Answer:
The answer to the given question is "detailed costs ".
Explanation:
SDLC stands for System development life cycle. It is also known as the Software development life cycle. In SDLC 7 phases are "Planning, Analysis, Design, Development, Testing, Deployment, Maintenance." The detailed cost is a part of the SDLC phases.
In the detailed cost, we calculate the total cost for making software. Then we go to the next phase that is the implementation state. It is also known as the "development state".
The general syntax for the function prototype to overload the assignment operator = for a class is ____.a. friend className& operator=(const className&);b. const className& operator=(const className&);c. className& operator=(className&);d. string className& operator=(className&);
Answer:
Option (B) is the correct answer to the following question.
Explanation:
Here, in the code "const" is the constant keyword which is used when we need that the value stored in that variable will never change.
The following option is correct because the assignment operator are those operator which initialize the value in the variable and overloading of the assignment operator would be as we use the other operators and also we could use them by creating the objects as we use in the copy constructor.
So, that's why the following option is correct.
Given the following method definitions: void mystery(double a) { System.out.print("double! "); } void mystery(int a) { System.out.print("int! "); } What will be the output of the following code? mystery(1); mystery(1.0); Select one:
a. It is impossible to predict
b. int! double!
c. Duplicate function names results in a compiler error.
d. double! int!
Answer:
The correct answer to the following question is option "b".
Explanation:
The method having the same name but the arguments have different so it is called method overloading. It is a part of the object-oriented programming language (oops).
In the given code we define same method two times that is "mystery()". but in this method, we pass two different parameters. For the first time, we pass a double variable that is "a" as a parameter. In the second time, we pass an integer variable that is "a" as a parameter and in both functions, we write some codes. In the calling time, we call function two times. In first time calling we pass an integer value that is "1" and second time calling we pass double value that is "1.0". So the output of this code is "int! double!".That's why the option "b" is correct.
The Open Systems Interconnection (OSI) is a conceptual model whose purpose is to make networks more manageable. Its objectives include allowing for more portable hardware and software integration, the creation of standard interfaces that would allow manufacturers of different systems to interconnect their equipment and the creation of a model that would be used world-wide. There are seven layers to the OSI. The lowest - or first - layer allows a contiguous sequence of bits to be transmitted through the network. Which is the first layer: A. data-link layer, B. physical layer, C. network layer, D. transport layer
Answer:
A. data-link layer
Explanation:
Data-link layer is the first layer and allows a contiguous sequence of bits to be transmitted through the network.
On top of it is the Network Layer and it handles the task of routing network messages from one computer to another.
Then comes the Transport Layer which is the basic layer at which one network computer communicates with another network computer.
The first layer of the OSI model is the Physical Layer, which is responsible for the transmission of raw bit streams over a physical medium.
The Open Systems Interconnection (OSI) model is a conceptual framework used to understand and design network systems. It divides network communications into seven distinct layers, each with its own specific function. The first and lowest layer is the Physical Layer, which deals with the transmission of raw bit streams over a physical medium, such as cables and switches.
The seven layers of the OSI model are:
Physical LayerData-Link LayerNetwork LayerTransport LayerSession LayerPresentation LayerApplication LayerNetwork access control authenticates users logging into the network and determines what data they can access and actions they can perform.
A. True.
B. False
Answer:
The answer is letter A
Explanation:
The statement is TRUE
Classes cannot:
A) Be derived from other classes
B) Initialize data members in the class definition
C) Be used to model attributes and behaviors of objects
D) Include objects from other classes as members
Classes cannot Initialize data members in the class definition.
B) Initialize data members in the class definition
Explanation:
Class is defined by end user data type where it can handle multiple data type and referred to other classes also. Class is also called as data structure object or object class.
Due to class methods total programming language coding style is changes. For example employee of an organization should hold his or her employee number, address detail, spouse details, salary details
Where in old style programming language we need to declare separate variable to hold the data types, where we can define employee as class which can hold employee number, address fields, and again define salary details as other class and add employee->employee number where key connect between to class which is called derived class.
This morning you modified five large data files in your home folder in Linux, and now you want to find and delete the files because you no longer need them. Which of the following commands can you use to list and sort files based on the time they were modified
Answer:
ls -t
Explanation:
"ls" command in Linux is used very often. It lists the directory contents. The "ls" utility is part of the core utilities and installed in all Linux distributions.
When ls command is used with "-t" , "ls -t" sorts files/directories list by date created or modified.
