You should master the following key points when studying this HCDA H12-211-ENU exam:

IP Network Basics

• Datacom basics
• Basic network concepts, IP network architecture, standardization organizations and protocols
• OSI and TCP/IP protocol models, functions at each layer, and packet encapsulation
• ARP and RARP principles
• TCP/UDP principles
• IPv4 subnetting
• Principles of common application layer protocols
• Principles and application of common tools such as Ping, Tracert, FTP, and Telnet

LAN Technologies

• Basic principles of the Ethernet technology and switches
• Basic principles of VLAN, STP, and VRRP and their implementation in VRP
• How a small switching network is constructed by using VLAN, STP, and VRRP technologies and Huawei switches

WAN Technologies

• HDLC, PPP, and Frame Relay and their implementation in Huawei products

Routing Technologies

• Static routing protocol principles, RIP principles, and OSPF principles, and their implementation in VRP
• How a small routing network is constructed by using routing technologies and Huawei routers

Network Security

• Network Security
• ACL and NAT principles and configuration of ACL and NAT in Huawei firewalls
• How network security is ensured by using network security technologies and firewalls

Product Knowledge

• VRP features, operations, and maintenance
• Features of Huawei routers and switches and their implementation in IP networks