There are three situations that a context switch is necessary, as shown below.Multitasking - When the CPU needs to switch processes in and out of memory so that more than one process can run. Kernel/User Switch - When switching between user mode to kernel mode, it may be used (but it ...
What is a context switch? A context switch is a process of saving a process or thread’s state so that the CPU can execute another thread or process. Now there are many questions that come with it. It then loads the next process which has to be executed. Why you need a context ...
A switch forwards a data packet based on the physical address (MAC address). For theIPprotocol, the switch is transparent. That is, when forwarding a data packet, the switch does not and needs not know theIP addressof the source or destination machine. It only needs to know the destinatio...
A network switch is a technology that allows two or more IT devices such as computers to communicate with each other, forming a communications network. Switches enable devices on the network to share IT resources such as printers, servers, file storage, internet access, and processing. Simple ...
In this context, density refers to the number of ports an Ethernet switch allows. The more ports on a switch, the more devices that can connect to the network directly. Having multiple ports allows for simultaneous connections, which is vital for office environments. For example, a business ma...
When building a small office network, the two most essential pieces of equipment you will need are switches and routers. Though they look similar, the two devices perform different functions within a network. What is a switch? Switches facilitate the sharing of resources by connecting together ...
A standalone switch is managed and configured with a set capacity. Stackable switches can be connected to increase capacity and network availability. For configuration, troubleshooting, and management, a stack of switches can be treated as a single unit. If any part of the stack fails, transmissi...
What is a switch? In the context of networking, a switch is a device that connects devices together in a computer network, enabling them to communicate with each other by exchanging data packets. A switch operates at the data link layer of the OSI model. With a switch, it's possible for...
You need to switch among hundreds, perhaps thousands, of servers in rack cabinets. How would you even accomplish this? What if there were a device that could allow you to quickly and easily access two, three, or more computers with just a single monitor, keyboard, and mouse? There is, ...
assortment of endpoints. Ideally, a SAN switch is dedicated to storage traffic only -- whether based on Ethernet or Fibre Channel technologies -- and the switch is optimized for that specific purpose. Likewise, while SAN switches are connected in a fabric topology, LAN switches use abusorstar ...