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