| Register | Members | Radio & TV | Games | Quran | Calendar | Search |
| Science & Technology News and Discussion All the latest, from the world of IT |
 |
| LinkBack | Thread Tools | Rate Thread | Display Modes |
18-07-2008, 07:55 PM
| ||||
| ||||
| IP address Every machine on the Internet has a unique identifying number, called an IP Address. A typical IP address looks like this: * 216.27.61.137 To make it easier for us humans to remember, IP addresses are normally expressed in decimal format as a "dotted decimal number" like the one above. But computers communicate in binary form. Look at the same IP address in binary: * 11011000.00011011.00111101.10001001 The four numbers in an IP address are called octets, because they each have eight positions when viewed in binary form. If you add all the positions together, you get 32, which is why IP addresses are considered 32-bit numbers. Since each of the eight positions can have two different states (1 or 0) the total number of possible combinations per octet is 28 or 256. So each octet can contain any value between 0 and 255. Combine the four octets and you get 232 or a possible 4,294,967,296 unique values! Out of the almost 4.3 billion possible combinations, certain values are restricted from use as typical IP addresses. For example, the IP address 0.0.0.0 is reserved for the default network and the address 255.255.255.255 is used for broadcasts. The octets serve a purpose other than simply separating the numbers. They are used to create classes of IP addresses that can be assigned to a particular business, government or other entity based on size and need. The octets are split into two sections: Net and Host. The Net section always contains the first octet. It is used to identify the network that a computer belongs to. Host (sometimes referred to as Node) identifies the actual computer on the network. The Host section always contains the last octet. There are five IP classes plus certain special addresses: * Default Network - The IP address of 0.0.0.0 is used for the default network. * Class A - This class is for very large networks, such as a major international company might have. IP addresses with a first octet from 1 to 126 are part of this class. The other three octets are used to identify each host. This means that there are 126 Class A networks each with 16,777,214 (224 -2) possible hosts for a total of 2,147,483,648 (231) unique IP addresses. Class A networks account for half of the total available IP addresses. In Class A networks, the high order bit value (the very first binary number) in the first octet is always 0. Net Host or Node 115. 24.53.107 * Loopback - The IP address 127.0.0.1 is used as the loopback address. This means that it is used by the host computer to send a message back to itself. It is commonly used for troubleshooting and network testing.
__________________   |
| Sponsored Links |
|
18-07-2008, 07:56 PM
| ||||
| ||||
__________________ |
|
18-07-2008, 07:57 PM
| ||||
| ||||
| Other IP Classes * Class B - Class B is used for medium-sized networks. A good example is a large college campus. IP addresses with a first octet from 128 to 191 are part of this class. Class B addresses also include the second octet as part of the Net identifier. The other two octets are used to identify each host. This means that there are 16,384 (214) Class B networks each with 65,534 (216 -2) possible hosts for a total of 1,073,741,824 (230) unique IP addresses. Class B networks make up a quarter of the total available IP addresses. Class B networks have a first bit value of 1 and a second bit value of 0 in the first octet. Net Host or Node 145.24. 53.107 There are five classes of IP addresses. * Class C - Class C addresses are commonly used for small to mid-size businesses. IP addresses with a first octet from 192 to 223 are part of this class. Class C addresses also include the second and third octets as part of the Net identifier. The last octet is used to identify each host. This means that there are 2,097,152 (221) Class C networks each with 254 (28 -2) possible hosts for a total of 536,870,912 (229) unique IP addresses. Class C networks make up an eighth of the total available IP addresses. Class C networks have a first bit value of 1, second bit value of 1 and a third bit value of 0 in the first octet. Net Host or Node 195.24.53. 107 * Class D - Used for multicasts, Class D is slightly different from the first three classes. It has a first bit value of 1, second bit value of 1, third bit value of 1 and fourth bit value of 0. The other 28 bits are used to identify the group of computers the multicast message is intended for. Class D accounts for 1/16th (268,435,456 or 228) of the available IP addresses. Net Host or Node 224. 24.53.107 * Class E - Class E is used for experimental purposes only. Like Class D, it is different from the first three classes. It has a first bit value of 1, second bit value of 1, third bit value of 1 and fourth bit value of 1. The other 28 bits are used to identify the group of computers the multicast message is intended for. Class E accounts for 1/16th (268,435,456 or 228) of the available IP addresses. Net Host or Node 240. 24.53.107 * Broadcast - Messages that are intended for all computers on a network are sent as broadcasts. These messages always use the IP address 255.255.255.255.
__________________ |
|
18-07-2008, 08:01 PM
| ||||
| ||||
| eik bat tello  ..ip address se ye to pata lag jata hay k kon se country se hain or kon se city see .. kya IP address se exact address bhi nikal sakta hain?? cos i've been told by SOMEONE that u can .. is that true..
