CS 6250 Exam 2 Newest 2026 Questions
and Correct Detailed Answers Already
Graded A+
What are 5 use cases for control plane/data plane? - CORRECT ANSWER-1.
path selection based on network traffic load
2. minimized disruptions during planned routing changes
3. redirecting or dropping suspected attack traffic
4. allow customer networks more control over network flow
5. offer value added services for virtual private network customers
(7)
What are 2 reasons computer networks are complex and difficult to manage that
led to the development of SDN? - CORRECT ANSWER-1. Diversity of network
equipment
2. Proprietary technology required for equipment
,Why would equipment diversity cause complexity when managing a network? -
CORRECT ANSWER-Different software must be used for different protocols (7)
Why do proprietary technologies cause complexity when managing networks? -
CORRECT ANSWER-Some equipment (router, switch, etc.) run on
closed/proprietary software
Configuration interfaces vary as a result.
This causes issues for managing devices centrally. (7)
What is the simple idea of SDN that helps make networks more manageable? -
CORRECT ANSWER-Separate tasks into control plane and data plane. (7)
What are the 3 phases of history of SDN? - CORRECT ANSWER-1. Active
networks
2. control plane and data plane separation
,3. OpenFlow API and network operating systems (7)
What led to the growth of active networks, and what is their goal? - CORRECT
ANSWER-1. the tediousness of standardizing new protocols
2. goal is to open up network control with an API that exposes resources and
supports *customization of functionalities* for subsets of packets passing through
network nodes
(7)
Why do active networks conflict with idea of E2E? - CORRECT ANSWER-They
require customization at network nodes (not simplicity at network core)
(7)
What were the two types of programming models in active networking? How are
thy different? - CORRECT ANSWER-1. Capsule model
- carries in band data packets
- most used in relation to active networking
- code distribution ACROSS networks
, - data plane
2. Programmable router/switch model
- out of band mechanisms
- decision-making a job for the NETWORK OPERATOR
- Difference is where the code to execute at the nodes was carried (7)
What are 4 tech developments that encouraged active networking? - CORRECT
ANSWER-1. reduction in computation cost (more processing can take place in
the network)
2. advancement in programming languages
3. advancement in rapid code compilation and formal methods
4. funding agencies promoted interoperability among projects
- necessary because there were no short-term use cases
(7)
and Correct Detailed Answers Already
Graded A+
What are 5 use cases for control plane/data plane? - CORRECT ANSWER-1.
path selection based on network traffic load
2. minimized disruptions during planned routing changes
3. redirecting or dropping suspected attack traffic
4. allow customer networks more control over network flow
5. offer value added services for virtual private network customers
(7)
What are 2 reasons computer networks are complex and difficult to manage that
led to the development of SDN? - CORRECT ANSWER-1. Diversity of network
equipment
2. Proprietary technology required for equipment
,Why would equipment diversity cause complexity when managing a network? -
CORRECT ANSWER-Different software must be used for different protocols (7)
Why do proprietary technologies cause complexity when managing networks? -
CORRECT ANSWER-Some equipment (router, switch, etc.) run on
closed/proprietary software
Configuration interfaces vary as a result.
This causes issues for managing devices centrally. (7)
What is the simple idea of SDN that helps make networks more manageable? -
CORRECT ANSWER-Separate tasks into control plane and data plane. (7)
What are the 3 phases of history of SDN? - CORRECT ANSWER-1. Active
networks
2. control plane and data plane separation
,3. OpenFlow API and network operating systems (7)
What led to the growth of active networks, and what is their goal? - CORRECT
ANSWER-1. the tediousness of standardizing new protocols
2. goal is to open up network control with an API that exposes resources and
supports *customization of functionalities* for subsets of packets passing through
network nodes
(7)
Why do active networks conflict with idea of E2E? - CORRECT ANSWER-They
require customization at network nodes (not simplicity at network core)
(7)
What were the two types of programming models in active networking? How are
thy different? - CORRECT ANSWER-1. Capsule model
- carries in band data packets
- most used in relation to active networking
- code distribution ACROSS networks
, - data plane
2. Programmable router/switch model
- out of band mechanisms
- decision-making a job for the NETWORK OPERATOR
- Difference is where the code to execute at the nodes was carried (7)
What are 4 tech developments that encouraged active networking? - CORRECT
ANSWER-1. reduction in computation cost (more processing can take place in
the network)
2. advancement in programming languages
3. advancement in rapid code compilation and formal methods
4. funding agencies promoted interoperability among projects
- necessary because there were no short-term use cases
(7)
