Question

Draw the finite state machine (FSM) for the receiver side of protocol rdt3.0.

Answer 1

The finite state machine (FSM) for the receiver side of protocol rdt3.0 consists of three main states: WAIT_0, WAIT_1, and ACK. In the WAIT_0 state, the receiver is expecting a packet with sequence number 0. In the WAIT_1 state, the receiver is expecting a packet with sequence number 1. The ACK state indicates that the receiver has successfully received and acknowledged the packet.

Step-by-step explanation:

Finite State Machine (FSM) for the Receiver Side of Protocol rdt3.0

A finite state machine is a mathematical model used to design and analyze sequential systems, such as protocols. In the receiver side of protocol rdt3.0, there are three main states: WAIT_0, WAIT_1, and ACK. The FSM can be represented as follows:

1. 
   
3. WAIT_0: This state indicates that the receiver is expecting a packet with sequence number 0. If it receives a packet with sequence number 0, it sends an ACK0 and transitions to the WAIT_1 state. If it receives a packet with sequence number 1, it sends an ACK1 and stays in the WAIT_0 state.
4. 
   
6. WAIT_1: This state indicates that the receiver is expecting a packet with sequence number 1. If it receives a packet with sequence number 1, it sends an ACK1 and transitions to the WAIT_0 state. If it receives a packet with sequence number 0, it sends an ACK0 and stays in the WAIT_1 state.
7. 
   
9. ACK: This state indicates that the receiver has successfully received and acknowledged the packet. It can transition back to the WAIT_0 or WAIT_1 state depending on the received sequence number.

These states and transitions form the FSM for the receiver side of protocol rdt3.0.