Answer:
1. DHCP may be blocked by a firewall software
2. Static IP assigned to the workstation
Explanation:
DHCP refers to the The Dynamic Host Configuration Protocol (DHCP) it is used to automatically assign IP addresses to every device on a computer network. Through the DHCP server, computers request IP addresses as well as other parameters for the network needed for communication, and directly obtain them from the internet service provider (ISP). If this service is block by a firewall software it could be a reason why the workstation is unable to connect to the network. Configuring a static IP address rather than allowing automatic assignment of IP addresses could also lead to this problem