Answer:
1. Clients and servers—how services such as e-mail and web pages connect using networks.
2. IP addresses—how devices on a network can be found.
3. Network hubs, switches and cables—the hardware building blocks of any network.
4. Routers and firewalls—how to organize and control the flow of traffic on a network.
Answer:
The three fundamental principles underlying the use of mnemonics are imagination, association, and location.
Explanation:
Answer: Let you organize and summarize your data.
Explanation: Data grouping is referred as the making a collection or cluster of data in a report .The group is made for the summarization of the information and makes easily understandable according to the subject or field due to the proper organization.
Other given options are incorrect because it does not provide the total of the report content,attractive form of the data or editing function in report.Thus the correct option is summarizing and organizing the data.
Answer:
UPDATE acctmanager WHERE amid = 'J500';
Explanation:
The statement written above is not valid SQL statement because there is no SET after UPDATE. Update is always used with SET.If you are updating something then you need to specify the value with which that value should be replaced.
UPDATE acctmanager SET amname = UPPER(amname);
This statement does not contains WHERE clause but it will run all the values of amname column will get updated in the table acctmanager.
