🔥 40% Off Crucial Exams Memberships — This Week Only

2 days, 10 hours remaining!
Crucial Exams

ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

During an investigation you observe a finance server issuing hundreds of DNS requests per minute to exfil.example.net. Each query includes a long base64-like string in the subdomain (e.g., dXNlcmRhdGE=.exfil.example.net) and the replies are TXT records. The firewall allows only ports 53 and 443 outbound, and proxy logs show no large HTTPS transfers. Which data-theft technique is most likely in use?

  • Steganography by hiding files inside outbound JPEG images delivered over HTTP

  • Covert timing channel that hides data in TCP ACK sequence numbers

  • Exfiltration through DNS tunneling that embeds data in query and TXT record payloads

  • Embedding sensitive data inside TLS certificate fields sent over HTTPS

ISC2 Systems Security Certified Practitioner (SSCP)
Systems and Application Security
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