What is the role of DHCP in an enterprise network and what is a DHCP scope?

• A. DHCP assigns IP configuration to clients; a scope is the range of IP addresses and options within the server.
• B. DHCP provides DNS resolution for clients.
• C. DHCP is used to manage user accounts and permissions.
• D. A scope is a security boundary in DHCP.

Answer: (A)

DHCP automates how devices get their IP configuration. When a client joins the network, DHCP can assign an IP address from a defined pool, along with other essential network settings such as the subnet mask, default gateway, and DNS server addresses. This protects against duplicate IPs and makes it easy to reconfigure a whole network without manual setup on every device.

A DHCP scope is the server’s defined range of IP addresses that can be leased to clients on a specific subnet, along with the options that should accompany those leases. It determines which addresses are available for assignment (for example, 192.168.10.100 through 192.168.10.200) and attaches settings like the subnet mask, gateway, and DNS servers to be given to clients. Scopes can also include exclusions (addresses not to lease) and reservations for particular devices.

In an enterprise, you typically have multiple scopes for different subnets or VLANs, sometimes with relay agents helping clients on other subnets reach the DHCP server. This setup keeps IP management centralized while still providing appropriate network configuration to every device.

The other options don’t fit because DHCP’s role is not DNS resolution (it can supply DNS server addresses as configuration, but DNS resolution is handled by DNS servers), not user account or permission management, and a scope is not a security boundary—it’s a pool of IP addresses and the associated configuration.