Convert the following infix expressions into polish notation
i. 1 + ( 2 * ( 3 + 4 ) )
ii. 1 + ( ( 2 * 3 ) + ( 4 * 5 ) )

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.

Rafael needs to add a title row to a table that he has inserted in word. what should he do? use the alignment options. use the merge and center option for all the cells in the top row. use the merge and center option on the first two cells in the top row. none of the above

Why should you evaluate trends when thinking about a career path?