More advanced version is "ls -lt", where it sorts by date and shows info about directory, size, modified date and time, file or folder name and owner of file and its permission.
The process of making changes to an information system to evolve its functionality, to accommodate changing business needs, or to migrate it to a different operating environment is known as ________ maintenance. A. adaptive B. perfective C. preventive D. corrective E. predictive
Answer:
Option A is correct.
The process of making changes to an information system to evolve its functionality, to accommodate changing business needs, or to migrate it to a different operating environment is known as adaptive maintenance.
Explanation:
"Adaptive Maintenance" as obvious from the name are the changes or modifications that are implemented whenever the system is affected by any kind of change.
Whenever a process adapts itself to the change in outer system, in order to perform in a better way, this is termed as adaptive maintenance .
This can be of great value as the working of the whole system depends on the maintenance so that it may becomes better than better.
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Write the definition of a function printLarger, which has two int parameters and returns nothing. The function prints the larger value of the two parameters on a single line by itself. (For purposes of this exercise, the "larger" means "not the smaller".)
Answer:
def printLarger(x: int ,y: int):
print(max(x,y))
Explanation:
The function is written in python as follows:
the fuction printLarger takes two integer parameters x and ymax() function determines larger value of x and y. If the numbers are the same it prints the value of the numbers as the largest value. the function prints the larger value.A(n) ________ database makes it possible to store information across millions of machines in hundreds of data centers around the globe, with special time-keeping tools to synchronize the data and ensure the data are always consistent. qizlet
Answer:
A distributed database makes it possible to store information across millions of machines in hundreds of data centers around the globe, with special time-keeping tools to synchronize the data and ensure the data are always consistent.
Explanation:
In distributed databases, a database can be opened, viewed modified or deleted on more than one places. This means distributed databases has a system that integrates the data being used at more than one location. These locations can either be under same network or entirely different network.
All the data is synchronized periodically in order to ensure that changes made at one place are reflected at all other locations.
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Which type of view is created from the following SQL statement? CREATE VIEW balancedue AS SELECT customer#, order#, SUM(quantity*retail) amtdue FROM customers NATURAL JOIN orders NATURAL JOIN orderitems NATURAL JOIN books GROUP BY customer#, order#;
Answer:
The correct answer to the following statement is a complex view.
Explanation:
Because complex view is the part of the view in which view can be created by one or more tables and in the following statement they are using the CREATE VIEW command for creating view and next to it they are using SELECT and Join command for the multiple views.
So, that's why the following statement is the complex view.
A 5.5 g sample of a substance contains only carbon and oxygen. Carbon makes up 35% of the mass of the substance. The rest is made of oxygen. You are asked to determine the mass of oxygen in the sample. Which of the following expressions demonstrates a mathematical procedure to solve this problem using the proper order of operations?
((100 - 35)/100) x 5.5 grams =
100 - 35/100 x 5.5 grams =
100 - (35/100) x 5.5 grams =
Recall that to calculate a percent of an amount in grams means you have to convert the percent to a number and multiply by the amount in grams. For example, 50% means 50 out of 100, or 50 hundredths. So 50% of 10 grams is 0.50 times 10 grams. You need to take 0.50 and multiply it by 10 grams to determine 50% of 10 grams is 5.0. (50% and 10 grams are examples and not numbers for this problem.)
Answer:
((100-35)/100) x 5.5grams=3.575grams of oxygen
Explanation:
Since ha sample contains 35% carbon which means (100-35)=65% is oxygen in the sample. In order to calculate the mass of oxygen in the sample we have to find the 65% of 5.5g which means we have to multiply 65/100=0.65 with 5.5g i.e 0.65*5.5. so the mathematical expression we use will be:
((100-35)/100) x 5.5grams=3.575grams of oxygen
Given this method comment, fill in the blank in the method implementation. /* Deposits money into the bank account amount: the amount to deposit */ public _____ deposit(double amount) { balance = balance + amount; }
Answer:
"void" is the correct answer for the given question.
Explanation:
In the function body the value of balance variable is not return that means we use void return type .The void return type is used when the function does not return any value .
If the function are int return type that means it return "integer value ".
if the function are double return type that means it return the "double value" .
The complete implementation of this method is
public void deposit(double amount) // function definition
{
balance = balance + amount; // statement
}
As a Web designer, you want to ensure that HTML elements will not overlap or lay against one another when users render your Web pages in a browser. Which of the following can you use to help you configure the space around each HTML element?
Answer:
The answer is "The concept of the CSS Box model ".
