Quick Answer
The answer is network latency, as it is the key consideration for ensuring high performance in a storage area network (SAN). This is because SANs depend on low-latency, high-speed block-level protocols like Fibre Channel or iSCSI; any increase in SAN performance network latency directly delays I/O operations, which throttles throughput and slows application responsiveness, particularly during synchronous replication or high transaction rates. On the CompTIA Project+ PK0-005 exam, this concept tests your understanding of how infrastructure choices impact project deliverables, often appearing in scenario-based questions where a slow SAN is blamed on bandwidth rather than latency—a common trap. Remember, bandwidth is the pipe size, but latency is the speed of the flow; for SANs, milliseconds matter. A useful memory tip: think “L for Latency, L for Lag”—if the SAN lags, check latency first.
This PK0-005 practice question tests your understanding of basics of it infrastructure and it project management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization is deploying a new storage area network (SAN). Which of the following is a key consideration for ensuring high performance?
Network latency
Low network latency is essential for high-speed data transfers in a SAN.
Cable color
Why wrong: Cable color has no impact on performance.
Storage capacity
Why wrong: Capacity determines how much data can be stored, not how fast it can be accessed.
Number of users
Why wrong: While user count affects demand, it is not a direct performance metric for the SAN itself.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Network latency
Network latency is a key consideration for SAN performance because SANs rely on low-latency, high-speed block-level storage protocols such as Fibre Channel (FC) or iSCSI. High latency can cause significant delays in I/O operations, directly impacting throughput and application responsiveness, especially in environments with synchronous replication or high transaction rates.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Network latency
Why this is correct
Low network latency is essential for high-speed data transfers in a SAN.
Related concept
Read the scenario before looking for a memorised answer.
Cable color
Why it's wrong here
Cable color has no impact on performance.
Storage capacity
Why it's wrong here
Capacity determines how much data can be stored, not how fast it can be accessed.
Number of users
Why it's wrong here
While user count affects demand, it is not a direct performance metric for the SAN itself.
Common exam traps
The trap here is that candidates often confuse storage capacity with performance, assuming more capacity means faster access, but the exam focuses on latency as the primary performance bottleneck in SAN deployments.
Detailed technical explanation
In Fibre Channel SANs, latency is measured in microseconds and is critical for meeting service-level agreements; even a few milliseconds of added latency can degrade database or virtual machine performance. Factors such as distance between switches, buffer-to-buffer credits, and the use of optical transceivers all influence end-to-end latency. In iSCSI SANs, network jitter and TCP offload engine (TOE) support also play a major role in maintaining low latency.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the PK0-005 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Basics of IT Infrastructure and IT Project Management — This question tests Basics of IT Infrastructure and IT Project Management — Read the scenario before looking for a memorised answer..
The correct answer is: Network latency — Network latency is a key consideration for SAN performance because SANs rely on low-latency, high-speed block-level storage protocols such as Fibre Channel (FC) or iSCSI. High latency can cause significant delays in I/O operations, directly impacting throughput and application responsiveness, especially in environments with synchronous replication or high transaction rates.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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.
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