D684 Introduction to Computer Science - Set 5 - Part 2

Correct Answer: Statistical modeling

Statistical modeling analyzes historical dining patterns to predict meal duration based on group characteristics and ordering patterns.
Option b is incorrect because visual modeling creates graphical representations but doesn't predict dining duration from historical data.
Option c is incorrect because audio modeling processes sound, unrelated to predicting how long restaurant tables remain occupied.
Option d is incorrect because network modeling analyzes connections and traffic, not restaurant dining duration predictions.

Correct Answer: Dynamic simulation

Dynamic simulation continuously updates tire properties based on temperature and wear, providing realistic grip changes during racing.
Option a is incorrect because static simulation maintains constant properties, missing the grip variations crucial for realistic racing.
Option c is incorrect because visual simulation handles graphics rendering, not the physics of tire grip behavior.
Option d is incorrect because audio simulation generates sound effects, unrelated to tire grip physics modeling.

Correct Answer: Contact and time

Contact sensors detect case opening while time systems determine if it's during authorized hours, providing comprehensive security.
Option a is incorrect because motion sensors detect movement near cases but not actual case opening events.
Option c is incorrect because temperature sensors don't detect case opening and aren't relevant for security monitoring.
Option d is incorrect because light sensors might trigger falsely from external sources without detecting actual case access.

Correct Answer: Semantic clustering

Semantic clustering groups articles by meaning and context rather than exact words, identifying similar stories across sources.
Option a is incorrect because word counting misses articles using different vocabulary to describe the same events.
Option c is incorrect because random grouping doesn't identify related stories, mixing unrelated news content together.
Option d is incorrect because alphabetical sorting organizes by title letters, not grouping similar news stories.

Correct Answer: Inventory management

Inventory management tracks items, expiration dates, and quantities, enabling recipe suggestions that use ingredients before spoilage occurs.
Option b is incorrect because temperature management maintains cooling but doesn't track individual food items or expiration dates.
Option c is incorrect because power management controls energy usage, not food inventory or recipe suggestions.
Option d is incorrect because display management handles screen content, not tracking food items and expiration dates.

Correct Answer: Object recognition

Object recognition identifies safety equipment like helmets and vests, verifying worker compliance with safety regulations on site.
Option a is incorrect because face recognition identifies people but doesn't verify if they're wearing required safety equipment.
Option c is incorrect because voice recognition processes speech, unable to verify visual safety equipment presence.
Option d is incorrect because text recognition reads written words, not identifying physical safety equipment on workers.

Correct Answer: Solar tracking

Solar tracking systems calculate sun position and adjust panel angles continuously, maximizing energy capture throughout daylight hours.
Option a is incorrect because random tracking would point panels away from the sun, reducing energy generation significantly.
Option c is incorrect because wind tracking would orient panels for airflow, not optimal solar energy collection angles.
Option d is incorrect because manual tracking requires constant human adjustment, impractical for continuous optimization.

Correct Answer: Motion stabilization

Motion stabilization analyzes frame movements to remove shake while preserving deliberate pans and tilts in video footage.
Option b is incorrect because color stabilization corrects color variations but doesn't address camera shake in footage.
Option c is incorrect because audio stabilization processes sound, not the visual shake in handheld video recordings.
Option d is incorrect because format stabilization maintains file formats, not correcting shaky camera movements in video.

Correct Answer: Bin packing

Bin packing optimizes fitting items into containers considering constraints like weight distribution and access order requirements.
Option b is incorrect because route finding determines paths between locations, not arranging containers on ships efficiently.
Option c is incorrect because pattern matching identifies recurring sequences, not optimizing physical container placement on vessels.
Option d is incorrect because code breaking decrypts messages, completely unrelated to container loading optimization problems.

Correct Answer: Burst tracking

Burst tracking transmits location data periodically in short bursts, conserving battery while providing migration pattern data.
Option a is incorrect because continuous tracking drains batteries quickly, failing to last entire migration seasons.
Option c is incorrect because random tracking provides inconsistent data, making migration pattern analysis difficult or impossible.
Option d is incorrect because manual tracking requires physical observation, impossible for thousands of birds across continents.