Explanation:
Cascading Style Sheets (CSS) is used for web design and formatting, the term box template or model is used. The CSS box model works as a container that covers all the HTML elements inside.
It includes many features, sides, margins, lining, and materials. The design and development of web pages is provided by the CSS box model. The framework can be used to modify and design various items.Bullets in a text box will do which of the following?
A) ensure you fill up the slide with text
B) help you present you data with concise statements
C) help you properly size your text
D) ensure you leave space for drawings
Answer:
Option B is the correct answer to this question.
Explanation:
Bullets play very important role in presenting the data with concise statements:
As the bullets make the statements more clear and effective.Bullets make the statements/data more easy,clear, and simple for the readers to understand.They make the document more appealing to the user or the reader and makes the document to be presented in a proper and specific order.Bullets make the writers to organise and emphasize their information quickly and effectively.Bullets make the text more beautiful,effective and easy to learn or understand.All other options are incorrect because they do not relate from this question.
This method is employed in order to rapidly change the locations of the website in order to ensure that no one site us used long enough to be isolated and shut down.
a. Fast-flux
b. Three-card monte
c. Bait n'switch
d. Botnet
Answer:
Fast-flux
Explanation:
The techniques that is used to shift the network without shutdown of website.
Which of the following are the dimensions of feasibility? Group of answer choices cost, schedule, technical, and organizational feasibility schedule, process, technical, and competitive feasibility technical, process, procedural, and operational feasibility operational, strategic, technical, and tactical feasibility planning, process, technical, and schedule feasibility.
Answer:
"cost, schedule, technical, and organizational feasibility schedule" is the correct option.
Explanation:
A technical feasibility is the study of the concerned about the specifying software and tools which satisfy the users' need. It is also the process of thinking for which business technologies are important to bring labours, transportation, and materials.
An organizational feasibility is the study of the information of the professional background and about the skills which are necessary for the contribution in the business.
The dimensions of feasibility are cost, schedule, technical, and organizational feasibility, critical for assessing whether a project is viable regarding finances, time, technology, and alignment with organizational goals.
Explanation:The dimensions of feasibility include cost, schedule, technical, and organizational feasibility. These dimensions are crucial for evaluating whether a project should proceed. Cost feasibility involves analyzing whether the financial resources available can cover the project expenses, while schedule feasibility assesses if the project can be completed within the desired timeframe. Technical feasibility examines whether the necessary technology and expertise are available to meet the project's requirements. Finally, organizational feasibility evaluates if the project aligns with the organization's strategic goals and capabilities.
Adam is evaluating the security of a web server before it goes live. He believes that an issue in the code allows an SQL injection attack against the server. What term describes the issue that Adam discovered?
A. threat
b. vulnerability
c. risk
d. impact
The term vulnerability describes the issue that Adam discovered.
b. vulnerability
Explanation:
SQL injection attack is an attack in which an external party can execute SQL commands on the database that serves as a back-end for a particular website. The SQL commands can be used to modify the contents of the website, modify the records, delete the records, and retrieve confidential information as well.
As Adam believes that the code has an issue that allows a SQL injection attack, the term that best describes the issue that he discovered is vulnerability. The website is vulnerable since the code does not have a proper procedure to tackle a situation of SQL injection attack.
When connecting a trunk link between two switches, it is important to configure the allowed VLANs correctly on either end. If this is not done correctly _________ will occur.
Answer: A VLAN mismatch
Explanation:
The VLAN mismatch is the process when the both ends of the truck line are not connected correctly and properly between the two switches.
The configuration of the VLAN is done correctly as it is important to connecting the VLAN on either of the ends for avoiding the VLAN mismatch occurrence. By default the truck allow the VLAN 2094 for traversing the trunk by using the native VLAN in the form of VLAN 1.Therefore, VLAN mismatch is the correct answer.
On a compromised computer, you have found that a user without administrative privileges was able to perform a task limited to only administrative accounts. What type of exploit has occurred?
a. privilege escalation
b. DNS cache poisoning
c. man-in-the-middle
d. ARP poisoning
Answer:
a. privilege escalation
Explanation:
Privilege escalation is the act of exploiting a bug, design flaw or configuration oversight in an operating system or software application to gain elevated access to resources that are normally protected from an application or user.
Thus, if a user without administrative privileges was able to perform a task limited to only administrative accounts, this can be called as privilege escalation.
DNS cache poisoning is a type of attack that exploits vulnerabilities in the domain name system (DNS) to divert Internet traffic away from legitimate servers and towards fake ones.
