Cisco Certified Network Associate (CCNA) Practice Exam

What is the term for a local device's private IP address not visible outside the local network?

1. Inside local

2. Outside global

3. Inside global

4. Outside local

The correct answer is: Inside local

The term that refers to a local device's private IP address not visible outside the local network is "inside local." This designation is used to describe the private IP address assigned to internal devices within a network that are not directly routable on the internet. Private IP addresses, as defined by standards set forth by the Internet Engineering Task Force (IETF), are used within a local network for communication between devices without the risk of being exposed to external networks, such as the internet. The "inside" part indicates that it belongs to the local network environment, while "local" specifies its private nature. In contrast, the other terms refer to different types of IP addresses in the context of network address translation (NAT). For example, terms like "outside global" and "inside global" relate to public IP addresses that may represent local devices when translated for accessibility from the internet, while "outside local" addresses devices on external networks but do not have the same characteristics as the "inside local" designation. The clarity of these distinctions enhances understanding of how local and global IP addresses function within networking.