Comments on 'Cisco Training CCNA IP Addressing - Part 7' |
- OMG this is so great! And thanks to you too ProgramJava!!
- Once u understand that freaking table u realized how great
it is... i will use it too...lol
- That table is brilliant - I will use this for the CCNA
exams.
- WAT?
- I'm not quite sure I understand the use of the look-up
table(s).
- Wouldn't it have been easier to just figure out what 29 bits
equals and then subtract the last octet from 256 and then subtact two from that? I'm brand new to IP addresssing.
- net ID and broadcast id for each subnet..
- 1010010111
- This video, compared to the others, is really bad. It will
makes lost so many time. the answer is really fast and simple. you have a subnet mask of 29 and the IP address is 32.
So you have 32-29= 3 bits for the hosts.
So you calcute 2^3=8 (2 position (0 or 1) for each of the 3 bits).
Then you remove 2 because of the address of the network itself and the address of the multicast.
So you have 8-2= 6 the final answer.
To resume, to find the answer you just make:
2^3-2
- These videos are excellent!
- I really like your videos, but unless they ask tons of these
questions (to reuse the lookup table), then you could just take 2^(32-(subnet number))-2 and that is the number of hosts.
Therefore, 2^(32-29)-2 = 2^3 -2 = 6, seemse much quicker, but without the lookup table you presented I probably would have never thought about that.
- perfect & easy & quite cool =)
- Disagree - you want to be CCNA, you need to know this stuff
inside out.
- The method works and is presented in a style that is about
%1000 superior to %95 of youtube videos availalbe IF you can even find one on this subject so if you rate this you should rate it relative to other youtube video i.e. 5 star
- hahaha, i agree
these r of great help for my ccna :)
- Who here is CCIE raise your hand. If not shut up and be
glad for this free video.
- So that the broadcast and network addresses are not being
counted on the number of hosts.
:)
- On what basis is the 2 used to subtract 2,4,8? at the end
of the vid
- some of the first videos are great , but has an introduction
to the CCNA course its very confusing , it seems like your making people think they need to know to much for somthing simple which is more off puting then infomational.
- thanks soleilenveierge Im new to CCNA and i found this video
confusing. Your explanation is a faster way to arrive at the solution.
- I think the previous posters are missing the point that his
method can be used to answer any question of this type. I don't think he's advocating you write out the full table to answer one question, but rather to have it available as a resource to answer multiple questions of this type.
- This is an RIDICULOUS explanation that can only confuse
anyone who wants to understand the concept !!!!!! Six minute of an explanation that takes really 20 seconds. 32-29 = 3 bits. 3 bits gives 8 possibilities -network - broadcast = 6.
All your other videos are good. You explain well but this one is a big mess.
- I m sorry, simple you can said
32 bit - 29 = 3
3 bit for a
host mean 2^3 -2
witch is 0 to 6
but thank you your videos are excelent!!
I lear much with it.
Congratulations.
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| Information:6.03 min User rating: 4.5609756/5 Username: panchotraining Views on youtube: 29510
Description: Another example of tricks using a lookup table to work out exam type questions
Keywords: CCNA, IP, Addressing, Cisco, Network, Academy, 640-802, CCENT, John, Mills, Networking, TCP/IP, Training
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