On 07/15/2014 08:34 PM, Alexandru Juncu wrote: > On 15 July 2014 21:26, Fabian Thorns <[email protected]> wrote: >> On 07/15/2014 08:21 PM, G. Matthew Rice wrote: >>> On Tue, Jul 15, 2014 at 10:28 AM, Alexandru Juncu <[email protected]> wrote: >>>> About the "Subnetting", how in depth should this be treated? Because, >>>> for example, Cisco CCNA courses dedicate entire chapter for this. I >>>> noticed that LPIC treaded the idea of subnet only at classful >>>> boundaries (with class A,B and C subnet masks). Will this still be >>>> the case or any subnet masks be valid (in this case, I would add the >>>> concept of dotted quad representation of netmasks and prefix >>>> notation). >>> We've dumped the notion of Class A/B/C networks. It is full /n >>> subnetting that is expected knowledge. >>> >>> And dotted quads are also expected knowledge for netmasks, too. >> Would it help to add CIDR as the list of terms? >> >> Not addressing ancient network classes seems good to me and with IPv6 >> becoming more popular the overall concept of CIDR should be familiar to >> all candidates. > I would actually not add either CIDR or the idea of classes. CIRD is > de facto the only thing used and classes have been outdated for about > a decade (I used the terms to point out what was in the > previous/current curriculum).
I'd consider CIDR the only possible approach there days, too. This does however not mean we shouldn't communicate clearly what we expect from the candidates. It may be better to mention CIDR or VLSM (I personally prefer CIDR) as our understanding of 'subnetting'than to make candidates feel well-prepared though their subnetting knowledge is classful only... > And don't get me wrong, I don't think it's a bad idea to only talk > about classless netmasks. Nah, I'm sure we all agree to this :-) > Just wanted to point out that properly > teaching subnetting takes more effort (have been teaching subnetting > to many generations of students and though a lot of them got the idea > quickly, many had difficulties when tested on the matter). Sure it is, but when taking into consideration IPv6 prefix lengths like /48, /56, /64, ... the number or "standard netmasks" becomes longer anyway. So understanding the principle of classless subnetting one time makes everything else pretty straight forward. Understanding what a subnets isand knowing how to determine if a host belongs to a subnet or is captured by a given route is essential for network troubleshooting. As always, I wouldn't expect LPI to be mean or construct trick questions on this topic (even though this topic for sure has the potential to do this).Maybe this helps to get an idea of how detailed subnetting should be covered. Regards, Fabian _______________________________________________ lpi-examdev mailing list [email protected] http://list.lpi.org/cgi-bin/mailman/listinfo/lpi-examdev
