Data Communication and Computer Networks - Functions of OSI and TCP/IP Layers
- Option : C
- Explanation : Given IP addresses are of Class C
default Mask for class C = 24
The given mask is 11 bits 11111111 11111111 11111111 11100000
subnet ID: 3 bits
existing subnets: 011, 010 and 100
- Option : B
- Explanation : For ip address 192.168.1.110/28
For network address keep Network bits as it is and put host bits =0 in any given IP address.
Network address
= 192.168.1.01100000 ⟶ 192.168.1.96
For: 192.168.1.97/28
Network address
= 192.168.1.01100000 ⟶ 192.168.1.96
- Option : D
- Explanation : Given : 10.105.1.113 and 10.105.1.91
When these are in same network, then AND with netmask give the address of same ID otherwise these are in different class in these only AND with 255.255.255.224 are in different class
This is 96 and 64. Then these are different ID means 10.105.1.96 and 10.105.1.64 are different ID. So this is not in same network.
When we do the similar operation with 2nd IP, it gives 10.105.1.64
Here, it gives different IP
but for the rest it gives same IP.
25. In the I Pv4 addressing format, the number of networks allowed under Class C addresses is
- Option : C
- Explanation : For class C address, size of network field is 24 bits. But first 3 bits are fixed as 110; hence total number of networks possible is 221
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