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Nokia Optical Networking Fundamentals Sample Questions (Q20-Q25):

NEW QUESTION # 20
A user needs to check for interface details against the commands is the correct one?

  • A. 11starla 1/17 port-detail
  • B. config interface detail 1/17/L1
  • C. show interface 11starla 1/17/L1 detail
  • D. config card 11star1a interface 1/17 detail

Answer: C Explanation:
show interface 11starla 1/17/L1 detail is the correct command to check for interface details. This command will display detailed information about the specified interface, including its status, configuration, and statistics.
NEW QUESTION # 21
What is the function of a pre-amplifier in an optical network?

  • A. Through the pre-amplifier, the optical signal is amplified at the transmitter side before it is sent to the line span.
  • B. Through the pre-amplifier, the optical signal is amplified both the receiver side and at the transmitter side.
  • C. Through the pre-amplifier, the optical signal is amplified at the receiver side after it travels along the fiber from another node.
  • D. Through the pre-amplifier, the optical signal is amplified within the node internally to recover internal losses due, for instance, to cascaded filters.

Answer: A Explanation:
A pre-amplifier is an optical amplifier that is used to boost the power of the received optical signal before it is detected by the receiver in an optical communication system. This is done to overcome the loss of power that occurs as the signal travels through the optical fiber and to ensure that the receiver can detect the signal. The pre-amplification stage is typically located close to the receiver in order to minimize the distance that the signal has to travel between the amplifier and the receiver, which helps to reduce the noise and distortion in the signal.
NEW QUESTION # 22
What is a Shared Risk Group (SRG)?

  • A. A set of boards that share the same failure risk
  • B. A set of network resources that share a common failure risk
  • C. A set of nodes that share a common risk of hardware failure
  • D. A set of fibers that share the same latency risk

Answer: B Explanation:
According to the Nokia Optical Networking documentation, a Shared Risk Group (SRG) is defined as "a set of network resources that share a common failure risk. When a resource in an SRG fails, the other resources in the group are also affected." This can include fibers, boards, nodes, and other network resources. The SRG concept is used in network design and protection mechanisms to ensure survivability and minimal impact on service in case of a failure.
NEW QUESTION # 23
Which of the following sentences about FlexGrid is false?

  • A. The FlexGrid is currently standardized by ITU-T.
  • B. FlexGrid allows a more efficient channel spacing.
  • C. Channels in FlexGrid systems are allocated with a granularity of 27.5GHz.
  • D. FlexGrid systems use specific sets of boards. Old generation WDM systems need to be upgraded to support FlexGrid.

Answer: D Explanation:
FlexGrid is a flexible grid technology that allows for variable channel spacing and bandwidth allocation. It uses the same sets of boards as the traditional fixed grid systems and it does not require upgrading the old generation WDM systems.
Reference:
"Flexible Grid Optical Networks: From Concepts to Realizations" by Diomidis S. Michalopoulos and George K. Karagiannidis
"Flexible Grid and Flexible Spectrum Optical Networks" by Diomidis S. Michalopoulos and George K. Karagiannidis
"Flexible Grid Optical Networks" by Diomidis S. Michalopoulos and George K. Karagiannidis
NEW QUESTION # 24
Which macro steps can be executed via CPB?

  • A. Power adjustment and generation of the system loss report
  • B. Node creation, systems validation and system provisioning
  • C. Node supervision, system validation and system provision
  • D. Systems validation, system provisioning, power adjustment

Answer: B Explanation:
Node creation, systems validation and system provisioning. The CPB (Commissioning Parameter Builder) application is used to generate commissioning files for a Nokia 1830 Photonic Service Switch (PSS-1) and can be used to create new nodes, validate the system configuration, and provision the system with the appropriate settings and parameters. Power adjustment and generation of system loss report are not related to CPB.
NEW QUESTION # 25
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