I Know version 8.3 onward , IP address used in the ACLs are different . we need to allow real ip address in Acls . recently attended interview and I was asked to explain why real ip address need allowed instead translated IP in ACL (version 8.3 Later...

As per Cisco 4 switches are recommended in stack , can somebody know the reason why four switches only recommended . this question was asked to me in interview and i didn't give convincing  answer to interviewer so want to know now?  I searched in go...

Recently in interview I was asked , is there any tool which can be used on cisco ASA to determine destination port is open are not ?  I said from packet-tracer command we can identify but interviewer said there is something else also but did not tell...

Recently in interview I was asked , how many virtual links can we have in ospf ? is there any limitation in ospf virtual link ? I searched in google but did not find any answer can someone let me know ASAP . 

Hi , Is there any way to telnet to multiple cisco routers and switches and change the Username and password . I want to automate this process looking for immediate answer as I have numbers of cisco routers and switches where username and password nee...