What Is CCNA Certification?

The full name of CCNA is Cisco Certified Network Associate, which translates to Cisco Certified Network Engineer, and Cisco (Cisco) is the world's largest network equipment company. According to the IT certification exam resource network, CCNA is the primary technical certificate in the Cisco certification system. Obtaining CCNA certification signifies the ability to install, configure, run medium-sized routing and switching networks, and troubleshoot. CCNA is a Cisco after-sales engineer certification, which mainly involves the basics of network protocols and the basic configuration of Cisco router switches.

CCNA certification

The full name of CCNA is Cisco Certified Network Associate, which translates to Cisco Certified Network Engineer, and Cisco (Cisco) is the world's largest network equipment company. According to the IT certification exam resource network, CCNA is the primary technical certificate in the Cisco certification system. For the introduction of the Cisco certification system, please refer to the introduction of the "Cisco Certification System Encyclopedia".

Obtaining CCNA certification marks the ability to install, configure, run, and troubleshoot medium-sized routing and switching networks. Become a CCNA Cisco Certified Network Engineer who has established a connection to a remote site through a WAN, eliminating basic security threats, understanding

The main contents of CCNA training include:

1. Network foundation: OSI seven-layer reference model; data encapsulation and decapsulation; Ethernet; TCP / IP protocol, TCP / IP protocol architecture, IP address classification, subnetting, ARP protocol, TCP protocol, UDP protocol.

2. Routing: routing principle; static routing, default routing; RIP protocol, OSPF protocol, EIGRP protocol. Application of access control list, basic access control list, extended access control list, named access control list.

3. Switching: the working principle of the switch, the establishment of the MAC table; static VLAN, dynamic VLAN; VLAN relay, VTP protocol; communication between VLANs; spanning tree protocol STP.

4. Remote access: PPP protocol; Frame Relay Frame-relay; Network Address Translation NAT.

5. Wireless local area network WLAN: The working principle of wireless local area network CSMA / CA; WLAN type; WLAN standard; WLAN security (authentication, encryption).

6. Comprehensive experiment: build a network of small and medium-sized enterprises.

CCNA certification:

CCNA certification marks the ability to install, configure, run, and troubleshoot medium-sized routing and switching networks. CCNA-certified professionals have the relevant knowledge and skills to establish connections with remote sites over a wide area network,

Eliminate basic security threats and understand the requirements for wireless network access. CCNA training includes (but is not limited to) the use of these protocols: IP, EIGRP, Serial Line Interface Protocol, Frame Relay, RIPv2, VLAN, Ethernet, and Access Control List (ACL)

With CCNA + courses, you can complete the following tasks:

When to use hubs, switches, and routers

Confirm ports, protocols, addresses, and connectivity with Cisco software

Interconnect switches and routers as required

Configure switches and routers to support LAN and WAN services

Setting up IP subnets for effective network management

Control access to network segments or network resources by configuring access lists

Confirm that switches, routers, and their configured network services are functioning as expected

Determine the cause of the network failure and solve it

Have a certain analysis and solution ability for some actual engineering cases

1) Cisco network foundation and commonly used network protocols

2) The establishment of virtual local area network and the comprehensive use of routing and switching