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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 🔴UGC NET qualified🔴🌟YouTuber ☆🌟BOOK published on LINUX ADMINISTRATION by kalyani publish

U
Unacademy user
good morning mam.i want to take plus course for dec plz tell me full detail about it
just love u mam...itna difficult lghta tha subnet..ab itne esly nikal raha hai ans...just bcoz of u...God bless u mam
Nisha Mittal
5 months ago
Welcome anshu 😊
Mam same network p two host k pa's same address h it is possible HOST A 158.80.164.100 HOST B 158.80.164.100
  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