4A0-F10 Exam Training Practice Tests (Nokia Fixed Networks Fundamentals)]

Question 1

Which component of a typical Optical Distribution Network requires no electrical power to perform its primary function?

A. Passive optical splitter B. Optical network termination C. Residential gateway D. Optical line termination

Correct Answer: A

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Question 2

What is the primary purpose of vectoring in a DSL access network?

A. To divide optical power among multiple subscribers B. To replace frequency-division duplexing with wavelength-division multiplexing C. To combine two or more copper pairs into one logical connection D. To cancel far-end crosstalk among coordinated copper lines

Correct Answer: D

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Question 3

What is the primary function of the cladding in an optical fiber?

A. To convert electrical signals into optical signals B. To amplify optical signals over long distances C. To keep light confined within the fiber core D. To divide one optical signal among multiple subscribers

Correct Answer: C

Question 4

In a GPON system using Dynamic Bandwidth Allocation, which device determines when an ONT may transmit upstream traffic?

A. Passive optical splitter B. Ethernet aggregation switch C. Residential gateway D. Optical line termination

Correct Answer: D

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Question 5

In a Lightspan High-Speed Internet service architecture, what is the role of the HSI VPLS on the IHUB?

A. It switches HSI traffic between service forwarders and network-facing interfaces. B. It assigns Wi-Fi channels to residential gateways. C. It converts optical signals into analog telephone signals. D. It performs DSL crosstalk cancellation on copper pairs.

Correct Answer: A

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Nokia Fixed Networks Fundamentals - 4A0-F10 Exam Practice Test