What is the primary role of a load balancer in a network?

To filter malicious traffic and protect the network from attacks

To store frequently accessed data in memory for faster retrieval

To distribute incoming traffic across multiple servers to prevent any single server from becoming overwhelmed

To translate domain names to IP addresses

What is the purpose of a failover mechanism in a high availability system?

To encrypt data in transit between servers

To monitor system performance and generate alerts

To automatically switch operations to a standby component when the primary component fails

To distribute traffic evenly across multiple servers

A company runs a web application that requires session persistence. Users must be directed to the same server for the duration of their session. The application is deployed on multiple servers behind a load balancer. Which load-balancing configuration should be used?

Enable sticky sessions (session affinity) on the load balancer.

Use least-connections scheduling.

What is the purpose of configuring health checks on a load balancer?

To balance the load based on server CPU usage

To verify that backend servers are responding correctly and remove unhealthy ones from rotation

To encrypt traffic between the load balancer and backend servers

To store session data for sticky sessions

A company runs a critical application on a two-node failover cluster. The cluster uses shared storage. During a routine maintenance, the IT team needs to update the operating system on the primary node. The application must remain available throughout the maintenance. Which action should they take?

Apply the update directly to the primary node while it is running the application.

Shut down the primary node, apply the update, and restart it.

Perform a controlled failover to the secondary node, apply the update to the primary node, then fail back.

Apply the update to both nodes simultaneously.

CompTIADataSys+

Domain 5Objective 2

High Availability DS0-001 Practice Questions (Page 6)

Part of the Business continuity domain, which accounts for 12% of the DS0-001 exam. CompTIA does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–7 in this domain), expect 1–2 from this objective — we provide 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

8concepts

12%of the exam

Questions 26–30

26foundation · easy
What is the primary role of a load balancer in a network?
Select an answer first
27foundation · easy
What is the purpose of a failover mechanism in a high availability system?
Select an answer first
28expert · hard
A company runs a web application that requires session persistence. Users must be directed to the same server for the duration of their session. The application is deployed on multiple servers behind a load balancer. Which load-balancing configuration should be used?
Select an answer first
29foundation · easy
What is the purpose of configuring health checks on a load balancer?
Select an answer first
30expert · hard
A company runs a critical application on a two-node failover cluster. The cluster uses shared storage. During a routine maintenance, the IT team needs to update the operating system on the primary node. The application must remain available throughout the maintenance. Which action should they take?
Select an answer first

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