Techno And Science News | Netproxies.info

Having used a desktop computers and notebook computers that had been officially supplied by the company where I was employed, there was no need to worry about what type of notebook computer or whatever configuration that was required in my work.

So when I finally had to purchase my own notebook computer for personal private use, I found myself facing a myraid of questions. Just what should I look out for when buying my own notebook computer?

First, I found I had to quantify my own needs for a notebook computer. Having quantified my needs, which was to do a lot of number crunching and to perform technical analysis and charting of stock prices online, I found that even low priced models could perform work that was demanded by my needs.

I was pleasantly surprised that my needs did not demand a high priced model.

Secondly, the notebook computer I required would need to be sufficiently light. In the process of identifying the notebook computer, I decided I did not need a subnotebook, as most notebook computers weigh between 5 to 7 kg, with a subnotebook weighing at 5 kg or less.

The standard notebook computer was sufficient for my needs coming with some wordprocessing software that was already installed as part of the package that comes with the computer and with Internet access capabilities. All I need was to install my specialized technical analysis program to monitor the stock prices.

At the same time, advances in notebook computer technology ensured that I had wireless technology and can hook up online at any hotspot outlet. This would allow me to have mobile wireless access anywhere I go. I could also use a pen drivefor additional mobile storage.
Read the rest of this entry »

Tri Peaks Solitaire is a fun, and popular solitaire game, combining elements of Golf Solitaire and Pyramid Solitaire. It has an interesting scoring system, which can lead to much higher scores when you DON’T play all the moves you can.

There are 2 keys to getting a high score in Tri Peaks Solitaire:
- Clear each Peak.
- Form long sequences.

You get quite a lot of points for clearing a peak. You get 15 points for clearing the first peak, 15 points for clearing the second peak, and then 30 points for clearing the last peak. Thats a total of 60 points, which shows that it is definitely worth while getting rid of all the peaks, and unless you can form an incredibly long sequence, it’s always worth trying to clear the peaks.

The second key to doing well at Tri Peaks Solitaire is to form really long sequences, where you do not deal a card from the talon.

The Tri-Peaks scoring system will give you one additional point for every card you move in a sequence. So the first card you move gives you one point, the next card gives you two points, the next card gives you three points, and the next card gives you four points, etc. The sequence ends as soon as you deal from the talon, and the sequence begins at one point again.

This system is interesting because it often makes sense to not move cards as soon as you can.

There are 2 ways to illustrate this.

What do you think the difference in scoring would be between one 12-long sequence versus two 6-long sequences? Most people know the long sequence will outscore the shorter sequences, but not many people realise by how much!

The 12 long sequence gives us a score of 1+2+3+4+5+6+7+8+9+10+11+12, which is 78.

Surely the two 6-long sequences won’t be too far behind?
Well, we get 1+2+3+4+5+6 for the first sequence. And then we 1+2+3+4+5+6 for the second sequence.

The total is only 42! Even though the same number of cards were removed, the difference in scores is 36 points!
Read the rest of this entry »

OSPF is a major topic on both the CCNA and CCNP exams, and it’s also the topic that requires the most attention to detail. Where dynamic routing protocols such as RIP and IGRP have only one router type, a look at a Cisco routing table shows several different OSPF route types.
R1#show ip route
Codes: C – connected, S – static, I – IGRP, R – RIP, M – mobile, B – BGP
D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area
N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2
E1 – OSPF external type 1, E2 – OSPF external type 2, E – EGP
In this tutorial, we’ll take a look at the difference between two of these route types, E1 and E2.
Route redistribution is the process of taking routes learned via one routing protocol and injecting those routes into another routing domain. (Static and connected routes can also be redistributed.) When a router running OSPF takes routes learned by another routing protocol and makes them available to the other OSPF-enabled routers it’s communicating with, that router becomes an Autonomous System Border Router (ASBR).
Let’s work with an example where R1 is running both OSPF and RIP. R4 is in the same OSPF domain as R1, and we want R4 to learn the routes that R1 is learning via RIP. This means we have to perform route redistribution on the ASBR. The routes that are being redistributed from RIP into OSPF will appear as E2 routes on R4:
R4#show ip route ospf

