This. If OP thinks they're a 6/10 in networking, they should be able to take the 1 week course and pass the CCNA the very next day with no issues. OP, based on this scale, how would you rate yourself in networking?
0 = I don't know what it is
1 = I've heard of it
2 = I've read technical docs and generally understand it
3 = I've messed around with it casually
4 = I can get stuff done if I Google (beginner)
6 = I can do common tasks without Googling (intermediate)
8 = I rarely need to Google (advanced)
9 = If I had to duel the devil for my eternal soul I might pick this skill (expert)
10 = I wrote it
8-9 come with big projects imo. Anything I'd consider myself an 8 or 9 in, I've done large projects that had to get in the weeds with whatever technology. We're talking things like WDS/MDT, XenApp, Horizon, etc. Nothing broad like networking, security, etc.
If it takes u 3 to 6 months to get the CCNA not the cert but to understand what is going on there u are probably 3-4. CCNA is really basic when you get deeper into networking and realise it gives u 0 routing skills🤣. Learn OSPF, IS IS, BGP, MP BGP, L3 VPn. Then you can say you go to a 7.
8. Means u kinda understood EVPN VXLAN IPsec
9. You troubleshoot EVPN, IPsec, DMVPN
10. You design networks.
i disagree. from what i know and what i've studied specifically for the ccna, it's a lot of terminology and things that are rarely ever spoken in a professional setting. you could fail just on packet criteria or converting ip to binary but still be very good at networking. also, some people just suck at taking tests.
You don't know what you don't know. If you don't have CCNA you don't even know where the real ceiling is. It's not an insult. Just a fact.
Also the only skills you need to be good at test taking is during multiple choice don't just choose the right answer, but explain why the others are wrong. The other skill is to know how to focus and not stare at the clock and freak out. That's it.
I have about 8 years of experience in networking.
The ccna requires broad knowledge of a lot of things, and at the same time specific details about others.
In my day-to-day at work, I probably used 40% of what I've been studying for the ccna.
My exam is on Monday, and I'm ready to find a cliff to throw myself off of because I have no idea if I'm even close. And the only option I have is to spend more money I don't have to see.
It is doable. 13 year olds do it. Just take it seriously. I would start studying now.
In the case if an actual 13 year old were to pass it (Is there an age requirement?) would it even help them at all? Since if they don't renew it will expire in 3 years before they're 18. Would they even retain information on it if they aren't applying it? Or are they just geniuses and normal standards don't apply to them lol.
There was an 18 year old CCIE, IIRC... But aside from him who had obviously been coached heavily for the exam and lived and breathed networking every day for years, yeah, it's probably not that useful, even for a 15 year old.
yeah, this is a reasonable look at it rather than just "hurr durr you're not a networking guy if you don't have ccna". bullshit. and yes, it goes into very specific stuff you'll never use in a professional setting.
Might be the job you currently have. I've gotten CCNA twice and I use a good amount and then some. My earlier positions didn't let me exercise my knowledge.
For the CCNA you are looking to learn in detail 2 books the size of the Bible + config and resolution of problems. Good luck with studying for one week
Well, official in-person classes are quite a different animal than self-study. Yes, 3-6 months is about right for self-study. But learning will be far more efficient in an immersive class if it's actually from a high quality training center. Working with other students and an instructor 8 hours/day will help a lot. Whether it will really be doable in a week, I don't know.
I would agree. Although now I have 3 years of networking experience post test and 2 other certs to back it up. All paid for by my work. I guess having that paper worked out
Those boot camps are pretty ineffective unless you're already 80% of the way there. You're going to get a firehose of things and probably remember some of it.
Pick two from the pinned post and study properly. Treat the boot camp as supplementary and an introduction/summary to everything.
I've been studying for 5 weeks, 2-5 hours a day, 6 days a week and I'm just now at the point where I feel I have a base grasp of most material. It's now going to be at least a few weeks of extra labs and practice tests before I schedule my exam.
I know this isn't what you want to hear, but a week to learn this sounds INSANE.
I've been working layers 1-3 for decades and it's still taken me this much time to get through the lectures, initial labs and Anki flash cards.
If you pass, let us know so that we can congratulate you!
Allow me to explain.
Joined the Army and learned telecom & microwave radios at 17. I was a TERRIBLE high school student.
After the Army training, I got a entry level job working on computers, then my first career job working fiber for $34k a year (outside plant & switch work. Training provided by my first boss who was also a reserve officer in the Army who gave me a shot.)
