Q. In _________, the station configuration is unbalanced. We have one primary station and multiple secondary stations.

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Q. In _________, the configuration is balanced. The link is point-to-point, and each station can function as a primary and a secondary.

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Q. In PPP, the ________ is responsible for establishing, maintaining, configuring, and terminating links.

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Q. In PPP, ________ is a simple authentication procedure with a two-step process.

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Q. In PPP, _______ is a three-way hand-shaking authentication protocol in which the password is kept secret; it is never sent online.

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Q. _______ is a standard developed by ANSI for fiber-optic networks.

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Q. _______ is a standard developed by ITU-T.

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Q. SONET has defined a hierarchy of signals called ________.

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Q. SDH has defined a hierarchy of signals called ________.

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Q. An ______ signal is the optical modulation of an STS-n (or STM-n) signal.

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Q. SONET defines _______ layers.

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Q. SONET is a _______ TDM system.

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Q. A SONET system can use _________.

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Q. SONET sends ________ frames per second.

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Q. In SONET each frame lasts _______ microseconds.

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Q. An STS-1 frame is made of ________ rows.

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Q. An STS-1 frame is made ______columns.

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Q. An STS-3 frame is made of ______ rows.

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Q. An STS-3 frame is made of ________ columns.

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Q. SONET network topologies can be __________.

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