What characteristic defines a secure wireless network?

A secure wireless network is primarily defined by its use of encryption protocols like WPA2 or WPA3. These protocols play a crucial role in securing the data transmitted over the network by encoding it, making it difficult for unauthorized users to intercept or access the information. Encryption helps ensure confidentiality and integrity, safeguarding sensitive data from potential threats and attacks.

In contrast, while having increased accessibility can seem advantageous, it can also lead to vulnerabilities if the network is open to all devices without any restrictions or security measures in place. Compatibility with older network standards may provide convenience in some scenarios, but these standards often lack the security features necessary to protect against modern threats. Increased signal strength and bandwidth can enhance performance but do not inherently contribute to the security of the network itself. Therefore, the defining characteristic of a secure wireless network is its implementation of robust encryption protocols that protect the data transmission effectively.