Cisco Updated 200-901 Exam Questions and Answers by elysia

The YANG module shown in the exhibit is for interface management. It augments the ietf-interfaces module and defines parameters specific to Ethernet interfaces, such as auto-negotiation, duplex mode, and speed. This module is designed to manage the configuration and operational state of Ethernet interfaces. References for YANG modules can be found in the IETF YANG Data Model for Interface Management.

JSON objects are indeed collections of key-value pairs, where each key is a string, and the value can be a string, number, boolean, array, or another object. JSON is often used for data interchange due to its lightweight and readable format. Reference: JSON Introduction.

The syntax of XML includes tags, elements, and attributes. XML uses a hierarchical structure with opening and closing tags to define elements, and attributes provide additional information about elements. XML is widely used for data representation and transport. Reference: XML Basics.

JSON arrays, in contrast, are ordered collections of values (not key-value pairs), and XML objects are more complex structures with elements and attributes rather than simple key-value pairs.

Virtual machines (VMs) run directly on a hypervisor, which abstracts and manages the underlying hardware resources.

Hypervisor: A hypervisor, also known as a Virtual Machine Monitor (VMM), allows multiple VMs to run on a single physical machine by providing an abstraction layer between the VMs and the hardware.

VMs: Each VM operates as a separate entity with its own operating system and applications, isolated from other VMs.

When consuming a RESTful API that returns large amounts of data, pagination is commonly used to divide the data into manageable chunks. Pagination helps reduce the load on the server and the client by providing only a subset of the total data in each response. The client can request the next set of data using parameters such as page or limit.