Networking - TCP/IP - Discussion

An address is a data structure understood by a network which uniquely identifies the recipient within the network. Addresses in other places than computer networks: Addresses are used by the postal system to allow a postman to find a person's house; to allow a computer to uniquely identify a location in memory.

You should add host addresses for systems that will communicate frequently with the system. You can:

View the entries in the hosts table,
Add an entry to the list of hosts,
Modify the IP address of a host,
Delete a host entry.

Simple there are some ranges for private address.
10.0.0.0 - 10.255.255.255

172.16.0.0 - 172.31.255.25

192.168.0.0 - 192.168.255.255
in option A first block is 12 so crosses range. option B first block is 168 does not come in to the range. option c first block 172 is ok but second block is 15 but range start from 16 so wrong. option d is correct one

Class Private Networks Subnet Mask Address Range.

A 10.0.0.0 255.0.0.0 10.0.0.0 - 10.255.255.255.

B 172.16.0.0-172.31.0.0 255.240.0.0 172.16.0.0-172.31.255.255.

C 192.168.0.0 255.255.0.0.

Address range for C-class 192.168.0.0-192.168.255.255.

In one Particular address like 172.31.255.25.
What is the host address value?

What is the IP address value?
Please can anyone explain?

But class of these IP address can be easily guessed on just seeing them and their respective private address can be get further.

How can we understand IP address simple? And has it constant and no change values.

Which of the following do transport layer protocol for application layer protocol?

But in this question you are not mentioned particular class IP address?

I need clear explanation about this question...

Security maintain in private IP address or not?