Networking in plain English. Cisco IP Classless Command. When Cisco routers have to forward packets, they will check their routing table and they use longest prefix matching to find the best match. If you donât have a best match then the router will use a default route (if you have one). Otherwise, the packet will be dropped.
Franklinâs images allowed James Watson and Francis Crick to create their famous two-strand, or double-helix, model. At Kingâs College London, Rosalind Franklin obtained images of DNA using X-ray crystallography, an idea first broached by Maurice Wilkins.
James Watson (left) and Francis Crick discovered the structure of DNA, but only by drawing on the work of many scientists who came before them, including Rosalind Franklin. Enlarge Photo credit: Corbis.