# 查看完整版本 : ip address subneting的問題!!!ccna

bestgood123 2009-10-24 03:22 PM

A primary school has a [color=red][u]network address 195.16.7.0[/u][/color] and [color=red][u]12 subnets[/u][/color] are
needed for different classrooms.

(a)What is the [u][color=red]class[/color][/u] of the network [color=red][u]195.16.7.0[/u][/color]?
(b)What is the [color=red][u]default subnet mask[/u][/color] of the network [color=red][u]195.16.7.0[/u][/color]?
(d)How [u][color=red]many bits[/color][/u] are needed to [u][color=red]borrow[/color][/u] to form [color=red][u]at least 12 subnet[/u][/color]?
[u][color=red]Why?[/color][/u]

(e)What is the [color=red][u]new subnet mask[/u][/color] in [color=red][u]dotted decimal format[/u][/color]?
(f)What is the [color=red][u]new subnet mask[/u][/color] in [color=red][u]slash format[/u][/color]?
(g)Calculate the [color=red][u]number[/u][/color] of [color=red][u]usable hosts per subnet[/u][/color]?(Show your[color=red] [u]steps[/u][/color][u].)[/u]

(ii) Which [u][color=red]subnet group[/color][/u] does [color=red][u]192.16.7.60[/u][/color]   belong to in the [u][color=red]major [/color][/u]network?(Show your [u][color=red]steps.)[/color][/u]

(i)What is the [u][color=red]IP address[/color][/u] of the [color=red][u]3 rd usable host[/u][/color] in the [color=red][u]subnet group 8[/u][/color]?(Show your [color=red][u]steps[/u][/color] or form.)

(j)In [color=red][u]every subnet[/u][/color] created,how [u][color=red]many IP[/color][/u] addresses are [color=red][u]unusable[/u][/color]?
[u][color=red]Why[/color][/u] are they [u][color=red]unusable[/color][/u]?(Show your [color=red][u]steps.)[/u][/color]

[[i] 本帖最後由 bestgood123 於 2009-10-25 08:03 AM 編輯 [/i]]

A) Class C
B) 255.255.255.0
C) 195.16.7.255
D) 4 bits
E) 255.255.255.240
F) 195.16.7.0/28
G) 14
H) i)   195.16.7.48
ii)  195.16.7.48 - 195.16.7.63
iii) 195.16.7.63
i) 195.16.7.131
j) 2

195.16.7.0 -  195.16.7.15 (Not for Use)
195.16.7.16 - 195.16.7.31
195.16.7.32 - 195.16.7.47
195.16.7.48 - 195.16.7.63
195.16.7.64 - 195.16.7.79
195.16.7.80 - 195.16.7.95
195.16.7.96 - 195.16.7.111
195.16.7.112 - 195.16.7.127
195.16.7.128 - 195.16.7.143
195.16.7.144 - 195.16.7.159
195.16.7.160 - 195.16.7.175
195.16.7.176 - 195.16.7.191
195.16.7.192 - 195.16.7.207
195.16.7.208 - 195.16.7.223
195.16.7.224 - 195.16.7.239
195.16.7.240 - 195.16.7.255 (Not for Use)

mcking_hk 2009-10-25 11:35 PM

[quote]原帖由 [i]bestgood123[/i] 於 2009-10-24 03:22 PM 發表 [url=http://computer.discuss.com.hk/redirect.php?goto=findpost&pid=227720309&ptid=10854364][img]http://computer.discuss.com.hk/images/common/back.gif[/img][/url]
A primary school has a network address 195.16.7.0 and 12 subnets are
needed for different classrooms.

(a)What is the class of the network 195.16.7.0?
(b)What is the default subnet mask of the net ... [/quote]

Sorry, This is IVE question??
I thing this is not CCNA question of  real exam.

This question is 90% of IVE (lab./ assignment)

The answer is very easy, but tell me is this IVE (lab./ assignment)  question??

:smile_39::smile_39::smile_39::smile_39:

If is IVE  (lab./ assignment)  question?? Pls., do it yourself

Thank

[[i] 本帖最後由 mcking_hk 於 2009-10-25 11:40 PM 編輯 [/i]]