4.1 Using the Cloud Flashcards
What is Software-Defined Networking (SDN)?
A modern network architecture that centralizes control and management, enabling rapid configuration, scalability, and automation of network changes.
How does SDN separate physical and logical functions?
By creating an abstraction layer that separates hardware devices from logical network functions.
What are the main layers of SDN?
Application Layer, Control Layer, Infrastructure Layer, and Management Plane.
What is the role of the Application Layer in SDN?
It handles resource requests and provides network-wide information.
What does the Control Layer in SDN do?
Decides packet routing, traffic prioritization, and security policies.
What is the Infrastructure Layer in SDN?
The layer of physical and virtual devices that execute commands from the Control Layer.
What is the Management Plane in SDN?
Monitors network status and traffic conditions, enabling dynamic configuration changes.
How does SDN support cloud environments?
By providing scalability, elasticity, and agility for dynamic resource allocation.
Why is centralized control important in SDN?
It allows operators to manage the entire network holistically, regardless of underlying technology.
What role does automation play in SDN?
Enables quick and consistent responses to traffic or configuration changes using orchestration tools.
How does SDN improve scalability?
By allowing dynamic reconfiguration and centralized management of network resources.
What benefits does SDN bring to network virtualization?
Simplifies management and enables dynamic scaling and agility.
Why is SDN critical for cloud applications?
It supports efficient, automated resource allocation and scalability.
What is the impact of SDN on network management?
It simplifies operations, increases flexibility, and supports rapid adaptation to changing demands.
