What is the definition of ccna in ccna job?

CCNA mainly includes the following four parts:

1. The basic principles of the network. This part contains a lot of trivial knowledge points. At the beginning, it will feel very boring. There is no way to do it. You must be mentally prepared for technology.

2. Layer 2 switching technology, this part mainly introduces the switching principle and networking mode;

3. Three-layer routing technology chapter, mainly explaining the principles and configurations of common routing protocols;

4. Network application, including DHCP, NAT, ACL, etc.

Therefore, CCNA system is very obvious: basic principles - LAN - WAN - practical application.