Understanding IP, DNS, and MAC Addresses WITH MCQ TEST

 

IP, DNS, and MAC Addresses

IP, DNS, and MAC addresses are crucial for how devices communicate on networks.

• IP addresses are logical addresses assigned to devices, allowing them to be identified on a network.
• DNS translates human-readable domain names (like google.com) to IP addresses.
• MAC addresses are unique physical addresses assigned to network interfaces, ensuring data is delivered to the correct device on a local network.

📍 IP Addresses

• Purpose: Identify devices on a network for communication.
• Type: Logical addresses, can change depending on the network.
• Example: 192.168.1.10
• Uses: Routing data across networks, enabling communication between devices.

🌐 DNS (Domain Name System)

• Purpose: Translate domain names (like google.com) to IP addresses for user convenience.
• How it Works: A hierarchical system of servers maintaining a database of domain names and their corresponding IPs.
• Example: When you type google.com, DNS resolves it to the IP address of Google’s server.

🔒 MAC Addresses

• Purpose: Identify devices on a local network for data delivery within the network.
• Type: Physical address, assigned by the manufacturer and usually permanent.
• Example: 00:1A:2B:3C:DE:F0
• Uses: Ensures data packets reach the correct device on the same local network.

🔁 Key Differences

• IP addresses are logical, while MAC addresses are physical.
• IP addresses can change, while MAC addresses are usually permanent.
• IP addresses are used for communication between networks.
• MAC addresses are used for communication within a local network.

✅ Summary

IP addresses allow devices to be found on the internet. DNS translates domain names to IP addresses. MAC addresses ensure data reaches the correct device on the local network.

MCQs with correct answers and explanations based on IP, DNS, and MAC addresses