Cisco 350-501 Exam Questions
Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) (Page 7 )

Updated On: 30-May-2026
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Which CLI mode must be used to configure the BGP keychain in Cisco IOS XR Software?

  1. routing configuration mode
  2. BGP neighbor configuration mode
  3. global configuration mode
  4. BGP address-family configuration mode

Answer(s): B



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A remote operation center is deploying a set of I-BGP and E-BGP connections for multiple IOS-XR platforms using the same template. The I-BGP sessions exchange prefixes with no apparent issues, but the E-BGP sessions do not exchange routes. What causes this issue?

  1. The I-BGP neighbors are mistyped and HELLO packets cannot be exchanged successfully between routers.
  2. The E-BGP neighbors are not allowed to exchange Information due to the customer platform's default policy.
  3. A PASS ALL policy has not been implemented for the I-BGP neighbors.
  4. The next-hop-self command is not implemented on both E-BGP neighbors.

Answer(s): B



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Refer to the exhibit. An engineer is securing a customer's network. Which command must the engineer use to complete this configuration to prevent a DoS attack?

  1. neighbor ttl-security
  2. ebgp-multihop
  3. neighbor ebgp-multihop
  4. ttl-security

Answer(s): D



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What is the function of the FEC field within the OTN signal structure?

  1. It allows the sending devices to apply QoS within the OTN forwarding structure.
  2. It allows deep inspection of data payload fields.
  3. It allows receivers to correct errors upon data arrival
  4. It allows source nodes to discard payload errors before transmitting data on the network.

Answer(s): C



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What is the primary purpose of application hosting in a service-provider virtualization environment?

  1. to leverage artificial intelligence and other algorithms for use in network-based applications
  2. to consolidate multiple applications onto fewer physical network computer devices
  3. to provide a secure remote-access portal for service-provider customers to access network applications
  4. to provide a platform for running third-party applications directly on network devices

Answer(s): D

Explanation:

In a service-provider virtualization environment, application hosting allows third-party applications to run directly on network devices. This reduces the need for separate infrastructure, enhances operational efficiency, and supports advanced capabilities like deep packet inspection, edge computing, and specialized network services.
By hosting applications on network devices, service providers can deliver innovative services and reduce latency for applications requiring direct integration with the network.



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What is the primary purpose of routed optical networks?

  1. to provide redundancy for failed network connections by automatically switching to backup paths
  2. to convert analog signals to digital signals for transmission over fiber-optic cables
  3. to encrypt and secure data traveling across the network
  4. to simplify network management by collapsing multiple layers into a single architecture

Answer(s): D

Explanation:

The primary purpose of routed optical networks is to simplify network operations by collapsing multiple layers (e.g., IP, MPLS, and optical layers) into a single unified architecture. This reduces complexity, improves scalability, and enhances efficiency in managing and operating the network.
Key features of routed optical networks include:
Integration of routing and optical transport layers.

Simplified network management and reduced operational costs.

Enhanced performance by enabling direct communication between IP and optical layers without

intermediate equipment.



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DRAG DROP (Drag and Drop is not supported)

Drag and drop the 5G RAN architecture types from the bottom next to the corresponding topologies on the right.

Select and Place:

  1. See Explanation section for answer.

Answer(s): A

Explanation:




1. D-RAN: Backhaul

In Distributed RAN (D-RAN), the Radio Unit (RU), Distributed Unit (DU), and Centralized Unit (CU) are co- located at the cell site, and only the backhaul interface connects to the mobile core.

2. C-RAN: Front/MID/Backhaul

This is a Centralized RAN (C-RAN) with all three segments -- fronthaul (RU to DU), midhaul (DU to CU), and backhaul (CU to core) -- present. DU and CU are centralized but together.

3. C-RAN: Front/Backhaul

The RU connects to a centralized CU, skipping the DU. This represents a C-RAN design with fronthaul and backhaul only.

4. C-RAN: MID/Backhaul

RU is distributed, but DU is centralized and connects to a remote CU. This scenario omits fronthaul in favor of midhaul and backhaul.



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What is the primary purpose of Secure ZTP?

  1. to automate the secure provisioning of network devices during initial deployment
  2. to securely and seamlessly encrypt traffic across the entire network
  3. to provide real-time threat detection and mitigation for devices in the network
  4. to provide secure remote access to network devices for management and troubleshooting

Answer(s): A

Explanation:

Secure Zero-Touch Provisioning automates the secure onboarding and initial configuration of network devices without manual intervention. It ensures that devices are authenticated and provisioned with trusted software and configuration during first boot, protecting the deployment process from unauthorized access or tampering.



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