Hello, i just did a quick review on my CCNA material and it has risen me a few questions:1)I know you have IP and the 3rd OSI layer - but why do we really need it? we have unique MAC addresses for every NIC so that should be enough, so why do we need...

When users complain that the network is slow(the organizational network,aka "intranet") what show commands can i use in the switch and on what fields/parameters should i look that can point out that there is a congestion problem(the network is slow.....

I'm ashamed to ask this but i really dont have a clue:when you connect to the router/switch through console cable - which software do you use in order to get to the IOS?i mean - ok i've opened up CMD in windows - then what? i'm not supposed to telnet...

Hi!i have 2 questions:1)The first and primary questions is:I work in an organization(lets say one LAN)and all the users can access the internet - so when several users come to me and say that they cannot connect the internet - how do i start checking...

Hello people!I have a question:If i'm a network administrator and one of my departments/users is complaining about slow connection - what commands can i use on the router(and switch too.) to find out clues about congestion or network overload?How can...