The technologies involved in communication tend to be complex. You certainly don't need to understand them for your ICT course. However, there are aspects of digital communications that you needs to be aware of. These relate primarily to the two types of network and the ways of connecting to the internet.
Archaeans include inhabitants of some of the most extreme environments on the planet. Some live near rift vents in the deep sea at temperatures well over 100 degrees Centigrade. Others live in hot springs (such as the ones pictured above), or in extremely alkaline or acid waters.
The Kingdom Archaebacteria consists of bacteria found in harsh environments such as those that are extremely salty or hot. Bacteria in this kingdom have cell walls made without peptidoglycan.It is part of the Domain Archae.he Kingdom Archaebacteria consists of bacteria found in harsh environments such as those that are extremely salty or hot. Bacteria in this kingdom have cell walls made without peptidoglycan.