有些朋友问网络工程师成长日记小编问到CCNA一般要学习多长时间呢，学习的难度怎么样

一 思科认证CCNA考试费是多少

思科的CCNA考试现在的编号是200-301，考试费用是195美元，

考试的大纲大概是这样的：

• Identify the components of a computer network and describe their basic characteristics
• Understand the model of host-to-host communication
• Describe the features and functions of the Cisco Internetwork Operating System (IOS®) software
• Describe LANs and the role of switches within LANs
• Describe Ethernet as the network access layer of TCP/IP and describe the operation of switches
• Install a switch and perform the initial configuration
• Describe the TCP/IP Internet layer, IPv4, its addressing scheme, and subnetting
• Describe the TCP/IP Transport layer and Application layer
• Explore functions of routing
• Implement basic configuration on a Cisco router
• Explain host-to-host communications across switches and routers
• Identify and resolve common switched network issues and common problems associated with IPv4 addressing
• Describe IPv6 main features and addresses, and configure and verify basic IPv6 connectivity
• Describe the operation, benefits, and limitations of static routing
• Describe, implement, and verify Virtual Local Area Networks (VLANs) and trunks
• Describe the application and configuration of inter-VLAN routing
• Explain the basics of dynamic routing protocols and describe components and terms of Open Shortest Path First (OSPF)
• Explain how Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP) work
• Configure link aggregation using EtherChannel
• Describe the purpose of Layer 3 redundancy protocols
• Describe basic WAN and VPN concepts
• Describe the operation of Access Control Lists (ACLs) and their applications in the network
• Configure Internet access using Dynamic Host Configuration Protocol (DHCP) clients and explain and configure Network Address Translation (NAT) on Cisco routers
• Describe basic Quality of Service (QoS) concepts
• Describe the concepts of wireless networks, which types of wireless networks can be built, and how to use Wireless LAN Controllers (WLCs)
• Describe network and device architectures and introduce virtualization
• Introduce the concept of network programmability and Software-Defined Networking (SDN) and describe smart network management solutions such as Cisco DNA Center™, Software-Defined Access (SD-Access), and Software-Defined Wide Area Network (SD-WAN)
• Configure basic IOS system monitoring tools
• Describe the management of Cisco devices
• Describe the current security threat landscape
• Describe threat defense technologies
• Implement a basic security configuration of the device management plane
• Implement basic steps to harden network devices

二 思科认证CCNA一般学习多长时间

CCNA一般是学习时间差不多2-4周的时候就可以了，但是因为每个人做实验掌握技术的快慢不一样，这样导致的是CCNA在实际学习的时候每个人的时间是不一样的，通常就是2-4周的时间基本上就够了，如果特别慢的话，一般就是1-2个月就能学习会的额

三 思科认证CCNA考证书容易吗，能找到工作吗

CCNA的考试一般都是要看题库的，所谓的题库就是真是的考试题的模拟题库了，考试的时候只要你把这个模拟题库看的非常熟练，考试自然也就可以通过了