Podcast
Questions and Answers
What is the role of the controller in a software-defined network?
What is the role of the controller in a software-defined network?
- Executing custom logic in the data plane
- Placing all policies and routing logic in the network (correct)
- Providing built-in features to the switches
- Directing the hardware vendors to provide necessary components
Why are switches in a software-defined network considered 'blind'?
Why are switches in a software-defined network considered 'blind'?
- They automatically adapt to any network changes
- They need external instruction from the controller (correct)
- They can see all network traffic
- They have no physical ports
What advantage does separating the control and data plane provide in SDN?
What advantage does separating the control and data plane provide in SDN?
- Reliance on vendor-provided features
- Limited product lifespan
- Decreased community development
- Freedom to customize logic independently (correct)
What is the main function of the SDN controller?
What is the main function of the SDN controller?
Why do SDN switches need instructions from the controller?
Why do SDN switches need instructions from the controller?
How does SDN differ from traditional networks in terms of switch functionality?
How does SDN differ from traditional networks in terms of switch functionality?
What type of messages can be sent from the controller to the switch to get statistics details?
What type of messages can be sent from the controller to the switch to get statistics details?
Which type of OpenFlow message can be sent from the switch to update the controller about flow rule removal?
Which type of OpenFlow message can be sent from the switch to update the controller about flow rule removal?
In OpenFlow, how are flow entries grouped within switches?
In OpenFlow, how are flow entries grouped within switches?
Which resource is stored in group tables inside switches as mentioned in the text?
Which resource is stored in group tables inside switches as mentioned in the text?
What are examples of asynchronous OpenFlow messages that can be sent from a switch to the controller?
What are examples of asynchronous OpenFlow messages that can be sent from a switch to the controller?
Where can detailed information about OpenFlow specification version 1.5.1 be found?
Where can detailed information about OpenFlow specification version 1.5.1 be found?
What is the main objective of software-defined networking (SDN)?
What is the main objective of software-defined networking (SDN)?
In the context of SDN, what role does the control plane serve?
In the context of SDN, what role does the control plane serve?
How are traditional networking devices different from SDN in terms of control and data planes?
How are traditional networking devices different from SDN in terms of control and data planes?
What is the major advantage of separating control and data planes in SDN?
What is the major advantage of separating control and data planes in SDN?
How does SDN differ from traditional networking regarding the changeability of modules?
How does SDN differ from traditional networking regarding the changeability of modules?
Why is standardization lacking in traditional networking devices compared to SDN?
Why is standardization lacking in traditional networking devices compared to SDN?
What type of message is exchanged between the controller and the switch to determine what features the switch supports?
What type of message is exchanged between the controller and the switch to determine what features the switch supports?
Which field in the OpenFlow messages is used to check connection aliveness?
Which field in the OpenFlow messages is used to check connection aliveness?
In the context of OpenFlow messages, what is the purpose of negotiating OpenFlow version?
In the context of OpenFlow messages, what is the purpose of negotiating OpenFlow version?
Which port is used for sending OpenFlow Feature Request messages from the controller to the switch?
Which port is used for sending OpenFlow Feature Request messages from the controller to the switch?
What is the purpose of OpenFlow messages for switch configurations (flow entries)?
What is the purpose of OpenFlow messages for switch configurations (flow entries)?
In OpenFlow, what type of message is exchanged between the controller and the switch once a TCP connection is made?
In OpenFlow, what type of message is exchanged between the controller and the switch once a TCP connection is made?
What is the responsibility of the processor in a router?
What is the responsibility of the processor in a router?
In router architecture, what is the purpose of TCAM?
In router architecture, what is the purpose of TCAM?
What distinguishes Routing Information Base (RIB) from Forwarding Information Base (FIB)?
What distinguishes Routing Information Base (RIB) from Forwarding Information Base (FIB)?
What signifies a packet arrival in a router's control plane?
What signifies a packet arrival in a router's control plane?
Which component is responsible for IP forwarding in a router?
Which component is responsible for IP forwarding in a router?
What generation of router architecture is characterized by distributed over multiple racks?
What generation of router architecture is characterized by distributed over multiple racks?
How does CAM differ from RAM in a router's architecture?
How does CAM differ from RAM in a router's architecture?
What role does FIB serve in a router's operations?
What role does FIB serve in a router's operations?
What is true about the Data Plane of a router?
What is true about the Data Plane of a router?
