How long is a subnet mask? (Please select one of the four options)

24 bits

32 bytes

32 bits

16 bits

Explanation:

The precision in double values is twice as compared to float values.Hence double have smaller rounding errors as compared to float variables .A double is of 64 bits and float is of 32 bits usually hence floats have more rounding errors and on more number than doubles.Double has 15 decimal digits of precision and float has only 7 decimal digits for precision.

Answer:

Bootloader is the program that helps in the revitalizing the micro-controller of the operating system .It makes the operating system self programmable.It's main purpose is loading the tasks or operations to ensure the working interface between software and hardware whenever the system gets booted up.

It is also known as the bootstrap loader.It is necessary and common because it is the first mechanism that works whenever the system gets initialized or booted. Without this feature the reloading of the programs will  not be possible.

Answer: Procedure division

Explanation:

 The SORT statement is basically used in the procedure division for placing the various records in the sort file. The SORT statement easily accept the records from the different files and then sorting them accordingly to the specific file key in the database.

The SORT statements are used in the procedure division but it does not used in the declarative portion in the sorting file. The SORT statement is basically coded in the form of independent and fixed segment.

Answer:

// here is code in c++.

#include <bits/stdc++.h>

using namespace std;

// main function

int main() {

// variable

int num;

int tot_sum=0;

cout<<"enter a number: ";

// read the value of n

cin>>num;

// check the multiple of 2 or 5 from 1 to n

for(int x=1;x<=num;x++)

{

// if multiple of 2 or 5 then add them

   if(x%2==0 ||x%5==0)

   {

       tot_sum=tot_sum+x;

   }

}

// print the sum

cout<<"sum of multiple of 2 or 5 is:"<<tot_sum<<endl;

return 0;

}

Explanation:

Read the number "n" from user.Check every number from 1 to n, if it is a multiple of 2 or 5 then add them to "tot_sum".When the for loop end, "tot_sum" will have sum of all the number which are either multiple of 2 or 5.Print the sum.

Output:

enter a number:11

sum of multiple of 2 or 5 is:35

Answer:

C. Bell and LaPadula

Explanation:

The first mathematical models of multilevel security computer system was developed by Bell and Lapadula. Their full names are David Elliot Bell and Leonard J. Lapadula. Their model used to define the concept of modes of access,secure state machine and outlined the rules of access.

Answer: URN(Uniform Resource Name) is the basically a subset of the Uniform Resource identifier(URL). It uses "urn"scheme for the working an implementation. Uniform resource name functions by identifying components uniquely through their name.

The most common example of URN is ISBN (International Standard Book Number)number which helps in the unique searching and identification of book.

Answer:

True.

Explanation:

The statement is true that only a third of all the Americans have broadband service present at their home and this percentage is 87 percent among the telecommuters.

America has made significant progress in the expansion of high -speed internet access in past several years but 19 million american still don't have broadband.

Answer: Perform calculations on entire columns of data

Explanation:

 Data aggregate is the process that gather the information and express into the form of summary. It basically used in the statistical analysis for calculating the entire column of the data.

The main purpose pf the data aggregate is that it collect more data or information about the specific variable of the given data. The data is basically available in the form of aggregate.

The data aggregate function easily produced the summarized data in the database.

Answer:

// here is code inn c++.

#include <bits/stdc++.h>

using namespace std;

// main function

int main()

{

// variable

   int t;

   double acc=32;

   cout<<"Enter the time in seconds:";

   // read the time in seconds

   cin>>t;

   // Calculate the distance=acceleration x time-squared divided by 2

   double dis=acc*(t*t)/2;

   // print the distance

   cout<<"distance is: "<<dis<<" feet."<<endl;

return 0;

}

Explanation:

Read the time in seconds from user and assign it to variable "t". declare and initialize variable "acc" with 32.Find the distance as "dis=acc*(t*t)/2". Print the distance.

Output:

Enter the time in seconds:10

distance is: 1600 feet.

Answer:

b. join

Explanation:

Correct answer:

Join: It allow join(paste) two tables by one or more commun columns

Example in the image attached

Bad answer:

Union: it only allow paste two tables with the same structure

select: it only allow get information from 1 table if not use join

having: it only allow get filtered information with a condition

Answer:A) Packer sniffer

Explanation: Wireshark is analyzer of packet which are open sourced.It helps in providing the services like troubleshooting, development analysis etc with the help of sniffing activity.The sniffing of the packet that a user owns is the technique for analyzing.

