Answer:
A. 2
B. -17
C. Infinity
D. -3.125
Explanation:
Given the following block code: try{ list retrievedrecords = [select id from account where website = null]; }catch(exception e){ //manage exception logic } what should a developer do to ensure the code execution is disrupted if the retrievedrecordslist remains empty after the soql query?.
Answer:
Check the state of retrieved records variable and use system.assert false if the variable is empty.
A developer should use the system and check the status of the variable for the retrieved records. If the variable is empty, assert false.
What is Remote Code execution?A cyberattack known as remote code execution allows an attacker to remotely control a target's computer and execute commands on it. No matter where the device is physically located, remote code executions (RCEs) can happen. They are typically caused by harmful software that the host has downloaded. Remote Code Evaluation (RCE) is another name for Remote Code Execution (RCE).
A vast class of cyberattack methods falls under the term "remote control execution." It enables a threat actor to run this remote code on a target computer over a local area network, wide area network, or the internet (LAN).
An RCE attack sequence is easy to carry out. Code is frequently introduced using the targeted application's language.
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You are an IT technician for your company. Rachel, who works at the receptionist desk, thinks her Windows 10 machine is running slowly today and calls you to see if you can speed it up.
None of the other employees have called regarding any related issues, so you suspect it is an issue with Rachel's computer, perhaps a malfunctioning application. To help troubleshoot Rachel's computer, you run Task Manager.
Which of the following tabs would be the MOST helpful for getting an overall view of how her computer is running? (Select TWO).
__Processes
__Services
__Details
__App history
__Performance
__Users
To help troubleshoot Rachel's computer, you run Task Manager.
The Processes and Performance tabs would be the MOST helpful for getting an overall view of how her computer is running.
What do you mean by the Task Manager?
You can view the programs, processes, and services that are active on your computer with Task Manager. When an application is not responding or performing poorly, you can close it using Task Manager.
Along with information on computer performance, network activity, and memory usage, the Task Manager also provides details on currently running programs, services, and processes. Users can terminate programs, change priorities, and even log off of Windows.
A task management tool is used by an individual, team, or organization to organize and prioritize related activities in order to successfully execute projects.
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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?
Implementing NAT is the best way to accomplish this. A core switch is also thought of as a backbone component that is essential to a network's efficient operation.
To connect to servers, your Internet service provider (ISP), via a router, and to aggregate all switches, you can use it as the gateway to a wide area network (WAN) or the Internet. By caching Web pages, a proxy server can improve network performance by decreasing the time clients must wait to view Web pages. It's common practice to cache and filter content using a proxy server. Websites that are often visited are cached by a proxy server.
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Which method in the interface for a dictionary collection returns an iterator on the key/value pairs in the dictionary?
a. entries()
b. pairs()
c keys()
d. values()
The method in the interface for a dictionary collection returns an iterator on the key/value pairs in the dictionary is the Keys () method.
The need to offer extra functionality in addition to the norm is a typical requirement for a bespoke vocabulary. Consider the scenario where you want to develop a class that functions like a dictionary and offers methods for locating the key that corresponds to a specific target value. You require a method that returns the initial key corresponding to the desired value. A process that returns an iterator over those keys that map to identical values is also something you desire.
Here is an example of how this unique dictionary might be used:
# value_dict.py
class ValueDict(dict):
def key_of(self, value):
for k, v in self.items():
if v == value:
return k
raise ValueError(value)
def keys_of(self, value):
for k, v in self.items():
if v == value:
yield k
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which data entry application control would detect and prevent entry of alphabetic characters as the price of an inventory item?
A data entry application control that would detect and prevent entry of alphabetic characters as the price of an inventory item is a validation rule. Validation rules are used to ensure that data is entered into a form or database correctly.
Which data entry application control would detect and prevent entry of alphabetic characters as the price of an inventory item?Validation rules are a key data entry application control that can be used to ensure the accuracy of the data being entered. By requiring the entry of only numeric characters for the price field, we can be sure that the correct type of data is being entered. This prevents the entry of any alphabetic characters, which could lead to incorrect or invalid data. Validation rules can also be used to ensure that the data entered is within a certain range (e.g. prices can only be within a certain range). This further helps to ensure that the data entered is valid and accurate.
