A Supermarket manager hired one packager who can pack 15 boxes every two minutes. Ater some time the manager noticed that packaging is too much work to be done by one person, so they hired another packager who can pack 15 boxes every three minutes. How many minutes will it take these two packagers, working together, to pack 500 boxes? 32 40

The open systems interconnection (osi) reference model: defines standards for many aspects of computing and communications within a network. is a generic description for how computers use multiple layers of protocol rules to communicate across a network. defines standards for wireless local area network (wlan) communication protocols. details the advantages and disadvantages of various basic network cabling options.