Free Cisco 350-501 Practice Exam with Questions & Answers | Set: 9

https://www.cisco.com/c/en/us/solutions/service-provider/mobile-internet/5g-transport/converged-5g-xhaul-transport.html#

In the context of regular expressions, the caret (^) is used to indicate the start of a string. This is a fundamental concept in pattern matching using regular expressions, where ^ matches the position at the beginning of the string.

The REST API script in the exhibit is used to configure a VRF (Virtual Routing and Forwarding) instance. In the script,  defines a tenant named “customer”, and  creates a VRF named “customervrf” within that tenant. A VRF allows multiple instances of a routing table to co-exist within the same router at the same time, enabling network paths to be segmented without requiring multiple routers. References: Implementing and Operating Cisco Service Provider Network Core Technologies source documents or study guide.

The script is designed to leverage REST API calls for network configuration tasks. It uses the requests library in Python to send a PATCH request to the device with IP address 172.168.211.65. The script includes RFC 2617-based authentication, which is used for HTTP, indicating that it’s not using SSH for login. The payload of the REST API call specifies the configuration for the interface GigabitEthernet0/1 with the IP address 10.1.131.112/30. Therefore, the script is performing option B, configuring the interface via REST API calls.

The QoS-group keyword on Cisco IOS XR is used for marking packets on the ingress of the device. This allows for internal handling and is not transmitted across the network. It can be used in fabric QoS policy as a match criteria to apply specific policies based on the QoS group marking.

The core component of MDT that describes the data streamed to a collector is the encoder. In the context of Microsoft Deployment Toolkit (MDT), the encoder is not explicitly mentioned; however, the concept aligns with the process of creating and capturing images of operating systems, which involves encoding or compiling the necessary data into a deployable image.

When implementing LDP NSF (Nonstop Forwarding) on the network, an engineer must perform the following tasks:

Implement direct connections for LDP peers: This ensures that LDP sessions can be reestablished quickly after a switchover.

Enable NSF for the link-state routing protocol in use on the network: This allows the routing protocol to maintain its state during a switchover, ensuring seamless operation.

For example, if OSPF is the link-state routing protocol, enabling NSF for OSPF ensures that OSPF adjacencies are maintained during a switchover

Router 4 must be in the same area as Router 1, so it should have the same area address which is “49.0111”. The system ID can be different to uniquely identify the router in that area, but since there is no option with a different system ID and the same area address, option B is correct as it has both the same area address and system ID as Router 1. References := Cisco

The configuration in Option A is correct for enabling dial-out telemetry streams using gRPC on devices with TLS disabled.

It uses model-driven telemetry (MDT), which is a new method of monitoring network devices. Unlike traditional methods that pull data from the device, MDT pushes data from the device to the collector.

In this configuration:

Telemetry is model-driven.

It specifies a destination group with an IP address and port number where the telemetry data will be sent.

The encoding is self-describing-gpb (Google Protocol Buffers).

The protocol used is TCP.

This setup ensures that telemetry data is sent to the specified collector without requiring TLS encryption.

MPLS TE FRR (Fast ReRoute) provides backup protection by creating a bypass LSP for each protected LSP at each point of local repair. This method allows for rapid switching to the backup path in case of a failure, minimizing traffic loss and disruption.

References :=

Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) course materials.

Ansible is widely recognized as a robust network automation tool that facilitates provisioning, configuration, and management of network devices. It uses simple, human-readable YAML syntax for its playbooks, making it easy to define tasks and orchestrate workflows for automated network operations1.