1. Which of the following statement is incorrect?
   1. When billing is performed, cash receipt event data needs to be updated
   2. When goods are received, purchase order master data needs to be updated
   3. When goods are shipped, inventory master date needs to be updated
   4. When a purchase order is created, inventory master data needs to be updated
2. Which of the following statement is incorrect about the IT department and IT general control?
   1. Policies and compliance officer reports to the security supervisor
   2. Mirror site is usually more expensive to establish than a hot site
   3. Intrusion-detection systems (IDS) actively block unauthorized traffic following rules specified by the company
   4. Post-implementation review is a key control of the testing quality control analyst