What Is Dynamically Selected By The Source Host When Sending Data?


what is Data mining ?? ? ?

Data mining detailed as well please ??

Data mining is the practice of using a large data source (such as a detailed customer list) and extracting selected data for a particular purpose (such as suburb locality).
The term 'data mining' was coined, because it is analogous to geological mining: The data base is analogous to the ore body, and the selected data is analogous to the useful metal extracted from an ore.

There are positive and negative aspects to data mining. positiver, if it is something like preparing a locality list; where you have permission of those on the list to use the data.
Negative where very large data bases, such as taxation data or electoral rolls, are 'trolled' to extract data such as likely targets for sending spam email.

Edit:
The first answer to this question is a classic example of the practice.

what is DHCP?

DHCP - Dynamic host Configuration protocol

A DHCP Server dynamically assigns IP addresses to clients.

But you must know how a client acquires its IP address

remember the acronym DORA

D-Discovery
O-Offer
R-Request
A-Acknowledgement

dhcpDiscovery : the client sends a dhcpdiscover broadcast which contains source mac and destination mac address as all FFFFFFs. (broadcast)
dhcpOffer : the server responds with its source mac address.the offer has a pool of available ip addresses.
the client may recieve offers from more than one dhcp servers.
dhcpRequest: the client picks up one of the offers and rejects the others.It then requests for a lease by sending a dhcprequest to the chosen server
dhcpAck: the server then responds with a dhcpACK

well, thats about it..Good Luck!

How can I archive selected emails in Outlook 2007?

Is it possible to archive specific, selected emails on-the-fly in Outlook 2007? If so, can you explain how? I have done numerous internet searches, and I was not able to find a process to do this. I want to be able to archive an email immediately after reading it, instead of sending it to the trash. I do not want to "auto archive" the whole folder or inbox.

you need to create a data file (.pst) and drag your mails manually to the folder (because you dont want to do it automatically.)
here some steps to create a data file:
http://www.tech-recipes.com/rx/1892/outlook_2007_how_to_create_new_data_file_pst/

Open source utility that sends a series of TCP packets to a host and guesses the host OS from how it responds?

I recall an open source utility that sends a series of oddly formated TCP packets to a host and guesses the host OS from how it responds. But I can't recall the name.

there is nmap, which is an active tool that sends out packets to the host (as such the host will able to "see" this scan)

There is another tool out there, called p0f. THis one takes a packet dump (which could be gathered through sniffing or legitimate interaction with the host (e.g. make a http request)) and guesses the OS based on the dump. It is a passive tool, that can not be detected by the host you try to determine the OS for.

How do you graph 2 different curves on 1 graph w/ excel?

I have 2 different data sets. The categories for the x and y axis are the same. However, I want to graph one set of data corresponding to one set of x axis and another set of data to another set of x axis. Unfortunately, both data on the y axis follows corresponds to only one set of x axis data.

Assuming all of your X and Y values are numeric and you will use the XY (Scatter) chart type you have no problem.

Create your data table with three columns.

In the left column will enter all of you X values.
In the middle column enter one set of Y values.
In the right column enter the other set of Y values.

Of course, all Y values must be in the same row as their corresponding X value.

You will have a data table with many blank cells. In fact, every row will probably have only an X value and one Y value.

Select all of the cells in the data table and, optionally, some extra rows and/or extra columns > Insert > Chart > XY (Scatter) > Finish (leaving the no line option selected)

You will see that the resulting chart displays all of your data points.

If you selected extra columns there will be series labels for which there are no data points. Each time you add a Y value across from an X value or add an X and a Y value to a blank line in the chart area you selected the new data point will appear on the chart.

Right click on a data point and add a trendline to see why I had you start with no lines.

Right click on different places in the chart and/or select Chart on the tool bar, to see what you can change. Chart is visible on the tool bar only when a chart is selected and applies to the selected chart only.



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