IPv4 address structure in Computer Networks - Practice Problems & Coding Challenges

Challenge - 5 Problems

📋 Factual

intermediate

Understanding IPv4 Address Format

What is the correct format of an IPv4 address?

A Eight groups of hexadecimal numbers separated by colons

B Four groups of decimal numbers separated by dots, each ranging from 0 to 255

C A single 32-bit binary number without separators

D Four groups of decimal numbers separated by commas, each ranging from 0 to 999

💡 Hint

Think about how many parts an IPv4 address has and the range of each part.

An IPv4 address consists of four decimal numbers separated by dots. Each number is between 0 and 255 because each represents 8 bits (1 byte) of the 32-bit address.

🧠 Conceptual

intermediate

Binary Representation of IPv4 Address

How many bits are there in total in an IPv4 address, and how are they divided?

A 16 bits total, divided into two 8-bit sections

B 64 bits total, divided into eight 8-bit sections

C 32 bits total, divided into four 8-bit sections

D 128 bits total, divided into sixteen 8-bit sections

💡 Hint

Remember that each decimal number in IPv4 corresponds to 8 bits.

IPv4 addresses are 32 bits long, split into four parts of 8 bits each. Each part is represented as a decimal number from 0 to 255.

🔍 Analysis

advanced

Identifying Valid IPv4 Addresses

Which of the following IPv4 addresses is invalid?

A 256.100.50.25

B 192.168.1.1

C 10.0.0.255

D 172.16.254.3

💡 Hint

Check if each number in the address is within the allowed range.

Each part of an IPv4 address must be between 0 and 255. The number 256 is outside this range, making option A invalid.

❓ Comparison

advanced

Comparing IPv4 and IPv6 Address Lengths

How does the length of an IPv4 address compare to an IPv6 address?

A IPv4 addresses are 32 bits long; IPv6 addresses are 128 bits long

B IPv4 addresses are 128 bits long; IPv6 addresses are 32 bits long

C Both IPv4 and IPv6 addresses are 64 bits long

D IPv4 addresses are 64 bits long; IPv6 addresses are 128 bits long

💡 Hint

IPv6 was designed to provide a much larger address space than IPv4.

IPv4 addresses use 32 bits, while IPv6 addresses use 128 bits to allow for many more unique addresses.

❓ Reasoning

expert

Calculating Number of Unique IPv4 Addresses

Given the structure of an IPv4 address, how many unique addresses can be created?

A Approximately 65,536 unique addresses

B Approximately 1 million unique addresses

C Approximately 340 undecillion unique addresses

D Approximately 4.3 billion unique addresses

💡 Hint

Calculate 2 raised to the power of the total bits in an IPv4 address.

IPv4 addresses have 32 bits, so the total number of unique addresses is 2^32, which is about 4.3 billion.