目录
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
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 characteristicsUnderstand the model of host-to-host communicationDescribe the features and functions of the Cisco Internetwork Operating System (IOS®) softwareDescribe LANs and the role of switches within LANsDescribe Ethernet as the network access layer of TCP/IP and describe the operation of switchesInstall a switch and perform the initial configurationDescribe the TCP/IP Internet layer, IPv4, its addressing scheme, and subnettingDescribe the TCP/IP Transport layer and Application layerExplore functions of routingImplement basic configuration on a Cisco routerExplain host-to-host communications across switches and routersIdentify and resolve common switched network issues and common problems associated with IPv4 addressingDescribe IPv6 main features and addresses, and configure and verify basic IPv6 connectivityDescribe the operation, benefits, and limitations of static routingDescribe, implement, and verify Virtual Local Area Networks (VLANs) and trunksDescribe the application and configuration of inter-VLAN routingExplain 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) workConfigure link aggregation using EtherChannelDescribe the purpose of Layer 3 redundancy protocolsDescribe basic WAN and VPN conceptsDescribe the operation of Access Control Lists (ACLs) and their applications in the networkConfigure Internet access using Dynamic Host Configuration Protocol (DHCP) clients and explain and configure Network Address Translation (NAT) on Cisco routersDescribe basic Quality of Service (QoS) conceptsDescribe 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 virtualizationIntroduce 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 toolsDescribe the management of Cisco devicesDescribe the current security threat landscapeDescribe threat defense technologiesImplement a basic security configuration of the device management planeImplement 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