In this era of technology, everyone uses emails for mail and messages. Assume you have also used the
mailboxes for conversation. Model the object classes that might be used in Email system implementation
to represent a mailbox and an email message.
Assume You are working as a software engineer and now you have been asked to deliver a presentation to
a manager to justify the hiring of a system architect for a new project. Write a list of bullet points setting
out the key points in your presentation in which you explain the importance of software architecture

Answer:

Hence the answer is top and peek.

Explanation:

In a stack, we insert and delete an item from the top of the stack. So we use variables top, peek to stay track of the position.

The insertion operation is understood as push and deletion operation is understood as entering stack.

Hence the answer is top and peek.

Answer:A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. You may already know that you can use a computer to type documents, send email, play games, and browse the Web.

Answer and Explanation:

I and II answered

Interruption: interruption occurs when network is tampered with or communication between systems in a network is obstructed for illegitimate purposes.

Interception: interception occurs when data sent between systems is intercepted such that the message sent to another system is seen by an unauthorized user before it reaches destination. Interception violates confidentiality of a message.

Modification: modification occurs when data sent from a system to another system on the network is altered by an authorized user before it reaches it's destination. Modification attacks violate integrity, confidentiality and authenticity of a message.

Fabrication: fabrication occurs when an unauthorized user poses as a valid user and sends a fake message to a system in the network. Fabrication violates confidentiality, integrity and authenticity.

Answer. Network

Explanation:

Answer:

This is worth 50 dollars.

Explanation:

١ - one

٢ - two

٣ - three

٤ - four

٥ - five

٦ - six

٧ - seven

٨ - eight

٩ - nine

٠ - zero

What you see above is the ten digits in Arabic.

Both 5 (٥) and 0 (٠) appear here, thus representing 50.

Answer:

Hence the answer is given as follows,

Explanation:

By using the NAND operator:-

P or Q and P -Q make an everyday implication sentence using the only NAND is given as,

Answer:

The function in C++ is as follows:

int isSorted(int ar[], int n){

if ([tex]n == 1[/tex] || [tex]n == 0[/tex]){

 return 1;}

if ([tex]ar[n - 1][/tex] < [tex]ar[n - 2][/tex]){

 return 0;}

return isSorted(ar, n - 1);}

Explanation:

This defines the function

int isSorted(int ar[], int n){

This represents the base case; n = 1 or 0 will return 1 (i.e. the array is sorted)

if ([tex]n == 1[/tex] || [tex]n == 0[/tex]){

 return 1;}

This checks if the current element is less than the previous array element; If yes, the array is not sorted

if ([tex]ar[n - 1][/tex] < [tex]ar[n - 2][/tex]){

 return 0;}

This calls the function, recursively

return isSorted(ar, n - 1);

}

Answer:

Explanation:

so this is what "format" is about,   it's saying what do the ones and zeros represent.   b/c the bits can represent lots of different things ,  like letters with ascii code ,   and that's got several types.  some are 8 bits,  some are 16 bits,  the questions  you've shown are in groups of 5 which is really not a "thing" in binary,  it's always by twos,   without some type of  "frame work"  around the bits, we won't know what they represent,  if that is helping?   the important part is what is the "frame work"   that these bits are in.

all of your questions seem to have some  "art"  thing going on,  they make some kinda of binary artwork,  for what they are saying, that's not what's important.  Other than if they form  palindromes,   maybe that's what the questions are really about, how these do from palindromes, that is, they read the same backwards as forwards... I know.. why would anyone read backwards.. but a computer can do that pretty quickly,  sooo sometimes to check,  it will read  forwards and backwards.. but when there is a palindrome,  the computer is "confused"  

this is also a big big part of  "typing"  not like on a keyboard but when you program, and you say that  your variables are of a certain type,  like a char, or a string, or a double, you are specifying how many bits will be used to represent your data.  so then when you put the ones and zeros into the memory ,  ( think RAM)  then it's stored in groups of what ever size you've determined.    hmmmm   does this help?

Answer:

A heading style to add a document title

The feature can she use to add a document title at the top of each page is - Heading style. Therefore option A is the correct resposne.

A footer is a text that is positioned at the bottom of a page, whereas a header is text that is positioned at the top of a page. Usually, details about the document, such as the title, chapter heading, page numbers, and creation date, are inserted in these spaces.

