The network administrator has been asked to give reasons for moving from IPv4 to IPv6. What are two valid reasons for adopting IPv6 over IPv4? (Choose two)
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IPv6 (Internet Protocol version 6) is the next generation of IP addresses and offers many advantages over the current IPv4 protocol. Here are two valid reasons for adopting IPv6 over IPv4:
One of the most important reasons to move to IPv6 is the depletion of available IPv4 addresses. IPv4 has a limited number of IP addresses (approximately 4.3 billion) and as more devices come online, there are not enough addresses to assign to them. This has led to the development of NAT (Network Address Translation) as a way to conserve IPv4 addresses. However, NAT can cause issues with certain applications, such as peer-to-peer networking, and can create additional complexity for network administrators.
IPv6, on the other hand, uses 128-bit addresses which can support an almost unlimited number of devices (approximately 3.4×10^38). This allows every device to have its own unique IP address and eliminates the need for NAT.
IPv6 offers enhanced security features over IPv4. For example, IPv6 has built-in support for IPsec (Internet Protocol Security), a suite of protocols that provides secure communication over the internet. IPsec provides authentication and encryption to ensure that packets are not tampered with or intercepted during transmission.
In addition, IPv6 eliminates the need for broadcast packets, which can be used in denial of service (DoS) attacks. Instead, IPv6 uses multicast and anycast addressing, which allows packets to be sent to specific groups of devices or the nearest available device. This reduces the amount of unnecessary traffic on the network and makes it more difficult for attackers to launch DoS attacks.
Other advantages of IPv6 over IPv4 include more efficient routing, improved mobility support, and autoconfiguration, which allows devices to automatically configure their own IPv6 addresses.
In conclusion, the depletion of IPv4 addresses and the enhanced security features of IPv6 are two valid reasons for adopting IPv6 over IPv4.