A network administrator wants to have the same network mask…

A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices: IP phones – 22 addresses PCs – 20 addresses needed Printers – 2 addresses needed Scanners – 2 addresses needed The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks?  

A microbiologist is reading a sputum culture on the bench. T…

A microbiologist is reading a sputum culture on the bench. There is growth on the SBA and chocolate (CHOC) plates, but no growth on the MacConkey (MAC) plate. The colonies growing on the SBA have produced a wide, deep, clear zone of b-hemolysis around and under the colonies. What organism could this be?