Which of the following WAC high-reliability networking modes support load balancing? (Multiple choice)

Question

Options

• ALink cold backup
• BN+1 backup
• CVRRP hot backup
• DDual-link hot backup

• A
  71% (17)
• C
  29% (7)

Explanation

Link cold backup (A), N+1 backup (B), and dual-link hot backup (D) all support load balancing because each mode allows active WACs to distribute AP connections or traffic across multiple controllers during normal operation - in cold backup, APs can be spread across primary and backup; in N+1, the N working WACs share load among themselves; in dual-link hot, both WACs are simultaneously active and APs are divided between them.

VRRP hot backup (C) is the exception because VRRP operates on a strict active/passive model: one master WAC handles all traffic while the standby remains completely idle until failover. Since only one WAC forwards traffic at a time, load balancing is structurally impossible.

Memory tip: Think of VRRP as a "one captain at a time" model - the ship only has one active captain, so you can't split the work. The other three modes all allow multiple "captains" to be working simultaneously, which is the prerequisite for load balancing. If a mode allows simultaneous active participation, it supports load balancing; if it enforces a single active node (like VRRP), it does not.

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