How will Jerry access the corporate network from his new office setup across the country?

To access the corporate network from a new office setup across the country, the most appropriate method is through a VPN (Virtual Private Network). A VPN creates a secure, encrypted connection over the internet, allowing Jerry to connect to his company’s network as if he were on-site. This ensures safety and confidentiality while he accesses resources remotely.

Utilizing an intranet would typically require being connected within the organization's local network, which isn't feasible from a remote location without secure access methods. Accessing an extranet implies connecting to a part of the network that is shared with partners or outside users, rather than the internal network Jerry would need. Connecting via direct line generally involves physical cabling or leased lines, which is impractical for an individual working across the country. Thus, using a VPN is the preferred choice for secure corporate network access from a distance.