You Have a Permanent Connection to the Internet

question 30

Multiple Choice

You have a permanent connection to the internet. Your local network includes a web server and an SMTP server. You are concerned about hacking, so you set up port filtering on your network. Your local SMTP server has stopped sending or receiving messages through the internet, but your users can still access local and internet sites. What could be the possible cause?

• A)Your DHCP server is down.
• B)Your web server is filtering mail requests.
• C)Your router is blocking port 25.
• D)Your router is blocking port 110.

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Definitions:

Standard Deviation

A statistic that measures the dispersion or spread of a set of data points relative to its mean.

Normal Model

Another term for the normal distribution, a bell-shaped curve that represents the distribution of many types of data in statistics.

Mathematics Test

An examination designed to assess one's knowledge or proficiency in mathematics.

Normal Model

A statistical distribution that is symmetric and bell-shaped, describing how continuous data is distributed around the mean.