Cisco has transitioned to a new certification program called the Cisco Certified Network Associate (CCNA) program, which consolidates the ICND1 and ICND2 exams into a single exam known as the CCNA 200-301 exam.

To prepare for the CCNA 200-301 exam (which includes the topics previously covered in ICND1), you can follow these general guidelines:

Networking Fundamentals: Understand the basics of networking, including OSI and TCP/IP models, IP addressing (IPv4 and IPv6), subnetting, and the fundamentals of Ethernet.

Network Access: Learn about LAN switching concepts, such as VLANs, STP, and EtherChannel. Also, study the basics of configuring and verifying Cisco switches.

WAN Technologies: Get familiar with WAN technologies like PPP (Point-to-Point Protocol), HDLC (High-Level Data Link Control), and various encapsulation methods.

IP Connectivity: Explore IP routing concepts, including static and dynamic routing protocols like RIP, OSPF, and EIGRP. Learn how to configure and verify routing on Cisco routers.

IP Services: Familiarize yourself with DHCP, NAT, and ACLs for controlling network traffic.

Network Automation and Programmability: Gain a basic understanding of network automation and programmability using tools like Ansible and Python scripting.

Infrastructure Security: Study security concepts related to securing network devices, access control, and securing network traffic.

Infrastructure Management: Learn about network management protocols like SNMP and Syslog, and understand device monitoring and management.