23. WAN optimization provides A) network protocol acceleration B) caching C) bot

Question

23. WAN optimization provides A) network protocol acceleration B) caching C) both A and B D) neither A nor B 24. Label-switching routers bring A) lower cost B) the ability to do traffic engineering C) quality of service D) all of the above 25. Why is Carrier Ethernet popular? A) It uses a familiar technology B) It has attractive prices. C) both A and B D) neither A nor B Answer: C 26. A router's load-balancing process is determined by A) the SDN controller B) an SDN application C) the router D) any of the above 27) Communication between SDN applications and SDN controllers is governed by A) northbound APIs B) southbound APls C) both A and B D) neither A nor B 28) OpenFlow can be used to standardize A) northbound APls B) southbound APls C) both A and B D) neither A nor B

Explanation / Answer

23. Answer is A. WAN Optimization provides network protocol acceleration, WAN optimization can be defined as technique to utilize all of the efficiency that can be presented for data flow across a wide area network.

24. Answer is C. Label-Swirching Routers Bring quality of service, Label switching routers are responsible for routing the data flow in Label-switched networks, that are made up of predetemined paths, thus resuting in quickly routing of data packets.

25. Answer is C. Carrier Ethernet is popular because, It uses a popular technology and it has attractive prices, as Carrier ethernet is the extension term for ethernet that supports telecommunication network providers to support the Ethernet services and since as an extension of Ethernet, Carrier Ethernet supports both the technology of Ethernet in attractive prices.

26. Answer is D. The SDN controller, can be defined as application software that intelligentlly routes the Switch or other network components, thus resulting in the load-balancing process,
SDN applications, provides the software support for SDN controller,
the router, uses rouer tables for the purpose of load balancing

27. Answer is A. Communication between SDN applications and SDN Controllers is governed by northbound APIs, northbound APIs are responsible for efficient orchestration and automation of the network alignment.

28. Answer is C. OpenFlow is used to standardize both northbound and southbound APIs,

For, southbound APIs, SDN controller, relaying information to switches/routers

For, northbound APIs, SDN Controller, for application and business logic

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