Q. The bit stuffing in the plesiochronous digital hierarchy is complex and uneconomic.

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Q. A ____________ digital hierarchy was required to enable the international communications network to evolve in the optical fiber era.

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Q. The standardization towards a synchronous optical network termed SONET commenced in US in _______

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Q. ______________ is a packetized multiplexing and switching technique which combines the benefits of circuit and packet switching.

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Q. The ___________ sits at the top of hierarchy of the OSI layer model.

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Q. The ____________ controls the dialogs between intelligent devices.

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Q. The network layer looks after the flow and error control mechanism.

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Q. The physical layer is located at the bottom of the OSI model.

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Q. In order to access for end-to-end networking of optical channels to transparently convey information, the _____________ is employed in the OTN structure.

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Q. An advanced type of reconfigurable OTN is referred to as an _______________

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Q. The __________ is a network layer that contains both addressing and control information to enable packets to be routed within a network.

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Q. The mapping of IP frames in SDH/SONET is accomplished in ___________ stages.

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Q. Which of the following is used to provide wavelength signal service among the nodes?

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Q. How many types of hopping are present?

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Q. How many switching layers are possessed by MG-OXC?

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Q. _____________ supports a great number of wavelength channels and reduces the number of switches within the optical network.

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Q. Individual wavelength channels and wavebands are terminated through ________________ layers.

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Q. The routing and wavelength assignment problem addresses the core issue of _____________

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Q. How many techniques of implementation are there for routing wavelength assignment (RWA)?

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Q. ____________ deals with establishing the light path in frequently varying traffic patterns.

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