What is a domain name, and why is it easier for humans to remember than an IP address?

What is a domain name, and why is it easier for humans to remember than an IP address?

• A. A domain name is a human-readable address mapped to an IP address
• B. A domain name is a protocol used for email routing
• C. A domain name is a hardware component in routers
• D. A domain name is a type of encryption key

Answer: (A)

A domain name is a human-readable address mapped to an IP address. Humans remember words like example.com far more easily than long strings of numbers. On the internet, devices are identified by IP addresses, which are the actual numbers used to route traffic. But remembering a name is much simpler, so domain names act as friendly shortcuts. When you type a domain name, a system called the Domain Name System translates that name into the corresponding IP address. Your computer asks a DNS resolver, which may query several servers, to find the numeric address. Once the IP is found, your browser connects to that address and loads the site. This separation of human-friendly names from numeric addresses is what makes browsing intuitive and reliable, even if the underlying IPs change over time. The other options don’t fit because a domain name is not a protocol used for email routing, it’s not a hardware component in routers, and it’s not a kind of encryption key.

A domain name is a human-readable address mapped to an IP address. Humans remember words like example.com far more easily than long strings of numbers. On the internet, devices are identified by IP addresses, which are the actual numbers used to route traffic. But remembering a name is much simpler, so domain names act as friendly shortcuts.

When you type a domain name, a system called the Domain Name System translates that name into the corresponding IP address. Your computer asks a DNS resolver, which may query several servers, to find the numeric address. Once the IP is found, your browser connects to that address and loads the site. This separation of human-friendly names from numeric addresses is what makes browsing intuitive and reliable, even if the underlying IPs change over time.

The other options don’t fit because a domain name is not a protocol used for email routing, it’s not a hardware component in routers, and it’s not a kind of encryption key.