$1.$Which utility is most helpful in determining if a computer is connected to a LAN?

A$)$IPCONFIG

B$)$PING

C$)$TRACERT

D$)$ARP

$2.$A firewall allows

A$)$ no traffic in either direction

B$)$ imited traffic into the network.

C$)$ limited traffic out of the network.

D$)$ limited traffic in both directions.

$3.$Network errors are handled by A$)$ SNMP B$)$ SMTP C$)$ IMPC D$)$ ICMP