Answer:
D. 80
Explanation:
By default, the port number for a web server is 80.
Answer: the answer is A.
Explanation: hope this helps!
Finding and fixing a problem
Zworykin invented a television transmitting and receiving system employing cathode ray tubes.
Answer: d. incremental backup
Explanation:
In incremental backup it copies only the files that have changed since the last full backup. It does not backup all the files just like the full backup. it however backup those copies into the system which has changed since the last backup.
In doing so it just increases the efficiency and performance of the backup procedure. This process is basically preferred when the amount of file to be backup is huge and there is not enough time to do a full backup.
Increment backup also use less disk space.
Cloud backup uses most increment backup for its application.
