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1. Why does a positive feedback loop not usually maintain homeostasis? A. It always restores balance B. It never occurs in the body C. It only works in plants D. It amplifies change until a specific event ends it, rather than restoring a set point Correct Answer: D. It amplifies change until a specific event ends it, rather than restoring a set point Rationale: Most homeostatic control is negative feedback. 2. A patient's blood glucose rises after a meal. Which sequence correctly desc...

WGU D269 Composition Writing with a Strategy: Practice Test 2 (Units 8-13) - Questions with Correct Answers 100 questions 1. Popular sources such as magazines are written for: A. Specialist researchers only B. Peer reviewers C. Courts D. General audiences Correct Answer: D. General audiences Rationale: Accessibility. 2. Lateral reading means: A. Reading only the article itself B. Reading sideways C. Skimming headings D. Checking what other sou

WGU D269 Composition Writing with a Strategy: Practice Test 1 (Units 1-7) - Questions with Correct Answers 100 questions 1. Tone is: A. The volume of speech B. The topic C. The thesis D. The writer's attitude conveyed through word choice and style Correct Answer: D. The writer's attitude conveyed through word choice and style Rationale: Attitude in writing. 2. Mode of writing that describes sensory details is: A. Argumentative B. Descriptive C. Expository D. Technical Correc...

WGU D269 Composition Writing with a Strategy: Final Exam (Comprehensive) - Questions with Correct Answers 100 questions 1. A thesis that is too broad can be narrowed by limiting: A. Font size B. Punctuation C. Time, place, population or aspect D. Citations Correct Answer: C. Time, place, population or aspect Rationale: Scope. 2. A thesis for a cause-and-effect essay should: A. List events randomly B. State the causal relationship being explained or argue

WGU C950 Data Structures and Algorithms II: Exam 2 Questions with Correct Answers 100 questions 1. The 'n' in Big-O analysis represents: A. The number of programmers B. The speed of the CPU C. A constant D. The size of the input Correct Answer: D. The size of the input Rationale: Input size. 2. Appending to the end of a Python list is: A. O(n) always B. O(log n) C. O(n^2) D. Amortized O(1) Correct Answer: D. Amortized O(1) Rationale: Occasional resize. 3. Checking members...

WGU C950 Data Structures and Algorithms II: Exam 1 Questions with Correct Answers 100 questions 1. If f(n) = 100n and g(n) = n^2, for large n: A. f grows faster than g B. They grow equally C. g grows faster than f D. Neither grows Correct Answer: C. g grows faster than f Rationale: Quadratic dominates. 2. An algorithm that processes each pair of n items once has complexity about: A. O(n^2) B. O(n) C. O(log n) D. O(1) Correct Answer: A. O(n^2) Rationale: n(n-1)/2 pairs. 3. Compu...

WGU C950 Data Structures and Algorithms II: Practice Test 2 (Units 8-13) - Questions with Correct Answers 100 questions 1. Path reconstruction in Dijkstra's algorithm uses: A. A second graph B. Sorting C. Hashing only D. A predecessor (previous) array or map Correct Answer: D. A predecessor (previous) array or map Rationale: Backtrack from target. 2. Shortest path problems with time windows (deliveries must arrive by deadlines) are: A. Simpler than plain shortest path B. Solved by...

WGU C950 Data Structures and Algorithms II: Midterm Exam (Units 1-7) - Questions with Correct Answers 100 questions 1. Big-O analysis helps a developer: A. Choose variable names B. Format output C. Predict how a program will scale as data grows D. Write comments Correct Answer: C. Predict how a program will scale as data grows Rationale: Scalability. 2. Two nested loops that each run n times give a complexity of: A. O(n) B. O(2n) C. O(n^2) D. O(log n) Correct Answer: C. O(n^2) Ra...

WGU C950 Data Structures and Algorithms II: Final Exam (Comprehensive) - Questions with Correct Answers 100 questions 1. Chaining is often preferred over open addressing when: A. Memory is extremely limited B. Keys never collide C. The load factor may exceed 1 or deletions are frequent D. The table is tiny Correct Answer: C. The load factor may exceed 1 or deletions are frequent Rationale: Flexibility. 2. A bucket implemented as a Python list of [key, value] pairs supports: A. Open ad...

