11 Pages of Free CCNA Command Cheat Sheets (VLANs, OSPF, ACLs, NAT, IPv6 & Troubleshooting)

I wanted to share a free 11-page CCNA command reference for anyone studying for the exam or practicing networking labs.

The PDF covers Cisco CLI commands across VLANs, routing, OSPF, IPv6, ACLs, NAT, and troubleshooting.

My recommendation is to use these notes alongside your labs rather than trying to memorize every command. Configure a feature, check the output, then deliberately break something and troubleshoot it.

Free PDF (direct download, no signup required):

https://dl4.dynamips.store/reddit/ccna-cheat-sheets.pdf

Full disclosure: This resource is provided by Dynamips, which I'm affiliated with. It's completely free, with no registration or email required.

Hope it helps anyone working toward their CCNA. If you notice any mistakes or think an important command is missing, I'd appreciate the feedback.

I'm a network engineer, 20+ years doing this for a living, and I'm just now finishing my CCNA. Don't laugh.

Problem was every lab setup I tried needed my laptop, or an install, or a license key and a blood oath. I study in like 20-minute chunks, mostly on my phone. So I just built the thing I wanted.

It's called CLiDK (clidk.com). Runs in the browser, nothing to install, no signup. It's a CLI that actually acts like IOS — modes, abbreviations, tab, the ? thing, all of it. You type, it grades you. 55 graded labs: CCNA follows Jeremy's IT Lab order (his videos are free, mine are all original), plus CCNP and CCIE scenario tracks, a sandbox where you build your own setup, and a daily lab.

Fastest way to see it: Lesson 0 on the homepage — ssh in, configure an interface, ping a PC, about three minutes, nothing to install.

Right now it's beta so everything's unlocked and free. That's temporary — when beta ends, the paywall goes up and what's free is the first 8 CCNA labs and the daily lab, same as always. I'm not selling anything yet. What I actually need is people to break it. If the IOS does something IOS would never do, if the grader marks you wrong when you're right, if a command is missing — I want to hear it. I'll fix stuff in the open right here in the thread.

When I do turn the paywall on (not yet), beta testers get the founding thing locked in, $49 a year for life, first 200.

Anyway. Tell me what I screwed up. Please try to break it =) There's an insect report section too, if you happen to find anything I haven't.

Thanks for looking! Honest feedbak welcome.

https://clidk.com/

Do you have to have all the IEEE standards (802.1…) memorized for the Ccna?

Gracias

hey people, lemme know if this is completely offtopic, but

(didn't know where else to post this if not this sub as nobody else would get it better than u guys)

im looking for movie/serie/anime recs to stay motivated and in the vibe while preparing for ccna and eventually ccnp

the closest i've come to is the series Mr.Robot, can u guys suggest me more of this genre or even closer to networking,

thanks

Hi guys ,

I know there a a few commands to save your configuration so I always use wr so if I use copy running-config startup-config following wr (write memory) just to make sure it’s saved would that that be an issue ?

I'm currently taking the Cisco Networking Academy CCNA: Introduction to Networks (ITN) course.

I want to know whether completing the Course Final Exam is enough to receive the course certificate, or if I also need to complete the Practice Final Exam and the ITN Final Packet Tracer Assessment.

The practice final exam and the actual course final exam appear as separate activities on the platform.

Does anyone who has completed the course know which activities are mandatory to receive the certificate? Is the practice exam optional, or does it need to be completed as well?

Thanks!

Hi, planning to get certified, just wondering is Jeremy's IT Labs enough or do you have any recos?

"Hi, I'll get straight to the point. I'm currently scoring a bit above 80 on my Boson exams, and I genuinely understand the material. The mistakes I do make are usually just from getting distracted or because in fact, i didnt know those details and had to study from them. I've been studying with flashcards and practicing a bit with sh command outputs using resources outside of Boson. i know subnetting almost by memory and im comfortable with subnetting but not at like lightning speed or something.

