Question 1

Struggling to handle boundary conditions of vowel checks when string contains zero or only one vowel.

Accepted Answer

Ensure validation logic accounts for strings of length less than 2, and trace empty string or single character inputs during dry runs.

Question 2

Failing to correctly restrict randomisation to a single met challenge, modifying multiple challenges instead.

Accepted Answer

Implement a control variable/boolean flag to break out of the modification loop immediately after the first swap or change is executed.

Question 3

Omitting the '#' symbol for immediate values in assembly language instructions (e.g., AND R0, R1, 15 instead of #15).

Accepted Answer

Double-check your syntax in trace tasks. Immediate numbers must always have a prefixed hash symbol; numbers without hashes indicate memory locations.

Question 4

Failing to store array values in a temporary variable before performing sliding/shifting operations, resulting in overwritten/lost elements.

Accepted Answer

Always declare a temporary variable (e.g. temp) to hold the boundary index value before executing array assignment/copy loops.

Question 5

Confusing the function of the control bus with other buses, claiming that it transmits raw data to memory.

Accepted Answer

Remember that raw data goes on the Data Bus, addresses go on the Address Bus, and control/synchronisation signals go on the Control Bus.

Question 6

Omitting necessary parentheses in regular expressions, applying operators (e.g., + or *) to individual letters instead of the intended block.

Accepted Answer

Use bracket grouping clearly, such as (ab)* instead of ab* when matching repeating sequences of 'ab'.

Question 7

Writing incorrect relational operators in SQL date filters and missing the check for the null date default '01/01/0001'.

Accepted Answer

Verify database schema documentation for default date formats and explicitly exclude placeholder/sentinel date entries.

Question 8

Failing to verify if a circular queue is full before incrementing its rear pointer, causing elements to be overwritten.

Accepted Answer

Always calculate current queue size or verify pointer equality against front pointer positions before executing insert steps.

試卷	時間	分數	題數	比重	題型
On-Screen Programming and Practical Assessment	2小時 30分鐘	100	37	50%	Short Answer Theory, Trace Table Analysis, Algorithm Design Description, Practical Programming from Scratch, Program Execution Evidence, Code Analysis / Object-Oriented Theory, Subclassing and Inheritance Mod, Procedural/In-place Array Manipulation, Iterative Logic Modification, Screen Evidence of Testing, Mathematical Vector Analysis of movement
Theoretical and Computational Principles Written Paper	2小時 30分鐘	100	26	50%	Calculations & Representations, Structured Analytical Essay, Technical Network Descriptions, SQL Queries & Database Theory, Assembly Trace Table

Computer Science 7517 考試技巧

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