[imath]\bold{khan}[/imath] was catching red herring

logistic_guy

logistic_guy

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@khansaheb

Suppose you got up one morning and decided to jog. While jogging a blonde girl stopped you and gave you three \(\displaystyle \text{IP}\)s.

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

She asked you which one of them is the network address? What would you tell her? How would your answer change if she asked you the same question while you were catching red herring?

😸
👚
👠👠
 
logistic_guy said:
View attachment 39470
@khansaheb

Suppose you got up one morning and decided to jog. While jogging a blonde girl stopped you and gave you three \(\displaystyle \text{IP}\)s.

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

She asked you which one of them is the network address? What would you tell her? How would your answer change if she asked you the same question while you were catching red herring?

😸
👚
👠👠
Click to expand...
This is a calculus problem???

I despise jogging. Only a tiger running after me - will make me run.

Please show us what you have tried and exactly where you are stuck.

Please follow the rules of posting in this forum, as enunciated at:


Please share your work/thoughts about this problem
 
Suppose the blonde gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}8\) prefix, or the subnet mask \(\displaystyle 255.0.0.0\).

Then, you would tell her that none of the three \(\displaystyle \text{IP}\)s

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

is the network address because in this situation the network address is \(\displaystyle 1.0.0.0\) which she did not give you!
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}9\) prefix, or the subnet mask \(\displaystyle 255.128.0.0\).

Then, you would tell her that none of the three \(\displaystyle \text{IP}\)s

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

is the network address because in this situation the network addresses are \(\displaystyle 1.0.0.0\) and \(\displaystyle 1.128.0.0\) which she did not give you!
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}10\) prefix, or the subnet mask \(\displaystyle 255.192.0.0\).

Then, you would tell her that none of the three \(\displaystyle \text{IP}\)s

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

is the network address because in this situation the network addresses are \(\displaystyle 1.0.0.0\), \(\displaystyle 1.64.0.0\), \(\displaystyle 1.128.0.0\), and \(\displaystyle 1.192.0.0\) which she did not give you!
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}11\) prefix, or the subnet mask \(\displaystyle 255.224.0.0\).

Then, you would tell her that none of the three \(\displaystyle \text{IP}\)s

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.32.0.0\)
\(\displaystyle 1.64.0.0\)
\(\displaystyle 1.96.0.0\)
\(\displaystyle 1.128.0.0\)
\(\displaystyle 1.160.0.0\)
\(\displaystyle 1.192.0.0\)
\(\displaystyle 1.224.0.0\)
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}12\) prefix, or the subnet mask \(\displaystyle 255.240.0.0\).

Then, you would tell her that none of the three \(\displaystyle \text{IP}\)s

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.16.0.0\)
\(\displaystyle 1.32.0.0\)
\(\displaystyle 1.48.0.0\)
\(\displaystyle 1.64.0.0\)
\(\displaystyle 1.80.0.0\)
\(\displaystyle 1.96.0.0\)
\(\displaystyle 1.112.0.0\)
\(\displaystyle 1.128.0.0\)
\(\displaystyle 1.144.0.0\)
\(\displaystyle 1.160.0.0\)
\(\displaystyle 1.176.0.0\)
\(\displaystyle 1.192.0.0\)
\(\displaystyle 1.208.0.0\)
\(\displaystyle 1.224.0.0\)
\(\displaystyle 1.240.0.0\)
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}13\) prefix, or the subnet mask \(\displaystyle 255.248.0.0\).

Then, you would tell her that none of the three \(\displaystyle \text{IP}\)s

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.8.0.0\)
\(\displaystyle 1.16.0.0\)
\(\displaystyle 1.24.0.0\)
\(\displaystyle 1.32.0.0\)
\(\displaystyle 1.40.0.0\)
\(\displaystyle 1.48.0.0\)
\(\displaystyle 1.56.0.0\)
\(\displaystyle 1.64.0.0\)
\(\displaystyle 1.72.0.0\)
\(\displaystyle 1.80.0.0\)
\(\displaystyle 1.88.0.0\)
\(\displaystyle 1.96.0.0\)
\(\displaystyle 1.104.0.0\)
\(\displaystyle 1.112.0.0\)
\(\displaystyle 1.120.0.0\)
\(\displaystyle 1.128.0.0\)
\(\displaystyle 1.136.0.0\)
\(\displaystyle 1.144.0.0\)
\(\displaystyle 1.152.0.0\)
\(\displaystyle 1.160.0.0\)
\(\displaystyle 1.168.0.0\)
\(\displaystyle 1.176.0.0\)
\(\displaystyle 1.184.0.0\)
\(\displaystyle 1.192.0.0\)
\(\displaystyle 1.200.0.0\)
\(\displaystyle 1.208.0.0\)
\(\displaystyle 1.216.0.0\)
\(\displaystyle 1.224.0.0\)
\(\displaystyle 1.232.0.0\)
\(\displaystyle 1.240.0.0\)
\(\displaystyle 1.248.0.0\)
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}14\) prefix, or the subnet mask \(\displaystyle 255.252.0.0\).

Then, you would tell her that none of the three \(\displaystyle \text{IP}\)s

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.4.0.0\)
\(\displaystyle 1.8.0.0\)
\(\displaystyle 1.12.0.0\)
\(\displaystyle 1.16.0.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.236.0.0\)
\(\displaystyle 1.240.0.0\)
\(\displaystyle 1.244.0.0\)
\(\displaystyle 1.248.0.0\)
\(\displaystyle 1.252.0.0\)
 
fresh_42 said:
"Okay, see, the prerequisite for a joke is that it be funny." (MiB 3)
Click to expand...
khan and blonde are standing on opposite sides of the same river.

blonde asked khan: How can I get to the other side of the river?
khan replied: You are already on the other side of the river!

