ITPEC FE Morning April 2018 Question 14
ITPEC FE Morning April 2018 — Question 14 of 80
Hot Standby vs Load Balancing — characteristic of an HA cluster using hot standby compared to load distribution.
Hot standby keeps a secondary server idle until the primary fails, then it takes over all processing.
Key difference from load balancing:
- A server with the same specifications is required as a secondary
- Throughput is maintained even during a failure because the standby takes full control
Why not others:
- (b) — describes load balancing behavior: remaining servers get overloaded, throughput drops
- (c) — uniform process distribution and expandability describe load balancing benefits
- (d) — shared database is a general cluster requirement, not specific to hot standby vs load balancing
Key rule: Hot standby = dedicated backup server (same specs, idle until needed). Load balancing = active-active, all servers share work.
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