Private network IP addresses are reserved for use within a private network and are not routable on the public internet. They fall within certain ranges defined by the Internet Assigned Numbers Authority (IANA), such as 10.0.0.0 to 10.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255. These addresses are commonly used in home and business networks to allow devices to communicate internally without being directly accessible from the outside. **

In network addresses, "that" could refer to a specific aspect of the address such as the subnet mask, the network portion, or the host portion. For example, if "that" refers to the subnet mask, it means the number of bits that determine the network portion of the address. If "that" refers to the network portion, it means the unique identifier for the specific network. And if "that" refers to the host portion, it means the unique identifier for the specific device within the network. **

In IPv6, a network card has two types of addresses: a link-local address and a global unicast address. The link-local address is automatically configured and used for communication within the local network segment. The global unicast address is similar to the public IPv4 address and is used for communication over the internet. Both addresses are essential for the network card to communicate with other devices on the network. **

The number of IP addresses in a network depends on the specific IP address scheme being used. In an IPv4 network, there are approximately 4.3 billion possible IP addresses. However, with the adoption of IPv6, which uses 128-bit addresses, the number of possible IP addresses is virtually limitless, with approximately 340 undecillion unique addresses. The actual number of usable IP addresses in a network will depend on the subnetting and addressing scheme being used by the network administrator. **

Without specific information about the size or scope of the network, it is impossible to determine the exact number of unknown IP addresses. The number of unknown IP addresses in a network can vary widely depending on the size of the network, the number of devices connected, and the level of network monitoring and management in place. To accurately determine the number of unknown IP addresses, a comprehensive network scan or inventory would need to be conducted. **

MAC addresses are not used instead of IP addresses because MAC addresses are tied to the physical hardware of a device, such as a network card, and do not change. This makes them unsuitable for routing data over networks, as they are only relevant within the local network. IP addresses, on the other hand, are designed to be unique identifiers for devices on a network and are used for routing data across different networks. Additionally, IP addresses are easier to manage and assign than MAC addresses. **

WLAN IP addresses and social network accounts can be vulnerable to hacking if proper security measures are not in place. WLAN IP addresses can be targeted by hackers to gain unauthorized access to a network, while social network accounts can be hacked through various methods such as phishing, social engineering, or weak passwords. It is important for users to regularly update their security settings, use strong and unique passwords, and be cautious of suspicious links or messages to protect their WLAN IP addresses and social network accounts from being hacked. **

One way to access home network addresses while on the go is by setting up a Virtual Private Network (VPN) on your home network. This will allow you to securely connect to your home network from anywhere with an internet connection. Another option is to use remote desktop software, such as TeamViewer or Chrome Remote Desktop, to access your home computer and network remotely. Additionally, some routers offer mobile apps that allow you to access and manage your home network settings and devices while away from home. **