While I do very well on Boson, I'm absolutely terrified of failing my first exam attempt. I don't know what mindset to have: should I just go for it with the mindset of "well if i fail i know now what exactly to study"?, or should I wait until I literally know almost everything that could possibly be on the test?"

i mean, how you guys passed the test? how were you doing during the practice compared to the exam, did you guys failed some labs like i did and had to do them over and over and still failed some questions or concepts? i still have the feeling that some questions might be super specific and that will make me fail

A router learns the same destination network through three different sources:

O 10.20.30.0/24 [110/20] via 192.168.1.1

D 10.20.30.0/24 [90/30720] via 192.168.1.2

S 10.20.30.0/24 [1/0] via 192.168.1.3

Which route will the router install in the routing table?

A. OSPF
B. EIGRP
C. Static route
D. All three

Post your answer below and explain why.

No answer in the post. Let’s see who remembers how administrative distance affects route selection. 👀

I’m also building Open Intelligence University, a free CCNA 200-301 learning project with lessons, Packet Tracer labs, troubleshooting exercises, and quizzes.

Learn it. Build it. Break it. Fix it. Verify it.

Free CCNA course:
https://www.youtube.com/@openintelligenceuniversity

Hi folks, i've been studying for a while now, i have made tons of exam simulations but i feel that i have already learned the answers, i also did a home lab and lots of packet tracer practices, but i don't feel ready yet, so i hope you can ask me stuff you are having a hard time to learn so i can answer as a practice for me. Thanks for reading.

My original plan was to take the old exam by the end of January, but at this point in time, I’m worried I won’t be able to make it given my life circumstances and limited study schedule.

I heard the new exam is going to be harder, but honestly what worries me more is the lack of study materials. I can’t just wait until summer of 2027 for someone to come out with updated materials and practice questions.

I’d really appreciate some advice on what to do next. I’m still going to try to study for the old exam, but realistically I don’t know how successful I’ll be.

I’m studying for the cert but I just have a random question about the exam format. I understand that the exam has MCQ questions, drag and drop as well as labs.

Will the labs in the exam need us to configure physical devices (switches, routers, servers, etc.) or will I only have to configure them in Packet Tracer? I’m already quite confident in doing Jeremy’s Labs but I’m just afraid that I’ll be nervous if I have to configure them physically as I have no Cisco devices at home.

Thank you for any help 🙏🏻

Hiya all!

Currently got my CCNA booked for the end of November. My boson scores are averaging around 70% recently and I feel pretty confident for next month.

Is there anything you lot would recommend focusing on? From checking here recently, people seem to be getting a lot of wireless questions so want to ensure I'm best prepared.

I mainly use Boson and CBT Nuggets, with Claude analysing my Boson results and advising on focus points, which does seem to help.

Thanks,

Kian

hey hows it going I'm starting my IT journey and i want your guys opinion on the CCNA,
- how tough it is?
- what course to follow (currently I'm watching 3 people David Bombal Tech, NetworkChuck, and Jeremy's IT Lab, but I cant stand Jeremy's IT Lab he feels slow in my opinion )
- how can i gain more experience (I have packet tracer installed)
- how did you pass ?

thank you all who responds

انا تخرجت باوقست 2025 واخذت شهادة net+ ، ccna
وللأن ماحصلت وظيفه ودي استغل وقتي اطور مهاراتي ايش تنحصوني فيه ؟ مع العلم ان دراستي لـccna كلها كانت نظريه ماحس عندي خلفيه كافيه ، هل ارجع ادرسها بفهم ؟ او ابدا اسوي مشاريع

I'm going to start preparing for the CCNA 200-301 exam, but do you think I have enough time until January? With Jeremy's IT LAB playlist? I don't have any other resources. Do you advise me to take this version or take my time studying it and take the new version that will start in February 2027?

I want to be in the networking field, so I want to know which linux segment I need to learn that feels relevant to networking, like for the server management and other stuff. Any guidance??

Hello all!

