High Availability (Network+) Quiz: Failover & Load Balancing

1. What does RTO stand for in disaster recovery planning?

Recovery Time Objective

Redundancy Transfer Option

Remote Terminal Outage

Routing Table Optimization

2. What is the main purpose of implementing a hot standby in a failover cluster?

To reduce network bandwidth usage

To minimize downtime by having an immediately available backup

To distribute load evenly across servers

To monitor security threats in real time

3. In Layer 7 load balancing, what information is used to make routing decisions?

IP addresses and ports

Application-level data like URLs and hostnames

MAC addresses

VLAN IDs

4. Which technology enables automatic detection and recovery from server failures?

VLAN tagging

Clustering and failover

Port aggregation

Quality of Service (QoS)

5. What is the primary benefit of implementing redundant network paths?

Reduced equipment costs

Increased network security

Improved availability and fault tolerance

Simplified network management

6. In Layer 4 load balancing, which protocol information is examined?

Source and destination IP addresses

HTTP headers and URL paths

Source and destination ports

MAC addresses

7. What does RPO represent in the context of business continuity?

Recovery Point Objective

Redundancy Protocol Option

Remote Proxy Operation

Routing Priority Optimization

8. Which failover scenario allows both nodes to handle traffic simultaneously?

Active-passive failover

Active-active failover

Passive-passive failover

Delayed failover

9. What is the purpose of a health check in a load balancer?

To encrypt traffic between servers

To verify that backend servers are operational and available

To compress data before transmission

To authenticate user credentials

10. In DNS round robin load balancing, how are multiple IP addresses returned to clients?

In a fixed sequential order

In a random order, rotating on each query

Based on server load metrics

Based on client geographic location

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

To distribute network traffic across multiple servers

To automatically switch to a backup system when the primary fails

To encrypt data during transmission

To monitor bandwidth usage in real time

12. Which of the following best describes geographic redundancy?

Backup servers located in the same data center

Multiple copies of data within a single server

Redundant systems distributed across different physical locations

Redundant network cables in the same building

13. What is a heartbeat in the context of failover clusters?

The maximum latency allowed in a network

A periodic signal sent between nodes to verify they are operational

The time it takes for a server to restart

The frequency of load balancer health checks

14. In load balancing, what does session persistence (sticky sessions) ensure?

All requests from a client go to the same backend server

Encrypted communication between client and server

Automatic failover on connection loss

Equal distribution of traffic across all servers

15. Which technology allows multiple servers to share a single virtual IP address?

NAT

VLAN

VIP (Virtual IP)

DHCP

16. What is the main advantage of active-active failover over active-passive?

Lower implementation cost

Better resource utilization and higher throughput

Simpler configuration

Reduced network latency

17. Which metric does the least connections load balancing algorithm prioritize?

Server response time

Number of active connections per server

Server CPU usage

Network bandwidth capacity

18. In active-passive failover, what is the role of the passive node?

To actively process all incoming requests

To monitor the network for threats

To remain on standby and take over if the active node fails

To manage DNS resolution

19. What does VRRP stand for in the context of network redundancy?

Virtual Router Redundancy Protocol

Virtual Routing and Reliability Protocol

Virtual Resource Replication Protocol

Virtual Response Routing Protocol

20. Which load balancing algorithm distributes requests in a sequential, rotating manner?

Least connections

Round robin

IP hash

Random selection

High Availability Quiz: Can You Master Failover & Load Balancing?