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lab simulation 8-1: create a new namespace and configure branchecache dfs allows you to group shares from different servers into a single logical share called what
DFS allows users to group shares from the different servers into a single logical share called 'Namespace'.
DFS (Distributed File System) Namespaces is a role service in Windows Server that permits you to group shared folders placed on different servers into one or more logically structured namespaces. DFS Namespace makes it possible to provide users with a virtual view of shared folders, where a single path leads to files placed on multiple servers. There are no additional software or hardware requirements for using DFS Namespaces.
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You are conducting a wireless penetration test against an organization. You have identified that they are using WEP encryption on their wireless access points. You are impatient and do not want to wait to collect enough packets to find a repeated initialization vector. You decide to extract part of the key material from one of the packets and use it to send an ARP request to the AP. Which of the following exploits did you utilize in this attack?
A. Fragmentation attack
B. Deauthentication attack
C. Karma attack
D. Downgrade attack
Option B is correct. A wireless penetration test differs slightly from other penetration tests in that it incorporates auditing and tactical testing components.
As a result, it may be challenging to determine what is covered by a wireless penetration test. In this article, we'll examine the three primary components of a wireless penetration test: wireless survey, unauthenticated testing, and authenticated testing. You will have a clearer understanding of what wireless penetration testing entails and what to anticipate when the engineer visits your location to test your wireless networks after reading this. The engineer will conduct a wireless survey while moving around the office and its surroundings, collecting data on all wireless networks that are accessible using specialized antennas.
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if you cannot read the words on a slide in which a picture has been inserted as a background, what should you adjust?
if you cannot read the words on a slide in which a picture has been inserted as a background, you need to adjust the transparency.
What is a slide?
A slide in the digital age most often refers to a single page created with a presentation application. With a document markup language, a slide may likewise be produced. A single image, for instance, is regarded as a slide when viewing a slideshow of ten images.
A slide in a presentation or software program like Microsoft PowerPoint is a page of text, graphics, or animations. Four slides are displayed, for instance, in the slide layout on the right.
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What is the correct port number that should be used with the winscp or cyberduck secure file transfer program?.
Port 22 is the right one to use for Secure File Transfer Protocol (SFTP).
How does protocol work?
A protocol is a collection of instructions for exchanging data. Each step and process of communication between a number of computers has a set of rules that apply to it. For networks to transport data successfully, they must abide by certain guidelines. Protocols puts out the rules for communication and give specifics on the steps taken during data transmission. Multiple protocols may run concurrently on a single process. A protocol family is developed as a result of this protocol coordination.
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what attribute do you add to the element to access the cgi script at www.example/cgi-bin/registration?
cgi script acts as a conduit between software that creates online content and the HTTP server
How can we insert a CGI program in HTML file?It isn't feasible. CGI is a technique for launching applications or scripts from the server. Special documents like PHP, ASP, and JSP are processed by an interpreter on the server before the contained code is executed. It is unable to execute HTML pages, hence it is not feasible.Common Gateway Interface, or CGI, acts as a conduit between software that creates online content and the HTTP server. CGI scripts are the more common name for these programs. The language used to write them is scripting. Such a scripting language is offered by the Network Component.To learn more about Common Gateway Interface refer,
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The adoption of ________ has been an important factor in the development of the internet of things.
Since files are now easier to find and access, the same business may provide better customer service while spending less on storage.
What role of adoption in development of the internet?There are numerous stages to the process, which are typically characterized by the demographics of those that employ the technology. As an illustration, innovators are the very first people to create a technology.
Therefore, The adoption of IPv1 has been an important factor in the development of the internet of things.
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when using the function btree remove key(node, key index) to remove a key from a 2-3-4 tree node, which is not a valid value for keyindex?
When using the function btree remove key(node, key index) to remove a key from a 2-3-4 tree node, 0 isn't a valid keyIndex. So, option D is the correct option.