🤣🤣🤣🤣🤣🤣🤣
 
Last edited:
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}15\) prefix, or the subnet mask \(\displaystyle 255.254.0.0\).

Then, you would tell her that none of the three \(\displaystyle \text{IP}\)s

\(\displaystyle 1.0.0.1\)
\(\displaystyle 1.5.0.0\)
\(\displaystyle 1.5.1.2\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.2.0.0\)
\(\displaystyle 1.4.0.0\)
\(\displaystyle 1.6.0.0\)
\(\displaystyle 1.8.0.0\)
\(\displaystyle 1.10.0.0\)
\(\displaystyle 1.12.0.0\)
\(\displaystyle 1.14.0.0\)
\(\displaystyle 1.16.0.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.236.0.0\)
\(\displaystyle 1.238.0.0\)
\(\displaystyle 1.240.0.0\)
\(\displaystyle 1.242.0.0\)
\(\displaystyle 1.244.0.0\)
\(\displaystyle 1.246.0.0\)
\(\displaystyle 1.248.0.0\)
\(\displaystyle 1.250.0.0\)
\(\displaystyle 1.252.0.0\)
\(\displaystyle 1.254.0.0\)
 
Finally we found one😍

Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}16\) prefix, or the subnet mask \(\displaystyle 255.255.0.0\).

Then, you would tell her that the \(\displaystyle \text{IP}\)

💚\(\displaystyle 1.5.0.0\)💙

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.1.0.0\)
\(\displaystyle 1.2.0.0\)
\(\displaystyle 1.3.0.0\)
\(\displaystyle 1.4.0.0\)
\(\displaystyle \textcolor{purple}{1.5.0.0}\)
\(\displaystyle 1.6.0.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.249.0.0\)
\(\displaystyle 1.250.0.0\)
\(\displaystyle 1.251.0.0\)
\(\displaystyle 1.252.0.0\)
\(\displaystyle 1.253.0.0\)
\(\displaystyle 1.254.0.0\)
\(\displaystyle 1.255.0.0\)
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}17\) prefix, or the subnet mask \(\displaystyle 255.255.128.0\).

Then, you would tell her that the \(\displaystyle \text{IP}\)

\(\displaystyle 1.5.0.0\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.0.128.0\)
\(\displaystyle \cdots\)
\(\displaystyle \textcolor{purple}{1.5.0.0}\)
\(\displaystyle 1.5.128.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.0.0\)
\(\displaystyle 1.255.128.0\)
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}18\) prefix, or the subnet mask \(\displaystyle 255.255.192.0\).

Then, you would tell her that the \(\displaystyle \text{IP}\)

\(\displaystyle 1.5.0.0\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.0.64.0\)
\(\displaystyle 1.0.128.0\)
\(\displaystyle 1.0.192.0\)
\(\displaystyle \cdots\)
\(\displaystyle \textcolor{red}{1.5.0.0}\)
\(\displaystyle 1.5.64.0\)
\(\displaystyle 1.5.128.0\)
\(\displaystyle 1.5.192.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.0.0\)
\(\displaystyle 1.255.64.0\)
\(\displaystyle 1.255.128.0\)
\(\displaystyle 1.255.192.0\)
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}19\) prefix, or the subnet mask \(\displaystyle 255.255.224.0\).

Then, you would tell her that the \(\displaystyle \text{IP}\)

\(\displaystyle 1.5.0.0\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.0.32.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.0.224.0\)
\(\displaystyle \cdots\)
\(\displaystyle \textcolor{red}{1.5.0.0}\)
\(\displaystyle 1.5.32.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.5.224.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.0.0\)
\(\displaystyle 1.255.32.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.224.0\)
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}20\) prefix, or the subnet mask \(\displaystyle 255.255.240.0\).

Then, you would tell her that the \(\displaystyle \text{IP}\)

\(\displaystyle 1.5.0.0\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.0.16.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.0.240.0\)
\(\displaystyle \cdots\)
\(\displaystyle \textcolor{red}{1.5.0.0}\)
\(\displaystyle 1.5.16.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.5.240.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.0.0\)
\(\displaystyle 1.255.16.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.240.0\)
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}21\) prefix, or the subnet mask \(\displaystyle 255.255.248.0\).

Then, you would tell her that the \(\displaystyle \text{IP}\)

\(\displaystyle 1.5.0.0\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.0.8.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.0.248.0\)
\(\displaystyle \cdots\)
\(\displaystyle \textcolor{red}{1.5.0.0}\)
\(\displaystyle 1.5.8.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.5.248.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.0.0\)
\(\displaystyle 1.255.8.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.248.0\)
 
Now suppose she gave you a \(\displaystyle \text{CIDR}\) with a \(\displaystyle \text{/}22\) prefix, or the subnet mask \(\displaystyle 255.255.252.0\).

Then, you would tell her that the \(\displaystyle \text{IP}\)

\(\displaystyle 1.5.0.0\)

is the network address because in this situation the network addresses are:

\(\displaystyle 1.0.0.0\)
\(\displaystyle 1.0.4.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.0.252.0\)
\(\displaystyle \cdots\)
\(\displaystyle \textcolor{red}{1.5.0.0}\)
\(\displaystyle 1.5.4.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.5.252.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.0.0\)
\(\displaystyle 1.255.4.0\)
\(\displaystyle \cdots\)
\(\displaystyle 1.255.252.0\)
 
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