A piece of the document that appears in the top margin is called the header, while a section that appears in the bottom margin is called the footer. Longer papers may be kept structured and made simpler to read by including more information in the headers and footers, such as page numbers, dates, author names, and footnotes. Each page of the paper will have the header or footer text you input.

To read more about Header and Footer, refer to - https://brainly.com/question/20998839

#SPJ2

Answer:

please write in english i cannot understand

Explanation:

Answer:

C. Wi-Fi jacking

Explanation:

Answer: yessir b

Explanation:

Answer:

Explanation:

/* From the information provided, For now will consider the name of table as TRIPGUIDES*/

/*In all the answers below, the syntax is based on Oracle SQL. In case of usage of other database queries, answer may vary to some extent*/

1.

Select R.Reservation_ID, R.Trip_ID , C.Customer_Num,C.Last_Name from Reservation R, Customer C where C.Customer_Num=R.Customer_Num ORDER BY C.Last_Name

/*idea is to select the join the two tables by comparing customer_id field in two tables as it is the only field which is common and then print the desired result later ordering by last name to get the results in sorted order*/

2.

Select R.Reservation_ID, R.Trip_ID , R.NUM_PERSONS from Reservation R, Customer C where C.Customer_Num=R.Customer_Num and C.LAST_NAME='Goff' and C.FIRST_NAME='Ryan'

/*Here, the explaination will be similar to the first query. Choose the desired columns from the tables, and join the two tables by equating the common field

*/

3.

Select T.TRIP_NAME from TRIP T,GUIDE G,TRIPGUIDES TG where T.TRIP_ID=TG.TRIP_ID and TG.GUIDE_NUM=G.GUIDE_NUM and G.LAST_NAME='Abrams' and G.FIRST_NAME='Miles'

/*

Here,we choose three tables TRIP,GUIDE and TRIPGUIDES. Here we selected those trips where we have guides as Miles Abrms in the GUIDES table and equated Trip_id from TRIPGUIDES to TRIP.TRIP_Name so that can have the desired results

*/

4.

Select T.TRIP_NAME

from TRIP T,TRIPGUIDES TG ,G.GUIDE

where T.TRIP_ID=TG.TRIP_ID and T.TYPE='Biking' and TG.GUIDE_NUM=G.GUIDE_NUM and G.LAST_NAME='Boyers' and G.FIRST_NAME='Rita'

/*

In the above question, we first selected the trip name from trip table. To put the condition we first make sure that all the three tables are connected properly. In order to do so, we have equated Guide_nums in guide and tripguides. and also equated trip_id in tripguides and trip. Then we equated names from guide tables and type from trip table for the desired results.

*/

5.

SELECT C.LAST_NAME , T.TRIP_NAME , T.START_LOCATION FROM CUSTOMER C, TRIP T, RESERVATION R WHERE R.TRIP_DATE='2016-07-23' AND T.TRIP_ID=R.TRIP_ID AND C.CUSTOMER_NUM=R.CUSTOMER_NUM

/*

The explaination for this one will be equivalent to the previous question where we just equated the desired columns where we equiated the desired columns in respective fields and also equated the common entities like trip ids and customer ids so that can join tables properly

*/

/*The comparison of dates in SQL depends on the format in which they are stored. In the upper case if the

dates are stored in the format as YYYY-MM-DD, then the above query mentioned will work. In case dates are stored in the form of a string then the following query will work.

SELECT C.LAST_NAME , T.TRIP_NAME , T.START_LOCATION FROM CUSTOMER C, TRIP T, RESERVATION R WHERE R.TRIP_DATE='7/23/2016' AND T.TRIP_ID=R.TRIP_ID AND C.CUSTOMER_NUM=R.CUSTOMER_NUM

*/

6.

Select R.RESERVATION_ID, R.TRIP_ID,R.TRIP_DATE FROM RESERVATION R WHERE R.TRIP_ID IN

{SELECT TRIP_ID FROM TRIP T WHERE STATE='ME'}

/*

In the above question, we firstly extracted all the trip id's which are having locations as maine. Now we have the list of all the trip_id's that have location maine. Now we just need to extract the reservation ids for the same which can be trivally done by simply using the in clause stating print all the tuples whose id's are there in the list of inner query. Remember, IN always checks in the set of values.

*/

7.

