A Systems Administrator Needs to Allow the Linux Server to Receive

question 91

Multiple Choice

A systems administrator needs to allow the Linux server to receive HTTP connections from Internet hosts. By default, the port for HTTP connections is blocked. Which of the following rules should be added in the firewall to allow this type of connection?

• A) firewall-cmd --zone=public --add-port=443/tcp --permanent
• B) firewall-cmd --zone=internal --add-port=80/tcp --permanent
• C) firewall-cmd --zone=public --add-port=80/tcp --permanent
• D) firewall-cmd --zone=internal --add-port=443/tcp --permanent

---

Definitions:

TRIN Ratio

The Trading Index Ratio, an indicator used in financial markets to gauge overall market sentiment or strength.

Moving Average

A statistical method used in finance to smooth out data points for a stock or other security by averaging the price points over a specific period of time, making it easier to identify trends.

Sell Signals

Indications, based on technical analysis or other factors, suggesting that it might be an opportune time to sell a particular investment.

Market Risk Premium

The difference between the expected return on a market portfolio and the risk-free rate.