WGU C950 Data Structures and Algorithms II: Exam 3 Questions with Correct Answers 100 questions 1. A function that calls itself twice per call with input n-1 (like naive Fibonacci) has complexity about: A. O(n) B. O(2^n) C. O(log n) D. O(n^2) Correct Answer: B. O(2^n) Rationale: Exponential recursion tree. 2. The lower bound for comparison-based sorting in the worst case is: A. Omega(n) B. Omega(n log n) C. Omega(1) D. Omega(n^2) Correct Answer: B. Omega(n log n) Rationale: Dec...

Pediatric Immunization: Practice Test 2 (Units 8-13) - Questions with Correct Answers 100 questions 1. A 5-month-old receiving catch-up should get rotavirus vaccine if: A. The infant is 5 months, regardless of prior doses B. The infant is breastfed C. The first dose was started by 14 weeks 6 days and the final dose can be given by 8 months D. It is winter Correct Answer: C. The first dose was started by 14 weeks 6 days and the final dose can be given by 8 months Rationale: Age limits. ...

WGU D291 Learning Experience Design Foundations I: Exam 2- Questions with Correct Answers 50 questions 1. An evidence-based design decision is one that: A. Follows the newest trend only B. Is supported by research or data about learners C. Reflects personal taste D. Is chosen randomly Correct Answer: B. Is supported by research or data about learners Rationale: E.g., using spaced practice. 2. The TPACK framework describes the integration of: A. Time, place and cost B. Testing, plannin...

WGU D291 Learning Experience Design Foundations I: Exam 1- Questions with Correct Answers 50 questions 1. The 'learning experience' includes: A. Only the final test B. Everything learners encounter: content, interactions, emotions, tools and context C. Only video content D. Only the classroom Correct Answer: B. Everything learners encounter: content, interactions, emotions, tools and context Rationale: Holistic view. 2. Which question best reflects LXD thinking? A. "How many ...

WGU D291 Learning Experience Design Foundations I: Midterm Exam (Units 1-7) - Questions with Correct Answers 50 questions 1. LXD treats learners' emotions as important because: A. Emotions are irrelevant to learning B. Emotions only matter for children C. Emotions slow design D. Emotions affect motivation, attention and memory Correct Answer: D. Emotions affect motivation, attention and memory Rationale: Affective factors matter. 2. A case study approach in D291 tasks requires desig...

WGU D291 Learning Experience Design Foundations I: Exam 3- Questions with Correct Answers 50 questions 1. A goal-oriented learning experience means: A. Activities are designed to help learners reach defined outcomes B. Learners choose any activity with no purpose C. Only grades matter D. Content is covered as quickly as possible Correct Answer: A. Activities are designed to help learners reach defined outcomes Rationale: Outcomes drive design. 2. Learning sciences contribute to LXD by p...

WGU E224 Global and Population Health Exam 3 - Questions with Correct Answers (Verified Update) 50 questions 1. A nurse completing E224 clinical hours runs a blood pressure screening at a food bank and refers people with high readings to a free clinic. Which levels of prevention and intervention are used? A. Primary prevention only B. Tertiary prevention only C. Secondary prevention through screening, plus referral and follow-up D. No prevention Correct Answer: C. Secondary prevention ...

WGU E224 Global and Population Health Exam 1 - Questions with Correct Answers (Verified Update) 50 questions 1. Which term describes organized efforts of society, often led by government, to prevent disease and promote health in communities? A. Acute care B. Clinical medicine C. Private practice D. Public health Correct Answer: D. Public health Rationale: Public health focuses on communities rather than individual treatment. 2. Which statement best describes the nurse's role in pop...

WGU E224 Global and Population Health Practice Test 1 (Units 1-7) - Questions with Correct Answers (Verified Update) 50 questions 1. Which definition best describes population health? A. Care delivered to one patient in a hospital B. The health outcomes of a defined group of individuals and the distribution of those outcomes within the group C. Health care financed only by governments D. Health issues limited to low-income countries Correct Answer: B. The health outcomes of a defined gr...

WGU E224 Global and Population Health Midterm Exam (Units 1-7) - Questions with Correct Answers (Verified Update) 50 questions 1. A health system tracks blood sugar control for all its patients with diabetes and contacts those with poor control. This is an example of: A. Global health diplomacy B. Tertiary prevention only for one person C. Environmental health D. Population health management Correct Answer: D. Population health management Rationale: Health systems manage the health of ...

WGU E224 Global and Population Health Final Exam (Comprehensive) - Questions with Correct Answers (Verified Update) 50 questions 1. Which statement correctly distinguishes public health from population health? A. They are completely unrelated B. Public health is often government-led and community-wide; population health focuses on outcomes and determinants for any defined group, including a health system's patients C. Population health only refers to global health