Select R.RESERVATION_ID, R.TRIP_ID,R.TRIP_DATE FROM RESERVATION WHERE

EXISTS {SELECT TRIP_ID FROM TRIP T WHERE STATE='ME' and R.TRIP_ID=T.TRIP_ID}

/*

Unlike IN, Exist returns either true or false based on existance of any tuple in the condition provided. In the question above, firstly we checked for the possibilities if there is a trip in state ME and TRIP_IDs are common. Then we selected reservation ID, trip ID and Trip dates for all queries that returns true for inner query

*/

8.

SELECT G.LAST_NAME,G.FIRST_NAME FROM GUIDE WHERE G.GUIDE_NUM IN

{

SELECT DISTINCT TG.GUIDE_NUM FROM TRIPGUIDES TG WHERE TG.TRIPID IN {

SELECT T.TRIP_ID FROM TRIP T WHERE T.TYPE='Paddling'

}

}

/*

We have used here double nested IN queries. Firstly we selected all the trips which had paddling type (from the inner most queries). Using the same, we get the list of guides,(basically got the list of guide_numbers) of all the guides eds which were on trips with trip id we got from the inner most queries. Now that we have all the guide_Nums that were on trip with type paddling, we can simply use the query select last name and first name of all the guides which are having guide nums in the list returned by middle query.

*/

Answer:

Explanation:

#include <iostream>

using std::cout;

using std::endl;  

using std::cin;  

int main()

{

int side, rowPosition, size;

cout << "Enter the square side: ";

cin >> side;

size = side;

while ( side > 0 ) {

rowPosition = size;

 while ( rowPosition > 0 ) {

if ( size == side || side == 1 || rowPosition == 1 ||  

rowPosition == size )

cout << '*';

else

cout << ' ';

--rowPosition;

}  

cout << '\n';

--side;

}

cout << endl;

return 0;

}

Answer:

Network scan

Explanation:

Cyber security can be defined as preventive practice of protecting computers, software programs, electronic devices, networks, servers and data from potential theft, attack, damage, or unauthorized access by using a body of technology, frameworks, processes and network engineers.

Some examples of cyber attacks are phishing, zero-day exploits, denial of service, man in the middle, cryptojacking, malware, SQL injection, spoofing etc.

Generally, a security assessment is carried out by network security experts on a regular basis to determine potential loopholes or vulnerabilities in the information and technology (IT) infrastructure. One of the techniques or approach used in security assessment is a network scan.

A network scan is a security assessment technique used for the automatic detection of host systems on a network. Although a network scan isn't capable of discovering or detecting all the weaknesses on a network, it avails users information about the computer systems that are active on the network and what services the computer systems offer or what ports are available on them.

Answer:

Explanation:

Operation Address Hit? Read Value

Read 0x834 No Unknown

Write 0x836 Yes (not applicable)

Read 0xFFD Yes CO

Answer:

1) 10cos ( 2πfct + 10sin 2πfmt )

2) 50 watts

3) 1000 Hz

Explanation:

m(t) = 10cos(1000πt)

c(t) = 10cos(2πfct )

modulation index (  = 10

1) expression for modulated signal ( u(t) )

u(t) = Ac(cos 2πfct ) + A (cos 2πfct m(t) ) Am cos2πf mt

      = 10cos 2πfct + 100 cos 2πfct  cos2π500t

      = 10cos ( 2πfct + 10sin 2πfmt )

2) power of modulated signal

power of modulated signal  μ^2 / 2 ]

           = 10^2/2 ]

           = 50 watts

3) Bandwidth

B = 2fm  = 2 * 500 = 1000 Hz

Answer:

bing or alien ware is the best.

Answer:

Your choice, but personally, desktop is better.

Explanation:

Desktop devices have portrait orientations so content can stretch across a screen and often multiple messages or images can live comfortably in such a wide space. Mobile devices are usually used in portrait orientation (and the smaller screens mean that even in landscape mode, horizontal space is limited).

Following are the Java Program to the given question:

import java.util.Scanner; //import package for user-input

public class Count  //defining a class Count  

{

   public static int countMultiples(int low,int high,int x)//defining a method countMultiples that takes three integer parameters

   {  

       int c=0,i; //defining integer variables that hold value

       for(i=low;i<=high;i++)//defining loop that iterates value between low and high  

       {  

           if(i%x==0)//defining if block that uses % operator to check value

           {

               c+=1; //incrementing c value

           }

       }

       return c; //return c value

   }

   public static void main(String[] args)//main method  

   {  

       int l,h,x;//defining integer variable

       Scanner scnr=new Scanner(System.in); //creating scanner class object  

       l=scnr.nextInt(); //input value

       h=scnr.nextInt();//input value

       x=scnr.nextInt();//input value

       System.out.println(countMultiples(l,h,x)); //calling method and print its value

   }

}

Output:

Please find the attached file.

