The heart of a modern computer is one or more Central Processing Units. A CPU gets its instructions from memory. The CPU reads instruction from the BIOS and searches for the hard disks, CD drives and other hardware. The BIOS program looks at the first sector for boot code. Devices that feed the initial CPU instructions are known as bootstrap media. DORA process of DHCP, Unicast or Broadcast. Dynamic Host Configuration Protocol (DHCP) provides IP address and other configuration information like subnet mask, default gateway, WINS and DNS server address to network clients. ... The DHCP client broadcasts a DHCPDISCOVER packet in the subnet.
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