Other options are incorrect because port scanner provides data regarding the technique for network connection,vulnerability scanner scan the vulnerability of the network and content filter is used for filtering the excess web pages.Thus, the correct option is option(A).

Final answer:

Wireshark is a Packet sniffer used for capturing and analyzing network traffic in a readable format, making it different from port scanners, vulnerability scanners, or content filters.

Explanation:

Wireshark is an example of a Packet sniffer. Packet sniffers are tools used for network troubleshooting, analysis, software and protocol development, and education. Wireshark, specifically, captures packets in real-time and display them in human-readable format. It allows users to see the details of the packets being transmitted over the network, giving an in-depth understanding of the network traffic. This utility is not designed to scan ports, detect vulnerabilities, or filter content, which distinguishes it from options B, C, and D respectively.

Answer:

C.  corrective

Explanation:

Security controls

These are actions or measures taken to maintain and/ or restore the security of the system. Security controls are categorized as corrective, preventive and detective, which are discussed below.

Corrective

Security controls which help in taking the corrective steps after the malicious activity has done damage to the system or restoring the security of the system are called corrective security controls.

These controls also act as preventive measures for future risks.

These controls perform the healing and have remedial action for the damage done to the system.

Once the system has been recovered, appropriate measures are put in place to avoid further damage.

The damage can be done to the computer system, its hardware and software resources or the data.

Examples include restoring the database from the backup file.

Updating or renewing antivirus software rectifies the security against virus.

For example, once the database has been restored, access control, antivirus and other measures are employed to prevent the database from being corrupted and to prevent system from being affected.

Preventive

Security controls which help in stopping the malicious activity from harming the system are called preventive security controls.

As per the name, these measures are employed to prevent any security breach.

These measures prevent any suspicious activity from taking place which may cause harm to the system.

Firewalls prevent unauthorized access.

Antivirus prevents malicious applications from running.

Login feature to give access only to authorized user.

Detective

Security controls which help in detecting the malicious activities and alerting the security personnel are called detective security controls.

As per the name, these measures are used to identify any suspicious activity and report them. Detective controls do not prevent or correct any security breach.

Alarms are employed to detect and alert any suspicious activity.

Intrusion detection system (IDS).

In an ideal situation, security controls are a combination of all the types mentioned above.

The type of security control involving measures that restore a system is referred to as: c. corrective.

A corrective security control can be defined as the type of security control measures that includes technical, administrative and physical measures which are initiated to help restore a system to its original state after a breach or an unauthorized activity has occurred.

Therefore, the type of security control involving measures that restore a system is referred to as: c. corrective.

Learn more about corrective security control on:

https://brainly.com/question/13484623

Answer: (A) SQL injection

Explanation:

 Th SQL ( Structured query language) injection is the code injection method or technique that is basically used in data driven attack various applications. The SQL injections are basically used by hackers for attacking on various websites.

The SQL injection are used by the hackers to insert the malicious structured query language statement in the input state for the execution process in the database.  

When we use the SQL injection during that process, the attacker can easily access and modify the database.

Answer:

Microsoft Windows

Explanation:

Open Source Software is a software which is accessible to the public. we can modify or extend the code .In the given options Microsoft windows is not an open source operating system. User don't have access to source code where as Linux is an open source software where you can't limit to the functionality which they provided. you can control and extend the source code which they given for this OS

Answer:

Option D is correct.

Explanation:

A high-level safety violation could be anticipated to have a serious or disastrous negative impact on organisational activities, organisational assets.

The effect of the violation on an organisation may be staggering, and sometimes unknown until the outcomes are achieved. It is strange that, owing to harmful or neglectful acts, the greatest incidents of compromise come from within the business ; it requires time for an organisation to recover.

A high-level security breach might have a serious or catastrophic impact on an employee's performance, assets, or people.

The impact of a violation on such an organization may be enormous, and the consequences are often unclear until they are realized.

It's odd that the majority of incidences of breach occur within the company as a result of damaging or negligent behavior; it takes time for an organization to recover.

Find out more information about 'Impact of a violation':

https://brainly.com/question/4543526?referrer=searchResults

Answer: (C) Unicast

Explanation:

 According to the question, if we sending an email to someone individually then, uni-cast addressing type is used. The unit addressing is basically used to represent the single local area network interface.

The unit-cast frame sent only to the specific devices not to the group of the devices. The unitcast basically use between the one source to the one destination.

On the other hand, multicast and broadcast are incorrect because the frame sent to the group of the devices not the specific devices. Therefore, Option (C) is correct.

