CREST Practitioner Security Analyst (CPSA) Practice

What is the main purpose of DHCP in networking?

1. Allocates IP addresses to devices on a network

2. Connects networks and routes traffic

3. Secures wireless communications

4. Manages VLAN information

The correct answer is: Allocates IP addresses to devices on a network

The primary purpose of DHCP, or Dynamic Host Configuration Protocol, in networking is to allocate IP addresses to devices on a network dynamically. When a device connects to a network, it requires an IP address to communicate with other devices. DHCP facilitates this by automating the process. It allows the network administrator to configure a range of IP addresses that can be assigned to devices, thereby ensuring that IP addresses are distributed without manual intervention. This process not only simplifies network management but also helps prevent IP address conflicts, as DHCP keeps track of which addresses are in use and which are available. Additionally, DHCP can provide other information such as the subnet mask, default gateway, and DNS server addresses, which are essential for proper network configuration and communication. In contrast, connecting networks and routing traffic pertains to the function of routers and switches. Securing wireless communications involves different protocols and technologies that focus on encryption and authentication. Managing VLAN information relates to how network segmentation is implemented to improve performance and security but is not a core function of DHCP.