What is keyindex?There are a maximum of four WEP keys that can be set up on an access point (wireless router). The network, however, only employs one key at a time. Keyindex refers to the keyindex of a particular key, which is one of the keys' numbers. If the access point has multiple WEP keys configured, every wireless device on the network must be set to use the same keyindex.
Only when keyType is networkKey does keyIndex come into play. As long as sharedKey is present, the default value is 0. A number between 0 and 3 inclusive must be entered.
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_________ is a system in which any object, animate or inanimate, has a unique identity and is able to send and receive data over the internet without human interaction.
Answer: the ioT
Explanation:
TRUE/FALSE. ideally, when users receive training about fundamentals of network use, they become confident about what they need to do when working on a network.
Answer: true
Explanation:
what is a vpn? multiple choice a direct network provider using a company server a direct p2p that creates an open access community for a company a direct url that creates a private tunnel for a company a direct private network that creates a ""private tunnel"" within the internet to connect to the corporate server
A direct private network that creates a "private tunnel" within the Internet to connect to the corporate server. Thus, the correct option is option D.
What is direct private network?A virtual private network (VPN) extends a private network over a public network, like the Internet. Users are able to send and receive data over shared or open networks just like they would if their computing devices were directly connected to the private network, taking advantage of all of the private network's features, security, and management guidelines.
Through the use of specialized connections, virtual tunneling protocols, or traffic encryption, a VPN is created by creating a virtual point-to-point connection. Wide area networks (WANs) and VPNs both span the Internet (WAN). The same as resources accessible within the private network, users can access resources within the extended network in the same way.
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which kind of virus operates only in memory and usually exploits a trusted application like powershell to circumvent traditional endpoint security solutions?
File less virus operates only in memory and usually exploits a trusted application like PowerShell to circumvent traditional endpoint security solutions
What is meant by File less virus ?A sort of harmful behaviour known as "fileless malware" use native, lawful tools that are already present in a system to carry out a cyberattack. File less malware is more difficult to detect than regular malware since it doesn't require an attacker to install any code on a target's system.
Malicious software that leverages trustworthy apps to infect a computer is known as file less malware. It is difficult to detect and get rid of because it does not rely on files and leaves no traces.
Malicious software known as "file less malware" does not use virus-filled files to infect a host. Instead, it uses malicious code to run in resident memory by taking advantage of programmes that are frequently used for legal and acceptable activity.
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Using the environmental data for each of the provinces in Canada, and weighting each piece of data by the number of cities in the province, calculate the mean temperature and mean precipitation for all of Canada for annual and each month.Environmental - v - assignment.xlsxIn each case, write a program using Python libraries of PySpark. It would make sense to treat the data as manipulation of matrices. Do not assume that the input data is all on the same node.Your submission should include the Spark program, and the answers (probably in a matrix of the same form as the input matrices, but without Rows for High, Low Temperatures, and columns for # of cities, and years).
The Python programming language can be used to write code that uses the environmental data for each province in Canada and weights each piece of information in accordance with the number of cities.
The definition of the environment is the whole of all realistic, non-living atmospheric conditions and their effects on human life. Water, land, sunshine, rocks, and air are examples of non-living or abiotic weather conditions, whereas all biotic or life elements are animals, plants, forests, fisheries, and birds.
Average annual temperature "Mean," "df," and "the annual temperature column" (). display() the average monthly temperature Means in pdf. agg. display() annual average of precipitation for "Name of the Month Temperature Column" Average monthly precipitation in pdf. agg. display(), "Name of the annual precipitation _column": In PDF. agg. display, "name of the month precipitation _column": "mean" ()
Therefore, each Canadian province's environmental data.
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TRUE/FALSE address resolution protocol (arp) cannot be used to resolve the address of another computer on a remote network.
Answer: true
Explanation:
What steps would you take if you wanted to adjust the outline style of a rectangle shape that has already been inserted into your worksheet?.
The following is required to adjust the outline style of a rectangle shape that has already been inserted into your worksheet:
First, Click the shape. Now, Click (Drawing Tools) Format then at last, In the Shape Styles group, select a different outline.
