PK0-005 Practice Question: Basics of IT Infrastructure and IT Project Management
A project manager is overseeing a data center migration. The new infrastructure must support high availability and scalability. Which TWO components are essential for achieving these goals?
⚠ Common exam trap
Many candidates confuse RAID 0 with RAID 1 or RAID 5, mistakenly thinking striping provides redundancy, when in fact RAID 0 sacrifices fault tolerance for performance.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Load balancer
A load balancer distributes incoming traffic across multiple servers, ensuring no single server is overwhelmed. This directly supports scalability by allowing horizontal scaling, and high availability by rerouting traffic if a server fails. Without a load balancer, traffic spikes or server failures would degrade performance or cause downtime.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
RAID 0
Why it's wrong here
Incorrect: RAID 0 stripes data without redundancy, offering no fault tolerance.
- ✓
Load balancer
Why this is correct
Correct: Load balancers distribute traffic to multiple servers, improving scalability and providing failover for high availability.
- ✗
IP addressing scheme
Why it's wrong here
Incorrect: IP addressing is necessary for network communication but does not directly provide high availability or scalability.
- ✓
Redundant power supplies
Why this is correct
Correct: Redundant power supplies prevent downtime from power supply failures, critical for high availability.
- ✗
Single point of failure
Why it's wrong here
Incorrect: Single points of failure reduce availability, contradicting the goal of high availability.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PK0-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PK0-005 exam.