Exploring Software Defined Networking

What is Software Defined Networking (SDN)?

• Software Defined Networking (SDN) is a networking paradigm that separates the control plane from the data plane, enabling centralized management and programmability of network resources.

• A protocol for securing data transmission over the internet.

• A method for increasing network bandwidth by using multiple connections.

• A hardware-based approach to networking that relies on physical devices.

How does SDN differ from traditional networking?

• SDN uses a distributed control model similar to traditional networking.

• SDN differs from traditional networking by decoupling the control plane from the data plane, enabling centralized control and programmability.

• SDN requires more hardware than traditional networking.

• SDN does not allow for network programmability like traditional networking.

What are the main components of an SDN architecture?

• Application Layer, Network Layer, Physical Layer

• Network Layer, Transport Layer, Application Layer

• Application Layer, Control Layer, Infrastructure Layer

• Data Link Layer, Control Layer, Management Layer

What role does the SDN controller play in the network?

• The SDN controller acts as a firewall to block unauthorized access.

• The SDN controller only monitors network traffic without making changes.

• The SDN controller is responsible for physical hardware maintenance in the network.

• The SDN controller manages and controls the network by providing centralized intelligence and enabling dynamic configuration.

Can you name a few popular SDN controllers?

• Juniper Contrail

• VMware NSX

• Cisco ACI

• OpenDaylight, Ryu, Floodlight

What is the purpose of OpenFlow in SDN?

• To encrypt data transmitted over the network.

• To provide a user interface for network administrators.

• The purpose of OpenFlow in SDN is to enable the SDN controller to communicate with and manage network devices.

• To replace traditional routing protocols.

How does SDN improve network management and automation?

• SDN eliminates the need for any network monitoring tools.

• centralizing control, enabling programmability, and allowing for automated configuration and monitoring.

• SDN reduces the need for network security measures.

• SDN relies solely on manual configuration for network changes.

What are the security implications of using SDN?

• SDN eliminates all security risks associated with network management.

• SDN only enhances security without introducing any vulnerabilities.

• SDN operates independently of network protocols, ensuring complete security.

• SDN introduces risks such as centralized control vulnerabilities, increased attack surfaces through APIs, and potential misconfigurations.

What are the benefits of using SDN in data centers?

• Slower application performance

• Benefits of using SDN in data centers include centralized control, dynamic resource allocation, improved network management, enhanced automation, better scalability, flexibility, faster application deployment, and improved network monitoring and security.

• Increased hardware costs

• Reduced network security

What challenges are associated with implementing SDN?

• Increased hardware costs

• Challenges include infrastructure changes, security vulnerabilities, interoperability issues, and the need for skilled personnel.

• Enhanced data privacy

• Simplified network management