It's true that a security device should be installed. The security device to be installed between a computer network and the internet is: A Firewall.
<h3>What is a firewall?</h3>
A firewall refers to a hardware or software which is like a gatekeeper that helps to protect internal networks. It monitors incoming and outgoing traffic.
Thus, we see that firewall is the security device that should be installed.
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Change the comma after “parts” to a colon
A message or insight recognized in many cultures is a universal theme.
The correct answers are options B, C and D.
Marco Polo's cultural context are represented first in the quote about the malik of Homuz who had a castle. <em>Malik </em>means <em>king </em>in Arabic, and the Kingdom of Hormuz existed in the Persian Gulf between the 10th and 17th centuries.
Secondly, the cite about ships which made voyages in twenty days also refers to the cultural framework of Polo's time.
Finally, there is a reference to Saracen people, a term used to mention Muslims in the Middle Ages.