Comments on: Cisco Announces New CCNA Certifications

By: CCNA - Cisco CCNA Voice Certification and Training

CCNA - Cisco CCNA Voice Certification and Training — Tue, 09 Feb 2010 17:04:54 +0000

[...] Todd Lammle’s blog, where he further discusses the new Cisco® associate level certifications and the future of [...]

By: Manan

Manan — Sun, 26 Apr 2009 03:59:15 +0000

hello sir,

there is one confusion , all say validity expire after 3 years.

validity if ccna expire or if we clear ccnp and cnni then also validty expire or this vaildity is only for ccna.

and if we clear ccnp or ccni then also we clear exam after 3 years again or certified for always??

Plz clear doubt.

thanks,
Manan

By: adrowlette

adrowlette — Mon, 12 Jan 2009 23:59:03 +0000

Hi Todd,

I’m using your book for my CCNA class with Gatlin. The labs they have us doing are really tough Do you have any suggestions on how to get my first job once I pass my cert test? I am totally changing careers and know I’ll want more certifications–but I have no real on-the-job training? Can I job shadow someone from a tech company?

Thanks,

Annette

By: Jayeshkumar

Jayeshkumar — Mon, 01 Dec 2008 09:38:40 +0000

Hello Sir,
I am preapairing for CCNA exams I am going through your books it fantastic. I want to know that can i have download Subnet and more games from cisco site bcoz i don’t have internet conection at my home

– Jayeshkumar
Nasik (Maharashtra) India

By: LT72884

LT72884 — Fri, 31 Oct 2008 16:17:30 +0000

Thats actually right. a/22 has 1024 total IP’s and 1022 usable IP’s due to network address and braodcast address. If you take 32 bit mask and minus 22 from it, you get 10. Ip’s are base two numbers so 2^10 = 1024 total IP’s. OR if you know that a single calss C subnet(/24) mask has 256 total IP’s then you know that a 23 bit mask has 512. So a /22 would be double that, 1024. Also if you know that you have 1024 IP’s, if you divide that by 256 you get 4 class C networks with in a /22. if you want i can help any one here subnet. I have a great chart i designed for my professor.

/28 = 16 networks with 16 total IP’s
/27 = 8 networks with 32 total IP’s
/26 = 4 networks with 64 total IP’s
/25 = 2 networks with 128 total IP’s
/24 = 1 network with 256 total IP’s
/23 = 2 Class C networks with 512 total ip’s
/22 = 4 class c networks with 1024 total ip’s
/21 = 8 class c networks with 2048 total ip’s

See the pattern? going above a /24, networks double and ip’s are cut in half. REMEMBER to subtract 2 IP’s to account for network address and broadcast address.

Now with anything below a /24 is technically one big network BUT you can see how it contains a certain amount of class c networks.

192.168.0.0/22

will give you the range
192.168.0.0
192.168.1.0
192.168.2.0
192.168.3.0-255

See, 4 class c networks. Now to make those actually 4 seperate class c networks with in the /22. you would write it out like so.

man_down.com needs your help. given the address space of 192.168.0.0/22. subnet to allot each interface on router A to support 250 users. Router A has 4 fast ethernet interfaces.

192.168.0.0/24 = network 192.168.0.1 = fa0
192.168.1.0/24 = network 192.168.1.1 = fa1
192.168.2.0/24 = network 192.168.2.1 = fa2
192.168.3.0/24 = network 192.168.3.1 = fa3

email me if you have more questions. I have figured out a way to subnet using my fingers.

By: klevis miho

klevis miho — Fri, 31 Oct 2008 15:50:05 +0000

Todd i found a mistake in you book.
Page 169(answers to written lab 3.2) in the /22 subnet the number of available host should be 1026 not 1022.

By: syed waseem

syed waseem — Wed, 27 Aug 2008 14:15:56 +0000

This is waseem.How are you. i read ur book i think its good but iam i little bit fear for giveing exam . i want more qustions objective from u

i hope i will get with u. ur terminolagy is good . i need some objective
and idea with you for giveing exam.
thank you

By: LT72884

LT72884 — Fri, 22 Aug 2008 16:17:18 +0000

I sure will. I try to email him and or call him every so often. He wants me to be on his team this up comming January for the skills USA network tourny. Maybe i will win my scholarship..

Any way, it was nice to hear from you. If you want to email me, go ahead. I imagine you want to keep these general chit chat posts to a minimum on your blog..

Thanx

Matt Thomas

By: Todd Lammle

Todd Lammle — Fri, 22 Aug 2008 16:01:51 +0000

Matt, say “hi” to Jack from me.
We don’t get to talk as often as I’d like….

It’s hard to pass the CCNA exam, even after spending a year at a Cisco academy. They teach you a lot of skills, but you need to concentrate on the objectives to pass the exam.

The study guide will help you do that, but you still need to do a lot of hands-on labs too.

Don’t give up, but study even harder. Now that you took the exam you know what to study for.

Cheers!
Todd Lammle

By: LT72884

LT72884 — Thu, 21 Aug 2008 13:56:48 +0000

Ello Todd.

Hey not sure if you remember these guys but my friend Mr Jack Bridwell says that he knows you fairly well. My professor and him told me to buy your books because they both have met you and agree that its the best book out. So i done did did it and boughts me a copy of it. LOL. Must say, its a pretty good book.

i am so bloody mad that i did not pass the exam the first time through ciscos netacad that i even went and spent a lot of money and bought me 3 2600 routers with 12.4 IOS and 4 switches including a 2950 and 2 2900’s. I just bought me three PC’s and a server rack that everything is going in. I am determined this time to pass. One day i will email you and show you my cert.

wouldnt mind hearing back from ya on maybe some tips or just to chit chat.

Thanx

Later

Matt Thomas