O E2 5.1.1.1 [110/20] via 172.34.34.3, 00:33:21, Ethernet0

6.0.0.0/32 is subnetted, 1 subnets

O E2 6.1.1.1 [110/20] via 172.34.34.3, 00:33:21, Ethernet0

172.12.0.0/16 is variably subnetted, 2 subnets, 2 masks

O E2 172.12.21.0/30 [110/20] via 172.34.34.3, 00:33:32,
Ethernet0

O E2 7.1.1.1 [110/20] via 172.34.34.3, 00:33:21, Ethernet0

15.0.0.0/24 is subnetted, 1 subnets

O E2 15.1.1.0 [110/20] via 172.34.34.3, 00:33:32, Ethernet0

E2 is the default route type for routes learned via redistribution. The key with E2 routes is that the cost of these routes reflects only the cost of the path from the ASBR to the final destination; the cost of the path from R4 to R1 is not reflected in this cost. (Remember that OSPF’s metric for a path is referred to as “cost”.)
In this example, we want the cost of the routes to reflect the entire path, not just the path between the ASBR and the destination network. To do so, the routes must be redistributed into OSPF as E1 routes on the ASBR, as shown here.
R1#conf t
Read the rest of this entry »

Windows XP can leave you pulling your hear out trying to delete that undeletable file or folder, search the web high and low, no solution for the dreaded “Cannot delete file: Cannot read from the source file or disk” error could be found………..Until now

Recently I had a program cause a problem with; well I’m not sure exactly what. But it created a file folder that absolutely could not be deleted no matter what I tried. I tried to rename it, to move it, to delete it, from safe mode, from administrator safe mode, nothing worked

I spent hours and hours searching the web trying to find a solution. What I found on the net darkened my hopes of ever getting rid of this folder short of a format and reload of windows.

Not one to give up very easily at all, I starting thinking of ways one might delete files nothing seemed to be of much help until I found out that I could move the file if it was on the same drive, inside its parent folder. Now if the file or folder you need to delete is in your root system folder or on any other partition then your system or root partition, then this fix probably won’t work for you. To make it a bit clearer, the file or folder you want to delete must be on the system drive partition, but not in the root of that drive or partition. The reasons why will soon become apparent. Also you must have administrator rights to perform this fix

Ok, what ever folder the target file or folder is in; empty it out, saving all other files to another folder that can be renamed later. Now that you have just the target file or folder inside its parent folder, you can rename the parent folder to what ever you want. I used “Delete Me” just so I didn’t make any mistakes.

Now restart windows and boot into safe mode. If you are not sure how to boot into safe mode, a rule of thumb is to restart the system and tap the F8 key as soon as the boot sequence begins, usually until you hear system beeps that signal keyboard errors. By this time the system is booting into safe mode.

When you see the login screen, log in as administrator, the system will continue to boot, usually there will be a message advising you that you are booting into safe mode and asking if you want to continue. Windows XP safe mode desktop is black, so don’t worry if you have never been here before, everything is going fine.

Now that you are logged on as the administrator in safe mode follow these steps

1. Open control panel from the start menu

2. Select USER ACCOUNTS from the control panel menu icons

3. Select Create New account from the list of tasks

4. In the new task windows, give the account a two or three letter name, not any real user name. and click the next button

5. Select the LIMITED account feature by selecting the little radio button at the top, and click the create account button at the bottom

6. Close all program windows and restart windows

7. When windows boots you will see the new user id, log in on the new user account that you just created

8. You may get some funny flags and request when you log in , but they are not to worry, let the system finish logging you in and when all activity has finished, restart windows again in safe mode
Read the rest of this entry »