Answer:- Major property of a good hash code is that objects which are equal should return the same hash code .
Explanation: Hash codes is a numeric value which is used for identify a object while a equality testing .Hash code can occupy the value of any length and then returns a fixed length value. The value of hash codes are variable.
If two objects are equal then by the method of equal(object) if the hashcode() function is called on both the objects , they produce the same value.
Answer:
A communication barrier is anything that prevents us from receiving and understanding the messages others use to convey their information, ideas and thoughts.They can interfere with or block the message you are trying to send.
A fuse protects computer system from voltage fluctuations
Answer:
Hide command suppresses the visibility of a particular row or column in a worksheet
Explanation:
Hide command is used to hide the row or column in an excel worksheet. To suppress the visibility of a particular row or column in a worksheet, you have to select that particular row or column and then right-click on column or row header. A popup screen will appear as like when you refresh the computer. Then on this screen, at the bottom, you will find the hide command, click the hide command. And, as you click the hide command that particular row or column will become invisible. if you want to show it again, click the Unhide command. Therefore, hide command suppresses the visibility of a particular row or column.
Why other options are not correct
Autofit
Autofit command is used when you want that a particular cell of row or column to automatically adjust / or accommodate the content. Autofit command does not affect the visibility of a row or column.
Insert
Insert command is used to insert contents in a particular worksheet. Insert command is based on groups of various commands such as inserting tables, charts, graphs, text, symbols, add-ins, sparklines, and links.
Replace
Replace command is used in excel to replace the text with some other text. If you want to replace some text with some other text, then you have to use the replace command.
