Question

Which three mechanisms are used to extend the lifetime and usefulness of IPv4? (Choose three.)

A) Network Address Translation (NAT)

B) Classless Inter-Domain Routing (CIDR)

C) Dynamic Host Configuration Protocol (DHCP)

D) IPv6 transition mechanisms

E) Subnetting

F) Supernetting

Answer 1

Network Address Translation (NAT), Classless Inter-Domain Routing (CIDR), and Subnetting are three mechanisms used to extend the lifetime and usefulness of IPv4.

Step-by-step explanation:

The three mechanisms used to extend the lifetime and usefulness of IPv4 are Network Address Translation (NAT), Classless Inter-Domain Routing (CIDR), and Subnetting.

Network Address Translation (NAT) is used to translate private IPv4 addresses to public IPv4 addresses, allowing multiple devices to share a single public IP address. This helps conserve IPv4 addresses and allows for more devices to connect to the internet.

Classless Inter-Domain Routing (CIDR) allows for more efficient IP address allocation by using variable-length subnet masking. This enables organizations to use smaller blocks of IP addresses, leading to less wastage and better utilization of the available IP address space.

Subnetting is a process that divides a large IP network into smaller subnetworks or subnets. By doing so, it enables the efficient use of IP addresses and helps in managing network resources.