Answer:
Option A is the correct answer choice for the above question.
Explanation:
IT(Information technology) Security is used to secure Information technology which means to secure the information which is traveling through the internet for communication on the internet. It uses various security tools.
When any security method is developed for the first time then there will be a risk to develop it. Sometimes the result of risk will be positive and sometime it will be negative because--
It is positive when the risk is being solved and the user achieved about the security which he is trying to develop.It is negative when the security designer did not achieve the right result for that research.The above question also states the same which is described above hence true is the right answer for the above question.
Your company leases a very fast internet connection and pays for it based on usage. You have been asked by the company president to reduce internet line lease costs. You want to reduce the amount of web pages that are downloaded over the leased connection without decreasing performance.
What is the best way to do this?
a. Install modems in employees' computers
b. Implement NAT
c. Install a proxy server
d. Install a packet-filtering firewall
Answer:
c. Install a proxy server
Explanation:
In computing a proxy server is implemented as a middle 'man' between the user and the internet. It will hence behave as a gateway that will seperate users from the websites that they browse. The major importance of a proxy server is enforcing security, however it can also act as a web filter allowing organizations to restrict access to certain websites. So when an organization or a school wishes to prevent access to certain sites a proxy server will be implemented, in the question scenario this web filter feature can be used to save cost associated with visiting sites not relevant to the organization's objectives
Someone asks you for help with a computer that hangs at odd times. You turn it on and work for about 15 minutes, and then the computer freezes and powers down. What do you do first?
a. Replace the surge protector.
b. Replace the power supply.
c. Wait about 30 minutes for the system to cool down and try again.
d. Install an additional fan
Answer:
C. Wait for about 30 minutes for the system to cool downand try again.
Explanation:
In computer system troubleshooting, there are two areas where problems can arise. They are hardware and software related issues.
software issues are application related like an application not installed properly, malicious software attack, corrupted operating system etc, while hardware has to do with a faulty hardware component in the system.
Example of a hardware related issue, when the active fan is faulty, the computer overheat and eventually shuts down to cool the system. When it cools down, the computer can boot again.
To confirm that the fan is faulty, when it shuts down to cool, wait for some time and try booting the system again. If it comes on, then the fan is bad.
The first step in diagnosing a computer that hangs and powers down is to wait for it to cool down and then retry, to see if overheating is the issue. If the problem persists, further diagnosis is needed to identify the underlying cause.
When faced with a computer that hangs and powers down unexpectedly, the most prudent first step is not to immediately replace parts without diagnosis. Instead, option c, wait about 30 minutes for the system to cool down and try again, would be the most logical initial approach. This step allows you to determine if overheating is the cause of the system instability.
If the computer works fine after it has cooled down, you might have identified an overheating issue. From there, you can check for obstructed air vents, clean out dust from within the computer, or consider the possibility of a malfunctioning fan or thermal paste that needs replacement. Continuous problems after the system has cooled down would suggest further investigation into the power supply, surge protector, and other potential causes of the failure is necessary.