A man-in-the-middle attack is an attack where the attacker secretly relays and possibly alters the communications between two parties who believe that they are directly communicating with each other.
ARP poisoning is a technique by which an attacker sends Address Resolution Protocol messages onto a local area network.
The exploit that occurred is a privilege escalation attack, allowing a non-administrative user to perform administrative tasks.Therefore the Correct Option Is a. privilege escalation.
The Correct Answer Is a. privilege escalation. This exploit allows a user to gain elevated access to resources that are typically restricted for higher-level accounts.
Here are definitions of the incorrect options:
DNS cache poisoning: This attack involves substituting addresses in the DNS cache so that the computer is redirected to another device.Man-in-the-middle: This is where the attacker intercepts communication between two parties and can modify or eavesdrop on the conversation.ARP poisoning: In this attack, falsified ARP messages are sent over the local network to link the attacker’s MAC address with the IP address of a victim, allowing unauthorized access.Which type of open source license ensures that the source code of a program is freely available while also allowing the original author of the source code some control over the changes they've made?
A) Freeware
B). GPL
C). Artistic
D). Shareware
Answer:
C). Artistic
Explanation:
A hardware compatibility list recommends striping with double parity as storage for an application. In a test environment, a technician realized that a different RAID level can be used to compensate for a limited number of available disks. Which of the following is the closest RAID level the technician should deploy while minimizing the number of disks and maintaining fault tolerance.
Answer:
RAID level 5 can be used to compensate a limited number of available disks.
Explanation:
There are two type of RAID
Software RAIDHardware RAIDSoftware RAID
deliver services form the host.
Hardware RAID
provides hardware services.
RAID has levels
0, 1, 5, 6, and 10
RAID 0, 1, and 5 work on both HDD and SSD media,
4 and 6 also work on both media.
RAID 0 :Striping
In this level minimum of two disks,RAID 0 split the file strip the data.Multiple hard drive are used to split the data.
RAID 1 : Mirroring
In this level Minimum two disk require and provide data tendency.
RAID 5 :Stripping with parity
Parity is a binary data.RAID system calculate the value which system used to recover the data.
Most RAID system with parity function store parity blocks.
RAID 5 combines the performance of RAID 0 with redundancy of RAID 1.
RAID 5 level should minimize the fault tolerance.
Routers: operate at the application layer operate only at the physical layer cannot connect two or more networks that use the same type of cable may also be called TCP/IP gateways operate only at the data link layer.
Answer:
The correct option to the following question is option (D) may also be called TCP/IP gateways.
Explanation:
Commonly, Internet Protocol routers are referred to as the internet gateways because between the networks the routers use an IP address for routing the packets.
In the TCP/IP structure, the router works at several layers and also the router can select their path for the flow of the data because they know where is the other routers.
__________ are the technically qualified individuals tasked to configure firewalls, deploy IDSs, implement security software, diagnose and troubleshoot problems, and coordinate with systems and network administrators to ensure that an organization's security technology is properly implemented.
Answer:
Security technician
Explanation:
A security technician is a person who takes care of the security of the network of the organization. Security technician makes sure that there are no vulnerabilities in the systems or organization network.
They also troubleshoot the problem causing any security threat to the system and provides information by collecting data and maintain computer security by filing the security forms.
What is the output of the following code? var x = ["a", "b", "c"]; x.push("d", "e"); x.pop(); x.pop(); a. x = ["a", "b", "d", "e"] b. x = ["d", "e"] c. x = ["a", "b", "c"] d. x = ["c", "d", "e"]
Answer:
The answer to this question is option "C".
Explanation:
The stack is part of the data structure. In this stack perform two operations that are "push and pop". The push function is used to push(insert) and pop function is used to pop(delete) elements on the stack. It follows the LIFO process that stands for last in first out.
In this code, firstly we insert three elements on the stack that is "a, b and c". Then, we insert two elements on the stack that is "d and e", in this element store in the upper part of the stack and then we call pop function two times. In first time, the call will remove elements e and the second time it will remove element d.That's why the answer is option "C".
What would be the results of the following code?final int SIZE = 25;int[] array1 = new int[SIZE];... // Code that will put values in array1int value = 0;for (int a = 0; a < array1.length; a++){value += array1[a];}a.value contains the highest value in array1b.value contains the lowest value in array1c.value contains the sum of all the values in array1d.This would cause the program to crash
Answer:
The correct option to this code is "a".
