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.
Watson and Crick discover chemical structure of DNA. On this day in 1953, Cambridge University scientists James D. Watson and Francis H.C. Crick announce that they have determined the double-helix structure of DNA, the molecule containing human genes.