Jump to content
Sadikhov IT Certification forums
Sign in to follow this  
TheDarkLord

CCNA Frequently Asked Questions

Recommended Posts

Hello everybody. I ask maybe trivial easy question but I don't find a good answer for it:

Why we use VLAN ? Why? Why we cannot use ONLY IP-subnetting? When did appear REAL necessity for VLAN?

I read that we use VLAN for security, logical separation of users, separation one apartment's trafic from another apartment's trafic, inrcreasing number of broadcast domains, decreasing useless broadcast trafic and blablabla...

I feel that it isn't prime cause why human uses VLAN.

 

Please, give me the real examples when using of VLAN is very necessary and we cannot do without VLAN's help or it will cause big difficulties?

 

As I know VLAN was ISP's technology initially and only then VLAN has been used for small LANs.

 

Thanks

Edited by Goodwin86

Share this post


Link to post
Share on other sites

What is the proper order of the layers of the OSI model from the highest layer to the lowest layer?

· physical, network, application, data link, presentation, session, transport

· application, physical, session, transport, network, data link, presentation

· application, presentation, physical, session, data link, transport, network

· application, presentation, session, transport, network, data link, physical

· presentation, data link, session, transport, network, physical, application

 

as I know: application, presentation, session, transport, network, data link, physical

  • Upvote 1

Share this post


Link to post
Share on other sites

hi please i need help guys after the expiration of CCNA can one still progress to do the CCNP or i have to rewrite the CCNA again before

 

If your certification is expired, you have to start from CCNA again. that's the only way. By the way CCNA exam is little bit expensive on these days and it's about $295.http://www.pearsonvue.com/vouchers/pricelist/cisco.asp.

 

You can get latest CISCO certification and news from following page

http://www.facebook.com/FutureNetworks

Share this post


Link to post
Share on other sites

Alright if you have to know, its pretty vague to define what "Finger request" is, mainly it is used in linux. It has been used as a hacker tool for ages. When it comes to Cisco, it has the same effect.

 

So what is a "finger" in respect to Cisco:

 

The finger service can allow remote users to find out who is logged into the router, providing information like login names and such. The "no service finger" command disables the router from replying to finger requests, but it doesn't block the requests from coming into your networks, you would need an ACL to block them completely.

Your answer is concise and professional, thank you very much!

Share this post


Link to post
Share on other sites

Hello everybody. I ask maybe trivial easy question but I don't find a good answer for it:

Why we use VLAN ? Why? Why we cannot use ONLY IP-subnetting? When did appear REAL necessity for VLAN?

I read that we use VLAN for security, logical separation of users, separation one apartment's trafic from another apartment's trafic, inrcreasing number of broadcast domains, decreasing useless broadcast trafic and blablabla...

I feel that it isn't prime cause why human uses VLAN.

 

Please, give me the real examples when using of VLAN is very necessary and we cannot do without VLAN's help or it will cause big difficulties?

 

As I know VLAN was ISP's technology initially and only then VLAN has been used for small LANs.

 

Thanks

 

Hi, guy, I can understand you very well, because a few days ago, i answer the same question like you, and i did much research to know VLAN, no i know it completely...Please have a look at my Cisco Router Blog in this forum, I'll share my article "

Tutorial of VLAN on Why to Use, What is and How to Configure VLAN?" to you, hope to help...Good luck!

Share this post


Link to post
Share on other sites

Dears

 

i have passed ccna exam since 2009, and after it by some months i passed bsci exam , but now the two exams are expired , did i need to reenter ccna exam to activate it or can i enter any other exam like in the ccnp track to reactivate it

Share this post


Link to post
Share on other sites

my CCNA certification was also expired and i had to retake the exam.but i found a really nice website which had all the right stuff and dumps to be prepared for the exam.the website was reviewexams(dot)weebly(dot)com

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

×