Virtual Networking and Network Function Virtualization
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Questions and Answers

What is the function of network function virtualization (NFV) as discussed in the text?

  • Moving network devices and infrastructure directly into the hypervisor (correct)
  • Creating physical server farms for better network management
  • Connecting virtual servers to the physical network interfaces
  • Enhancing the physical network devices and infrastructure

What is the primary role of a hypervisor, such as Virtual Machine Manager (VMM), in a virtual server environment?

  • Managing all operating systems, virtual systems, and virtual network connections (correct)
  • Connecting virtual machines within a hypervisor using vSwitches
  • Supporting features like NetFlow, LACP, and port mirroring
  • Providing uplinks from the virtual world to the physical world using physical network interfaces

What is the purpose of vSwitches in a virtual server environment?

  • Creating physical server farms for better network management
  • Managing access to CPU, memory, and network for all virtual systems
  • Connecting virtual machines within a hypervisor (correct)
  • Moving network devices and infrastructure into the hypervisor

What do virtual switches, or vSwitches, support in a virtual server environment?

<p>NetFlow, LACP, and port mirroring (B)</p> Signup and view all the answers

What is the role of virtual network interface cards (vNICs) in a virtual server environment?

<p>Connecting virtual servers to the rest of the network (A)</p> Signup and view all the answers

How are virtual network connections configured and managed in a virtual server environment?

<p>Through the hypervisor (A)</p> Signup and view all the answers

What provides uplinks from the virtual world to the physical world in a virtual server environment?

<p>Physical network interfaces (B)</p> Signup and view all the answers

What is the primary advantage of using virtual servers over physical server farms?

<p>Reduced need for individual physical servers (C)</p> Signup and view all the answers

Which technology moves network devices and infrastructure directly into the hypervisor in a virtual server environment?

<p>Network Function Virtualization (NFV) (D)</p> Signup and view all the answers

What is the main role of vSwitches in a virtual server environment?

<p>Connecting virtual servers to the physical network (B)</p> Signup and view all the answers

Which feature of vSwitches enables the combining of multiple network connections into a single aggregated link?

<p>Link Aggregation Control Protocol (LACP) (B)</p> Signup and view all the answers

What technology connects virtual servers to the rest of the network in a virtual server environment?

<p>Physical network interfaces (D)</p> Signup and view all the answers

In a virtual server environment, what does the hypervisor manage access to for all virtual systems?

<p>CPU, memory, and network (A)</p> Signup and view all the answers

What is the function of a hypervisor in a virtual server environment?

<p>Managing access to CPU, memory, and network for all virtual systems (D)</p> Signup and view all the answers

What is the primary advantage of using virtual servers over physical server farms?

<p>Ability to easily deploy and manage virtual network devices (C)</p> Signup and view all the answers

How do virtual switches, or vSwitches, support virtual machines within a hypervisor?

<p>By enabling the combining of multiple network connections into a single aggregated link (B)</p> Signup and view all the answers

What technology moves network devices and infrastructure directly into the hypervisor in a virtual server environment?

<p>Network function virtualization (NFV) (D)</p> Signup and view all the answers

What is the role of virtual network interface cards (vNICs) in a virtual server environment?

<p>Connecting virtual servers to physical network interfaces (B)</p> Signup and view all the answers

What do vSwitches primarily enable within a hypervisor in a virtual server environment?

<p>Combining multiple network connections into a single aggregated link (D)</p> Signup and view all the answers

Study Notes

  • Companies have shifted from physical server farms to virtual servers in recent years.
  • Instead of needing individual physical servers, virtual servers can be created within a single physical device.
  • With network function virtualization (NFV), network devices and infrastructure are moved directly into the hypervisor.
  • Network switching, routing, VLANs, firewalls, and other network functions are contained within the virtual system.
  • Virtual network devices, such as switches and routers, can be easily deployed and managed within the hypervisor.
  • A hypervisor, such as Virtual Machine Manager (VMM), manages all operating systems, virtual systems, and virtual network connections.
  • The hypervisor manages access to CPU, memory, and network for all virtual systems.
  • Virtual switches, or vSwitches, are used to connect virtual machines within a hypervisor.
  • vSwitches support features like NetFlow, Link Aggregation Control Protocol (LACP), and port mirroring.
  • Virtual network interface cards, or vNICs, connect virtual servers to the rest of the network.
  • Virtual network connections are configured and managed through the hypervisor.
  • Uplinks from the virtual world to the physical world are provided by physical network interfaces.

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Test your knowledge of virtual servers, network function virtualization (NFV), hypervisors, vSwitches, and virtual network connections.

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