If the packet's "Do Not Fragment" flag is set, then the packet is discarded and the sender is notified. Otherwise, the packet is fragmented into several pieces and will continue on to its final destination.

screening

packet switching can be considered an improvement over message switching.Similar to message switching,packet switching forwards data on first come first serve basis between nodes and no dedication connection is made (as it is done in circuit switching). But unlike message switching,packet switching puts an upper limit on the maximum size of the packet.If the packet size is greater than the maximum,it is segmented and then transmitted.Each segment has separate header which increases the overhead. But it reduces the average delays.Also in case of packet switching data is not stored for later transmission to a currently busy or inactive terminal.It just takes care of data transmission between nodes

no they did not

A summer packet is a packet you have to finish before the school starts