DEA-1TT5 Study Guide 2026
Everything you need to pass the DEA-1TT5 exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 DEA-1TT5 Exam Format at a Glance
📚 DEA-1TT5 Topics to Study (21)
✍️ Sample DEA-1TT5 Questions & Answers
1. What is the key difference between an incremental backup and a differential backup?
Incremental backups are smaller and faster since they only capture changes since the last backup, but restores require the last full plus all incrementals; differentials are larger but need only the last full plus latest differential to restore.
2. In a RAID 50 configuration, data is striped across multiple RAID 5 sets — what advantage does this provide?
RAID 50 (RAID 5+0) stripes data across two or more RAID 5 sets, improving I/O performance and allowing one drive failure per RAID 5 group while maintaining data availability.
3. What does 'MTBF' (Mean Time Between Failures) indicate for storage hardware?
MTBF is a reliability metric representing the average operational time between failures; higher MTBF indicates more reliable hardware, informing purchasing decisions and spare part stocking strategies.
4. What is the difference between IaaS, PaaS, and SaaS in cloud computing?
IaaS (Infrastructure as a Service) offers raw compute/storage/networking resources; PaaS (Platform as a Service) adds a managed development environment; SaaS (Software as a Service) delivers complete applications — each abstracts more of the infrastructure.
5. Which replication mode is best suited for long-distance replication where network latency is a significant factor?
Asynchronous replication decouples the host write acknowledgment from remote delivery, making it tolerant of high-latency WAN links over long distances.
6. What is a replication 'journal' used for in continuous data protection (CDP)?
A journal captures a continuous, time-stamped sequence of write operations, allowing recovery to any specific point in time within the journal retention window.