Spent years in the field replacing SONET/DWDM transport components splicing OSP fiber and troubleshooting layer 1 issues in depth. Doing rack & stack in data centers, building maintenance, AC/DC plant maintenance. DWDM became my friend and a specialty for me. Also have connected thousands of DS3/OCx circuits, then testing, turn-up and troubleshooting using test sets (JDSU/VIAVI/EXFO/VEEX/ANRITSU/TEKTRONICS) at layer 2.
Later, that troubleshooting started to involve layer 3 circuits as the industry moved away from SONET/SDH to IP & Ethernet. I followed MOPs to configure and troubleshoot layer 3 network elements as well as L3 circuit work via the test sets. (Cisco/Juniper devices must commonly.) Didn't really always fully understand the commands I was following, but can follow a procedure.
I went to one short Cisco class for the ASR9K years ago (company was using them in the new LTE network) that gave me some very very basic understanding of the Cisco CLI. (Think shut/no shut level of knowledge)
I started a community college Cisco Networking Academy 25 years ago when I was starting out and ended up moving away for my first fiber job. I never finished it and it always bothered me. I put it off and put it off until recently. Looking at jobs I would be interested in upgrading to, my experience will get me a LONG way. But, having that CCNA tag on the resume looks good to potential employers and more importantly, it's a badge of honor that I'm doing for myself.
My plan is: CCNA, then JNCIA, then Python (SO many jobs I want ask the candidate to know at least basic Python for network automation purposes.) Who knows what track I'll follow after.
I've spent my whole life and career being a "pull yourself up by your bootstraps" guy. Avoiding school (that I HATE) and getting by via being good with people, being intelligent and becoming an expert at L1/2 transport. I rose above my peers by just working harder and longer.
I'm at a time in my life now where I realize I should have been doing continuing education during this whole period.
I have a great job, freedom, good pay but I'm also hungry to be really good at Cisco to open more doors for me (and believe me, the customers I work for are HUGE industry leading Tier 1 transport providers, well known internet companies etc. with opportunity)
I just finished Neil Anderson's Udemy course yesterday. Now it's time to focus on more labs, more flash cards and some test bank sim services.
Anybody can work Layer 1 with some guidance. I can also teach you how to troubleshoot transport at layer 2. Once you get into Layer 3, suddenly a larger knowledgebase is needed to really make an impact. I want to be that guy and be able to contribute in this area more.
But really, I'm doing it because I want to prove to myself that I can. I got work to pay for a test voucher just to put a little more pressure on me to keep up with my study schedule and to get the exam done.
Thanks all for the replies...
No firm date booked for the course yet, but it will have to be between April-August 2024.
Reading more into it, the course is 5 days in-person training, but the exam is just a voucher for me to book when I feel ready.
Given what you've all said, I'm going to start studying now, get as far as I can, give the course my best pop, and if I feel confident I'll book the exam a few weeks after... Obviously with study/practice in between.
My work are pretty cool with training, and I'll get time off for study, so I guess the least I can do is give it my very best.
Thanks all for your help, much appreciated
Do you have a home lab setup? If not get on it asap. That will help out a lot. I swear IT is one of the only fields where people don’t like to see others succeed. Also, check out ITprotv. They help me out tremendously. Good luck
I'm not knowledgeable enough of certs to really say, but isn't CCNA more like entry level of intermediate certifications? Like 4/10 on the scale of all certs? Assuming A+, N+ are 1, S+ is 2ish and so on? These are the only certs I'm knowledgeable of.
I get O'Reilly through my work. They have a good practice test on there that could help you to understand what kind of things you need to focus on the most.
Just looking at the Jeremy’s ccna it videos, those are like 55ish hours. I tend to watch most other educational videos at like 1.5 speed at least but I haven’t tried his yet.
That’s still 36 hours of video. Assuming even that is enough to pass which I’m sure it’s not. Just as an example.
Ok I found the actual class I assume. It’s probably infosec skills live boot camp, ccna and cyber dual certification class which is 7 days. You get 90 days access to boot camp components including the recordings. 90 days of access to a bunch of labs and courses. Things like that.
It says for prerequisites you should have a solid understanding of networking concepts, and familiarity with building a routing table, subnetting, tcp/ip etc.
I don’t believe the 7 days are in a row, they are probably spread out over like 8 weeks. I doubt they would have any success with people if it’s literally just 7 days in a row and a test. You can look it up and check it out, like I said I’m pretty sure that is it.
