50.6k views
4 votes
What is used to identify a program or service running on a computer in order to communicate over the network?

a) Port number
b) IP address
c) Subnet mask
d) Firewall

1 Answer

2 votes

Final answer:

The correct answer is a) Port number. A port number is used to identify a program or service running on a computer in order to communicate over the network.

Step-by-step explanation:

The correct answer is a) Port number. A port number is used to identify a program or service running on a computer in order to communicate over the network. It is like a virtual door through which data can flow in and out of a computer. For example, when you access a website, your web browser uses port 80 for HTTP or port 443 for HTTPS.

User Fangming
by
7.2k points