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What is a benefit of organizing into modules?
Organizing code into modules helps manage large and complex systems by breaking them down into smaller, more manageable pieces. Each module can be developed, tested, and maintained independently, which simplifies the overall development and maintenance process.
Which implementation creates a group of devices on one or more LANs that are configured to communicate as if they were attached to the same wire?
A VLAN (Virtual Local Area Network) allows devices on one or more LANs to be grouped together as if they were on the same physical network, even if they are not.
Logical Segmentation: VLANs provide logical segmentation of networks, enabling devices to communicate as if they are on the same physical network.
Isolation and Flexibility: They offer isolation and flexibility in network design, improving security and reducing broadcast domains.
Option B is correct as VLANs create logical groupings of devices that communicate as if they are on the same physical LAN.
Cisco DevNet Documentation: VLAN Configuration and Benefits
Which application should be used to externally access all applications deployed in the same host machine with a single public IP address and port, when each application listens on different local ports?
A reverse proxy can be used to route external requests to different applications on the same host machine using a single public IP address and port. It forwards the requests to the appropriate backend servers based on the request URL or other routing rules.
Single Entry Point: A reverse proxy serves as a single entry point to multiple applications, making it ideal for managing traffic to multiple services hosted on the same machine.
Routing Requests: It can route requests to different internal ports based on the requested URL or other criteria.
Option A is the correct choice as a reverse proxy handles external access to multiple applications on the same host.
Cisco DevNet Documentation: Reverse Proxy Use Cases
What is the purpose of grouping devices in a VLAN?
The primary purpose of grouping devices in a VLAN (Virtual Local Area Network) is to segment a network such that devices within the same VLAN can communicate as if they are on the same physical network, regardless of their actual physical location. This allows for logical grouping of devices, providing improved network management and security.
What operation is performed with YANG model-driven programmability in NX-OS?
YANG model-driven programmability allows for the configuration of devices using data models. In NX-OS, this includes both native and OpenConfig-based models.
YANG Models: These are used to model configuration and state data for network devices. Native models are specific to the vendor, while OpenConfig models are vendor-neutral.
Configuration Management: YANG models facilitate consistent and programmable configuration of network devices, which can be done through APIs like NETCONF or RESTCONF.
