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Overview of Course and Default Subnet Mask (in Hindi )
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In this lesson we will discuss topic of subnetting , subnet mask of computer network for NTA NET computer science, KVS PGT aspirants. Cover all these lessons in a sequence manner for better understanding.

Nisha Mittal is teaching live on Unacademy Plus

Nisha Mittal
🌟 MCA Gold Medalist 🌟 Star Educator 🌟Gate Qualified 🌟YouTuber ☆🌟BOOK published on LINUX ADMINISTRATION by kalyani publisher ☆🌟 7+ years teac

U
Unacademy user
Thank you for the video sir
mam address of host a and host b is same means its only one device how they communicate?
Hs
Mam your way of teaching is good but ye to unacademy sirf AAP ki 6 ya 7 vedio hai mam baki vedio AAP kab upload karo gye
Nisha Mittal
6 months ago
harsh more than 35 videos are availbale here in unacademy. plz check
Nisha Mittal
6 months ago
in each course I've posted many videos .... you can complete your course here ..
Hs
Harsh Deo singh
6 months ago
Got it mam thanx ...and soory
N
mam or lectures kb daloge aap computer network ke. Sirf 2 hi topic ke dale hai aapne
Nisha Mittal
6 months ago
Nishi I'm working on that dear
N
Nishi
6 months ago
mam plz fast jo imp topics ho cn ke nta ugc net Dec mein aate ho vo hi dal do phle
mam exam mein number of host v pooch liye jaate hain?? 2^24=16 million??
  1. Subnetting and Supernetting


  2. IPv4 Address Classes CLASS Class A 1-127 Class B 128-191 Class C 192-223 Class D 224-239 Default Subnet Mask 255.0.0.0 255.255.0.0 255.255.255.0 First Octet Range


  3. Subnet Mask CLASS First Octet Range Class A1-127 Class B 128-191 Class C 192-223 Class D 224-239 Default Subnet Mask 255.0.0.0 255.255.0.0 255.255.255.0 One Part of IP Address identifies the Network So Subnet Mask is required to Provide this DISTINCTION Other Part of IP Address identifies the Host


  4. Subnetting (Class B Address Example) | 0 | NET ID (14 Bits) | HOST ID (16 Bit) Network Address IP Address 158. 80.164.3 Subnet Mask |255.2550.0


  5. Subnetting (Class B Address Example) IP Address 158.80. 164.3 Subnet Mask 255. 255- 0.0 First 16 Bit Of Subnet Mask Are Set to1 Last 16 Bit Of Subnet Mask Are Set to 0


  6. Subnetting (Class B Address Example) Thus First 16 Bit (158.80) Identify the network Thus 16 Bits (164.3) identify unique Host on the network IP Address 158.80. 164. 3 Subnet Mask 255. 255. 0.0 First 16 Bit Of Subnet Mask Are Set to 1 Last 16 Bit Of Subnet Mask Are Set to O


  7. Host on same Network (will have identical network address and communicate freely) Host on different Network (can't communicate without an intermediating device) Host A158. 80. 164.100 Host A 158. 80. 164.100 Host B 158. 80. 164. 100 Host B 158. 85 . 164.101


  8. Host on same Network (will have identical network address and communicate freely) Host on different Network (can't communicate without an intermediating device) Host A 158.80 164. Host B 158. 80 .164. 100 100 Host A 58, 80.164. 100 Host B 158, 85.164. 101 Both sh re same network address Which is determined by 255.255.0.0 Subnet mask 255.255.0.0 Subnet mask Has remained same Both share different network address


  9. Host on same Network (will have identical network address and communicate freely) Host on different Network (can't communicate without an intermediating device) Host A 158, 80 164.100 Host A 158, 80.164, 100 Host B 158. 80.164.100 Host B 158.85. 164.101 Which is determined Both sh re same network address 255.255.0.0 Subnet mask Has emained same 255.255.0.0 Subnet mask Both share different network address NOTE: Thus two Hosts that are not on same network can't communicate without a ROUTER between them