I m new in the community. I m familiar with basics cisco Routing and Switching but I m not certified yet. I plan to pass my certification soon (ICND1 and 2). In the ICND1 programm, I don’t see IPV4 subnetting (VLSM, CIRD, IP subnetting…) in the chapter “Introduction to Internet Protocol Version 4 (IPV4)”. Is this no loger part of Cisco ICND1?