SK0-004 · Question #141
Server A hosts a mission-critical business application. The server has one disk and one NIC. The administrator has been asked to implement a solution to meet the business requirement that the…
The correct answer is A. Configure failover clustering using Server A and a new server. Failover clustering across two servers ensures the application remains available if one server experiences a hardware failure, meeting the high availability requirement.
Question
Server A hosts a mission-critical business application. The server has one disk and one NIC. The administrator has been asked to implement a solution to meet the business requirement that the application must maintain high availability, even in case of a hardware failure. Which of the following BEST meets this requirement?
Options
- AConfigure failover clustering using Server A and a new server.
- BAdd multiple disks on the server and configure RAID 5.
- CAdd an additional NIC and configure the NIC as standby.
- DMove the application to another server that has more resources.
How the community answered
(32 responses)- A78% (25)
- B3% (1)
- C6% (2)
- D13% (4)
Why each option
Failover clustering across two servers ensures the application remains available if one server experiences a hardware failure, meeting the high availability requirement.
Failover clustering pairs Server A with a second server so that if any hardware component on Server A fails - disk, NIC, or CPU - the clustered partner node automatically takes over and keeps the application running. This is the only option that protects against a complete server hardware failure, which is the scenario the business requirement explicitly addresses. RAID and NIC teaming protect individual components but do not provide server-level failover.
RAID 5 protects only against a single disk failure and does nothing to maintain availability if the server's NIC, CPU, or motherboard fails.
A standby NIC addresses only network adapter failure - it does not protect against disk failure or other hardware failures that could take down the server.
Moving the application to another server simply relocates the single point of failure rather than eliminating it; no redundancy or automatic failover is established.
Concept tested: Windows Server failover clustering for high availability
Source: https://learn.microsoft.com/en-us/windows-server/failover-clustering/failover-clustering-overview
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