Changes to the system executive software shall require a __________ functional test of the system.

Changes to the system executive software shall require a __________ functional test of the system.

• A. 5%
• B. 20%
• C. 1%
• D. 10%

Answer: (D)

When you change the system executive software, you need to verify that the changes work as intended and haven’t introduced problems elsewhere. This is done through functional testing that targets a representative portion of the system rather than attempting to test every possible path. The idea is to strike a balance: enough coverage to catch typical defects caused by the change, while avoiding an exhaustive, time-consuming test effort. A moderate, well-chosen functional test scope ensures critical workflows related to the change are exercised and that interactions with related areas are validated. If you test too little, you risk missing defects that only appear when modules interact; if you test too much, you waste resources and delay deployment without significantly increasing confidence. By testing a practical, representative fraction of the system, you achieve meaningful validation of the change and maintain efficient use of time and effort.

When you change the system executive software, you need to verify that the changes work as intended and haven’t introduced problems elsewhere. This is done through functional testing that targets a representative portion of the system rather than attempting to test every possible path. The idea is to strike a balance: enough coverage to catch typical defects caused by the change, while avoiding an exhaustive, time-consuming test effort.

A moderate, well-chosen functional test scope ensures critical workflows related to the change are exercised and that interactions with related areas are validated. If you test too little, you risk missing defects that only appear when modules interact; if you test too much, you waste resources and delay deployment without significantly increasing confidence. By testing a practical, representative fraction of the system, you achieve meaningful validation of the change and maintain efficient use of time and effort.