CH. 9 Section 2

What are the 3 types of network virtualization providers

-VMware -Microsoft -Citrix

benefits of virtual networks

-saves money by using less storage space and use of scalability

Virtual switch (vSwitch)

Software that facilitates the communication between virtual machines by checking data packets before moving them to a destination. A vSwitch may be a part of software installed in the virtual machine or it may be part of the server firmware.

Virtual firewall appliance (VFA)

Software that functions as a network firewall device that provides the usual packet filtering and monitoring. The VF can run as a traditional software firewall on a virtual machine.

Virtual firewall appliance (vFA)

Software that functions as a network firewall device. A virtual firewall appliance provides packet filtering and monitoring functions

Virtual router (vRouter)

Software that replicates the functionality of a physical router.

Virtual machine monitor (VMM)/hypervisor

Software, firmware, or hardware that creates and runs virtual machines.

Virtual machine monitor/hypervisor (VMM/hypervisor)

Software, firmware, or hardware that creates and runs virtual machines. A computer on which a hypervisor runs to provide one or more virtual machines is called a host machine.

Virtual Area Network (VAN)

This is a virtual LAN running on top of a physical LAN. This configuration enables guest virtual machines on separate physical hosts to communicate.

Citrix virtualization solution is called

XenServer, also referred to as Citrix Hypervisor Support the widest range of graphics applications Support Intel GVT-g GPU virtualization, a CPU-embedded GPU requiring no additional hardware.

External network virtualization combines

one or more LANs into virtual networks to improve a large network's efficiency. Using this technology, systems physically attached to the same local network can be configured to be separate virtual networks. Systems from separate LANs can also be combined into a single VLAN that spans segments of a large network.

The hypervisor provides

the guest operating systems with a virtual operating platform and manages the execution of the guest operating systems

Virtual Machine (VM)

virtual computers that function like a physical computer. Virtual servers are virtual machines capable of providing services such as databases, email, domains, and applications.

The traffic between virtual machines can be routed using ________ ___________alongside virtual routers and____________ __________ for network segmentation and data isolation.

virtual switches and virtual firewalls

Virtual Private Network (VPN)

A VPN is usually used as a secure tunnel over another network, connecting multiple remote end-points, such as routers.

Virtual network

A computer network consisting of virtual and physical devices.

Virtual private network VPN

A secure tunnel to another network that connects multiple remote end-points.

Virtual router (vRouter)

A software function that replicates the functionality of a physical router. Because virtual routing liberates the IP routing function from specific hardware, you can more freely move routing functions around a network.

Virtual Area Network (VAN)

A virtual LAN running on top of a physical LAN.

Virtual machine (VM)

A virtual computer that functions like a physical computer.

You are an application developer. You use a hypervisor with multiple virtual machines installed to test your applications on various operating systems' versions and editions. Currently, all of your virtual machines used for testing are connected to the production network through the hypervisor's network interface. However, you are concerned that the latest application you are working on could adversely impact other network hosts if errors exist in the code. To prevent issues, you decide to isolate the virtual machines from the production network. However, they still need to be able to communicate directly with each other. What should you do? 2

Create a new virtual switch configured for host-only (internal) networking Connect the virtual network interfaces in the virtual machines to the virtual switch

Microsoft's network Virtualization provider

Hyper-V Network Virtualization that provides virtual networks to virtual machines. This is similar to how server virtualization (hypervisor) provides virtual machines to the operating system. Hyper-V Network Virtualization has high scalability, with capacity for over 1,000 virtual machines per host. Microsoft Azure that provides network virtualization in the cloud.

Network virtualization should allow a virtual network, including all of its ____________, __________ , _____________and so on, to appear to be running directly on the physical network. This allows the servers connected to that virtual network to continue to operate as if they were running directly on the physical network, even though multiple virtual networks share the physical network.

IP addresses, routes, network appliances, etc

Virtual Local Area Network (VLAN)

Several physical LANs can function as a single logical LAN, or the partitioned network can be on a single router.

Virtual switch (vSwitch)

Software that facilitates the communication between virtual machines by checking data packets before moving them to a destination.

VAN

Virtual Area Network

T or F Multiple virtual networks can be associated with a single physical network adapter.

True

T or F When a virtual network is created, its configuration is dependent on the configuration and physical hardware (such as the type and number of network adapters) of the host operating system.

True

What is a virtual LAN that runs on top of a physical LAN called?

VAN- virtual area network

Which of the following is an example of protocol-based network virtualization?

VLANS and VPNs

VMware

VMware introduced the first x86 server virtualization products in 2001, making it a virtualization pioneer. VMware desktop software runs on Microsoft Windows, Linux, and macOS, while its enterprise software hypervisor for servers

Which of the following virtual devices provides packet filtering and monitoring?

VPA - virtual firewall appliance

Which of the following is used as a secure tunnel to connect two networks?

VPN - virtual area network

A multipoint VPN is a

VPN connecting more than two end-points

VPN

Virtual Private Network

Which of the following devices facilitates communication between different virtual machines by checking data packets before moving them to a destination?

Virtual switch

The physical networking devices are responsible for forwarding of packets, while the virtual network (software) provides

an intelligent abstraction that makes it easy to deploy and manage network services and underlying network resources.

Each virtual machine is called a

guest machine.

Internal network virtualization

configures a single system with software containers, or pseudo-interfaces, to emulate a physical network with software. This can improve a single system's efficiency by isolating applications to separate containers or pseudo-interfaces.

VMware ESXi Server

is a bare-metal hypervisor that runs directly on server hardware without requiring an additional underlying operating system. ESXi is primarily used for data center virtualization

What is a virtual network

made up of one or more virtual machines configured to access local or external network resources.