TestOut LabSim A+ Certification Practice Exam

When configuring a new network interface, what is the subset of IPv4 addresses that identifies devices in a local network?

1. Public IP address

2. Private IP address

3. Static IP address

4. Dynamic IP address

The correct answer is: Private IP address

The subset of IPv4 addresses that identifies devices in a local network is known as private IP addresses. These addresses are designated for use within a private network and are not routable on the public Internet. They afford organizations the ability to create a larger number of internal IP addresses without consuming public IP address space. Private IP addresses fall within specific ranges defined by the Internet Assigned Numbers Authority (IANA). These ranges include the following: - 10.0.0.0 to 10.255.255.255 - 172.16.0.0 to 172.31.255.255 - 192.168.0.0 to 192.168.255.255 This means that any devices on the same local network can communicate with each other using private IP addresses without requiring a public address. Since these addresses are not reachable from the outside Internet, they provide a layer of security for internal communications and save on public IP allocation. Public IP addresses, in contrast, are assigned to devices that need to be accessible over the Internet. Static IP addresses are fixed addresses that do not change, while dynamic IP addresses are assigned and can change over time, typically using DHCP (Dynamic Host Configuration Protocol). While static and dynamic