What is a degree-1 node?
A
Explanation:
A degree-1 node is a node that only has one direction, and it is therefore a terminal node. This
means that the node only has one input and one output port. It does not have any other ports to
connect to other nodes or fibers. This is a common feature of some optical transport networks, such
as ring networks, where a degree-1 node serves as the endpoint of the ring.
With reference to trails and services, which of the following sentences is correct?
C
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.
What is a trail?
B
Explanation:
A trail is a transparent transport of a client signal. A trail is a physical link between two points in an
optical network, allowing for the transport of a client signal from one point to the other. It is a low-
order signal, such as a 10G Ethernet or a Fibre Channel signal, encapsulated into a high-order
container, such as a 40G or 100G signal. This allows for the transport of the client signal over longer
distances, increasing the power budget of the optical link.
Which use case is most suitable for the deployment of a star topology?
A
Explanation:
A star topology is a network design where all devices are connected to a central hub, which acts as a
central point of control and management for the network. This type of topology is commonly used in
access networks, where a central node is used to aggregate traffic from multiple users or devices,
and then forward it to the core network. This design allows for efficient use of resources and easy
management of the network.
Reference:
"Computer Networking: A Top-Down Approach" by James Kurose and Keith Ross (Chapter 3)
"Data Communications and Networking" by Behrouz A. Forouzan (Chapter 2)
What is the metro area network?
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
A user needs to check for interface details against the commands is the correct one?
A
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.
What is the OAMP LAN interface?
B
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.
Which of the following statements is true?
A
Explanation:
A log is a record of events that have occurred within a system, such as a network device or an
application. Logs can include information about system activity, configuration changes, and error
messages. They can be used for troubleshooting, auditing, and compliance purposes. Logs can report
both active (real-time) and historical events that have occurred within a system.
Alarms and conditions, on the other hand, are used to notify operators of real-time status of the
node, such as when a threshold is breached or when a specific event occurs. Alarms and conditions
are typically used to provide real-time notifications of potential problems or issues, while logs are
used to provide a historical record of what has occurred.
Reference:
-
https://en.wikipedia.org/wiki/System_log
-
https://www.cisco.com/c/en/us/td/docs/net_mgmt/ciscoworks_common_services_software/3-1/user/guide/logs/logs.html
-
https://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/3-4/user/guide/alarms/alarms.html
Which of the following applications is related to Wavelength Tracker tool?
B
Explanation:
Tracking the protection path for a specific wavelength. The Wavelength Tracker tool is used to track
the protection path of a specific wavelength, allowing the user to quickly identify any issues that may
arise and take corrective action.
Wavelength Tracker tool is a feature used to monitor and track the protection path for a specific
wavelength in an optical network. It can also be used to monitor and verify the working state of the
protection path, and to detect and troubleshoot protection switch events. The Wavelength Tracker
tool can be used to monitor the protection path for a specific wavelength, and it can also be used to
trace the end-to-end path of a wavelength through the network. This tool is typically used by
network operators to monitor and troubleshoot wavelength-level issues in the network, such as
protection switch events or wavelength-level performance issues.
Is it possible to modify node parameters within the edit EPT menu?
D
Explanation:
Yes, the user can apply manual changes but only for non-GMPLS nodes, as the control plane reserves
node resources not editable by the user. The edit EPT menu allows the user to view information
about a node but is not used to modify node parameters. The user can only apply manual changes to
non-GMPLS nodes, as the control plane reserves node resources which cannot be modified by the
user.