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What are the three most important network- layer functions in a virtual circuit network?
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What are connections between network nodes that although based on potentially disparate physical links?
Virtual Circuit
What does network virtualization include?
Network Virtualization (NV) refers to abstracting network resources that were traditionally delivered in hardware to software. NV can combine multiple physical networks to one virtual, software-based network, or it can divide one physical network into separate, independent virtual networks.
What is created between two DTEs in a frame relay network?
Virtual Circuit is Created. Each circuit is known by its DLCI. i.e. Data Link Connection Identifier.
Provides a moible user with a secure connection to the company network server?
VPN (virtual private network)
How do you represent a C plus plus non-pure virtual function in UML?
All virtual functions (including pure-virtual functions) are represented in italics. All non-virtual functions are represented normally. There is no differentiation between pure and non-pure virtual functions, however some people append "=0" to distinguish the pure-virtual functions.
What type of message does a network send in response to a setup message when a user connects via an isdn's virtual circuit service?
A connect message
What the different between PVC and SVC?
Virtual circuits are usually permanent virtual circuits (PVCs), which means that they are defined for frequent and consistent use by the network. They do not change unless the network manager changes the network. Some common carriers also permit the use of switched virtual circuits (SVCs) although this is not common. Changing PVCs is done using software, but common carriers usually charge each time a PVC is established or removed. The difference between a PVC-Permanent Virtual Circuit and SVC-Switched Virtual Circuit is that an SVC must be reestablished each time data is to be sent. After that the SVC disappears.
What software is necessary to make a virtual network?
A virtual network requires virtual network software in order to run. An example of such software is VirtualBox, although there are many suitable alternatives as well.
What is the Difference between datagram network and virtual circuit network?
Not a whole answer but a small try :)In a Datagram Network, there's no "network-layer-connection" between the two hosts. So Theres no garuanteed bandwith and the packets may take different paths.In a Virutal Circuit network, its oppositly and a connection is established.------------------------------------------------------------------------------------------------------------ •There are a number of important differences between virtual circuit and datagram networks. •The choice strongly impacts complexity of the different types of node.•Use of datagrams between intermediate nodes allows relatively simple protocols at this level,-but at the expense of making the end (user) nodes more complex when end-to-end virtual circuit service is desired.•The Internet transmits datagrams between intermediate nodes using IP. •Most Internet users need additional functions such as end-to-end error and sequence control to give a reliable service (equivalent to that provided by virtual circuits).•This reliablility may be provided by-the Transmission Control Protocol (TCP) which is used end-to-end across the Internet,-or by applications such as the trivial file transfer protocol (tftp) running on top of the User Datagram Protocol (UDP).
What types of network connections does Hyper-V allow?
External virtual networks.Use this type when you want to provide virtual machines with access to a physical network to communicate with externally located servers and clients. This type of virtual network also allows virtual machines on the same virtualizationserver to communicate with each other. This type of network may also be available for use by the management operating system, depending on how you configure the networking. (The management operating system runs the Hyper-Vrole.) For more information, see "A closer look at external virtual networks" later in this topic.NoteHyper-Vdoes not support wireless networks. An external virtual network provides access to a physical network through a wired physical network adapter.Internal virtual networks.Use this type when you want to allow communication between virtual machines on the same virtualizationserver and between virtual machines and the management operating system. This type of virtual network is commonly used to build a test environment in which you need to connect to the virtual machines from the management operating system. An internal virtual network is not bound to a physical network adapter. As a result, an internal virtual network is isolated from all external network traffic.Private virtual networks. Use this type when you want to allow communication only between virtual machines on the same virtualizationserver. A private virtual network is not bound to a physical network adapter. A private virtual network is isolated from all external network traffic on the virtualizationserver, as well any network traffic between the management operating system and the external network. This type of network is useful when you need to create an isolated networking environment, such as an isolated test domain.
How do you access a virtual private network?
A Virtual Private Network is secure network and isonly accessible by authentication, if we consider a paid vpn software it requires a login to access VPN servers, the main reason of Virtual Private Network lies in this privacy.. Read about it here: boxpn.com/faq/general There are answers to all the important questions. If that - is not advertising Boxpn, although I use them, but just pretty handy manual with explanations of what and how to do it.
What is virtual function table?
A virtual function table is a table of pointers to functions.
