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You are developing a program to test the wireless network for a college campus - NSC Information Technology - Question 4 - 2023 - Paper 1

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You are developing a program to test the wireless network for a college campus. The area of the campus has been broken up into a grid where access points can be adde... show full transcript

Worked Solution & Example Answer:You are developing a program to test the wireless network for a college campus - NSC Information Technology - Question 4 - 2023 - Paper 1

Step 1

Button [4.1 - Display]

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Answer

To display the arrNetwork, follow these steps:

  1. Clear the redQ4 rich edit.
  2. Initialize the output string with headings for the rows and columns.
  3. Loop through iRow from 1 to 5:
    • For each iRow, loop through iCol from 1 to 6 to read values from arrNetwork.
    • Concatenate each item at arrNetwork[iRow, iCol] to the output string.
  4. Display the output string in the redQ4 component.

Step 2

Button [4.2 - Add access point]

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Answer

To add an access point, perform the following:

  1. Extract the row and column values from the spin edits sedQ4_2_Row and sedQ4_2_Col.
  2. Initialize a counter for access points in the row.
  3. Loop through iCol from 1 to 6:
    • Check if arrNetwork[iRow, iCol] is 'A'. If true, increment the counter.
  4. If the counter is 2 or less and if arrNetwork[iRow, iCol] is not 'A':
    • Add 'A' to arrNetwork[iRow, iCol] and display a success message.
  5. However, if there's already an access point in that location, display a message indicating that.
  6. If the row contains more than two access points, display a related message.

Step 3

Button [4.3 - Coverage]

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Answer

To determine coverage:

  1. Loop through rows (iRow) from 1 to 5:
    • For each row, loop through columns (iCol) from 1 to 6.
    • If arrNetwork[iRow, iCol] equals 'A', apply the coverage as follows:
      • Loop for iRow from iRow - 1 to iRow + 1 and for iCol from iCol - 1 to iCol + 1 to check surrounding blocks.
      • Mark locations covered by this access point with an asterisk (*).
  2. Finally, display the updated arrNetwork after all access points have been marked.

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