Question

A user opens three browsers on the same PC to access to search for certification course information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. Which information is used by the TCP/IP protocol stack in the PC to identify which of the three web browsers should receive the reply?

1. the destination IP address
2. the destination port number
3. the source IP address
4. the source port number

Answer 1

The TCP/IP protocol stack in the PC identifies the web browser using 1) the destination IP address and 2) the destination port number. Hence, 1 and 2 are correct.

Step-by-step explanation:

The TCP/IP protocol stack in the PC uses the destination IP address and the destination port number to identify which of the three web browsers should receive the reply from the Cisco web server.

The IP address is a unique identifier assigned to each device on a network, and the destination IP address specifies the intended recipient of the data.

The port number is a logical address within the IP address that helps to identify different applications or services running on the device.