Three-way handshake in Computer Networks - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the first step in the TCP three-way handshake.

Computer Networks

The client sends a [1] packet to initiate the connection.

Drag options to blanks, or click blank then click option'

ASYN

BACK

CFIN

DRST

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing SYN with ACK or FIN packets.

Thinking the handshake starts with an ACK.

The first step in the TCP three-way handshake is the client sending a SYN (synchronize) packet to the server to request a connection.

2fill in blank

medium

Complete the code to identify the second step in the TCP three-way handshake.

Computer Networks

The server responds with a [1] packet to acknowledge the client's request.

Drag options to blanks, or click blank then click option'

AFIN

BACK

CRST

DSYN-ACK

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing only SYN or only ACK instead of SYN-ACK.

Confusing this step with connection termination.

The server replies with a SYN-ACK packet, which means it acknowledges the client's SYN and also sends its own SYN to synchronize.

3fill in blank

hard

Fix the error in the description of the third step of the TCP handshake.

Computer Networks

The client sends a [1] packet to confirm the connection and complete the handshake.

Drag options to blanks, or click blank then click option'

ASYN

BFIN

CACK

DRST

Attempts:

3 left

💡 Hint

Common Mistakes

Using SYN or FIN instead of ACK for the final step.

Confusing connection setup with teardown.

The client sends an ACK packet to acknowledge the server's SYN-ACK, completing the three-way handshake.

4fill in blank

hard

Fill both blanks to complete the explanation of the TCP three-way handshake steps.

Computer Networks

Step 1: Client sends [1]. Step 2: Server replies with [2].

Drag options to blanks, or click blank then click option'

ASYN

BACK

CSYN-ACK

DFIN

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up SYN and ACK in the first step.

Using FIN instead of SYN-ACK in the second step.

The client starts by sending a SYN packet. The server responds with a SYN-ACK packet to acknowledge and synchronize.

5fill in blank

hard

Fill all three blanks to describe the full TCP three-way handshake process.

Computer Networks

1) Client sends [1]. 2) Server replies with [2]. 3) Client sends [3] to establish connection.

Drag options to blanks, or click blank then click option'

ASYN

BACK

CSYN-ACK

DFIN

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the order of SYN-ACK and ACK.

Using FIN instead of ACK in the last step.

The handshake starts with the client sending a SYN. The server responds with SYN-ACK. Finally, the client sends an ACK to complete the connection setup.