WGU - Software Defined Networking - D415 Exam with accurate detailed solutions

WGU - Software Defined Networking - D415 || || || || || || ||




Exam with accurate detailed solutions || || || ||




Network Functions Virtualization (NFV) || || ||




Moved network functions from stand-alone appliances to software running on any server,
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reducing the time-to-market for products. || || || ||




Software-Defined Networks (SDN) || ||




This architecture decouples the network control and forwarding functions enabling the network
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control to become directly programmable and the underlying infrastructure to be abstracted for
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applications and network services. || || ||




NFV Components ||




Virtual Network Functions (VNFs) || || ||




Network Functions Virtualization Infrastructure (NFVI) || || || ||




NFV Management and Orchestration (NFV-MANO)
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NFV Management and Orchestration (NFV-MANO)
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Consists of all functional blocks, data repositories, reference points, and interfaces that are used
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for managing and orchestrating VNFs and the NFVI.
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Network Functions Virtualization Infrastructure (NFVI) || || || ||




Is the entirety of the hardware and software components that build the environment where VNFs
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are deployed.
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Virtual Network Functions (VNFs) || || ||




Are the software implementations of network functions.
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Open Platform for NFV (OPNFV) || || || ||




Created by the Linux Foundation in 2014 and is a collaborative open-source platform that seeks to
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develop NFV and shape its evolution.
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OpenStack
An open-source cloud computing platform that has high market penetration that includes a
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collection of interoperable modules that are used to orchestrate large pools of compute, storage,
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and networking resources.
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Nova

,OpenStack compute module, is used to create and delete compute instances as required.
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Glance
OpenStack module that synchronizes and maintains VM images across the com pute cluster.
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Keystone
Module that provides authentication for accessing all OpenStack services.
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Cinder
OpenStack module that provides block storage used as storage volumes for VMs.
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Swift
OpenStack module that provides object storage that is used to store large amounts of static data in
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a cluster.
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Neutron
or networking, OpenStack module that allows the different compute instances and storage nodes
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to communicate with each other.
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Horizon
OpenStack module provides a GUI dashboard, and is by far the most widely deployed
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management module. ||




Heat
OpenStack module that helps expedite orchestration of applications across multiple compute
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instances by using templates.
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Celiometer
OpenStack module that monitors the NFVI and helps identify bottlenecks and resource
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optimization opportunities. ||




Ironic
OpenStack module that is a provisioning tool for baremetal installation of compute capabilities
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instead of VMs in OpenStack.
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Congress
OpenStack module that is a policy management framework for the OpenStack environment.
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Designate

, OpenStack module that is used to point applications in the OpenStack environment to a trusted
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DNS source. ||




Barbican
OpenStack module that works with Keystone authentication to manage internal application
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security by behaving as a key manager.
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Murano
OpenStack module that provides a white list repository of applications.
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Trove
OpenStack module that provides a distributed database service and enables users to deploy
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relational and non-relational database engines.
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Sahara
OpenStack module formerly called Savanna, provides big data services by providing Elastic
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MapReduce and ability to provision Hadoop. || || || || ||




Manila
Openstack module that provides Network Area Storage (NAS) solutions for an OpenStack
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deployment.
Zaqar
OpenStack module that provides a multi-tenant cloud messaging service.
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Magnum
OpenStack module that is an umbrella project that provides containerization assistance. This
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module is still in development.
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Dynamic Host Configuration Protocol (DHCP)
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A network management protocol used to dynamically assign an Internet Protocol (IP) address to
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any device, or node, on a network so they can communicate using IP.
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UDP port number 67
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Destination port of a DHCP server || || || || ||




UDP port number 68
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Destination port of a DHCP client || || || || ||




ioctl interface
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