What is worksheet in Excel?
In Excel documents, a collection of cells arranged in columns and rows is referred to as a worksheet.
It is the workspace where you enter data. With 1048576 rows and 16384 columns, each worksheet serves as a huge table for organizing data.
The majority of worksheets in a workbook have related information, but only one is open at any given time.
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Which of the following modules provides a function for formatting currency in the US, UK, or parts of Europe? a. locale b. decimal c. math d. currencyl
Locale modules provides a function for formatting currency in the US, UK, or parts of Europe
Locale ModuleThe locale module opens access to databases and local POSIX functionality. POSIX local mechanisms allow programmers to address specific cultural issues within an application without needing to know all the details of the country in which the software is running. This Locale module is related to the programming language that is widely used by developers recently, namely Python.
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assume your quiz scores are stored as a dictionary. each entry of the dictionary consists of a name and an integer score as follows: {'alice': 80, 'bob': 85, 'carol': 83} write a function called getscores that takes such a dictionary as a parameter and returns a list of student scores without student names. [80, 85, 83] note: use the values() method.
This test grade calculator is an absolute must if you're seeking for a tool that can assist you in creating a grading system.
What is quiz score?This tool, which is also known as a test score calculator or teacher grader, instantly determines the grade and percentage based on the quantity of points and the right (or incorrect) answers.
Additionally, you can set your own grading scale in place of the standard one.
Box by box increments allow you to alter the appearance of the resulting table. Since the default value is the student can only receive integer points. Simply divide the earned points by the total points allowed to arrive at the percentile test score.
Therefore, This test grade calculator is an absolute must if you're seeking for a tool that can assist you in creating a grading system.
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what two simple malware coding implementations for reverse shells on windows using cmd.exe do attackers employ?
Answer:
Basic and multithreaded
this very slow wired technology uses the phone line; an inexpensive isp subscription should be the only additional cost, but you cannot connect to the internet and use your phone on the same line simultaneously.
Dial-up The phone line is used for the very slow internet connection; the only additional expense ought to be a cheap isp subscription. The phone and internet cannot be used on the same line at the same time.
The internet is what?
The Internet is a system of worldwide linked computer networks that communicate with one another using the TCP/IP protocol suite. A wide range of electronic, electronic, and optical network technology are used to connect private, governmental, academic, business, or government networks with local to global reach. The World Wide Web (WWW), which is made up of linked web documents and applications, as well as electronic mail, phone service, and document sharing, are just a few of the numerous services and information resources available on the Internet.
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how are the peripheral values of the output image generated when the kernel does not fully overlap the corresponding input image values?
The output image is created by duplicating the border values in the input picture or padding it with additional pixels, such 0s.
What is a "pixel"?
A pixel, also known as a picture element or px, is the smallest accessible component in a raster image or the smallest accessible element in an all-points-addressable display device in digital imaging. As a final result, it is also smallest programmable element of a picture displayed on the screen. Every pixel serves as a sample of the original image, and more samples usually result in more accurate reproductions of the original.
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if a polygon layer is spatially joined to a line layer, with the lines as the target layer, what will the feature geometry of the output layer be?
If a polygon layer is spatially joined to a line layer, with the lines as the target layer, the thing that will be the feature geometry of the output layer be is Line.
What is a layer of polygons?Polygon was developed as a Layer-2 scaling solution. It satisfies the various demands of developers by giving them the tools they need to build scalable decentralized applications (dApps) that put performance, user experience (UX), and security first.
Note that in the context of the question above, the features of the destination layer are kept in the output, and the attribute data from the source layer is added.
Hence, The features that make up the output feature class are based on the destination feature class.
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for the network below, a sends a packet to b. when the frame is transmitted between a and r, what is the destination mac address?
The Mac Address E6-E9-00-17-BB-4B.
What is Address Resolution Protocol?
An address resolution protocol is a communication protocol used to determine link-layer addresses. A MAC address associated with a particular Internet layer address (usually an IPv4 address). This mapping is a key feature of the Internet protocol suite.
