4A0-F10 Free Exam Questions & Answers (Updated 2026)

Question No 1

Which of the following statements correctly describes downstream and upstream transmission in a GPON network?

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Downstream traffic uses time slots assigned individually by each ONT, while upstream traffic is broadcast to all ONTs.

Both downstream and upstream traffic are continuously broadcast without coordination by the OLT.

Downstream traffic is broadcast from the OLT toward the ONTs, while upstream transmissions use OLT - controlled time slots.

Downstream and upstream traffic require separate optical fibers between the OLT and each ONT.

Question No 2

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

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Question No 3

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

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To combine two or more copper pairs into one logical connection

To cancel far - end crosstalk among coordinated copper lines

To divide optical power among multiple subscribers

To replace frequency - division duplexing with wavelength - division multiplexing

Question No 4

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

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Question No 5

A residential gateway ONT provides routed Internet access to devices in a subscriber’s home. Which DHCP role does it normally perform on the home LAN?

Choose the Choices:

It acts as a DHCP server and assigns private IP addresses to home devices.

It acts only as a DHCP relay and never maintains address information.

It acts as a DHCP client for every device connected to the LAN.

It disables local addressing and assigns public addresses directly from the OLT.

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