Answer:
Data hierarchy is basically define to the data which is organized in the systematic manner. The main concept of the data hierarchy is to check the basic structure of the data. It basically involve the fields records and files for the data organization.
The following is the list of the computer data hierarchy from nit to address are:
1) Bit: It is the smallest unit of the data.
2) Field: The collection of all the characters in the data is known as field.
3) Record: The collection of the different fields is known as records.
4) File: The collection of various types of records in the database is known as file.
Answer:
beacon frame
Explanation:
Beacon frame is a management frame In computer networks, known to be in IEEE 802.11 based WLANs. These frames are transmitted periodically and they contain all the information a station will require before it can rightly transmit a frame.
When it comes to announcing the presence of devices in a wireless computer network (WLAN), Beacon frames are used, and they can also be used in the synchronization of the devices and services
Answer: yes because it helps
Explanation: it shows everything
Answer:
View Base tables: Virtual table based on a SELECT query
CREATE VIEW statement: Data definition command that stores the query specification in the data dictionary
DROP VIEW statement: Data definition command that removes the query specification in the data dictionary
Explanation:
Views are virtual tables, which can be created by select queries using the real database tables.
Creating and dropping views can be done by the CREATE VIEW and DROP VIEW statements.
<u>CREATE VIEW syntax:</u>
CREATE VIEW view_name AS
SELECT column1, column2, ...
FROM table_name
WHERE condition;
<u>DROP VIEW syntax:</u>
DROP VIEW view_name;
Answer:
The answer is "Option D".
Explanation:
Windows Utility services are included with the OS, which provides you a better control of the machine. and other tools can be useful for you, like anti-virus programs, backup software, disc managers and memory testers, to use this utility properly user must the command prompt to work, and the wrong option can be described as follows:
- In option A, GUI stands for Graphical user interface, that provides ease of use computer.
-
In option B, These utilities are available for every user so, there is no need to signed into standard user, that's why it is wrong.
- In option C, It is wrong because this utility is available on every window version.
