Future Networks - SDN & NFV

1. Application of NGN allows operator to move from

		a)	vertical silo architecture to horizontal architecture which is more independent from provided services.
		b)	horizontal architecture to vertical silo architecture which is more independent from provided services.
		c)	vertical silo architecture to diagonal architecture which is more independent from provided services.
		d)	horizontal architecture to diagonal silo architecture which is more independent from provided services.

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2. Within the NGN concepts the standardization institutions don't have to

		a)	solve roaming and mobility problems.
		b)	solve existing networks migration towards NGN.
		c)	solve connection of other networks to ISDN networks
		d)	solve interworking of signaling systems.

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3. Which layer of NGN conceptual model provides the infrastructure

		a)	the access layer
		b)	the service layer
		c)	the control layer
		d)	the transport layer

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4. What is always advantage of simulations?

		a)	great flexibility and repeatability
		b)	running in non real time
		c)	separation from real network
		d)	expensive preparation

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5. The concept of SDN lies in

		a)	separation of network management and network control.
		b)	separation of network management and data forwarding plane.
		c)	separation of network control and data forwarding plane.
		d)	separation of physical network (plane) from data forwarding plane.

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6. In SDN

		a)	every device gathers information about the network and makes routing decisions by itself.
		b)	only network devices gather information about the network and make routing decisions by themselves.
		c)	only selected switches gather information about the network and make routing decisions by themselves.
		d)	centralized control is used.

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7. In networks with distributed control plane

		a)	all network nodes make routing decisions locally.
		b)	single point of failure is the serious problem.
		c)	network nodes are less independent.
		d)	network nodes can handle network traffic faster.

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8. In networks with centralized control plane

		a)	all network nodes make routing decisions locally.
		b)	network nodes are expensive.
		c)	network nodes are more independent.
		d)	network nodes can handle network traffic faster.

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9. The OpenFlow protocol defines communication interface between

		a)	control plane and forwarding plane devices.
		b)	management plane and forwarding plane devices.
		c)	control plane and physical plane devices.
		d)	management plane and physical plane devices.

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10. Which statement about NETCONF is not correct?

		a)	NETCONF is a network management protocol.
		b)	It is divided into four layers with a set of base protocol operations using RPC methods.
		c)	It was developed as a successor to OpenFlow protocol.
		d)	NETCONF capabilities can be used to create a form of a hybrid SDN.

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11. Protocols supporting SDN are:

		a)	OpenFlow, ForCES, ISDN
		b)	OpenFlow, ForCES, I2RS
		c)	NETCONF, OpenFlow, SIP
		d)	SIP, ForCES, OpenFlow

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12. What doesn't belong to benefits NFV offers?

		a)	opportunities for testing and deployment of new innovative services with higher risk
		b)	greater flexibility and scalability for developing services
		c)	reducing CAPEX (capital expenditure)
		d)	reducing OPEX (operational expenses)

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13. What has enabled NFV?

		a)	large amount of capital
		b)	availability of high performance industry standard servers
		c)	availability of smart technologies
		d)	digital television

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14. NFV architecture contains

		a)	network functions virtualization infrastructure (VNFI) which covers orchestration and lifecycle management of physical and software tools.
		b)	virtualized network feature (VNF) which provides virtual resources needed to support the implementation of virtualized networking functions.
		c)	NFV MANO (management and orchestration) which provides virtual resources needed to support the implementation of virtualized networking functions.
		d)	VNF which represents software implementation of network functions.

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15. Infrastructure NFV is divided into three domains:

		a)	compute, hypervisor and infrastructure networking domains
		b)	compute, hypervisor and management domains
		c)	management, hypervisor and infrastructure networking domains
		d)	compute, application and infrastructure networking domains

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16. Within Infrastructure NFV the creation of a channel for communication between multiple VNF is realised by

		a)	compute domain
		b)	hypervisor domain
		c)	infrastructure network domain
		d)	management domain

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17. Virtualized Infrastructure Manager (VIM) is responsible for

		a)	managing the lifecycle of instances of the VNF.
		b)	control and management of the NFVI computing, memory and network resources within the infrastructure sub-domains.
		c)	overall coordination and adaptation of configurations and incident reporting between NFVI and E/NMS.
		d)	lifecycle management of network services (e.g. scaling, performance measurement, event correlation).

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18. NFV Orchestrator is responsible for

		a)	managing the lifecycle of instances of the VNF.
		b)	control and management of the NFVI computing, memory and network resources within the infrastructure sub-domains.
		c)	overall coordination and adaptation of configurations and incident reporting between NFVI and E/NMS.
		d)	lifecycle management of network services (e.g. scaling, performance measurement, event correlation).

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19. What is not attractive for cloud service providers to provide as virtualised network function?

		a)	digital television over satellite
		b)	virtual routing
		c)	virtual private network
		d)	security services

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20. Current Internet is mainly based on

		a)	SDN technology.
		b)	NFV technology.
		c)	ISDN.
		d)	IP protocol.

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21. For what services isn't the best effort model of Internet sufficient?

		a)	data transmissions
		b)	video streaming
		c)	e-mail
		d)	chat

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22. What statement is correct?

		a)	Operating expenses (OPEX) refer to investments that must be made in advance and written off after a certain period of time.
		b)	An example of OPEX would be the construction of the data center.
		c)	Capital expenses are associated with recurrent monthly costs of actual equipment operation.
		d)	Examples of OPEX are e.g. energy costs, salaries of administrative staff.

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23. Future networks should be

		a)	unsecured
		b)	anonymous
		c)	fault-tolerant
		d)	fixed

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24. A clean slate Internet is

		a)	a concept where new architecture and protocols for Future Internet will be newly defined and designed.
		b)	evolutionary concept based on NGN architecture.
		c)	evolutionary concept to create NGN based Internet.
		d)	a concept to integrate SDN a NFV to the current Internet.

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