A newly installed desktop is unable to connect to networked resources. The systems administrator executes various commands and reviews the following output snippets: Which of the following should…

`arp -s` adds a static ARP entry, which is used for resolving IP to MAC addresses, and is not the first step to restore general connectivity if the interface itself is down.

`route add` adds a static network route; this is only necessary if routing tables are incorrect after the interface is up and has an IP address.

`dig -x` performs a reverse DNS lookup, and using `127.0.0.1` (localhost) as the DNS server for an external IP address is unlikely to resolve a connectivity issue.

The `ip link set wlo1 up` command brings the specified network interface (`wlo1`) up, making it active and capable of transmitting and receiving data. This is a fundamental step to restore connectivity if the interface is in a down state, which is a common cause for a desktop being unable to connect to networked resources.

`killall -HUP NetworkManager` restarts the NetworkManager service, which might resolve some configuration issues, but it's not the most direct fix if a specific interface is explicitly down.