NEED ANSWER ASAP. I’ll mark brainliest if correct Select the correct answer.

Which concept in 00P explains the relationship between the classes nation and president, where the class nation has-a (an) object of class president?

-aggregation
-association
-abstraction
-composition
-inheritance

Cloud computing service providers manage different computing resources based on the services they offer. which resources do iaas and paas providers not manage? iaas providers do not manage the for the client, whereas paas providers usually do not manage the for their clients. iaas- storage server operating system network paas- applications interafce storage vertualiation

Which option correctly describes a dbms application? a. software used to manage databases b. software used to organize files and folders c. software used to develop specialized images d. software used to create effective presentations

Explain how email technologies enable the exchange of messages between users. find out the typical parts of an email address and explain each part.