ITPEC FE Morning April 2022 Question 15
ITPEC FE Morning April 2022 — Question 15 of 80
HA Cluster: Hot Standby vs Load Distribution — identify the characteristic unique to hot standby.
Hot standby keeps a secondary server idle until the primary fails, then it takes over entirely.
Load distribution spreads work across all active servers using a load balancer.
Why (a):
- Secondary must match primary specs to handle full load on failover
- Throughput is maintained even during failure — no degradation
Why not others:
- (b) — describes load distribution behavior: remaining servers get overloaded → throughput drops
- (c) — uniform process distribution and scalability = load balancing trait
- (d) — shared database for consistency = load distribution requirement (multiple servers processing simultaneously)
Key rule: Hot standby = 1 active + 1 idle backup. Load balancing = all servers active, sharing the workload.
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