I’m here, hello. . . . . . .
Explanation:
By default, SSH opens port 22.
However, this can be arbitrarily changed. So if port 22 does not work, it is necessary to check the exact/new port number.
Answer:
Device Driver
Explanation:
All of the other options are physical and are something that you can physically touch. The device driver runs in software and allows the computer to communicate with the device that is attached.
Answer:
An Oracle sequence uses the identity column property to automatically number rows.
Explanation:
An Oracle sequence is a tool that can be used to generate a number sequence. Oracle has the capacity to help you create an auto-number field by using one of its tools called sequence.
A sequence is an object in Oracle that is used to generate a number sequence for input to a table. This is required when you need to generate primary key values by the use of identity columns.
So, Oracle sequence can automatically number rows by the use of identity columns.