What Must Be Considered When Designing a High-Availability Network?
Which of the following must be considered when designing a high-availability network? (Choose two).
Community Votes
76% of anonymous learners picked answer AD. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
Tests the ability to distinguish between true high-availability operational metrics and general security or redundancy concepts, with the common trap being the misapplication of physical isolation as a primary HA driver.
This question examines the core principles of maintaining continuous service during system failures. Community consensus strongly supports ease of recovery and responsiveness as the defining characteristics of high-availability design, despite significant debate over physical isolation.
Many candidates incorrectly choose Physical Isolation (Option C), confusing hardware redundancy or air-gapping with high-availability requirements, while failing to recognize that responsiveness and recovery speed are the direct determinants of minimized downtime.
Community Discussion (23 comments)
Etc_Shadow28000
👍 19
Selected: AD
When designing a high-availability network, two key considerations are: A. Ease of recovery D. Responsiveness - Ease of recovery. This is essential for high availability because the network must be able to recover quickly from failures to minimize downtime. - Responsiveness. Ensuring that the network can handle high traffic loads and respond quickly to user requests is crucial for maintaining high availability. Other factors like physical isolation, ability to patch, attack surface, and extensible authentication are important for security and maintenance but are not primary considerations for high availability. Therefore, the correct answers are: A. Ease of recovery D. Responsiveness
MarDog
👍 7
A. Ease of Recovery and C. Physical Isolation
slackbot
👍 1
Selected: AC
bad wording again. is this about high availability/resiliency or redundancy? A suggests redundancy C suggests redundancy D suggests resilience Question is asking about resiliency so, it looks like the only reasonable answer is D. Both A and C should not be correct. so, it would seem they are asking about redundancy, not resiliency in which case we get A and C good job again compTIA
jaylom
👍 2
Selected: AC
The Answer should be A: Ease of recovery and C: Physical isolation. -I know that the answer says A and D, but think about it, responsiveness is built upon a working system, and If a single point of failure occurs, then responsiveness will mean nothing. The question asks what "must" be considered for availability, so A: Ease of recovery minimizes downtime and increases availability, and C: Physical isolation eliminates a single point of failure and provides availability. -Even though responsiveness is also important, it is still built upon a working system, and if a single point of failure occurs, then responsiveness will not matter.
tsummey
👍 2
Selected: AC
High availability focuses on redundancy, fault tolerance, and recovery mechanisms rather than just speed. The more correct answers remain Ease of recovery and Physical isolation, as they directly impact the ability of a network to remain operational despite failures.
CZAR88
👍 2
Selected: AE
ttack surface • How many ways into your home? – Doors, windows, basements • Everything can be a vulnerability – Application code – Open ports • Authentication process – Human error • Minimize the surface – Audit the code – Block ports on the firewall – Monitor network traffic in real-time
MaxiPrince
👍 1
Selected: AD
A & D Ease of recovery/Responsiveness
3dk1
👍 1
Selected: AD
Prof Messer's video explains it well.
Bito808
👍 1
Think of doing an online purchase. Which would minimally affect your transaction? Which shortens system downtime?
3330278_111
👍 2
Selected: AC
I was pretty confident about AD at first. However, availability focuses on minimizing downtime and ensuring continuous operation. Physical Isolation provides redundancy and protection against failures, which is a fundamental aspect of high availability, ensuring that issues in one part of the network do not impact the overall availability of services. Physical isolation helps prevent a single point of failure from affecting the entire network. While responsiveness is important for performance, it is not specifically a high-availability consideration. High availability focuses on ensuring that systems remain operational and recover quickly from failures, rather than optimizing performance.
NONS3c
👍 3
Selected: AD
A. Ease of recovery High availability requires systems to recover quickly and easily in case of failure. This ensures minimal downtime and fast restoration of services. D. Responsiveness A high-availability network must respond quickly to changes or failures to maintain uptime. This includes quick failover mechanisms and the ability to rapidly address network issues.
cri88
👍 2
Selected: AC
When designing a high-availability network, two key considerations are: Ease of recovery: This refers to the network’s ability to quickly and efficiently recover from failures or disruptions. Having redundant components, failover mechanisms, and well-defined recovery procedures in place is crucial1. Physical isolation: Ensuring that critical components are physically separated helps prevent single points of failure and enhances network resilience.
a4e15bd
👍 1
A & D A. Ease of Recovery, ensure quick restoration after a failure. D. Responsiveness, ensures the network can handle the load and maintain availability
dbrowndiver
👍 1
Selected: AD
High-availability networks require robust recovery processes to ensure that services can be restored rapidly after any failure, minimizing the impact on users and maintaining service continuity. Responsiveness is crucial for a high-availability network, as it ensures that the network can handle unexpected changes and continue delivering services efficiently, even under stress or during failures.
ILOVECOMPTIA
👍 4
Ease of recovery = HA Ability to patch = security Physical isolation = HA (because nobody can touch it) Responsiveness = Performance Attack surface = Security Extensible authentication = Security
cdsu
👍 2
Why not A and E? Its a tuff question.
f26ddcd
👍 1
Selected: AD
A. Ease of recovery D. Responsiveness
leedsbarber
👍 1
Selected: AB
Like so many questions, it can be open to interpretation. I went for A and B, but I can certainly see an argument for A and D.
leedsbarber
👍 1
Like so many questions, it can be open to interpretation. I went for A and B, but I can certainly see an argument for A and D.
hashiranaide
👍 2
Selected: AB
I went with A and B, since the ability to apply patches without a downtime (e.g. by patching one node after the other) is one of the important features of a HA system
hasquaati
👍 2
Selected: AD
I chose AD because High Availability also means Responsiveness, even when something stops working.
shady23
👍 1
Selected: AD
D. Responsiveness A. Ease of recovery
e5c1bb5
👍 2
struggling with this one. question too broad. Ease of recovery is important for availability so id go with that. not sure about responsiveness..
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Expert Analysis
High Availability vs. General Redundancy
High availability (HA) specifically targets minimizing unplanned downtime and ensuring continuous service delivery. While redundancy provides backup components, HA design focuses on how quickly and smoothly those backups activate and restore functionality.Why Ease of Recovery and Responsiveness Are Correct
Ease of recovery (A) directly addresses the Recovery Time Objective (RTO), ensuring that automated failover and restoration processes are straightforward and fast. Responsiveness (D) guarantees that the network dynamically adjusts to traffic shifts, component failures, or maintenance windows without degrading user experience. As noted in community discussions, these two factors work together to maintain uptime during active disruptions.Why the Remaining Options Are Incorrect
Ability to patch (B) relates to vulnerability management and security compliance, not continuous operation. Physical isolation (C) is primarily a security control for preventing unauthorized access or lateral movement; while it can contribute to fault tolerance, it does not inherently solve recovery speed or load-handling capabilities. Attack surface (E) focuses on risk reduction and threat mitigation rather than availability engineering. Several candidates selected AC due to conflating HA with hardware-level redundancy, but modern HA architectures prioritize automated recovery and real-time responsiveness over static physical separation.Official Reference
Exam Strategy
When tackling high-availability questions, prioritize options that directly measure uptime, failover speed, and user experience during disruptions. Filter out answers that describe preventive security controls, routine maintenance tasks, or static hardware configurations unless they explicitly mention continuous operation or automated recovery mechanisms.
Related Analysis
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