Program Explanation:

Learn more:

brainly.com/question/16106262

Answer:

f. None of the above

Explanation:

Considering the available options, the right answer is option F "None of the above."

Common factors for database management system selection are the following:

1. Cost: various DBMS vendors have different pricing, hence, interested buyers will consider the price before selections

2. Features and Tools: different types of DBMS have varied features and tools in carrying out the work.

3. Software requirements: there are various software requirements in various DBMS, such as encryption support, scalability, application-level data recovery, etc.

4. Hardware requirement: various DBMS vendors have different hardware requirements to consider, such as sizeable RAM, CPU value, etc.

Hence, in this case, the correct answer is option F.

Answer:

When implementing a 1:1 relationship, the foreign key should be placed on the optional side if one side is mandatory and one side is optional.  

When this is implemented, the foreign key should be made mandatory.

Explanation:

A foreign key (FK) is a primary key (PK) in relational databases.  It is used to establish a relationship with a table that has the same attribute with another table in the database.  A mandatory relationship exists when the foreign key depends on the parent (primary key) and cannot exist without the parent.  A one-to-one relationship exists when one row in a data table may be linked with only one row in another data table.

Answer:

Download the financial report as =FDS codes with cell referencing.

Explanation:

An excel is a spreadsheet that is developed by the Microsoft company for the Windows operating system. It can be also used in iOS, macOS and Android. It has many features including  graphing tools, calculation, pivot tables, etc.

In excel the fastest way to pull out a financial data from an application into the Excel as the refreshable formulas which can be edited or can be uploaded later on is by downloading the financial report as an +FDS code with the cell referencing.

In excel, cell refreshing is a way to refer to a cell in the formula.

Answer:

15

Inside the type declaration, you specify the maximum length the entry can be. For branch, it would be 15.

I can't seem to type the full "vc(15)" phrase because brainly won't let me.

Answer:

The output is:

1 2 3 4 5

Explanation:

Given

See attachment for code segment

Required

The output of rec2(5)

From the attached code segment, we have the following:

The base case: if (x==0){ return;}

The above implies that, the recursion ends when the value of x gets reduced to 0

The recursion:

rec2(x-1); ---- This continually reduces x by 1 and passes the value to the function

printf("%d ", x); This prints the passed value of x

Hence, the output of rec2(5) is: 1 2 3 4 5

Answer:

data is the raw fact about its process

Explanation:

input = process= output

data is the raw fact which gonna keeps in files and folders. as we know that data is a information keep in our device that we use .

Answer:

Data and process modelling involves three main tools: data flow diagrams, a data dictionary, and process descriptions. Describe data and process tools. Diagrams showing how data is processed, transformed, and stored in an information system. It does not show program logic or processing steps.

Answer:

output

Explanation:

it can be seen and touched

Answer:

double decimal1, decimal2;

int whole;

Explanation:

Required

Declare 2 decimals and 1 int.

The syntax to declare a variable is:

data-type variable-name;

To declare decimal, we simply make use of double or float data types.

So, we have:

double decimal1, decimal2; ----> for the decimal variables

And

int whole; ---- for the whole number

The statement that is true about network protocols is that:

A network protocol is a system of principles that governs how data is delivered between devices on the same network.

Primarily, it enables linked devices to interact with one another despite variations in internal operations, architecture, or design.

The way this is done is true the use of Transmission-control protocol/Internet protocol (TCP/IP).

TCP/IP is the primary protocol or communication language of the Internet. Therefore, using a protocol other than TCP/IP can result in data loss.

Learn more about network protocol here:

https://brainly.com/question/17820678

Answer: the Search bar located above the list of contacts.

the Search People bar on the Find command group.

the Search People located on the People navigation icon.

CTL + E to activate the search contacts box.

advanced Find under the Search tab.

Explanation:

An Outlook user can search for contacts through the following ways:

• the Search bar located above the list of contacts.

• the Search People bar on the Find command group.

• the Search People located on the People navigation icon.

• CTL + E to activate the search contacts box.

• advanced Find under the Search tab.

Therefore, the correct options are A, B, C, D and E.