Cisco 350-401 Practice Exam Questions & Answers

To parse a JSON response and extract a specific timestamp value in Python:

• Import json module: Required to parse JSON responses
• json.loads() or response.json(): Converts JSON string to Python dictionary
• Dictionary access: Uses bracket notation or dot notation to navigate nested JSON structures
• Print statement: Outputs the extracted value

The correct statement would typically follow this pattern:

import json
data = json.loads(response)  # or response = requests.get(...).json()
print(data['key']['nested_key']['timestamp'])

Without seeing the specific JSON exhibit structure, the answer would access the timestamp field through the appropriate nested dictionary keys. For example, if the JSON has a structure like {'data': {'timestamp': '10:42:36.111 UTC Mon Jan 1 2024'}}, the statement would be: print(data['data']['timestamp'])

PIM Dense Mode functions in two primary ways:

• Flood-based forwarding: It floods multicast traffic to all interfaces in the network domain, then uses prune messages to remove branches that don't have interested receivers (flood-and-prune mechanism)
• Source-based tree building: PIM Dense Mode builds source-rooted trees where the tree is built from the multicast source toward receivers, with the reverse path forwarding (RPF) concept at its core

These characteristics make Dense Mode suitable for networks with dense multicast group membership and high-bandwidth multicast sources.

The LISP network architecture and protocol use two distinct namespaces: (1) the Identity namespace, which uses Endpoint Identifiers (EIDs) to identify devices and services, and (2) the Locator namespace, which uses Routing Locators (RLOCs) to identify where packets are sent in the network. This separation of identity from location is the core principle of LISP.

Without access to the specific exhibit referenced, common determinations from JSON API output include:

• API Response Status: Whether the request was successful (HTTP status codes like 200, 404, 500)
• Data Structure: The format and hierarchy of returned data
• Field Presence: Which data fields are populated versus null/empty
• Timestamp Information: When the data was generated or last updated
• Pagination Details: Whether more results are available
• Error Messages: Any errors or warnings in the response
• API Version: The version of the API being used

To provide a specific answer, the exhibit would need to be analyzed to determine what specific conclusion or determination can be made from its output. Common determinations involve validating successful API calls, identifying returned data fields, or confirming the status of network operations.

To terminate idle-exec sessions in 600 seconds, the configuration command exec-timeout 600 (or exec-timeout 10 0 for 10 minutes) must be applied to the relevant line (console, vty, etc.). This command sets the idle session timeout in minutes and seconds, automatically disconnecting sessions that exceed the threshold.

The correct answer is C. A point-to-point Layer 3 underlay network with jumbo frames enabled.

In Cisco SD-Access, the fabric is built on top of an underlay network. Cisco documentation states that the SD-Access underlay uses a structured Layer 3 foundation and a Layer 3 routed access design, where the network elements establish IP connectivity through routing rather than relying on Layer 2 adjacency. Cisco Catalyst Center LAN automation documentation also describes the underlay links as point-to-point Layer 3 routed connections.

This makes Option C the best answer because it matches the recommended SD-Access design approach:

Point-to-point Layer 3 links in the underlay

Routed access instead of Layer 2 campus meshing

Jumbo frames enabled to accommodate encapsulation overhead commonly associated with fabric technologies such as VXLAN in software-defined fabrics, which is a standard design consideration in Cisco fabric deployments.

Why the other options are incorrect:

A . A fully meshed Layer 2 topology

This is not the SD-Access design model. Cisco SD-Access is not based on a campus-wide Layer 2 mesh; instead, it uses a routed Layer 3 underlay.

B . A fully meshed Layer 3 topology

SD-Access does require Layer 3 underlay connectivity, but not a fully meshed Layer 3 topology. Cisco recommends a structured routed access design, not an every-device-to-every-device full mesh.

D . A point-to-point Layer 2 network with LACP between devices for redundancy

This contradicts the SD-Access underlay principle. The underlay should be Layer 3 point-to-point, not Layer 2 point-to-point.

ENCOR exam point:

For Cisco SD-Access, remember this core design rule:

Underlay = routed, point-to-point, Layer 3 foundation

Overlay = virtualized fabric services on top of that underlay