CSP mock exam review

[Shayanb1]

Question 6
Mistake: I chose B because I thought only Program I worked and didn’t fully trace Program II.
Correction: The correct answer is C because both Program I and Program II successfully move the robot to the gray square.
Lesson Learned: Trace every step of each program carefully before deciding which answers work.

Question 11
Mistake: I chose B and thought the triplet represented light yellow instead of ivory.
Correction: The correct answer is A because (11111111, 11111111, 11110000) converts to (255, 255, 240), which matches ivory.
Lesson Learned: Convert binary RGB values to decimal before comparing to the color table.

Question 17
Mistake: I chose C and did not realize that all digital data, including integers and characters, are represented by bits.
Correction: The correct answer is D because sequences of bits represent all digital data at the lowest level.
Lesson Learned: Remember that bits are the fundamental representation of all digital information.

Question 23
Mistake: I chose C because I misread the conditions and thought the algorithm used OR instead of AND.
Correction: The correct answer is D because the flowchart sets available to true only when weekday is true and miles are less than 20.
Lesson Learned: Carefully trace all conditions in a flowchart to understand the logic before matching to code.

Question 29
Mistake: I chose D and thought no compression was needed.
Correction: The correct answer is A because lossless compression allows the original file to be fully reconstructed after transmission.
Lesson Learned: Lossless compression preserves all data so the exact original can be restored.

Question 35
Mistake: I chose C because I thought MaxFour generalized MaxTwo and MaxThree.
Correction: The correct answer is B because Max(numList) works for any number of inputs, fully generalizing MaxTwo and MaxThree.
Lesson Learned: Generalization means handling any number of inputs, not just a fixed number.

Question 38
Mistake: I chose C, incorrectly thinking IPv6 removed hierarchy in addresses.
Correction: The correct answer is B because IPv6 provides a larger address space than IPv4, supporting more devices.
Lesson Learned: Focus on the actual improvements of new technologies over old versions.

Question 52
Mistake: I chose C and assumed the simulation displayed total population at the end.
Correction: The correct answer is A because the simulation displays the change in population and stops after 24 hours or when population reaches 0.
Lesson Learned: Carefully read what the simulation outputs versus what it tracks internally.

Question 58
Mistake: I chose D and thought the procedure worked for all inputs.
Correction: The correct answer is C because the procedure returns false when x = z and y is different, which does not match the intended behavior.
Lesson Learned: Make sure all possible input combinations are tested to verify a procedure works as intended.

Question 61
Mistake: I chose A and C, incorrectly thinking restricting access could help reduce the digital divide.
Correction: The correct answers are B and D because accessibility features and improved network infrastructure help more people access technology.
Lesson Learned: Reducing the digital divide requires making technology accessible and available, not limiting it.

Question 67
Mistake: I chose B and D, incorrectly assuming the procedure would count occurrences correctly.
Correction: The correct answers are A and B because the count variable is reset inside the loop, causing incorrect results for multiple occurrences.
Lesson Learned: Be careful with variable placement inside loops; resetting counters inside the loop can break the intended logic.

Analysis of Strengths and Weaknesses

• Strengths: Networking concepts (IPv6), basic algorithms.
• Weaknesses: Loop logic, conditional statements, procedure generalization, tracing code execution.
• Common mistakes: Misreading flowcharts, misplacing counters in loops, confusing OR/AND conditions.

Future Steps to Review

• Practice tracing loops and nested conditionals step by step.
• Review generalization of functions and procedures for any number of inputs.
• Drill digital literacy topics, like compression and accessibility concepts.
• Work on reading and interpreting flowcharts and pseudocode carefully.

What I Can Do to Master These Topics

• I will do daily loop tracing exercises with varying inputs, including nested loops and edge cases.
• I will practice writing and debugging procedures with multiple input combinations to verify correctness.
• I will use flashcards to memorize key differences between IPv4 vs IPv6, lossless vs lossy compression, and AND vs OR logic.
• I will draw out flowcharts by hand and trace every branch before matching to pseudocode.
• I will create a dedicated RGB conversion cheat sheet and practice binary-to-decimal conversions regularly.
• I will explain each problem out loud or to a study partner to confirm true understanding.
• I will review generalization concepts by practicing rewriting fixed-input functions to handle any number of inputs.
• I will study digital divide topics including accessibility features, infrastructure, and equity in technology access.
• I will time myself on practice tests to build speed and accuracy under exam conditions.
• I will keep a running error log of repeated mistakes to identify and address persistent weak spots.
• I will watch video walkthroughs of tricky algorithm and flowchart problems to see step-by-step reasoning.

Summary of mastery for each topic:

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Skills I should work on the most:

• 2.1 - 3/5
• 2.2 - 0/1
• 3.13 - 0/1
• 5.2 - 0/1