Quotation marks are put around a text string within a query criteria so that the results of the specifications are limited. We should note that the criteria is defined as the conditions which the users can set inside the query in order for them to get the records that they want to return.
The network layer is responsible for logical connection setup, data forwarding, routing & delivery. This therefore means that the network (third) layer of the OSI model is responsible for allowing one computer to share information with other computers.