All 7 Layers.

As I am reading through my CCNA FastPass by Todd Lammie, ( I know I have to buy differen't sources). They reference different layed devices and I think there are 7 of them but what are they.

I think layer 2 is a router and layer 3 is a switch but im not sure.

Find more posts tagged with

Save $250 on 2025 certification boot camps from Infosec!

Book now with code EOY2025

Button

Comments

1Ste

Either Im blind or there is no edit button but what is.
Edit: ya Im blind...
Unicasts
Broadcasts
MultiCasts

Prolly a dumb question
but If i don't ask ill never know.

Webmaster

www.techexams.net/technotes/ccna/osimodel.shtml

I think layer 2 is a router and layer 3 is a switch but im not sure.

It's vice versa:

www.techexams.net/techlabs/ccna/lan_technologies.shtml

1Ste

1Ste wrote:

Unicasts
Broadcasts
MultiCasts

thanks, What about those, I know I could just google them but I want in more in depth answer/disscusion.

DKCO

A unicast data transmission to a single user. A mutlicast is a data transmission to multiple users (don't confuse this with all users). A broadcast transmits to all possible users which are associated with your network number.

As far as the previous question about devices, this is the way I learned to remember it - Layer 3 devices (routers) make decisions on IP addresses. Layer 2 deviced (bridges and switches) make decisions based on MAC addresses. Layer 1 devices don't deal with addresses; they're simply there to propogate signals (hubs and repeaters). Whatever the device is, ask what it is using to make decisions.

Hope this helps,

Dave K[/i]

1Ste

Thank you, as you can tell I jumped right into CCNA studying and haven't even finished A+ yet so i missed some terms and information I shoulda learned before.

KGhaleon

If your planning to get the Network+, I would start there. The questions your asking are things that most people already know, so your going to have no chance of passing with that amount of knowledge. I started with the Network+, and I'm planning to take my CCNA this week.

Todd's book is really good, and covers much of the material for the exam. I'd also recommend his thicker version of the book(hard/soft cover) and anything else you can get your hands on. If you don't have routers or switches, try going to a tech school and requesting access to some.

I just own a cheap Linksys router, so I went to a local school and borrowed 5 Routers and a 1900 Switch for all my configurations.

KG

1Ste

I don't plan to take the CCNA test for at least a year to a year and a half. I just started studying, I will look at network+ also. I also plan to buy at least 2 more books and some sim stuff.

netcom2000

Yes I would definetley go for Network+ first, as you learn all you need to about the 7 layers, and which protocols nd devices work at each layer, then when it eventualy comes to CCNA then you already have a good understanding of the OSI

Tshocker

I'm starting out and I recommend studying for the Network+. I too went and bought the CCNA books and so on thinking I could do it. I found out that the Network+ is a great starting point. Half way through my books and training videos a I have learned so much that I would have trouble understanding if I just went CCNA first.

1Ste

netcom2000 wrote:

Yes I would definetley go for Network+ first, as you learn all you need to about the 7 layers, and which protocols nd devices work at each layer, then when it eventualy comes to CCNA then you already have a good understanding of the OSI

I think Ill study for both at same time. I do nothing else. Lol. We aren't even on the networking or internet section of A+ yet. soo yaa I got some time.