Correct Answer: PID control

PID control continuously adjusts based on proportional, integral, and derivative feedback, maintaining precise environmental conditions for artwork.
Option a is incorrect because on-off control creates temperature fluctuations harmful to delicate artwork requiring stable conditions.
Option c is incorrect because random control would vary conditions unpredictably, potentially damaging valuable paintings through environmental stress.
Option d is incorrect because manual control lacks precision and consistency needed for artwork preservation requirements.

Correct Answer: Decentralized encrypted

Decentralized encrypted architecture synchronizes encrypted messages across devices without servers accessing plaintext content, maintaining privacy.
Option a is incorrect because centralized plaintext exposes messages on servers, violating end-to-end encryption privacy principles.
Option c is incorrect because local only storage prevents synchronization across multiple devices, limiting messaging app usefulness.
Option d is incorrect because server-side decryption breaks end-to-end encryption by allowing servers to read messages.

Correct Answer: Heat mapping

Heat mapping visualizes customer movement density throughout stores, revealing high-traffic areas for optimal product placement decisions.
Option b is incorrect because sound mapping tracks noise levels, not customer movement patterns through retail spaces.
Option c is incorrect because temperature mapping shows thermal variations, not foot traffic patterns in stores.
Option d is incorrect because pressure mapping might damage floors and provides less comprehensive traffic data.

Correct Answer: Distributed checkpoints

Distributed checkpoints spread access control across multiple points, preventing bottlenecks while maintaining area-specific ticket verification.
Option a is incorrect because single checkpoints create massive bottlenecks as all attendees funnel through one location.
Option c is incorrect because random checking allows unauthorized access to restricted areas, compromising venue control.
Option d is incorrect because honor system provides no actual access control, allowing anyone into restricted areas.

Correct Answer: Fuzzy matching

Fuzzy matching finds similar but not identical phrases, providing relevant translation suggestions despite minor text variations.
Option a is incorrect because exact matching misses helpful translations with slight differences in wording or structure.
Option c is incorrect because random matching provides irrelevant suggestions, not helping maintain translation consistency.
Option d is incorrect because sequential matching assumes order dependency, inappropriate for finding similar translated phrases.

Correct Answer: Activity classification

Activity classification algorithms analyze motion patterns to identify exercise types like running, cycling, or swimming automatically.
Option b is incorrect because color classification analyzes visual properties, not motion patterns from fitness sensor data.
Option c is incorrect because size classification categorizes by dimensions, not relevant for exercise type identification.
Option d is incorrect because temperature classification sorts by heat levels, not useful for distinguishing exercise types.

Correct Answer: Synchronized timing

Synchronized timing coordinates signals across intersections to create continuous green paths for emergency vehicles through traffic.
Option a is incorrect because independent timing at each intersection disrupts green corridors, stopping emergency vehicles repeatedly.
Option c is incorrect because random timing creates unpredictable patterns, preventing reliable emergency vehicle corridor creation.
Option d is incorrect because fixed timing cannot adapt to create dynamic corridors when emergency vehicles need them.

Correct Answer: Change tracking

Change tracking monitors file modifications continuously, identifying exactly which files need backup without full drive scans.
Option a is incorrect because full scanning wastes time checking unchanged files, making backups unnecessarily slow.
Option c is incorrect because random checking misses changed files, creating incomplete backups missing important data.
Option d is incorrect because size comparison alone misses edits that don't change file sizes significantly.

Correct Answer: Engagement analytics

Engagement analytics tracks interaction patterns like mouse movement and focus time, indicating student attention during online lessons.
Option b is incorrect because network analytics monitors data traffic, not indicating whether students are paying attention.
Option c is incorrect because storage analytics tracks disk usage, unrelated to student engagement in virtual classrooms.
Option d is incorrect because color analytics examines visual properties, not measuring student attention or engagement.

Correct Answer: Nesting optimization

Nesting optimization arranges irregular shapes efficiently on sheets, minimizing wasted material in printing and cutting operations.
Option b is incorrect because speed optimization reduces time but doesn't address material waste from poor layout arrangement.
Option c is incorrect because color optimization improves appearance but doesn't minimize paper waste from inefficient layouts.
Option d is incorrect because sound optimization reduces noise, completely unrelated to minimizing material waste in printing.