The correct answer isC. To distribute incoming network traffic across multiple destinations.
ALoad Balancer Servicein anSDN environmentis responsible forefficiently distributing network trafficacross multiple servers or instances. This ensures high availability, reliability, and optimized resource usage.
Key Functions:
Traffic Distribution:Balances incoming requests to various servers based on predefined algorithms (round-robin, least connections, etc.).
High Availability:Prevents server overload and reduces downtime by distributing workload.
Scalability:Automatically adjusts as the number of requests or available resources changes.
Health Monitoring:Continually checks server availability and responsiveness to avoid directing traffic to non-responsive instances.
Why Other Options Are Incorrect:
A. Isolated virtual networks:Creating isolated networks is a function of network virtualization, not load balancing.
B. Monitor network performance:Monitoring is done by network monitoring tools, not load balancers.
D. Encrypt data for secure transmission:Encryption is handled by security protocols like TLS/SSL, not load balancers.
Real-World Example:
Services likeAWS Elastic Load Balancer (ELB)andAzure Load Balancerensure that traffic is distributed efficiently across instances, maintaining performance and uptime.
[References:, CSA Security Guidance v4.0, Domain 7: Infrastructure Security, Cloud Computing Security Risk Assessment (ENISA) - SDN and Load Balancing, Cloud Controls Matrix (CCM) v3.0.1 - Network and Infrastructure Domains, , , ]
