CREST Practitioner Security Analyst (CPSA) Practice

Disable ads (and more) with a membership for a one time $2.99 payment

Master the CREST Practitioner Security Analyst Exam. Prepare with quizzes and comprehensive study guides that include tips and explanations. Excel in your certification journey!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which port is utilized for DHCP Client traffic?

Port 67 (UDP)
Port 68 (UDP)
Port 69 (UDP)
Port 80

The correct answer is: Port 68 (UDP)

The port utilized for DHCP Client traffic is Port 68 (UDP). In the Dynamic Host Configuration Protocol (DHCP), the communication process involves the client requesting an IP address and configuration information from a DHCP server. When a DHCP client initially sends a discover message to locate a DHCP server, it uses a broadcast on Port 67. However, the server responds back to the client on Port 68. Therefore, Port 68 is designated for receiving (and thus forms part of the client-side communication for DHCP). This distinction is important for understanding how client-server interactions occur in this protocol. Furthermore, the other ports listed serve different functions: Port 67 is specifically used for the DHCP server's requests; Port 69 is used for Trivial File Transfer Protocol (TFTP), and Port 80 is the well-known port for Hypertext Transfer Protocol (HTTP), which is unrelated to DHCP. Understanding these details clarifies the overall process of IP address allocation within a network and highlights the specific roles of these ports in that process.