CompTIA A+ Certification Core 2 (220-1102) - Network Address Translation (NAT)

The video tutorial explains Network Address Translation (NAT) and its significance in managing IP addresses. It covers the transition from traditional IP address assignment to using NAT, which allows multiple devices to share a single public IP address while using private IPs internally. The tutorial also discusses the workings of gateway routers, the benefits of NAT in conserving IP addresses, and its limitations, such as potential performance slowdowns and restrictions on hosting servers within a LAN.

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

• To provide wireless connectivity

• To allow multiple devices to share a single public IP address

• To enhance data encryption

• To increase internet speed

What are the two main connections found on a typical small office or home office router?

• USB and HDMI

• Ethernet and Coaxial

• LAN and ISP

• Bluetooth and Wi-Fi

Before NAT, how were IP addresses assigned to devices on a network?

• IP addresses were not used

• IP addresses were assigned randomly

• Devices shared a single IP address

• Each device had a unique public IP address

What is a major downside of the traditional IP address assignment method?

• It was too secure

• It consumed too many IP addresses

• It was too cheap

• It was too fast

How does NAT improve security for devices on a local network?

• By increasing internet speed

• By making devices invisible to the internet

• By providing a firewall

• By encrypting all data

What happens to a private IP address when it is sent out through a NAT-enabled router?

• It is replaced with a public IP address

• It is duplicated

• It is deleted

• It is encrypted

What is a minor downside of using NAT?

• It requires more hardware

• It increases the number of IP addresses needed

• It makes devices more visible to the internet

• It slows down the network slightly