SDD HSC Quiz 4E Q1-10

If RND generates a number in the range 0 up to 1 then INT(RND*16)+2 will generate integers in the range:

• 2 to 16.
• 0 to 15.
• 2 to 17.
• 3 to 19.

Test data for algorithms needs to be designed to test:

• all paths through the algorithm and each boundary condition.
• for unexpected inputs.
• for syntax errors in the source code.
• All of the other answers.

A variable used as a parameter in a call to a sub-program:

• must always have the same name.
• must be of the same type as the parameter.
• would normally be a global variable.
• All of the other answers.

The identifiers or names used to declare local variables:

• must be unique within the entire program.
• cause errors if used in more than one subroutine.
• can be used in multiple subroutines without affecting each other.
• cannot be used as parameters in procedure and function calls.

Models of the system, such as dataflow diagrams and structure charts:

• should be updated as algorithms are developed.
• remain static once they have been created.
• are used to assist in the training of users.
• need to be revised to describe the logic of each algorithm.

‘Algorithm creation is an exact science.’ In what sense is this statement correct?

• There is only one solution to each problem.
• There are strict rules that, if followed, will allow the development of a correct solution.
• Correct algorithms are structured in a precise and logical manner.
• All of the other answers.

A data structure is available for access by all subroutines within a system. This data structure can be described as:

• a file.
• local.
• static.
• global.

A routine written specifically to test the operation of another routine is called:

• a function.
• a stub.
• a driver.
• a parameter.

Perform a desk check of the above algorithm with the data items 7, 2, 1, 5, 3, 8, 9. What is the output from the desk check?

• 7, 2, 1, 5, 3, 8, 9
• 1, 2, 3, 4, 5, 6
• 7, 2, 3, 5, 4, 8, 9
• 7, 2, 1, 3, 5, 3, 4, 8, 9

The best explanation of this algorithm is:

• A pre-test loop goes around 6 times. Each time a value is input, and the smaller of the value and the loop counter is output each time.
• A value is input within a loop that counts from 1 to 6. If the value is smaller than the loop counter then the value of the loop counter is output, otherwise the loop counter is incremented and the value input is output.
• A pre-test loop goes around 6 times. Each time a value is input, the loop counter is incremented and the larger of the value and the loop counter is output.
• A value is input within a loop that counts from 1 to 5. If the value is smaller than the loop counter then the value of the loop counter is output, otherwise the loop counter is incremented and the value input is output.