The only way to perform the system update if to go from computer to computer installing each update on the computers one by one. Once though the update is started it can be left to update without any further operation.
The iMac comes with a built in webcam.
imac always slow the network when connected with windows linked computer in the network
Apple
Yes, Apple has a line of desktop computers that were introduced to the public in the year of 1998. The Imac is Apple's line of consumer desktops computers.
The best you can buy.
1993
It was 1996
Apple ventured into the creations of computers before Ipod's, so i would say that the Imac came first.
Yes, but you do not need it if the Mac's are on the same network.
The arrangement of computers in a network is known as Network topology.
A group of computers might form a network, but this is not necessarily the case. There is no commonly used collective noun for computers.
Hiring somebody to do computer network installations is the same as hiring anybody else. You should advertise interviews, and find somebody capable to do the job.