Final answer:
To conserve bandwidth, Sofie should opt for a split tunnel VPN configuration, which directs only necessary traffic through the VPN while allowing other traffic to access the internet directly.
Step-by-step explanation:
To preserve bandwidth when configuring a VPN, Sofie would choose a split tunnel. A split tunnel VPN allows for the division of internet traffic, with only part of the traffic routed through the VPN, while the rest directly accesses the internet. This can significantly reduce unnecessary bandwidth usage, as only traffic requiring security or access to remote resources is sent through the VPN, leaving other traffic to use the default, less costly route.
On the other hand, a full tunnel VPN directs all the traffic through the VPN connection, regardless of its destination. This can lead to more bandwidth being consumed, as all the data is routed through the organization's network, which may not be necessary for all internet activities. There are no commonly accepted configurations referred to as 'narrow tunnel' or 'wide tunnel' in VPN terminology.