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Message: <blockquote data-quote="Nebuchadnezzer" data-source="post: 18047902" data-attributes="member: 35040">* මේකෙ මචං වෙන්නේ /29 න් කියන්නේ උඹ දාන Network IP එකෙන් මුල් bit 29ක් network එක හදුනා ගන්න යොදා ගන්නවා (සම්පූර්ණ IP address eka 32bits). එක උඹට වෙනස් කරන්න බෑ (Land line phn no වල Area code එක වගෙ). * එතකොට උඹට ඉතිරි bits 3යි (bits 32 න් Network එකට bits 29ක් ගියාම ඉතුරු 3යි). මේ bits 3 භාවිතා කරලා උඹට IP address 8ක් හදාගන්න පුළුවන් (2^3 - අර bits 3 දෙකේ බලයක් විදියට ගත්තම.) * ඒ IP address 8න් පළවෙනි එක Network address එක විදියට වෙන් කරනවා. ( මේකෙන් තමා උඹේ network එක අදුනගන්නේ) මේවා සම්මතයන්.* අන්තිම address එක Broadcast address එක විදියට අයින් වෙනවා (උඹෙ මුළු network එකටම message එක් යවන්න භාවිතා කරන්නේ මේ address එක) මේවා සම්මතයන්. * ඉතුරු address 6 තමයි උඹට Network එකේ අනිත් වැඩ වලට භාවිතා කරන්න පුළුවන් (උඹ දාපු පික් එකේ usable කියලා තියෙන්නේ ඒ address 6 තමයි). * First host address කියන්නේ ඒ ඉතුරු 6න් පළවෙනි එක. * Last host address කියන්නේ උඹට Computer එකකට හරි වෙනත් device එකකට හරි දෙන්න පුළුවන් අන්තිම IP එක. <img src="/styles/default/xenforo/smilies/default/happy.gif"  class="smilie" loading="lazy" alt=":)" title="Happy    :)" data-shortname=":)" />තේරුනාද මන්දා...<img src="/styles/default/xenforo/smilies/default/baffled.gif"  class="smilie" loading="lazy" alt=":baffled:" title="Baffled    :baffled:" data-shortname=":baffled:" />මේක ටිකක් ලොකු කථාවක්. උඹට IP address ගැන මූලික දැනීම තියෙනවනම් එච්චර අවුලක් නෑ.ප.ලි. මූලික අදහසක් නැතිනම් පහල විස්තරය බලන්න.... <img src="/styles/default/xenforo/smilies/default/wink.gif"  class="smilie" loading="lazy" alt=";)" title="Wink    ;)" data-shortname=";)" />[YOUTUBE]KFooN7Mu0IM[/YOUTUBE]This is a video created to help people understand the basics of IPv4 Addressing and how it works.Script:This video explains what IP addressing is and why it is used.For  computers to communicate with each other through a network it is  necessary to be able to identify specific computers over a network.An example of an IP address is 195.195.92.161 this translates to 11000011.11000011.01011100.10100001 in binary. These numbers may look complicated but when explained they are very simpleThe use of IP addressing is no different to the use of a phone number.Phone numbers are used as a way of communicating with specific people. Phone numbers use both and area code and identifier. Ip addressing uses a similar method of identification. It uses a network number and an identifier number.For example if we have 3 separate networks all with 5 computers. There would be 3 network different network address's .1.1, 1.2, 1.3, 2.1 etc...IP addresses are in total 32 bits long.11000011110000110101110010100001Each string of 32 bits is then split into 4 equal parts of 8 bits11000011.11000011.01011100.10100001These four strings of 8 bits are then converted into decimal numbers for ease of human use.195.195.92.161This  IP address would then be split up into two parts, one is used to  identify the network and one is then used to identify a computer hosted  on that network.The part of the IP address used to identify varies depending on the CLASS. There are 5 classes of IP address, A,B,C,D and E. A, B, and C are used for assigning IP addressesClasses D and E are reserved for special use.D is used for multicastingE is reserved for experimentationA, B and C are the we'll be looking at.Now the difference between these three types of IP address is how it is split between network and host.Class A addresses use the first part of the IP address only when identifying a network.XXXXXXXX.ZZZZZZZZ.ZZZZZZZZ.ZZZZZZZZX = Network partZ= Host partIn  the network part of a class A address the leading bit is a 0 allowing  the last 7 bits to be used as network identifiers. This allows Class A  to have 2^7 networks (128)There are 24 bits left in the host  part of a class A IP address allowing them to be used to identify hosts  within a network. This means each network on this system could have 2^24  hosts (16,777,216)Class B addresses use the first part of the IP address only when identifying a network.XXXXXXXX.XXXXXXXX.ZZZZZZZZ.ZZZZZZZZX = Network partZ= Host partIn  the network part of a class A address the leading bits are 10  allowing  the last 14 bits to be used as network identifiers. This allows Class A  to have 2^14 networks (16,384)There are 16 bits left in the  host part of a class A IP address allowing them to be used to identify  hosts within a network. This means each network on this system could  have 2^16 hosts (65,536)Class C addresses use the first part of the IP address only when identifying a network.XXXXXXXX.XXXXXXXX.XXXXXXXX.ZZZZZZZZX = Network partZ= Host partIn  the network part of a class A address the leading bits are 110 allowing  the last 21 bits to be used as network identifiers. This allows Class A  to have 2^21 networks (2,097,152)There are 8 bits left in the  host part of a class A IP address allowing them to be used to identify  hosts within a network. This means each network on this system could  have 2^8 hosts (256)</blockquote>

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