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Zorluk: KolayResilience, High Availability, and Redundancy

A system administrator needs to configure a mission-critical web server to ensure continuous operation even if a single network interface card (NIC) or power circuit fails. Which of the following hardware resilience controls should the administrator implement to eliminate these specific single points of failure? (Select TWO.)

  1. NIC teaming configured across separate physical switchesCevap
  2. Redundant power supplies connected to independent Power Distribution Units (PDUs)Cevap
  3. C
    Daily off-site tape backup replication
  4. D
    Preventive host-based firewall access control lists

Cevap

The administrator should implement NIC teaming configured across separate physical switches and redundant power supplies connected to independent PDUs.
The combination of NIC teaming and dual power supplies connected to separate PDUs ensures component-level fault tolerance for both network connectivity and electrical power, satisfying the goal of removing single points of failure.

Adım Adım Çözüm

1
Identify the network interface single point of failure requirement.
Combine multiple network interface cards using NIC teaming connected to distinct switch paths to ensure continuous connectivity upon link failure.
NIC teaming provides adapter fault tolerance at the network layer.
2
Identify the power infrastructure single point of failure requirement.
Equip the server with redundant power supply units (PSUs) plugged into independent electrical circuits via separate PDUs.
Dual PSUs on separate PDUs ensure uninterrupted power delivery if a PSU or power feed drops out.

Anahtar Kavram

Hardware Fault Tolerance and Link Redundancy
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Konular

Resilience, High Availability, and Redundancy

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