Internet is one of the source common to all like sun, wind etc. the first step towards Internet started in 1957, when Soviet Union decided to send a satellite 'Sputnik' to space. as a result of this project Americans started a research project called ARPA(Advanced Research Project Association). by this they wanted to exchange information through computers. The invention of packet switching service, used in data transfer, was the turning point of this research. they introduced a network called ArpaNet. first only four computers connected to it but now it is uncountable. later it was renamed as Internet.
Now we will see about wifi. it is technology used to connect electronic devices wirelessly. a personal computer or any device equipped with wifi can connect to the Internet via wireless network access point or hotspot. you will setup a LAN(Local Area Network) to connect your electronic devices with internet. your routers will have a DHCP(dynamic
host client protocol) table. The DHCP table is a guest list with every allowed piece of equipment. Each device connected to it will have a MAC(Media Access Control) address. it was assigned by manufacture but can be changed by users. MAC and IP addresses are usefull for us to detect unauthorized access to network.
Is your network works slowly? there will be possibility of two problems one is hardware error for this you have to repair or need to buy new but is it possible for intermediate network loss? yes digital thieves or unauthorized access to your network due to their over use you could find a slow down in the internet speed. as wifi is a wireless technology you cannot found piggybacking physically. to found digital thieves You can use manual DHCP assignment. To do this, simply set your
router's DHCP to the manual setting and enter in each of your computer's
physical addresses. This will restrict your network to allow only those
computers recognized by the router. if your computer experience is not enough to manual DHCP assignment you can use Internet monitoring software( for example nagios open source) it watches and give you clear report about you wifi connection. Some routers have inbuilt application for monitoring. this software will show you the IP address of devices connected to it by the count you can found weather stealing of internet is happening or not. other wise you can use your command prompt( start--> Accessories--> command prompt or windowskey + r ---> in Run type cmd and press enter/ok ) in the command prompt type ipconfig there you will find the information of devices connected to it with the count you can found the unauthorized access
If you found the stealing immediately switch off the router the switch on and change password immediately.
to download nagios click here
Tuesday, November 29, 2011
Saturday, November 26, 2011
Do you know how weak your brain is ?
Human Brain |
As we all knew human brain is the complex structure in world. our brain is the main organ in our body it control all the action of our body. it compose of many parts such as cerebrum, cerebellum, hypothalamus etc. but our brain is not much powerful to control or maintain more than one activity at a time because our brain is working with just 12volt which is equal to power of four LED bulbs. To prove that lets play a magic just watch the cards in the image. think any card from that and click the link below for further trick.
in the image in the following link you will not find the card you thought click hereyou could amazed but that is not true because your mind is weak. check the cards above and in the new link you would find the cards changed completely but when you first seen that you would not. like that your brain is too weak but you couldn't know that that is why the you didn't knew the weakness of your brain. you could have magics or magic shows those things are did with the help of your brain weakness.
Thursday, November 24, 2011
How your clothes shine after wash?
We wash our cloth to remove dirt for next use. for that we use soaps or detergents to remove dirt. They not only remove dirt but some chemicals deposit in the small pits in cloths. the present detergents contain chemicals such as stilbenes, fluorescent such as Umbelliferone which absorb energy from UV ray of spectrum and re-emit that energy as light so it will appear like a brighter one the same chemical and technology are used in paper brightening, textile brightening etc. In sunlight it will be better to see because of light indencity and presence of UV ray in sunlight. some animals like birds, cat , dog etc have fluorescent material we could see this in their eyes during night
Sunday, November 20, 2011
Do you know non-stick cookware can cause cancer
Teflon is a compound used in many products such as cooking pans, engines, fabrics,tapes etc. Teflon is coated in non-stick cookwares to stop sticking of food particles to pan this ease the cooking. but when you use metal spoons or knife with non-stick cookware the teflon coating may mix with food item and it may reach your stomach and may stay there due to this your immune system may disrupt and it may cause cancer and other health issues. we cannot stop the use of teflon coated cookwares but we can do one thing using wooden spoon and cooking carefully and changing pan when damaged may reduce its adverse effects
Do you know pattern password is not safe ?
Some phones are secured with pattern password that may like
the picture in the side. This system of security is used in touch model devices.
Do you know when pattern is made with your figures there will be a shade like
pattern on the screen when you see the screen slant you could observe this
others also can observe it so this type of security is not secure for touch
screen. Be sure there are no marks in screen after your login. For password
safety change password ones or twice a month.
Saturday, November 19, 2011
Is insulin deadly?
Insulin
therapy is a treatment for patient with diabetes. Insulin is a hormone produces
in pancreas help to manage glucose level in body. When glucose level increase (average
level 90mg/100ml) in human body pancreas produce insulin it converts extra glucose
into glycogen and stores in body like that when glucose level decreased glucagon
produced and it converts stored glycogen into glucose. When over dose insulin used it converts all the glucose into glycogen. So
suddenly you may feel fit or sometimes you may die so it is advised to get doctors
concern before use insulin.
This is my first interaction with web
hello world this the first blog i am using and with this i like to bring interesting news about IT, Science, electric and electronic and many more to you. and also i will try to sole some educational problems of you in math and other subjects. if you have any though sums or provements send it to my email address(kobishanth@gmail.com) i will solve them and publish in my blogg. if you have any content to publish send it to me i will publish it in my blogg if you have any suggestion please send them too
Subscribe to:
Posts (Atom)