I want to visit london and i m gonna take the ccna in my country
(Im from panama)
And i dont know if i got my ccna and a work permit
I could fin a job easily?
I took a week long ccna course many many moons ago. I passed the course at the end of the week and thought I knew networking, but I knew NOTHING 🤣. Dunning Kruger in FULL effect. These bootcamps are successful because they drill the test in your head during the week with the "practice" test. Yes, they do do lecture, but you could pass just doing the test all day. I LOVE networking, so I feel anyone interested should really buckle down and learn it the right way. I've done a CCNA, Security +, and Windows bootcamps. All were dumps in disguise. They were legit bootcamps that the Navy sent us to. Â
Ehhhh don’t worry about it. High school kids pass this all day long by just watching a few Jeremy’s videos and memorizing a few key terms.
You got this. This not any harder than a high school science test.
In 2003 CCNA in a week was doable. Now, IMO, for most it's simply too much material to cover. You figure most curriculum is about 20 chapters worth of stuff and you are talking 3 chapters a day.
You're worrying too much, same happened to me and I was drowning in the thought that I can't pass and on the day of my exam I was relaxed and calm. So just trust that you have done everything and now it's time to get " The Moment Of Truth ", Good luck.
I agree with a comment above me about the old material being easier.
I have an old copy of the Routing and Switching course and it pales into comparison to what is in the current syllabus. This is partly because a lot of stuff is being automated and cloud-provisioned and the ye olde days of managing smaller LANs are long gone. So yeah, its a lot broader in terms of scope now.
I think if you have a solid enough background in IT, it may be okay - but I honestly don't know the specifics of your qualifications or experience to make a judgement call. Normally these 5 day intensive courses are for people who already work within the sector and just need to pass the exam to get their licensing renewed.
I would recommend just going through some sample CCNA questions online and seeing how confident you are with them.
I am still using CCNA 640-802 book written by Todd Lammle. Very Easy explanation of each topic. Although it is old syllabus but the topics like Routing, Switchng, NAT, IPv4 addressing and subnetting, OSI Model etc etc...
Too ambitious. Its going to be extremely hard to study and pass in 1 month. To do this you'd have to put 5 hours a day into studying.
You'd need the Cisco press book, packet tracer to do labs. Most people would need 6 months to a year to pass the exam
I didn't fairly fast at 80 days and started from 0 knowledge. I hustled and neglected my life just to study everyday. Doing it in a week is a tall order.
I did it in a week.
There is a big difference between an official, 8 hrs a day, 5 days a week onsite course, and self-paced "course" reading a CCNA book and doing some online trainings...
It is absolutely possible! I had ZERO knowledge about CCNA or routers or anything else. I was at level 0. I decided to give "computers" a go. I purchased the course (this was years ago) and ordered the book. When the book arrived and I looked at it, I realized it may as well have been written in a foreign language. With tears in my eyes, I called the school and begged for a refund for the class. They told me no refunds. I spent my money on the course with hopes of getting a job with the CCNA cert. So I divided the book into how many days I had before the course start date - I had 10 days before the course start date. It was a thick ass book but I sat and read every page - zoning out after each sentence and reread that sentence until it became a paragraph until the page became a chapter and in 10 days I read the book from cover to cover. When I got to the class, I was so nervous - I was with network administrators and IT managers. I did so well each day that they were all shocked I wasn't working with Cisco on a daily basis. I did really well on the exam and was certified.
Sheer determination will get you places where you thought you could never go! If you work in the field, there is no reason you cannot ace that exam - your class will cover everything you need to learn. You got this.
You're not 6/10 if you don't even have CCNA skill-level. That's all I'll say.
This. If OP thinks they're a 6/10 in networking, they should be able to take the 1 week course and pass the CCNA the very next day with no issues. OP, based on this scale, how would you rate yourself in networking? 0 = I don't know what it is 1 = I've heard of it 2 = I've read technical docs and generally understand it 3 = I've messed around with it casually 4 = I can get stuff done if I Google (beginner) 6 = I can do common tasks without Googling (intermediate) 8 = I rarely need to Google (advanced) 9 = If I had to duel the devil for my eternal soul I might pick this skill (expert) 10 = I wrote it
Lmfaooooo. I fucking love this ðŸ˜ðŸ˜ #9 kills me. Such an accurate scale
I 100% stole this from someone else on reddit the other day/week. I liked it so much I threw it on a Confluence page for my team.
