350-401 Question 79
Select 3A network engineer is tasked with deploying device virtualization technologies in a corporate environment to optimize hardware usage and improve service isolation. The engineer is considering options such as hypervisors, containers, and logical device partitioning. Which of the following technologies are examples of device virtualization?
- A
Cisco IOS XR Software Virtual Device Contexts (VDCs)
- B
Docker Containers
- C
Cisco StackWise Virtual
- D
VMware ESXi
- E
Cisco Enhanced Interior Gateway Routing Protocol (EIGRP)
Show answer and explanation
Correct answers: A, B, D
Explanation
Device virtualization technologies allow for the abstraction of hardware resources to create multiple isolated environments or virtual instances. Examples include logical device partitioning (e.g., VDCs), application-level virtualization (e.g., Docker Containers), and hypervisors (e.g., VMware ESXi). These technologies optimize hardware usage and provide service isolation. Cisco StackWise Virtual is not a virtualization technology but rather a method for switch redundancy, and EIGRP is unrelated to virtualization.
- A. Correct.
Cisco IOS XR Software Virtual Device Contexts (VDCs) allow for logical partitioning of a physical device into multiple virtual devices, making it an example of device virtualization.
- B. Correct.
Docker Containers are a form of application-level virtualization, enabling multiple isolated instances to run on the same host, which qualifies as device virtualization.
- C. Incorrect.
Cisco StackWise Virtual provides high availability and combines physical switches into a single logical switch. While it improves redundancy, it is not a device virtualization technology.
- D. Correct.
VMware ESXi is a hypervisor that enables hardware virtualization by running multiple virtual machines on a single physical server, making it a valid example of device virtualization.
- E. Incorrect.
Cisco Enhanced Interior Gateway Routing Protocol (EIGRP) is a routing protocol and is unrelated to device virtualization technologies.