What is software-defined networking (SDN)?

Software Defined Networking (SDN) is revolutionizing the networking industry by separating the control plane from the data plane, allowing for more dynamic and secure networks. Originating from Stanford, SDN enables virtualization, making networks agile and easier to manage. It is now used beyond data centers, in wide area networks (SD-WAN) and for security through microsegmentation. SDN also supports network function virtualization (NFV), replacing specialized hardware with software. As SDN evolves, it is applied to cloud and IoT environments, enhancing network agility and adaptability.

What is the primary benefit of separating the control plane from the data plane in SDN?

• It enables dynamic network management.

• It reduces the cost of network hardware.

• It allows for faster data transmission.

• It increases the physical security of the network.

How does SD-WAN improve enterprise connectivity?

• By aggregating multiple types of network connections.

• By increasing the number of physical servers.

• By eliminating the need for routers.

• By using a single type of network connection.

What is the purpose of microsegmentation in SDN?

• To simplify network architecture.

• To reduce network costs.

• To enhance network security.

• To increase network speed.

What does network function virtualization (NFV) aim to replace?

• Traditional routers and switches.

• Specialized hardware like firewalls and load balancers.

• Cloud-based network services.

• Physical network cables.

How does SDN contribute to managing IoT traffic?

• By eliminating the need for data centers.

• By reducing the bandwidth required for IoT devices.

• By segmenting network traffic and organizing data.

• By increasing the number of IoT devices.