HPE Aruba Certified Network Security Expert (ACNSX) — Question 77

Which AOS-CX feature is used to prevent head-on-line (HOL) blocking?

Answer options

• A. VSF
• B. WFQ
• C. VOQ
• D. VSX

Correct answer: C

Explanation

The correct answer is C, VOQ (Virtual Output Queue), which is specifically designed to eliminate HOL blocking by separating queues for each output, allowing packets to be buffered independently. Options A (VSF), B (WFQ), and D (VSX) do not address HOL blocking directly; VSF and VSX are related to virtual switching frameworks, while WFQ is about traffic shaping and prioritization.