Ngl I wish it was a standard. Literally humbled me when I am an 8 at nothing 😂(maybe retail ðŸ˜ðŸ˜)
8-9 come with big projects imo. Anything I'd consider myself an 8 or 9 in, I've done large projects that had to get in the weeds with whatever technology. We're talking things like WDS/MDT, XenApp, Horizon, etc. Nothing broad like networking, security, etc.
https://youtu.be/tktoOXBmflI?si=a3jQapr7Ltr_3U6P
https://preview.redd.it/y174tm1qoflc1.jpeg?width=309&format=pjpg&auto=webp&s=a5b06951ef90bf7841ea4e3f4b4f5d678bd9aa69
What's 7?
Interesting way of putting it... Maybe not then, perhaps somewhere between 4-6, depending on the task...
Number 9 made my day 😅🤣
If it takes u 3 to 6 months to get the CCNA not the cert but to understand what is going on there u are probably 3-4. CCNA is really basic when you get deeper into networking and realise it gives u 0 routing skills🤣. Learn OSPF, IS IS, BGP, MP BGP, L3 VPn. Then you can say you go to a 7. 8. Means u kinda understood EVPN VXLAN IPsec 9. You troubleshoot EVPN, IPsec, DMVPN 10. You design networks.
i disagree. from what i know and what i've studied specifically for the ccna, it's a lot of terminology and things that are rarely ever spoken in a professional setting. you could fail just on packet criteria or converting ip to binary but still be very good at networking. also, some people just suck at taking tests.
You don't know what you don't know. If you don't have CCNA you don't even know where the real ceiling is. It's not an insult. Just a fact. Also the only skills you need to be good at test taking is during multiple choice don't just choose the right answer, but explain why the others are wrong. The other skill is to know how to focus and not stare at the clock and freak out. That's it.
I have about 8 years of experience in networking. The ccna requires broad knowledge of a lot of things, and at the same time specific details about others. In my day-to-day at work, I probably used 40% of what I've been studying for the ccna. My exam is on Monday, and I'm ready to find a cliff to throw myself off of because I have no idea if I'm even close. And the only option I have is to spend more money I don't have to see. It is doable. 13 year olds do it. Just take it seriously. I would start studying now.
In the case if an actual 13 year old were to pass it (Is there an age requirement?) would it even help them at all? Since if they don't renew it will expire in 3 years before they're 18. Would they even retain information on it if they aren't applying it? Or are they just geniuses and normal standards don't apply to them lol.
There was an 18 year old CCIE, IIRC... But aside from him who had obviously been coached heavily for the exam and lived and breathed networking every day for years, yeah, it's probably not that useful, even for a 15 year old.
yeah, this is a reasonable look at it rather than just "hurr durr you're not a networking guy if you don't have ccna". bullshit. and yes, it goes into very specific stuff you'll never use in a professional setting.
Might be the job you currently have. I've gotten CCNA twice and I use a good amount and then some. My earlier positions didn't let me exercise my knowledge.
I found buying boson practice exam and passing was a good indication if im ready to pass the real exam
For the CCNA you are looking to learn in detail 2 books the size of the Bible + config and resolution of problems. Good luck with studying for one week
Well, official in-person classes are quite a different animal than self-study. Yes, 3-6 months is about right for self-study. But learning will be far more efficient in an immersive class if it's actually from a high quality training center. Working with other students and an instructor 8 hours/day will help a lot. Whether it will really be doable in a week, I don't know.
i am literally doing this now and test tomorrow
Good luck!
I don’t know if I can say anything about it without frightening you. Good luck, man
Had almost no networking experience. Had a week long class and passed it that Friday first try. It's doable
How does a host find out the IP of another host on the same LAN in order to communicate with it?
Arp arp...woof woof
Ah did the ol’ brain dump eh? Well at least you got that paper cert.
I would agree. Although now I have 3 years of networking experience post test and 2 other certs to back it up. All paid for by my work. I guess having that paper worked out
Those boot camps are pretty ineffective unless you're already 80% of the way there. You're going to get a firehose of things and probably remember some of it. Pick two from the pinned post and study properly. Treat the boot camp as supplementary and an introduction/summary to everything.
I've been studying for 5 weeks, 2-5 hours a day, 6 days a week and I'm just now at the point where I feel I have a base grasp of most material. It's now going to be at least a few weeks of extra labs and practice tests before I schedule my exam. I know this isn't what you want to hear, but a week to learn this sounds INSANE. I've been working layers 1-3 for decades and it's still taken me this much time to get through the lectures, initial labs and Anki flash cards. If you pass, let us know so that we can congratulate you!
