How to Pass CCNA on Your First Attempt: A Realistic 60-Day Study Plan
How to Pass CCNA on Your First Attempt: A Realistic 60-Day Study Plan
如何一次性通过 CCNA 考试：一份务实的 60 天学习计划
If you’re studying for CCNA, you’ve probably seen the exam details by now. 170 minutes. Around 100 questions. Six domains covering routing, switching, security, and automation. Here’s what most guides skip: people who fail CCNA don’t fail because they’re not capable. They fail because they studied the wrong things, in the wrong order, without enough practice. This is the plan I’d follow starting today.
如果你正在备考 CCNA，想必已经了解了考试细节：170 分钟，约 100 道题目，涵盖路由、交换、安全和自动化等六大领域。大多数指南忽略了一点：考生挂科并非因为能力不足，而是因为学习内容有误、顺序不对，且缺乏足够的练习。以下是我从今天开始会遵循的学习计划。
Week 1-2: Build the Foundation Before Anything Else
第 1-2 周：打好基础，重中之重
Don’t touch OSPF or ACLs until these four are solid:
- OSI Model - know all 7 layers and what happens at each one
- IPv4 Subnetting - non-negotiable. You need to do this fast, in your head
- TCP/IP fundamentals - how packets travel from source to destination
- Ethernet and switching basics - MAC addresses, how a switch forwards frames
在以下四点扎实掌握之前，不要触碰 OSPF 或 ACL：
- OSI 模型：熟知所有 7 层及其各层功能。
- IPv4 子网划分：这是底线，必须做到心算且快速。
- TCP/IP 基础：理解数据包如何从源端传输到目的端。
- 以太网与交换基础：理解 MAC 地址以及交换机如何转发帧。
Subnetting shows up in roughly 15-20% of exam questions, directly and indirectly. Spend at least 5-6 hours on it before moving on. Use a site like subnettingpractice.com and drill until it’s automatic.
子网划分直接或间接地出现在约 15-20% 的考题中。在进入下一阶段前，请至少花 5-6 小时攻克它。利用 subnettingpractice.com 之类的网站进行练习，直到形成肌肉记忆。
Week 3-4: Routing and Switching Core
第 3-4 周：路由与交换核心
Once the foundation is solid, tackle these in order:
- Static routes - configure, troubleshoot, know when to use them
- OSPF single area - this is heavily tested. Learn hello packets, DR/BDR election, and neighbour states
- VLANs and trunking - access vs trunk ports, 802.1Q encapsulation
- STP - understand why it exists, how port states work, what BPDU does
- Inter-VLAN routing - router-on-a-stick and Layer 3 switching
基础稳固后，按顺序攻克以下内容：
- 静态路由：配置、排错，并了解何时使用。
- OSPF 单区域：这是重点考点。学习 Hello 包、DR/BDR 选举及邻居状态。
- VLAN 与 Trunk：Access 与 Trunk 端口的区别，802.1Q 封装。
- STP：理解其存在意义、端口状态工作原理及 BPDU 的作用。
- VLAN 间路由：单臂路由（Router-on-a-stick）与三层交换。
For each topic: read the theory, then immediately configure it in a lab. Don’t read three chapters before touching a command line. 每个主题的学习流程：先看理论，然后立即在实验环境中配置。不要在还没敲过一行命令前就读完三章书。
What Lab Tool Should You Use?
该使用什么实验工具？
Cisco Packet Tracer is free and covers most CCNA topics. Download it from Cisco’s NetAcad portal. For more realistic scenarios, EVE-NG is a better choice. It runs actual Cisco IOS images and behaves closer to production equipment - which is also closer to what you’ll see in the hands-on exam questions.
Cisco Packet Tracer 是免费的，涵盖了大部分 CCNA 主题，可从 Cisco NetAcad 门户下载。若追求更真实的场景，EVE-NG 是更好的选择。它运行真实的 Cisco IOS 镜像，表现更接近生产环境设备，也更贴近实操考试中的题目。
Week 5-6: Security, WAN, and Automation
第 5-6 周：安全、广域网与自动化
These are the topics people leave to last. Don’t.
- Security (about 15% of the exam): Port security, ACLs (standard vs extended), NAT/PAT, DHCP snooping, and dynamic ARP inspection.
- WAN concepts: PPP, HDLC, SD-WAN fundamentals, and VPN basics (IPsec vs SSL).
- Automation and programmability (about 10%): REST APIs, JSON, SDN concepts (control plane vs data plane), and Cisco DNA Centre.
这些是人们容易拖到最后才看的内容，千万别这样做。
- 安全（约占考试 15%）：端口安全、ACL（标准与扩展）、NAT/PAT、DHCP 侦听及动态 ARP 检测。
- 广域网概念：PPP、HDLC、SD-WAN 基础及 VPN 基础（IPsec 与 SSL）。
- 自动化与可编程性（约占 10%）：REST API、JSON、SDN 概念（控制平面与数据平面分离）及 Cisco DNA Centre。
Don’t panic about automation. The exam doesn’t ask you to write Python scripts. It tests whether you understand the concepts. 不必对自动化感到恐慌。考试不会要求你编写 Python 脚本，它只测试你是否理解相关概念。
Week 7-8: Practice Exams Only
第 7-8 周：仅进行模拟考试
Two weeks out: stop reading new material. Only practice exams and review. Take a full practice exam every two days. Scoring under 80%? Go back to every wrong answer and understand why it was wrong, not just what the correct answer was.
考前两周：停止阅读新材料，只做模拟题和复习。每两天进行一次全真模拟考。如果得分低于 80%，请回到每一道错题，弄清楚为什么错，而不仅仅是记住正确答案。
Common Mistakes That Cause Failures
导致失败的常见错误
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Watching videos without doing labs. Videos feel productive, but they aren’t enough.
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Memorising commands without understanding them. The exam tests your ability to interpret output.
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Skipping automation topics. 10% is a significant chunk of marks to give away.
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Using only one resource. Mix books, videos, and labs for better retention.
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只看视频不做实验：看视频感觉很有收获，但仅靠视频是不够的。
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死记硬背命令而不理解原理：考试会测试你解读输出结果的能力。
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跳过自动化主题：放弃 10% 的分数是非常不明智的。
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只使用单一资源：结合书籍、视频和实验，记忆效果会更好。
60-Day Timeline at a Glance
60 天时间表概览
| Week | Focus |
|---|---|
| 1-2 | OSI model, subnetting, TCP/IP, Ethernet basics |
| 3-4 | Static routing, OSPF, VLANs, STP, Inter-VLAN routing |
| 5 | Security topics, WAN concepts |
| 6 | Automation and programmability, full review |
| 7-8 | Practice exams, targeted weak-spot review |
| 周次 | 重点 |
|---|---|
| 1-2 | OSI 模型、子网划分、TCP/IP、以太网基础 |
| 3-4 | 静态路由、OSPF、VLAN、STP、VLAN 间路由 |
| 5 | 安全主题、广域网概念 |
| 6 | 自动化与可编程性、全面复习 |
| 7-8 | 模拟考试、针对性弱项复习 |
CCNA is genuinely passable with the right approach. The candidates who fail usually rushed through the first two weeks. Master subnetting early. Lab every topic you read about. Don’t skip automation. Good luck with the exam.
只要方法得当，CCNA 完全可以通过。那些挂科的考生通常是在前两周过于匆忙。尽早掌握子网划分，为你读到的每一个主题做实验，不要跳过自动化。祝你考试顺利。