__________________  “Nothing is given to man on earth - struggle is built into the nature of life, and conflict is possible - the hero is the man who lets no obstacle prevent him from pursuing the values he has CHOSEN.” |
|
18-07-2008, 08:15 PM
| ||||
| ||||
| hmm...i dunknow administration ki taraf se right hia yeh kehnay ka ya nahi...but yeah its true :$
__________________ |
|
19-07-2008, 01:00 PM
| ||||
| ||||
| Quote:
.. very interesting.. .. shukriyaa ..wohi soch raaha tha.. khair.. ab zara research shoro karo ..... samajh to gaye hi hogay  
__________________ “Nothing is given to man on earth - struggle is built into the nature of life, and conflict is possible - the hero is the man who lets no obstacle prevent him from pursuing the values he has CHOSEN.” |
|
19-07-2008, 01:06 PM
| ||||
| ||||
| Quote:
..mai soch rahi thee ke apko itni Mehnat karne ki kiya zaroorat??  ..i mean ke usi "SOMEONE" se hi puch le jo address chahiye ..jisne bataya tha apko.. ..samjh to gaye hoge aap
__________________ When the sun shines, we’ll shine together Told you I'll be here forever Said I'll always be a friend Took an oath I'ma stick it out till the end  Now that it's raining more than ever Know that we'll still have each other You can stand under my umbrella You can stand under my umbrella |
|
19-07-2008, 01:32 PM
| ||||
| ||||
| Quote:
saveraaaaaaaaaaaaaaaaaaaaaaaaaaaa .. tum kyo sochti ho itna .. or tumhe to pata haina k kabhi kabhi banda ziada sochay to waswasay .. weham sab mixed up ho jatay hain  .. poch to leta magar chori chupay kaam lagta na woh islyia socha phelay khabardar kar do ... samajh to tum bhi gaye hi hogii
__________________ “Nothing is given to man on earth - struggle is built into the nature of life, and conflict is possible - the hero is the man who lets no obstacle prevent him from pursuing the values he has CHOSEN.” |
|
19-07-2008, 01:40 PM
| ||||
| ||||
| haha yahan disscuion horhe h ya samjha jarha h
__________________ Nahi h woh Shakhs Muqadar main Phir bhi Us Se Miltey Hain...... Bara Pur Lutf Lagta Hai Muqadar Ko Saza Daina......,, |
|
19-07-2008, 01:45 PM
| ||||
| ||||
| Quote:
__________________ “Nothing is given to man on earth - struggle is built into the nature of life, and conflict is possible - the hero is the man who lets no obstacle prevent him from pursuing the values he has CHOSEN.” |
|
19-07-2008, 02:47 PM
| ||||
| ||||
| tum tu kudh he batao gay merey bagair poochney par bhi 
__________________ Nahi h woh Shakhs Muqadar main Phir bhi Us Se Miltey Hain...... Bara Pur Lutf Lagta Hai Muqadar Ko Saza Daina......,, |
|
19-07-2008, 02:53 PM
| ||||
| ||||
| Quote:
__________________ “Nothing is given to man on earth - struggle is built into the nature of life, and conflict is possible - the hero is the man who lets no obstacle prevent him from pursuing the values he has CHOSEN.” |
|
20-07-2008, 02:53 AM
| ||||
| ||||
| Quote:
..yeh bat bilkul theek kahi apne @ziyada sochne se waswasey..lekin apne Bas mai to nahi hoti na soche ..wo to kisi bin bulaye mehman ki tarha chali ati hain  ..acha ? @chori chupe..wese apas ki bat hai ..muje aesa keu lag raha hai ke aap usi "SOMEONE" ki hi address nikalwana chah rahe hain IP se  ..isliye us se puchna nahi chah rahe samjh to gaye hi hoge aap bhi
__________________ When the sun shines, we’ll shine together Told you I'll be here forever Said I'll always be a friend Took an oath I'ma stick it out till the end Now that it's raining more than ever Know that we'll still have each other You can stand under my umbrella You can stand under my umbrella |
|
20-07-2008, 04:28 AM
| ||||
| ||||
| Quote:
__________________ |
|
20-07-2008, 04:45 AM
| ||||
| ||||
| Quote:
..ziyada fast hai sath mai aik aur Number pe bhi fwd kar dena..wo text  ..samjh to gaye hi hoge
__________________ When the sun shines, we’ll shine together Told you I'll be here forever Said I'll always be a friend Took an oath I'ma stick it out till the end Now that it's raining more than ever Know that we'll still have each other You can stand under my umbrella You can stand under my umbrella |
|
20-07-2008, 12:42 PM
| ||||
| ||||
| Quote:
apnay mind ko control karna apnay bas may nahi hota??  .. ye kis nay kaha hay .. jis k nahi hota WOH bahanay banata hai han "US SOMEONE" ko bohot shoq hay IP's ka ... socha.. ab zara "US SOMEONE" ko bata do.. k SHOQ ka KOI MOOL nahi .. koi bhi kabhi bhi kisi waqt bhi SHOQIYA ho sakta hay  samajh to gaye hi hogi naa
__________________ “Nothing is given to man on earth - struggle is built into the nature of life, and conflict is possible - the hero is the man who lets no obstacle prevent him from pursuing the values he has CHOSEN.” |
|
20-07-2008, 12:45 PM
| ||||
| ||||
| Quote:
email plzzzz... fax kharab hay aj kaal
__________________ “Nothing is given to man on earth - struggle is built into the nature of life, and conflict is possible - the hero is the man who lets no obstacle prevent him from pursuing the values he has CHOSEN.” |
|
20-07-2008, 12:46 PM
| ||||
| ||||
| Quote:
kyo k text k liya phelay likhna paray ga.. or jo INFO ye NIKAL chuka hay wo copy paste kar k .. send kar sakta hay via email ab khud batao kya fast hai?
__________________ “Nothing is given to man on earth - struggle is built into the nature of life, and conflict is possible - the hero is the man who lets no obstacle prevent him from pursuing the values he has CHOSEN.” |
|
20-07-2008, 12:47 PM
| ||||
| ||||
| Quote:
|
