CS6250 COMPUTER NETWORK EXAM 2
(ACTUAL 2025) WITH 200+ QUESTIONS AND
VERIFIED ANSWERS GRADED A+
.
What spurred the development of SDN? - <<<Answers>>>1.
Diversity of equipment: Too many different tools make
network management complex
2. Proprietary Technologies
What are the three phases in history of SDN? -
<<<Answers>>>1. Active Networks
2. Control and data plane separation
3. OpenFlow API and network operating systems
Active Networks summary - <<<Answers>>>resulted in
1. programmable functions in the network to lower the barrier
to innovation
2. Network virtualization, and the ability to demultiplex to
software programs based on packet headers
3. the vision of a unified architecture for middlebox
orchestration
,Control and data plane separation summary -
<<<Answers>>>Open interface between control and data
planes
Logically centralized control of the network
openflow API summary - <<<Answers>>>generalizing
network devices and functions
the vision of a networked operating system
distrubted state management techniques
What is the function of the control and data planes? -
<<<Answers>>>Selecting between network paths based on
current traffic load
Minimizing disruption during outages
Redirecting/dropping suspected traffic
Allowing customer networks more control over traffic flow
Offering value-added services for VPN customers
Why separate control plane from the data plane? -
<<<Answers>>>Separation of the control and data planes
supports the indepedent evolution and development of both.
Makes it easier to debug
, Why did the SDN lead to opportunities in various areas such
as data centers, routing, enterprise networks, and research
network? - <<<Answers>>>1. Data centers easier to manage
2. Routing - With SDN, its easier to update the routers state,
and SDN can provide more control over path selection
3. Enterprise networks: SDN can improve the security
applications for enterprise networks.
4. Research networks : SDN allows them to exist
What is the relationship between forwarding and routing? -
<<<Answers>>>When a packet is receevied at an input link,
it must determine which output lin kthat the packet should be
sent through. Forwarding is part of the DATA PLANE
Routing is determining the path from the sender to receiver
across the network. This happens in software AKA THE
CONTROL PLANE
What's the difference between a traditional and SDN approach
for the control/data plane? - <<<Answers>>>In SDN, there is
a remote controller that computes and distributes the
forwarding tables to be used by every router. It's in some
remote data center.
that means the router is slowly responsible for forwarding
(ACTUAL 2025) WITH 200+ QUESTIONS AND
VERIFIED ANSWERS GRADED A+
.
What spurred the development of SDN? - <<<Answers>>>1.
Diversity of equipment: Too many different tools make
network management complex
2. Proprietary Technologies
What are the three phases in history of SDN? -
<<<Answers>>>1. Active Networks
2. Control and data plane separation
3. OpenFlow API and network operating systems
Active Networks summary - <<<Answers>>>resulted in
1. programmable functions in the network to lower the barrier
to innovation
2. Network virtualization, and the ability to demultiplex to
software programs based on packet headers
3. the vision of a unified architecture for middlebox
orchestration
,Control and data plane separation summary -
<<<Answers>>>Open interface between control and data
planes
Logically centralized control of the network
openflow API summary - <<<Answers>>>generalizing
network devices and functions
the vision of a networked operating system
distrubted state management techniques
What is the function of the control and data planes? -
<<<Answers>>>Selecting between network paths based on
current traffic load
Minimizing disruption during outages
Redirecting/dropping suspected traffic
Allowing customer networks more control over traffic flow
Offering value-added services for VPN customers
Why separate control plane from the data plane? -
<<<Answers>>>Separation of the control and data planes
supports the indepedent evolution and development of both.
Makes it easier to debug
, Why did the SDN lead to opportunities in various areas such
as data centers, routing, enterprise networks, and research
network? - <<<Answers>>>1. Data centers easier to manage
2. Routing - With SDN, its easier to update the routers state,
and SDN can provide more control over path selection
3. Enterprise networks: SDN can improve the security
applications for enterprise networks.
4. Research networks : SDN allows them to exist
What is the relationship between forwarding and routing? -
<<<Answers>>>When a packet is receevied at an input link,
it must determine which output lin kthat the packet should be
sent through. Forwarding is part of the DATA PLANE
Routing is determining the path from the sender to receiver
across the network. This happens in software AKA THE
CONTROL PLANE
What's the difference between a traditional and SDN approach
for the control/data plane? - <<<Answers>>>In SDN, there is
a remote controller that computes and distributes the
forwarding tables to be used by every router. It's in some
remote data center.
that means the router is slowly responsible for forwarding