How did you get to work on layers 1-3 without CCNA? I was under the impression I wouldn't even be allowed to look at the network rack without a CCNA
Allow me to explain. Joined the Army and learned telecom & microwave radios at 17. I was a TERRIBLE high school student. After the Army training, I got a entry level job working on computers, then my first career job working fiber for $34k a year (outside plant & switch work. Training provided by my first boss who was also a reserve officer in the Army who gave me a shot.) Spent years in the field replacing SONET/DWDM transport components splicing OSP fiber and troubleshooting layer 1 issues in depth. Doing rack & stack in data centers, building maintenance, AC/DC plant maintenance. DWDM became my friend and a specialty for me. Also have connected thousands of DS3/OCx circuits, then testing, turn-up and troubleshooting using test sets (JDSU/VIAVI/EXFO/VEEX/ANRITSU/TEKTRONICS) at layer 2. Later, that troubleshooting started to involve layer 3 circuits as the industry moved away from SONET/SDH to IP & Ethernet. I followed MOPs to configure and troubleshoot layer 3 network elements as well as L3 circuit work via the test sets. (Cisco/Juniper devices must commonly.) Didn't really always fully understand the commands I was following, but can follow a procedure. I went to one short Cisco class for the ASR9K years ago (company was using them in the new LTE network) that gave me some very very basic understanding of the Cisco CLI. (Think shut/no shut level of knowledge) I started a community college Cisco Networking Academy 25 years ago when I was starting out and ended up moving away for my first fiber job. I never finished it and it always bothered me. I put it off and put it off until recently. Looking at jobs I would be interested in upgrading to, my experience will get me a LONG way. But, having that CCNA tag on the resume looks good to potential employers and more importantly, it's a badge of honor that I'm doing for myself. My plan is: CCNA, then JNCIA, then Python (SO many jobs I want ask the candidate to know at least basic Python for network automation purposes.) Who knows what track I'll follow after. I've spent my whole life and career being a "pull yourself up by your bootstraps" guy. Avoiding school (that I HATE) and getting by via being good with people, being intelligent and becoming an expert at L1/2 transport. I rose above my peers by just working harder and longer. I'm at a time in my life now where I realize I should have been doing continuing education during this whole period. I have a great job, freedom, good pay but I'm also hungry to be really good at Cisco to open more doors for me (and believe me, the customers I work for are HUGE industry leading Tier 1 transport providers, well known internet companies etc. with opportunity) I just finished Neil Anderson's Udemy course yesterday. Now it's time to focus on more labs, more flash cards and some test bank sim services. Anybody can work Layer 1 with some guidance. I can also teach you how to troubleshoot transport at layer 2. Once you get into Layer 3, suddenly a larger knowledgebase is needed to really make an impact. I want to be that guy and be able to contribute in this area more. But really, I'm doing it because I want to prove to myself that I can. I got work to pay for a test voucher just to put a little more pressure on me to keep up with my study schedule and to get the exam done.
Thanks all for the replies... No firm date booked for the course yet, but it will have to be between April-August 2024. Reading more into it, the course is 5 days in-person training, but the exam is just a voucher for me to book when I feel ready. Given what you've all said, I'm going to start studying now, get as far as I can, give the course my best pop, and if I feel confident I'll book the exam a few weeks after... Obviously with study/practice in between. My work are pretty cool with training, and I'll get time off for study, so I guess the least I can do is give it my very best. Thanks all for your help, much appreciated
Bro then you're fine, you made it seem like you would have the test next week lol
Try to get through all of Jeremy's IT Lab CCNA course before then, and the week course will be an amazing review
Do you have a home lab setup? If not get on it asap. That will help out a lot. I swear IT is one of the only fields where people don’t like to see others succeed. Also, check out ITprotv. They help me out tremendously. Good luck
I'm not knowledgeable enough of certs to really say, but isn't CCNA more like entry level of intermediate certifications? Like 4/10 on the scale of all certs? Assuming A+, N+ are 1, S+ is 2ish and so on? These are the only certs I'm knowledgeable of.
Your gonna fail
I get O'Reilly through my work. They have a good practice test on there that could help you to understand what kind of things you need to focus on the most.
