Level 3 BTEC national extended diploma - D*D*D* 17/18 units. This is a practical work-related course, with assignments based on real life problems that occur within the world of IT and Business. Year 1 - BTEC Level 3 Extended Diploma in IT (Networking and Systems Support) (180 Credits) Unit 5 – Managing Networks Unit 7 – Organisational Systems Security Unit 14 – Event driven Programming Year 2 - BTEC Level 3 Extended Diploma in IT (Networking and Systems Support) Unit 9 – Computer N...