Future Business Leaders of America (FBLA) Cybersecurity Practice Test

What is the main function of L2TP?

1. To encrypt data for secure transactions

2. To support virtual private networks (VPNs)

3. To enhance wireless security

4. To provide direct internet access

The correct answer is: To support virtual private networks (VPNs)

The main function of Layer 2 Tunneling Protocol (L2TP) is to support virtual private networks (VPNs). It is a tunneling protocol that allows for the encapsulation of data packets, which enables secure communication over the internet. By creating a tunnel through which data is sent, L2TP helps connect remote users or branch offices to a central network, making it possible to securely transmit information across insecure networks like the internet. L2TP itself does not provide encryption or confidentiality; instead, it is often combined with other protocols such as IPsec (Internet Protocol Security) which handle the encryption aspect, enhancing the security of the VPN. This integration allows users to establish a secure connection while benefiting from the functionality and features provided by L2TP. Other options, while related to security or network connectivity in some way, do not accurately represent the primary role of L2TP in the context of VPNs, highlighting the specific purpose of L2TP in ensuring that data can be transmitted securely in a tunnel format between different points on a network, thus allowing seamless secure communications and connectivity.