Explanation:
The given code contains the highest value in array1 because code will use variable value that adds all value of array1. and other options are not correct that can be described as:
In option, b The value variable, we add a number that's why it can not contain the lowest value.In option, c The value variable use for loop for add all array element not sum of values.In option, d There will no crash in program.
Given a char variable c that has already been declared, write some code that repeatedly reads a value from standard input into c until at last a 'Y' or 'y' or 'N' or 'n' has been entered.
Answer:
The code to this question as follows:
Code:
do{ //do-while loop
cin >> c; //input value from user.
}while (!(c == 'Y' || c == 'y' || c=='N' || c == 'n')); //check condition.
Explanation:
The description of the code as follows:
In this code, we use a do-while loop. It is an exit control loop. In the loop, we use the char variable that is "c" this variable is used for user input. End of the loop we define the condition that is variable c value is not equal to "y", "Y", "n" and "N". In the loop, we use OR operator that means if any of the above conditions is match it will terminate the loop.
Final answer:
A while loop can be used to repeatedly read a char variable from standard input until 'Y', 'y', 'N', or 'n' is entered, utilizing a do-while loop to check the condition after each input.
Explanation:
To repeatedly read a value into a char variable c until 'Y', 'y', 'N', or 'n' is entered, one could use a while loop in the following way:
#include
using namespace std;
do {
cin >> c;
} while (c != 'Y' && c != 'y' && c != 'N' && c != 'n');
This code snippet uses a do-while loop to ensure that the body is executed at least once before checking the condition. If the character entered is not 'Y', 'y', 'N', or 'n', it repeats the prompt, continuing to read the next standard input into variable c. When one of these specific characters is entered, the loop terminates.
The following code accomplishes which of the tasks written below? Assume list is an int array that stores positive int values only.int foo = list[0];for (int j =1 ; j < list.length; j++) if (list[j] > foo) foo = list[j];
Answer:
The code mention in question will find "Largest Number in list"
Explanation:
In first line of code
first element of array will be move in "foo" variable
then loop will start from 2nd value and ends at last value of array
in next step
2nd value of array compares with 1st value
If 2nd value is greater than 1st then greater value move into "foo" variable.
This process continues till the end of array.
after completion largest element of array will be present in "foo".
Which of the following JavaScript methods is used to define an object collection based on a CSS (Cascading Style Sheets) selector? a. object.style.property = ""value(selector)"" b. object.property = ""value(selector)"" c. document.getElementbyId(selector) d. document.querySelectorAll(selector)
Answer:
The answer is option d.
Explanation:
The 'querySelectorAll' function enables you to extract the list of items that fit the CSS selector you choose. It's just a way to find JavaScript components. It is very adaptable and enables you to search for tags, classes, IDs, combinations of parent/child, attributes, etc.
In other words, we can say that the querySelectorAll() method returns all the matches. and other options are not correct that can be described as follows:
In option a and b, the object is a collection of unordered properties, that can be changed in adding, deleting and read-only. The option a is an attribute, that is used in CSS and option b is used in JavaScript for the property name. In option c, It reverts the element with the fixed value, that has the ID attribute.A modem from which communications occur in discrete units, and in which the start of a unit is signaled by a start bit at the front, and a stop bit at the back signals the end of the unit.
Answer:
Asynchronous modem
Explanation:
In an asynchronous modem, data is transmitted in an infrequent stream of small packets, in which a start bit at the front signals the start of a unit, and the end of the unit is signaled by a stop bit at the back.
Identify a true statement of a JavaScript program in a web form.
a) JavaScript is a closed-source programming language, which provides tools and a programming environment for communicating the strategy and overall administration of distributed applications.
b) JavaScript is extracted by all layout engines in a similar way; as a consequence, this grounds consistency in terms of functionality and interface.
c) JavaScript is a bug-free Visual Basic scripting language, which is used only for networking applications.
d) JavaScript intercepts the content of the form before the browser attempts to contact the CGI script and report whether the data contained in the survey form has been correctly filled out or not.
Answer:
Option d): JavaScript intercepts the content of the form before the browser attempts to contact the CGI script and report whether the data contained in the survey form has been correctly filled out or not.
is the true statement.
Explanation:
Introduction to JavaScript:
JavaScript can be defined as the object-oriented programming language used specially for creating effective and interactive styles for web, it can update and modify the languages like HTML and CSS.
The data can be validated, calculated and manipulated using JavaScript.
JavaScript is a scripting language from the client-side. By this we mean that the source code of JavaScript is processed by the browser of client instead of the web Server.
From the server-side of scripting language, JavaScript can be added anywhere within the HTML of a webpage.
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