Answer:

for edge users

a microsoft account

Explanation:

Answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

// main function

int main()

{

   // variables

double price,fee,tax;

double total;

cout<<"enter the price of car:";

// read the price of car

cin>>price;

cout<<"enter the fee:";

// read the fee

cin>>fee;

cout<<"enter the tax (in %):";

// read the tax

cin>>tax;

a

// total cost

total=price+fee+(price*tax)/100;

// print the cost

cout<<"total cost is: "<<total<<endl;

return 0;

}

Explanation:

Read the price of the car from user and assign it to variable "price",read fee and assign it to variable "fee" and tax to variable "tax".Then calculate the total cost of the car by adding the fee and tax of car to the price of car.

Output:

enter the price of car:1000

enter the fee:50

enter the tax (in %):10

total cost is: 1150

Answer:

#code in python.

#function that calulate 2 numbers are relatively prime or not

def fun(x,y):

   while(y):

       x,y=y,x%y

   return x

#user input

a=int(input("enter first number:"))

b=int(input("enter second number:"))

#call the function

if(fun(a,b)==1):

   print(" Both numbers are Relatively prime")

else:

   print("Both numbers are Not relatively prime")

Explanation:

Read two numbers from user.Call the function fun() with parameter "a" & "b". In the function, it will perform Euclid algorithm to find the greatest common divisor.If it is 1 then both are relatively prime else both are not relatively prime.

Output:

enter first number:5

enter second number:125

Both numbers are Not relatively prime

enter first number:8

enter second number:9

Both numbers are relatively prime

Answer: (A) PIN

Explanation:

 PIN is the personal identification number which is basically used to verify the identity of the users. It is confidential number which is used as the authenticating factor.

The PIN is the combination of the number that is also use to authenticate the banking system with the users.

On the other hand, the other given options are incorrect because these are not used to identify the users identification process.

Therefore, Option (A) is correct.

Answer:

a. 4

b. 3

c. pi

Explanation:

Generic formula of a sine wave: s(t) = Amp * sin ( 2*pi*freq*t + phase)

where, Amp => Amplitude

freq => frequency

phase => phase

Given sine wave: s(t) = 4sin(2π3t + π)

Comparing it with the generic form , we can identify that :

a. Amplitude : 4

b. Frequency : 3

c. Phase : pi

Amplitude measures peak displacement from origin, Frequency is the number of cycles per second and phase is the relative positioning of the wave with respect to the origin.

Answer:

1) Amplitude = 4

2) Frequency  =[tex]1Hz[/tex]

3) Initial phase = [tex]\pi [/tex]

Explanation:

The general equation of wave is

[tex]y(t)=Asin(\omega t+\phi )[/tex]

where

A is the amplitude of the wave

[tex]\omega [/tex] is the angular frequency of the wave

[tex]\phi [/tex] is the initial phase of the wave

The given wave function is

[tex]s(t)=4sin(2\pi t+\pi )[/tex]

Comparing with the standard function we get

1) Amplitude = 4

2) Frequency  =[tex]\frac{\omega }{2\pi }=\frac{2\pi }{2\pi }=1Hz[/tex]

3) Initial phase = [tex]\pi [/tex]

Answer:

Following are the program in c++ language

#include<iostream> // header file

using namespace std; // namespace

int main()  

{

int n1,i; // variable declaration

cout<<"Enter Number: ";

cin>>n1; // input number

for(i=n1;i>1;i=i-2) // check the condition  

{

n1 = n1-2; // decrement the value of number by -2  

}

if(n1==0) // check if it is 0

cout<<"number is EVEN"<<"\n"; // print even

else

cout<<"number is ODD"<<"\n"; // print odd

return 0;

}

Output:

Enter Number: 45

number is ODD

Again run the program

Enter Number:10

number is EVEN

Explanation:

In this program, we input the number by a user in variable n1. After that, we iterate the for loop and initialize the value of a variable" i" in for loop and check the condition.

In each iteration, the variable n1 is decrement by 2 and store it n1.

Finally, check if n1==0 then it print number is EVEN  otherwise it print number is ODD.

Answer:C) Feedback

Explanation: System control is the controlling and managing activity of the system by commands ,regulations, management practices etc.It helps in the analyzation of the system and improving the ability of performing the tasks.Feedback is the component of the control system that is obtained as the output after the controlling  technique is applied in the system.

