To determine the number of partitions using one-dimensional equivalence partitioning, we need to consider each aspect of the ID requirement individually.
* Length of the ID:
* Valid partitions: 5 to 10 characters (1 partition)
* Invalid partitions: Less than 5 characters, more than 10 characters (2 partitions)
* Type of characters:
* Valid partitions: Alphanumeric characters (1 partition)
* Invalid partitions: Non-alphanumeric characters (1 partition)
* Type of first character:
* Valid partitions: First character is a letter (1 partition)
* Invalid partitions: First character is not a letter (1 partition)
Adding these together, we have a total of 1 (valid length) + 2 (invalid lengths) + 1 (valid type) + 1 (invalid type) + 1 (valid first character) + 1 (invalid first character) = 7 partitions.
Reference:
ISTQB CTFL Syllabus, section on equivalence partitioning and test design techniques.

In the ISTQB terminology:
* A defect (also known as a bug or fault) is an issue in the code that can cause a failure.
* A failure is the observable incorrect behavior or output of the software due to a defect.
In this scenario, the memory leak is the defect in the application code that causes the application not to release dynamically allocated memory properly. The observable effect of this defect, which is the slowdown in response time, is considered a failure because it is the manifestation of the defect that prevents the application from meeting its performance requirements.

The statement "Achieving full code coverage for a component or a system ensures that it has been fully tested" is false because achieving full code coverage does not necessarily mean that all possible defects have been identified or that the system is free of bugs. Code coverage metrics, such as statement coverage, branch coverage, or path coverage, only measure the extent to which the source code has been executed during testing, but they do not guarantee that all logical paths or use cases have been exercised or that the code behaves correctly under all conditions.
Full code coverage indicates that every line of code has been executed at least once, but it does not account for the quality of the test cases or their ability to detect defects. There can still be issues related to performance, usability, security, and other non-functional aspects that are not addressed by code coverage alone.
References:
The official ISTQBCTFL syllabus outlines the limitations of code coverage and emphasizes that while it is an important metric, it does not guarantee the absence of defects or that the software is fully tested.

This answer is correct because it follows the logical dependencies and allows executing the test cases in priority order. TC4, TC3, and TC2 are executed first because they have the highest priority. TC6 is executed next because it has a logical dependency on TC2. TC1 is executed next because it has a logical dependency on TC5. Finally, TC5 is executed last because it has the lowest priority. References: ISTQB Certified Tester Foundation Level (CTFL) v4.0 documents

The correct tool forcreating test cases, test data, and test proceduresis atest design and implementation tool (A).
* (B) is incorrectas static testing tools focus oncode analysis, not test case creation.
* (C) is incorrectbecause DevOps tools manageautomation pipelines, not test design.
* (D) is incorrectbecause test execution tools focus onrunning tests rather than designing them.
Test design tools helpoptimize test coverage, reduce redundancy, and improve efficiency.
Reference:ISTQB CTFL v4.0 Syllabus, Section 6.1 - Test Design Tools