4A0-205

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The dumps for 4A0-205 exam was last updated on Apr 01,2026 .

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Question#1

What is the purpose of the NFM-T deploy menu?

A. It is used to deploy additional shelves to existing SWDM nodes.

B. It is used to import EPT files to deploy the network based on the EPT design.

C. It is used to deploy new operators (administrator, observers, and so on) to access the platform.

D. It is used to create new network instances, such as physical connections, infrastructures and services.

Explanation:
The NFM-T (Network Functions Manager - Transport), now part of the WaveSuite Network Operations Center (WS-NOC), is the centralized management system for Nokia's optical portfolio. The Deploy menu is the primary engine for operationalizing the network. Its fundamental purpose is to create and provision new network instances, which encompasses the lifecycle of the transport infrastructure.
Specifically, this menu allows operators to establish physical connections (fiber links between nodes), build out the infrastructure (defining the topology and node roles), and most importantly, provision services (such as ODUk or Optical Channel services). While the EPT (now WaveSuite Planner) designs the network, and those files can be used as a reference, the actual "birth" of a service in the live network―mapping it from the source transponder to the destination through the required ROADM degrees―is executed via the Deploy menu. It translates the high-level intent into specific cross-connect commands sent to the individual Network Elements (NEs), ensuring that the underlying hardware is correctly configured to carry client traffic.

Question#2

With reference to trails and services, which of the following sentences is correct?

A. Trails are transported over services; that is, trails are clients with respect to services.

B. A trail can interconnect three ports, while a service always two.

C. Services are transported over trails; that is, services are clients with respect to trails.

D. A service is always associated to a single wavelength, while a trail can involve multiple wavelengths.

Explanation:
Services are transported over trails; that is, services are clients with respect to trails. A service is a logical connection that is used to transport data from one point to another. It is created over a trail, which is a physical connection that is established by using multiple wavelengths. As such, services are clients with respect to trails, as they are transported over them.

Question#3

Where is the OPS card equipped to provide the optical channel protection?

A. Between the transponder and the amplifiers

B. Between the filters and the amplifiers

C. Before the transponder, on the clientside, towards the external device

D. Between the transponder and the filter

Explanation:
According to the Nokia's 1830 Photonic Service Switch (PSS) product documentation, the Optical Protection Switching (OPS) card is equipped in the transponder and is responsible for providing optical channel protection between the transponder and the amplifiers. The OPS card monitors the optical signal and switches to a pre-configured protection path in case of signal degradation or loss.

Question#4

What is the purpose of the NFM-T node synchronization?

A. The partial or full node synchronization allows several entities/items defined at node level to be retrieved into the NFM-T database (upload).

B. The partial or full node synchronization allows several entities/items defined at NFM-T level to be written into the node database (download).

C. The partial or full node synchronization allows several entities/items defined at EPT level to be retrieved into the NFM-T database (upload from design).

D. The partial or full node synchronization allows several entities/items defined at NFM-T level to be exported into an XML file, to be used as input for EPT (download to design).

Explanation:
NFM-T node synchronization is a process to ensure that the NFM-T database and the actual network nodes have consistent data. A full or partial node synchronization uploads the data from the node into the NFM-T database, ensuring that the NFM-T's view of the network is accurate and up to date.

Question#5

Which of the following statements about the contentionless feature on a CDC-F node is TRUE?

A. It represents the ability to support the Fixed Grid standard.

B. It represents the ability to drop any lambda from any Add/Drop block port.

C. It represents the ability to reroute lambdas to any direction.

D. It represents the ability to drop the same wavelength from different degrees.

Explanation:
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
The term CDC-F stands for Colorless, Directionless, Contentionless, and Flex-grid. While "Colorless" allows any wavelength on any port and "Directionless" allows any port to be routed to any output fiber (degree), Contentionless solves a specific physical limitation of traditional multiplexers. In a standard ROADM, you cannot drop the same wavelength (e.g., Channel 21) from two different directions (e.g., North and West) into the same add/drop structure because they would "contend" or collide on the same internal fiber.
A Contentionless architecture (typically utilizing a Multicast Switch or MCS) allows the node to drop the same wavelength from different degrees simultaneously without interference. This is critical for high-availability mesh networks where a single transponder might need to receive a specific wavelength from a primary path and a backup path. Without contentionless capabilities, operators would have to carefully manage wavelength assignments across the entire network to ensure no two identical frequencies ever meet at the same drop structure, which significantly complicates planning and restoration.

Exam Code: 4A0-205 Q & A: 59 Q&As Updated: Apr 01,2026

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Exam Code: 4A0-205
Q & A: 59 Q&As
Updated: Apr 01,2026

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