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NO.1 After developing prototype applications in the public cloud, developers determined that they
want softwaredefined network functionality. Which ability will this requirement provide for the
developers?
A. Programmatically control physical core network topologies
B. Programmatically provision physical network segments and services
C. Programmatically migrate layer-3 access from aggregate to access switches
D. Programmatically provision an IPsec VPN tunnel between the public and private clouds
Answer: B
E20-020 exam prep
Explanation:
Software-defined networking (SDN) is an approach to computer networking that allows network
administrators to manage network services through abstraction of higher-level functionality. This is
done by decoupling the system that makes decisions about where traffic is sent (the control plane)
from the underlying systems that forward traffic to the selected destination (the data plane).
Reference: https://en.wikipedia.org/wiki/Software-defined_networking
E20-020 exam prep
NO.2 A cloud architect has included an SDS controller in a cloud design. Which requirement(s) will
support the addition of this component to the design?
A. Provide a redundant front-end for object storage
B. Monitor storage performance and manually provision storage resources
C. Provide the ability to programmatically deploy virtual storage resources
D. Switch array functionality from active/passive to active/active
Answer: C
Explanation:
Software-defined storage (SDS) is an evolving concept for computer data storage software to manage
policybased provisioning and management of data storage independent of the underlying hardware.
Software-defined storage definitions typically include a form of storage virtualization to separate the
storage hardware from the software that manages the storage infrastructure. References:
https://en.wikipedia.org/wiki/Software-defined_storage
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