I have zero experience in IT except way back when we need to build our own computers to play counter strike a half-life mod and set up a LAN with linksys switches. Also just got my Net+ Sep of last year.

Last October, I started JITL and I didn't finished consuming all of the material. I quickly skimmed through the parts that over lapped with net+ and focused on the new to me stuff.. stuff that required configuration! dynamic routing protocol, ether channel, trunking etc..

I was burnt out from studying.. I haven't stopped consuming networking content since i started the net+ journey beginning of 2025. So, I decided to take a break and get hands on around feb of this year. I converted a old computer into a hypervizor to play around with CML. I tried applying what I learned but honestly without heavy AI intervention I was having serious trouble. This took roughly 4-5 months away from my study time.. but, it did show me what I lacked!

In July, I decided to purchase JITL practice exams and Boson exsim and netsim. Took the advice of many, didn't blow through the exams since I wanted test myself incrementally. The first exam from jeremy landed at 45%. HUGE let down!

I decided to carved out about 2hrs/day to configure boson and Jeremy's practice labs and take practice tests when I felt ready.. "I never felt ready"

I tried to space boson tests 2-4 weeks apart and my scores were: 68%, 61%, 72%,73%,66% my test order was A, B, D, E, C .

jeremys test scores: 45%, 57%, 64%

last jeremy test taken on 10/13 - 64%

last boson test taken on 10/15 - 72%

I felt extremely bummed and nervous beginning of October and i only had roughly 3 weeks. So I went all out from oct 1st to 16th. 9-11am labs, 3-6pm more labs + materials. Practice test days I would wake up at 6am and take my test around 8-9am to mimic my brain readiness. My scores where not even close to passing on boson or jeremy. I was only slightly confident after the last test on boson where i score 3/4 sim but still at 72%.

Final results from CCNA 10/19 6 labs and 58 mcqs

Automation : 90%

Network Access: 75%

IP connectivity: 92%

IP services: 70%

Security fundamentals: 47%

Network fundamentals: 70%

Boson and Jeremys practice tests is tougher than the real thing. I took every wrong question , guesses fed it to claude and prompted to make the same style of MCQs. Also had claude mimic routing table and acl configs as those were one of the most time consuming questions for me to read through.

TLDR: don't freak out because of your boson scores! I never had a close score and I was freaking out till about few days before the test. Keep pushing forward in every domain and keep rotating back to the labs. It is a lot of info, but once you can configure all the topics without minimal help it starts to become easier.

Common questions are

000BASE-T or 10GBASE-T

Which pair used to transmit or receive ?

1000BASE-LX-SR..etc** maximum cable length?

IEEE standards such a confusing

CCNA Subnetting Challenge — Can you solve this without a calculator?

You’re given the network:

172.16.40.0/24

You need to create subnets for:

• Engineering: 50 hosts
• Sales: 25 hosts
• HR: 12 hosts
• Management: 6 hosts

Using VLSM, which set of prefix lengths would meet the requirements while wasting the least address space?

A. /26, /27, /28, /29
B. /25, /26, /27, /28
C. /26, /26, /27, /29
D. /27, /28, /29, /30

Post your answer below and explain how you worked it out.

No answer in the post — let’s see who can solve it manually. 👀

I’m also building Open Intelligence University, a free CCNA 200-301 learning project with lessons, Packet Tracer labs, troubleshooting exercises, and quizzes.

Learn it. Build it. Break it. Fix it. Verify it.

Free CCNA course:
https://www.youtube.com/@openintelligenceuniversity

Hi everyone,

I’m planning to take the Cisco CCNA (200-301) exam and was wondering if there are any ways to get a discount voucher or promo code.
Does Cisco offer any discounts through promotions, Cisco Networking Academy, or other programs?
I’m based in Germany, so I’d appreciate any tips or recommendations.

Thanks in advance!

I want to pass a certification , to help me get some jobs , i am a cybersecurity engineer , and i was wondering if the CCNA is a good thinng to pass , or there is better alternatives , if so , can you please tell me where to study for it , thanks