Crucial Exams

ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

During a design review for a battery-powered IoT sensor network, you must select a mechanism to protect data in transit between hundreds of constrained sensors and a central gateway. Which option BEST applies the economy-of-mechanism principle to maximize both security assurance and resource efficiency on the sensors?

  • Implement full TLS with X.509 certificates, online OCSP checks, and elliptic-curve key exchange for every connection.

  • Embed an XML parser in every sensor and secure messages with WS-Security-based XML signatures.

  • Use Datagram TLS (DTLS) with pre-shared keys so each sensor performs only symmetric-key operations.

  • Add a proprietary encryption layer on top of standard TLS to provide "defense in depth."

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Concepts
Your Score:
Settings & Objectives
Random Mixed
Questions are selected randomly from all chosen topics, with a preference for those you haven’t seen before. You may see several questions from the same objective or domain in a row.
Rotate by Objective
Questions cycle through each objective or domain in turn, helping you avoid long streaks of questions from the same area. You may see some repeat questions, but the distribution will be more balanced across topics.

Check or uncheck an objective to set which questions you will receive.

Wipe Score
Bash, the Crucial Exams Chat Bot
AI Bot