IPv4 address structure in Computer Networks - Step-by-Step Execution

Concept Flow - IPv4 address structure

Start: 32 bits total

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Divide into 4 parts

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Each part = 8 bits (1 byte)

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Convert each 8 bits to decimal

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Join decimals with dots

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Result: IPv4 address in dotted decimal

An IPv4 address is made of 32 bits split into four 8-bit parts, each converted to a decimal number and joined by dots.

Execution Sample

Computer Networks

11000000.10101000.00000001.00000001
192.168.1.1

Shows how a 32-bit binary IPv4 address is divided into four bytes and converted to dotted decimal format.

Analysis Table

Step	Bits Processed	Binary Segment	Decimal Value	Partial IPv4 Address
1	Bits 1-8	11000000	192	192
2	Bits 9-16	10101000	168	192.168
3	Bits 17-24	00000001	1	192.168.1
4	Bits 25-32	00000001	1	192.168.1.1
5	End	-	-	IPv4 address complete

💡 All 32 bits processed and converted into four decimal numbers joined by dots.

State Tracker

Variable	Start	After 1	After 2	After 3	After 4	Final
binary_address	11000000101010000000000100000001	11000000	10101000	00000001	00000001	processed
decimal_parts	[]	[192]	[192,168]	[192,168,1]	[192,168,1,1]	complete
ipv4_address	""	"192"	"192.168"	"192.168.1"	"192.168.1.1"	final

Key Insights - 3 Insights

Why do we split the 32 bits into four parts of 8 bits each?

Because each 8-bit part represents one number between 0 and 255, making the address easier to read and use, as shown in steps 1 to 4 in the execution_table.

Why do we convert binary to decimal instead of keeping it in binary?

Decimal numbers are easier for humans to read and remember. The conversion in each step of the execution_table shows this simplification.

What does each decimal number in the IPv4 address represent?

Each decimal number corresponds to one byte (8 bits) of the full 32-bit address, as tracked in decimal_parts in variable_tracker.

Visual Quiz - 3 Questions

Look at the execution_table at step 3, what is the decimal value of the third 8-bit segment?

A 1

B 168

C 192

D 255

💡 Hint

Check the 'Decimal Value' column at step 3 in the execution_table.

At which step does the IPv4 address become complete in the execution_table?

A Step 2

B Step 5

C Step 4

D Step 3

💡 Hint

Look at the 'Partial IPv4 Address' column and the exit_note in the execution_table.

If the second 8-bit segment was '11111111', what decimal value would appear in the execution_table at step 2?

A 111

B 128

C 255

D 0

💡 Hint

Recall that '11111111' in binary equals 255 in decimal, as shown in the conversion steps.

Concept Snapshot

IPv4 address is 32 bits long.
Split into 4 parts of 8 bits each.
Each 8-bit part converts to decimal (0-255).
Join decimals with dots to form address.
Example: 192.168.1.1

Full Transcript

An IPv4 address consists of 32 bits. These bits are divided into four equal parts, each containing 8 bits. Each 8-bit segment is converted from binary to a decimal number between 0 and 255. These four decimal numbers are then joined together with dots to form the familiar dotted decimal IPv4 address format. For example, the binary address 11000000.10101000.00000001.00000001 converts to 192.168.1.1. This process makes the address easier for humans to read and use.