You Are Configuring the Host Firewall on a Linux System

question 17

Multiple Choice

You are configuring the host firewall on a Linux system and want to make sure that the packets sent by the ping program are not processed by the system. Which command should you use?

• A) netfilter -A INPUT -p icmp -j DROP
• B) iptables -A INPUT --dport icmp -j DROP
• C) netfilter -A INPUT --dport icmp -j DROP
• D) iptables -A INPUT -p icmp -j DROP

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Definitions:

Diminishing Marginal Utility

The principle that as a person increases consumption of a product, there is a decline in the marginal utility that person derives from consuming each additional unit of that product.

Income Effect

The change in an individual's or economy's income and how that change will affect the quantity demanded of a good or service.

Substitution Effect

The change in demand for a good that results from a change in its price, making consumers more likely to purchase more of a less expensive alternative or less of a more expensive one.

Demand Curves

Graphs showing the relationship between the price of a good and the quantity demanded by consumers, typically downward-sloping.