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| Section | Objectives |
|---|---|
| Fixed network architectures and broadband access | - Passive Optical Networks (PON) - FTTH and FTTx technologies - Optical Distribution Network (ODN) - Fixed Wireless Access (FWA) - Broadband network architecture |
| Nokia fixed access portfolio | - Optical Network Terminals (ONTs) - Lightspan FX and MF Optical Line Terminals - Home networking devices - FastMile FWA solutions |
| Software Defined Access Network (SDAN) | - Network topology and service health - Corteca platform - Subscriber and service management - Altiplano Access Controller |
| Management interfaces and automation | - Telemetry and automation concepts - NETCONF - YANG data models - CLI fundamentals |
| Service delivery and operations | - Network monitoring and troubleshooting - Voice, Internet and IPTV services - Service provisioning - High-Speed Internet (HSI) |
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NEW QUESTION # 12
Which transport protocol is commonly used to provide a secure connection for NETCONF sessions?
Answer: D
Explanation:
NETCONF is commonly transported over Secure Shell, which provides encryption, integrity protection, and peer authentication for the management session. After establishing the secure transport connection, the client and server exchange NETCONF capabilities and use RPC messages to retrieve or modify device data. IGMP manages IPv4 multicast group membership and does not provide a secure management transport. ARP resolves IPv4 addresses to Layer 2 hardware addresses within a local network. SIP establishes and manages communication sessions such as voice calls. Although NETCONF can conceptually operate over supported secure transports, NETCONF over SSH is the widely recognized deployment model. Secure transport is particularly important because NETCONF can expose operational information and perform configuration changes that materially affect access-network devices and subscriber services.
NEW QUESTION # 13
A provider wants to separate every subscriber's traffic throughout the access network, even when subscribers use the same service. Which VLAN model best meets this requirement?
Answer: C
Explanation:
A VLAN-per-subscriber model assigns a distinct VLAN context to each subscriber, providing clear Layer 2 separation between subscribers even when they consume the same service. This can simplify subscriber identification and support individual policy or forwarding treatment, but it requires the network to accommodate a larger number of VLANs. In a VLAN-per-service model, multiple subscribers using the same service can share a service VLAN toward the aggregation network. The access node must then preserve subscriber isolation through other forwarding controls and map traffic correctly between subscriber-facing and network-facing interfaces. Using one untagged VLAN for the entire access network provides insufficient segmentation. Assigning a VLAN to each multicast channel categorizes content rather than uniquely separating individual subscribers and therefore does not meet the stated requirement.
NEW QUESTION # 14
Which of the following statements correctly distinguishes traffic shaping from traffic policing?
Answer: B
Explanation:
Traffic shaping regulates an outgoing traffic stream by buffering packets that temporarily exceed the configured rate and transmitting them later. This smooths bursts but can introduce additional latency because packets remain in a queue. Traffic policing checks traffic against configured rate limits without normally delaying nonconforming packets. Depending on the policy, packets exceeding the permitted profile can be dropped or marked with a lower priority. Both mechanisms are QoS tools and are independent of whether the physical access medium is fiber, copper, or wireless. They also do not control multicast membership or VLAN assignment. In a fixed-access network, shaping can help produce a smoother egress rate, while policing can enforce subscriber or service bandwidth limits at an ingress boundary.
NEW QUESTION # 15
Which architectural principle is fundamental to Software-Defined Networking?
Answer: A
Explanation:
A central principle of Software-Defined Networking is the separation of control logic from packet-forwarding functions. The data plane remains responsible for forwarding traffic, while logically centralized control software determines policies and programs network behavior through defined interfaces. Logically centralized does not necessarily mean that all controller functions run on one physical server; they may be distributed for scalability and resilience while presenting a coordinated control view. SDN emphasizes programmability, automation, abstraction, and the use of APIs. It does not require every forwarding device to independently make all high-level policy decisions. It also avoids tightly coupling every function into one fixed proprietary system. In fixed-access networks, these concepts help operators automate service delivery and manage different access devices through common models and controller applications.
NEW QUESTION # 16
Which Altiplano intent is used to define the uplink interfaces that connect an OLT toward the aggregation network?
Answer: B
NEW QUESTION # 17
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