Subnetting
The part of CCNA study I feared and dreaded the most: Subnetting.
Subnetting always kicked my ass when I took a glance or cursory look at it. Sure converting Binary to decimal was easy, even identifying what a /23 in a network was. But how to take an IP address and a subnet mask, then figure out how many subnets you can get off that particular IP address, how many hosts per subnet, and what the valid IP ranges are with the proper broadcast address and all that jazz was just too much for me to aborb.
Power of 2 for the WIN!
Once you realize that subnetting relies heavily on caluation using the powers of 2 then subnetting is pretty much easily learned.
I also believe I have good reference of the OSI model now as well. I am now back filling the knowledge by going over the first couple chapters of Lammles Sybex book for CCNA, now that I am about halfway done with the CCNA for Dummies book which I am using as a primer /overview of the information I need. So far, it seems to be a great combo.
Subnetting always kicked my ass when I took a glance or cursory look at it. Sure converting Binary to decimal was easy, even identifying what a /23 in a network was. But how to take an IP address and a subnet mask, then figure out how many subnets you can get off that particular IP address, how many hosts per subnet, and what the valid IP ranges are with the proper broadcast address and all that jazz was just too much for me to aborb.
Power of 2 for the WIN!
Once you realize that subnetting relies heavily on caluation using the powers of 2 then subnetting is pretty much easily learned.
I also believe I have good reference of the OSI model now as well. I am now back filling the knowledge by going over the first couple chapters of Lammles Sybex book for CCNA, now that I am about halfway done with the CCNA for Dummies book which I am using as a primer /overview of the information I need. So far, it seems to be a great combo.
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