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CCNA knowledge points

Shulou Source: shulou.com Published: 2022-06-01 04:09:46 10月06日 Update

I. ISO's OSI seven-tier model

Why layer by layer and the function of each layer

II. TCP / IP protocol stack

Functions of TCP/IP layers, TCP principle, IP protocol

III. Principle of Ethernet

Ethernet transmission principle, 802.3 (MAC sublayer), 802.2 (LLC)

IV. IP address division

Subnetting, summary routing, variable length subnet mask (VLSM), classful inter-domain routing, classless inter-domain routing

Five. Cisco sets up basic management

Cisco devices start, store, and enhance security

VI. Principle of switch

Frame forwarding, MAC address tabl

Seven. Spanning Tree Protocol (STP)

STP principle, Root Bridge, Root Port, designation

Port aggregation (EtherChannel)

VIII. Virtual Local area Network (Vlan)

The role of Vlan, how to communicate between Vlan, VTP

9. Routing Protocol Foundation

Route classification, static rout

Advanced distance vector routing protocol-EIGRP

Principle, basic setting

11. Dynamic Link routing Protocol-OSPF

Principle, basic setting

XII. Wide area Network switching (WAN)

Point-to-Point Protocol (PPP), frame Relay

XIII. Access Control list (ACL)

XIV. Network address Translation (NAT)

Static nat, dynamic nat, PAT

XV. IPv6 Foundation

Sixteen. First hop routing redundancy

VRRP 、 HSRP 、 GLBP

Seventeen. Monitor the operation of the network

SNMP 、 syslog 、 Netflow