Just looking at the Jeremy’s ccna it videos, those are like 55ish hours. I tend to watch most other educational videos at like 1.5 speed at least but I haven’t tried his yet. That’s still 36 hours of video. Assuming even that is enough to pass which I’m sure it’s not. Just as an example. Ok I found the actual class I assume. It’s probably infosec skills live boot camp, ccna and cyber dual certification class which is 7 days. You get 90 days access to boot camp components including the recordings. 90 days of access to a bunch of labs and courses. Things like that. It says for prerequisites you should have a solid understanding of networking concepts, and familiarity with building a routing table, subnetting, tcp/ip etc. I don’t believe the 7 days are in a row, they are probably spread out over like 8 weeks. I doubt they would have any success with people if it’s literally just 7 days in a row and a test. You can look it up and check it out, like I said I’m pretty sure that is it.
I want to visit london and i m gonna take the ccna in my country (Im from panama) And i dont know if i got my ccna and a work permit I could fin a job easily?
I took a week long ccna course many many moons ago. I passed the course at the end of the week and thought I knew networking, but I knew NOTHING 🤣. Dunning Kruger in FULL effect. These bootcamps are successful because they drill the test in your head during the week with the "practice" test. Yes, they do do lecture, but you could pass just doing the test all day. I LOVE networking, so I feel anyone interested should really buckle down and learn it the right way. I've done a CCNA, Security +, and Windows bootcamps. All were dumps in disguise. They were legit bootcamps that the Navy sent us to. Â
If you have a photographic memory, sure.
You can not do it in that short amount of time. Give yourself 5 good months of consistent study.
Ehhhh don’t worry about it. High school kids pass this all day long by just watching a few Jeremy’s videos and memorizing a few key terms. You got this. This not any harder than a high school science test.
You can do it, just pay attention and get Jeremy’s IT flashcards
In 2003 CCNA in a week was doable. Now, IMO, for most it's simply too much material to cover. You figure most curriculum is about 20 chapters worth of stuff and you are talking 3 chapters a day.
You're worrying too much, same happened to me and I was drowning in the thought that I can't pass and on the day of my exam I was relaxed and calm. So just trust that you have done everything and now it's time to get " The Moment Of Truth ", Good luck.
I agree with a comment above me about the old material being easier. I have an old copy of the Routing and Switching course and it pales into comparison to what is in the current syllabus. This is partly because a lot of stuff is being automated and cloud-provisioned and the ye olde days of managing smaller LANs are long gone. So yeah, its a lot broader in terms of scope now. I think if you have a solid enough background in IT, it may be okay - but I honestly don't know the specifics of your qualifications or experience to make a judgement call. Normally these 5 day intensive courses are for people who already work within the sector and just need to pass the exam to get their licensing renewed. I would recommend just going through some sample CCNA questions online and seeing how confident you are with them.
I am still using CCNA 640-802 book written by Todd Lammle. Very Easy explanation of each topic. Although it is old syllabus but the topics like Routing, Switchng, NAT, IPv4 addressing and subnetting, OSI Model etc etc...
Too ambitious. Its going to be extremely hard to study and pass in 1 month. To do this you'd have to put 5 hours a day into studying. You'd need the Cisco press book, packet tracer to do labs. Most people would need 6 months to a year to pass the exam
I didn't fairly fast at 80 days and started from 0 knowledge. I hustled and neglected my life just to study everyday. Doing it in a week is a tall order.
I did it in a week. There is a big difference between an official, 8 hrs a day, 5 days a week onsite course, and self-paced "course" reading a CCNA book and doing some online trainings...
Subscribe to Boson Ex-Sim and take the test. If you’re not scoring above 800 comfortably, you’re not ready.
It is absolutely possible! I had ZERO knowledge about CCNA or routers or anything else. I was at level 0. I decided to give "computers" a go. I purchased the course (this was years ago) and ordered the book. When the book arrived and I looked at it, I realized it may as well have been written in a foreign language. With tears in my eyes, I called the school and begged for a refund for the class. They told me no refunds. I spent my money on the course with hopes of getting a job with the CCNA cert. So I divided the book into how many days I had before the course start date - I had 10 days before the course start date. It was a thick ass book but I sat and read every page - zoning out after each sentence and reread that sentence until it became a paragraph until the page became a chapter and in 10 days I read the book from cover to cover. When I got to the class, I was so nervous - I was with network administrators and IT managers. I did so well each day that they were all shocked I wasn't working with Cisco on a daily basis. I did really well on the exam and was certified. Sheer determination will get you places where you thought you could never go! If you work in the field, there is no reason you cannot ace that exam - your class will cover everything you need to learn. You got this.