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

NEW QUESTION # 20
What is the metro area network?

• A. The metro area network is that portion of network that passes through a city to provide connections to several customers.
• B. The metro area network is made of OCS/SWDM nodes only, as no pure photonic nodes are used here.
• C. The metro area network is located between access and core domains.
• D. The metro area network is located in between two access area networks and made of photonic nodes only (no OCS/SWDM nodes are used there).

Answer: A Explanation:
The Metro Area Network (MAN) is a telecommunications network that spans a metropolitan area and connects multiple local area networks (LANs) or business networks together. It typically covers an area that is larger than a LAN but smaller than a wide area network (WAN). The purpose of a MAN is to provide a high-bandwidth, low-latency communication infrastructure for businesses and other organizations in a metropolitan area.
Reference:
Cisco, "Metro Ethernet Services," https://www.cisco.com/c/en/us/solutions/service-provider/metro-ethernet-services/index.html Techopedia, "Metro Area Network (MAN)," https://www.techopedia.com/definition/26896/metro-area-network-man
NEW QUESTION # 21
What is the OAMP LAN interface?

• A. It is an RJ-45 interface (a common Ethernet port) that has to be configured with an IP address for node reachability and management
• B. It is an RJ-45 interface (common Ethernet port) used to connect one or more client ports (e.g., 1Gb/s or legacy 100Mbit/s client flows)
• C. It is an RJ-45 interface (a common Ethernet port) used for cascading 1830 PSS nodes (e.g., external shelves)
• D. It is an RJ-45 interface (a common Ethernet port) used to export active alarms to an external device, typically equipped with several LEDs

Answer: A Explanation:
It is an RJ-45 interface (a common Ethernet port) that has to be configured with an IP address for node reachability and management. This interface is used to connect the OAMP node to the LAN, allowing it to be managed and monitored remotely.
NEW QUESTION # 22
Is it possible to open and manage EPT designs that are created with different releases than the release installed on the local workstation?

• A. No restrictions are imposed on the software release.
• B. Only designs created with current and older releases can be opened and edited.
• C. Only designs created with the current release can be opened and edited.
• D. Designs created with an older release can be opened by a current release but cannot make changes.

Answer: B Explanation:
It is possible to open and manage EPT designs that are created with different releases than the release installed on the local workstation, however only designs created with current and older releases can be opened and edited. Designs created with an older release can be opened by a current release but changes cannot be made.
NEW QUESTION # 23
What is the definition of OSNR?

• A. The OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth.
• B. The OSNR is defined as the ratio between the optical signal power (including noise) and the optical noise power over a specific spectral bandwidth.
• C. The OSNR is defined as the ratio between the transmitted optical power and the received optical power over 1 km of fiber including both signal and optical noise.
• D. The OSNR is the ratio between the optical output signal power and the optical input signal power of the device being analyzed.

Answer: A Explanation:
The OSNR is defined as the ratio between the average optical signal power and the average optical noise power over a specific spectral bandwidth. This is also known as the signal-to-noise ratio (SNR), and it is a measure of how much signal is present in the optical signal compared to the noise, usually expressed in decibels (dB).
NEW QUESTION # 24
In which window(s) does the attenuation reach its minimum peak?

• A. Third window (1550 nm)
• B. Both first and second windows
• C. First window (850 nm)
• D. Second window (1300 nm)

Answer: A Explanation:
The third window (1550 nm) is where the attenuation reaches its minimum peak. This is because the materials used in fiber optic cables have minimal absorption in this wavelength range. The first and second windows (850 nm and 1300 nm respectively) have higher attenuation due to the materials used in the fiber optic cables.
NEW QUESTION # 25
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