, trying to distinguish between real training data and synthetic data produced by the generator.

Q1970.What is 'transfer learning' in machine learning?

Easy
A Deleting model weights
B Moving files between hard disks
C Reusing a pre-trained model as a starting point for a related new task
D Encrypting models
Computer Terminology PPSC

Correct Answer: C

Transfer learning leverages knowledge learned from training on a massive dataset to accelerate learning on a new, related task.

Q1971.Which evaluation metric measures the average squared difference between predictions and actual values in regression?

Easy
A Accuracy
B Mean Squared Error
C F1-Score
D Recall
General MCQs PPSC

Correct Answer: B

Mean Squared Error (MSE) is a standard metric used to measure model accuracy for continuous regression tasks.

Q1972.Which of the following best describes 'reinforcement learning'?

Easy
A Learning from clustering
B Learning from data compression
C Learning from trial-and-error actions via rewards and penalties
D Learning from labeled historical data
Computer Basics PPSC

Correct Answer: C

Reinforcement learning involves an agent interacting with an environment, learning to make decisions by maximizing cumulative rewards.

Q1973.What does the term 'feature' mean in machine learning?

Easy
A A loss value
B An output label
C An individual measurable property or variable of a phenomenon
D A hidden layer
Computer Terminology PPSC

Correct Answer: C

A feature is an explanatory variable or individual input column used by machine learning models to make predictions.

Q1974.Which AI large language model family powers Anthropic's chatbot?

Easy
A Gemini
B Claude
C Grok
D Copilot
Computer Terminology PPSC

Correct Answer: B

Claude is Anthropic's flagship family of highly advanced large language models.

Q1975.What is 'data augmentation' commonly used for?

Easy
A Deleting outliers
B Reducing dataset size
C Encrypting data
D Artificially increasing training dataset size and variety
General MCQs PPSC

Correct Answer: D

Data augmentation applies random transformations (like rotation, scaling, or cropping) to existing training data to create diverse new samples.

Q1976.Which machine learning algorithm is a supervised classification method based on finding optimal separating hyperplanes?

Easy
A Support Vector Machine
B K-Means
C Apriori
D DBSCAN
Computer Terminology PPSC

Correct Answer: A

Support Vector Machine (SVM) is a supervised algorithm that searches for the optimal hyperplane maximizing the margins between classes.

Q1977.What is the role of the 'learning rate' in training deep neural networks?

Easy
A Counts hidden neurons
B Measures final accuracy
C Stores model data
D Controls the step size of weight updates during optimization
Computer Terminology PPSC

Correct Answer: D

The learning rate is a critical hyperparameter that dictates the step size taken by the optimization algorithm (like SGD) toward a minimum loss.

Q1978.What is 'sentiment analysis' in NLP?

Easy
A Determining the emotional tone (positive/negative/neutral) of text
B Counting words in a page
C Translating text to another language
D Encrypting private messages
Computer Networks PPSC

Correct Answer: A

Sentiment analysis uses NLP to identify, extract, and study subjective emotional tones within text data.

Q1979.Which method partitions data to evaluate model performance and generalization reliably?

Easy
A Encryption
B Cross-validation
C Normalization
D Tokenization
Computer Security PPSC

Correct Answer: B

Cross-validation is a statistical resampling technique that splits data into folds to train and test models iteratively, ensuring robust performance evaluation.

Q1980.In digital forensics, AI is primarily used to?

Easy
A Cook food
B Analyze and process large volumes of digital evidence quickly
C Print case documents
D Build server hardware
Computer Terminology PPSC

Correct Answer: B

AI systems assist forensic investigators by quickly searching, categorizing, and filtering through massive sets of hard drive or chat log evidence.