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IPv4 addressing system already gives information about network and host. Along with the Internet Protocol address of host, subnet mask is also needed by the routers inorder to direct the packet to intended network. Host doesn’t redirect packets, then Why does host need subnet mask?
  • a)
    Host need subnet mask for ANDing process inorder to know own network.
  • b)
    To get the IP address of destination host
  • c)
    To know if intended packet is supposed to send to router or not.
  • d)
    To resolve the logical address from DNS server.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
IPv4 addressing system already gives information about network and hos...
We know Subnet mask is needed by routers (stored in routing table) inorder to direct the packet to intended network. But how will host know whether the packet belongs to its own network, whether to send the packet to router or not. For this reason, even host needs the Subnet mask.
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IPv4 addressing system already gives information about network and hos...


Why does host need subnet mask?
The subnet mask is required by the host in order to determine whether the destination IP address is within the same network or a different network. This is essential for the host to know whether to send the packet directly to the intended host or to route it through a router.
Key points:
- Network Determination: The subnet mask helps the host in performing a bitwise AND operation with its own IP address to determine the network portion of the IP address.
- Comparison: By comparing the network portion of the destination IP address with its own network portion, the host can determine if the packet needs to be sent to a router for further routing.
- Routing Decision: If the destination IP address is in the same network, the host can directly send the packet to the intended host. If it is in a different network, the packet needs to be forwarded to the router for further processing.
In conclusion, the subnet mask is a crucial component for hosts in an IPv4 addressing system to accurately determine whether a packet needs to be sent directly to the destination host or forwarded to a router for routing to a different network.
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IPv4 addressing system already gives information about network and host. Along with the Internet Protocol address of host, subnet mask is also needed by the routers inorder to direct the packet to intended network. Host doesn’t redirect packets, then Why does host need subnet mask?a)Host need subnet mask for ANDing process inorder to know own network.b)To get the IP address of destination hostc)To know if intended packet is supposed to send to router or not.d)To resolve the logical address from DNS server.Correct answer is option 'C'. Can you explain this answer?
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IPv4 addressing system already gives information about network and host. Along with the Internet Protocol address of host, subnet mask is also needed by the routers inorder to direct the packet to intended network. Host doesn’t redirect packets, then Why does host need subnet mask?a)Host need subnet mask for ANDing process inorder to know own network.b)To get the IP address of destination hostc)To know if intended packet is supposed to send to router or not.d)To resolve the logical address from DNS server.Correct answer is option 'C'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about IPv4 addressing system already gives information about network and host. Along with the Internet Protocol address of host, subnet mask is also needed by the routers inorder to direct the packet to intended network. Host doesn’t redirect packets, then Why does host need subnet mask?a)Host need subnet mask for ANDing process inorder to know own network.b)To get the IP address of destination hostc)To know if intended packet is supposed to send to router or not.d)To resolve the logical address from DNS server.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for IPv4 addressing system already gives information about network and host. Along with the Internet Protocol address of host, subnet mask is also needed by the routers inorder to direct the packet to intended network. Host doesn’t redirect packets, then Why does host need subnet mask?a)Host need subnet mask for ANDing process inorder to know own network.b)To get the IP address of destination hostc)To know if intended packet is supposed to send to router or not.d)To resolve the logical address from DNS server.Correct answer is option 'C'. Can you explain this answer?.
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