Answer: Canned salmon has quite a long shelf life for canned food products. If you have already purchased a can of salmon check the label on the can to determine the actual manufacturers recommended shelf life. A good rule of thumb is that generally a canned salmon product has a shelf life of about six years. This could be increased if the pantry has low humidity and is quite dry and the can has not been compromised, rusted or otherwise damaged.
SSL (Secure Sockets Layer) is the standard security technology for establishing an encrypted link between a web server and a browser. This link ensures that all data passed between the web server and browsers remain private and integral.
A URL is a specific type of Uniform Resource Identifier (URI), although many people use the two terms interchangeably. A URL implies the means to access an indicated resource, which is not true of every URI. URLs occur most commonly to reference web pages (http), but are also used for file transfer (ftp), email (mailto), database access (JDBC), and many other applications.