Cisco CCNA Certification exam domains

Networking Fundamentals : The networking Fundamentals is the first domain of the CCNA certification exam. It carries a weightage of 20% in the exam. The following subdomains are included in it:
Explain the importance and uses of networking devices like routers, switches, hubs, etc.
Types of network topologies used and types of cabling
TCP and UDP protocols
IPV4 and IPV6
Wireless principles
Network Access : The Network Access domain also carries the weightage of 20% in the exam. The domain includes the following subtopics:
VLANs (Virtual Local Area Network)
Interswitch connectivity
Cisco Discovery Protocol and LLDP (Link Layer Discovery Protocol)
Wireless architectures, RSTP (Rapid Spanning Tree Protocol), and WLAN (Wireless Local Area Network) Components
IP Connectivity : The IP Service domain carries a weightage of 25% in the exam. The domains include the following subtopics:
Routing protocol code- you will get familiar with the codes for connected routes, static routes, local routes, and OSPF routes
Interpreting components of the routing table
Knowing how a router makes a forwarding decision by default, and FHRP (First Hop Redundancy Protocol)

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