IP address

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CLASS A
CLASS B
CLASS C
CLASS D
CLASS E
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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.

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



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.
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نقلته من موقع https://computer.howstuffworks.com/question549.htm

عزيزى أنور
شكرا لمحاولتك فى المساعده ولكن مع الاسف لم افهم اى شئ كما ان الشرح باللغه الانجليزيه فكان من الصعب ان افهم :(
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اخي الكريم

الموضوع بسيط ولكن بدك تركز شوي

صنفو الايب على اساس الخانات وعدد الشبكات والهوست يللي يمكن يولدها
Class A هي من رقم 1.0.0.0 حتى الرقم 126.255.255.255
ويكون قناع الشبكة الفرعية (( هذا اذا كان عندك اي بي على سبيل المثال 122.188.2.13 وبدك تعمل منو شبكة فرعية تستخدم فيعا Subnet mask)) المهم يكون القناع فيها هو 255.0.0.0

ملاحظة:
127.0.0.0 هو محجوز ولا يمكن لاحد استخدامه وهو مخصص حتى تعمل ping على بطاقة الشبكة عندك

CLASS B يبدا من 128.0.0.0 حتى 191.255.255.255 ويكون قناع الشبكة الفرعية له 255.255.0.0

CLASS C
يبدا من 192.0.0.1 وينتهي عندي 223.255.255.255 ويكون قناع الشبكة الفرعية هو 255.255.255.0

CLASS D يبدا من 224.0.0.0 ونتهي في 239.255.255.255 وهذا الكلاس غير قابل للعمل حاليا وهو متروك للمستقبل حيث سوف يتم تنزيل IP VERSION 6 اي ان رقم الاي بي سيحوي على ست خانات بدل من اربعة

CLASS E يبدا من 240.0.0.0 وينتهي في 255.255.255.255 وهو ايضا مثل الذي قبله للمستقبل

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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

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