What type of switching has variable latency

IS-IS C. NLSP D. OSPF E. RIP version 2. You have powered on a new router and you want to create an initial configuration. Which mode should you use? What does the following series of commands accomplish?

It isolates networks It loads igrp for networks and It is calculated as:. Transmission delay refers to the time it takes to transmit a data packet onto the outgoing link. The delay is determined by the size of the packet and the capacity of the outgoing link. If a packet consists of L L L bits and the link has a capacity of B B B bits per second, then the transmission delay is equal to:. Queuing delay refers to the time that a packet waits to be processed in the buffer of a switch.

Processing delay is the time taken by a switch to process the packet header. The delay depends on the processing speed of the switch. View all Courses. Packet switching works well for data communication, transmitting digital data directly to its destination. Data transmissions are generally high quality in a packet switched network because such a network employs error detection and checks data distribution with the goal of error free transmissions.

The packet switching process is reliable in that the destination can identify any missing packets. However, circuit switched networks deliver packets in order along the same route and are therefore less likely to experience missing packets in the first place.

Packet switching protocols are complex, so switching nodes demand more processing power and a large amount of RAM. File size. Packet switching is more useful for small messages, while circuit switching is best for larger transmissions.

This is due to multiple rerouting delays, the risk of multiple lost packets, and other issues. Cell switching, or cell relay , uses a circuit switching network and has features of circuit switching.

The primary difference is that in packet switching technology, the packets are of variable lengths, but in cell switching, packets are a fixed length of 53 bytes with a 5 byte header. Cell switching achieves high performance using hardware switches. There is no need to reserve resources in computer networks for a connection since the technology uses virtual rather than physical circuits.

And after establishing a virtual circuit, you can achieve higher network throughputs thanks to minimized switching time. A packet switched network follows networking protocols that divide messages into packets before sending them. Compare this to standard telephone network landline service, which is based on circuit switching technology.

Circuit switching networks are ideal for most real-time data, transmission, while packet switching networks are both effective and more efficient for data that can tolerate some transmission delays, such as site data and e-mail messages.

Blog Contact Support. Packet-switching delay refers to the latency accrued when switches and routers forward data. The latency depends on the speed of the internal circuitry and CPU, and the switching architecture of the internetworking device. Latency also depends on the type of RAM that the device uses. Low-end internetworking devices often use DRAM to keep the cost low. Packet-switching delay can be quite small on high-end switches, in the 5- to microsecond range for byte Ethernet frames.

Routers tend to introduce more latency than switches. The amount of latency that a router causes for packet switching depends on many variables including the router architecture, configuration, and software features that optimize the forwarding of packets. Despite marketing claims by switch salespeople, you should not assume that a router has higher latency than a switch. A high-end router with a fast CPU, SRAM, optimized software, and a highly evolved switching fabric can outperform many low-end or medium-end switches.

Of course, a router has a more complicated job than a switch.