Explanation:
A hub is used to send the message from one port to other ports.It does not know the specific address of the destination where the message needs to send.it works on Physical layer of the OSI model(layer 1).
A switch can handle data and it knows the specific address of the destination.A switch works on the data link Layer of the OSI model(layer 2).
Answer:
A. Network security allows organizations to continue to function.
C. Network security keeps intruders out of the network.
D. Network security prevents personal information from getting into the wrong hands.
Explanation:
Network security is a very important concept in networking. Mitigating cyber attacks like key logging, malicious software attacks, reconnaissance attacks, DOS attacks etc, have saved so many companies from bankruptcy and death.
Security in networks helps to prevent attackers from obtaining user personal information like Bank detail, health history etc.
Motion is the movement of a body part or an object
Answer:
code reviewer
Explanation:
In this scenario, the project manager should advertise for a code reviewer. Usually a development team has at least 2 code reviewers that are very familiar with the code that is being written for the project. Once sections of code have been completed it is usually the case that both the project lead and a code reviewer both review the entire software to look for bugs and note improvements that can be made to make the code more efficient.
Answer:
Following are the code in Java Language:
Scanner sc = new Scanner(System.in); // create a instance of scanner class
DecimalFormat frmt = new DecimalFormat("0.###"); // create a instance of // DecimalFormat class
System.out.println ("Enter the value: ");
double number = scan.nextDouble(); // Read the value by thje user
System.out.println (fmmt.format(Math.pow(number, 4))); // display the value
Explanation:
Following are the description of the code
- Create an instance scanner class i.e "sc".
- Create an instance of DecimalFormat class i.e "frmt".
- Read the value by the user in the "number" variable of type double by using the nextDouble()method.
- Finally, display the value by using System.out.println method. In this, we call the method format. The Math.pow() function is used to calculating the power up to the fourth value.
