World of Computer Networking Your CCNA start - Private versus Public Internet Protocol (IP) Addresses

The video tutorial explains the difference between private and public IP addresses. Private IPs are not routable on the global internet, meaning they cannot directly access external networks. Public IPs, however, allow devices to connect to the internet. The tutorial also introduces Network Address Translation (NAT), a technology that enables devices with private IPs to access the internet by altering the source address in packets. The video concludes with a brief mention of different private IP address ranges.

What is a characteristic of private IP addresses?

• They are assigned by Internet providers.

• They are not routable on the global Internet.

• They are unique worldwide.

• They are routable on the global Internet.

Why might a device in a private network be unable to access a public web server?

• The device's IP address is not in the public range.

• The device is not connected to a router.

• The device's IP address is too long.

• The device's IP address is not unique.

What role does a router with a public IP address play in a private network?

• It changes private IP addresses to public ones.

• It assigns private IP addresses to devices.

• It blocks all outgoing traffic.

• It facilitates access to Internet resources.

How can devices in a private network access the Internet?

• By changing their IP addresses to public ones.

• By using a VPN service.

• Through Network Address Translation (NAT).

• By using a direct connection to a public IP.

What is the purpose of Network Address Translation (NAT)?

• To assign new IP addresses to devices.

• To create a new private network.

• To block incoming Internet traffic.

• To change source addresses in packets for Internet access.