Other options are incorrect because environment is the surrounding of the system ,interface is the connection between the components of the system and boundary is not a technical term of control system.Thus, the correct option is option(C).

Answer: D)The pattern of blood vessels at the back of the eye.

Explanation: The retinal scan is the techniques which is used in the bio-metric mechanism.The scanning of the retina's blood vessel pattern is capture by the scanner is the unique technique which is used for bio-metric purpose.

Blood vessel pattern is capture because it is present in unique form for every person and will help in distinguishing a person from another person while scanning.

Other options are incorrect because light reflection or reaching near retina and light pattern are not the unique way for identification while scanning a person.Thus the correct option is option(D).

Answer:

The minimum number of bits necessary to address 8K words is 13.

Explanation:

You have the number of words to address that is 8000 words, a word is the smallest addressable memory unit.  

8000 words can be addressed with [tex]2^{n}[/tex]  units. Now you have to find the value of n that approximates to the number of words.  

[tex]2^2=4\\2^4=16\\2^7=128\\2^{10}=1024\\2^{12}=4096\\2^{13}=8192[/tex]

So you can see that 13 bits are needed to address 8K words.

Answer:

 (C) BITNET :

 BITNET is basically established in united state (US) in the 1981 and used in the cooperative world as wide area computer networking. The term BITNET is originally known as because it is time network.

It is also known as forward type of the networking and the BITNET can easily transfer the data of email and files from one network server to another server. The BITNET typically uses the RSCS protocol for the purpose of networking job and it is also use in the internal IBM, which is known as Virtual network (VNET).  

The BITNET is basically developed by the city university of the new York. It is used in the mainframe operating system for implementation the virtual memory system (VMS).  

Answer: Process

Explanation: Processing data in the computing field is referred as the manipulation and transformation of data into useful output. The raw data is transformed machine language data.The processing also consist of the operations performed on data.

Other options are incorrect because decision is the final judgement made regarding computing,problem is issue in system and system is the complete unit in which processing takes place.Thus, the correct option is process.

Answer:

many forms

Explanation:

Polymorphism is a construct in object oriented programming which means multiple forms.For example: Suppose I have a function which performs the add operation on two integers and another function with the same name which concatenates 2 given strings:

The two functions represent polymorphic forms of the add function. The function to be invoked at runtime is determined by the runtime argument type.

For example , add (2,3) will invoke int add ( int a, int b);

Similarly, add("hello","world") will invoke string add ( string a , string b);

Answer: The differences between the flow control and congestion control are as follows:-

The TCP for the congestion control works as elimination of the congestion in the sender's field in network layer and transport layer.Flow control is used in TCP to make surety about the non-overwhelming nature of sender towards receiver in the transport layer and data link layer.

Answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

// main function

int main()

{

// variables

   int a,b,c;

   //ask to enter semester hours

   cout<<"Enter the number of hours in the semester:";

   // read the semester hours

  cin>>a;

  //print the semester hours

  cout<<"You have taken "<<a<<" hours in semester."<<endl;

  // find the time spend outside of the class

  b=a*2;

  c=a*3;

  // print the time outside class

  cout<<"you should spend "<<b<<"-"<<c<<" hours outside of class"<<endl;

return 0;

}

Explanation:

Read the hours taken in the semester from user and assign it to "a".

Then find its 2 and 3 time.This will be the time user should spend outside

of the class.

Output:

Enter the number of hours in the semester:15

You have taken 15 hours in semester.

you should spend 30-45 hours outside of class  

If you were looking for the answer to this

A student is studying for a social studies test, and he is also writing a paper and reading a novel for his language arts class. Which statement represents a well-written SMART goal that the student has written for himself for one study session?

Spend time studying for social studies and language arts by the end of the semester.

Spend time today on social studies, and spend time tomorrow on language arts.

Spend one hour reviewing chapter six for social studies, one hour writing the paper, and four hours reading the novel.

Spend 30 minutes reviewing section one of chapter six for social studies, one hour writing an outline for language arts, and 30 minutes reading the novel by 9 p.m. today.

Because when you look up this question this one pops up so im posting this so people can find the answer.

Answer:

Option C

Explanation:

The type of illustration used by Rachael to add a new organizational chart is SmartArt Graphic.

In this tool, the information or data or ideas a person uses in the project are represented visually.

The different layout choices like organizational charts, etc enables a person to select the one that fits the information provided in the project.

Some are design to convey particular form of messages or information while the others are used for simple purposes like highlighting the appearance of texts or bullets.