What is the use of Address Resolution Protocol?
Address Resolution Protocol is a Layer 2 protocol used to map MAC addresses to IP addresses. All hosts on the network are identified by an IP address, but NICs do not have IP addresses, they have MAC addresses.
Types of Address Resolution Protocol(ARP)?
Proxy Address Resolution ProtocolReverse Address Resolution ProtocolInverse Address Resolution ProtocolGratuitous Address Resolution ProtocolTo learn more about address resolution protocol visit the link below
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bonus question 1: how can we rewrite the code (not just reordering) to reduce the effective cycles per instruction?
Using a loop rather of writing individual lines of code for each instruction is one technique to lower the effective cycles per instruction.
Loop, what is it?
A loop is a set of commands that are repeatedly carried out until a specific condition is met in computer programming. Typically, a certain action is taken, such as receiving and modifying a piece of data, and then a condition is verified, such as determining whether such a counter has reached a predetermined value. If not, the following instruction in the sequence directs the computer to go back to the first command in the series and repeat it.
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A beam of electrons accelerated in an electric field is passing through two slits separated by a very small distance d and then hits a screen that glows when an electron hits it. The potential difference is v. Assume the distance from the slits to the screen is l.
The double-slit experiment is a display in modern physics that light and matter can demonstrate characteristics of both classically defined waves and particles; additionally, it demonstrates the fundamentally probabilistic nature of quantum mechanical phenomena.
what is double-slit experiment?
Thomas Young first performed this type of experiment in 1802, as a demonstration of visible light's wave behavior.
Light was thought to be made up of either waves or particles at the time.
If the viewing distance is greater than the slit separation (the far field), the phase difference can be calculated using the geometry. The path difference between two waves traveling at an angle is calculated as follows:
[tex]dsin\theta = d\theta[/tex]
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Create a class called Complex for performing arithmetic with complex numbers.
Write a program to test your class. Complex numbers have the form
realPart + imaginaryPart * i
Use double variables to represent the private data of the class. Provide a constructor that enables an object of this class to constructor should contain default values in case no initializers are provided. Provide public member functions that perform the following tasks:initialized when it's declared. The
1. a) Adding two Complex numbers: The real parts are added together and the imaginary parts are added together.
2. b) Subtracting two Complex numbers: The real part of the right operand is subtracted from the real part of the left operand, and the imaginary part of the right operand is subtracted from the imaginary part of the left operand.
3. c) Printing Complex numbers in the form (a, b), where a is the real part and b is the imaginary part.
Scalars in MATALB can be multiplied, divided, added to, subtracted from, multiplied by, and have exponents applied to them.
These operators can be used to arrange calculations involving vectors and matrices in a straightforward manner. For instance, the product of the two matrices A and B is written as A.
#include <iostream>
using namespace std;
//**********COMPLEX CLASS************************
class Complex{
private:
double real,imag;
public:
Complex(){
real=imag=0;
}
///////////////////////////////////////////////////
Complex(double r){
real=r;
imag=0;
}
///////////////////////////////////////////////////
Complex(double r, double i){
real=r;
imag=i;
}
///////////////////////////////////////////////////
Complex(Complex &obj){
real=obj.real;
imag=obj.imag;
}
///////////////////////////////////////////////////
Complex add(Complex c){
Complex Add;
Add.real = real + c.real;
Add.imag = imag + c.imag;
return Add;
}
///////////////////////////////////////////////////
Complex sub(Complex c){
Complex Sub;
Sub.real = real - c.real;
Sub.imag = imag - c.imag;
return Sub;
}
///////////////////////////////////////////////////
Complex mult(Complex c){
Complex Mult;
Mult.real = real*c.real - imag*c.imag;
Mult.imag = real*c.imag - c.real*imag;
return Mult;
}
///////////////////////////////////////////////////
Complex div(Complex c){
Complex Div;
Div.real = (real*c.real + imag*c.imag)/(c.real*c.real + c.imag*c.imag);
Div.imag = (imag*c.real + real*c.imag)/(c.real*c.real + c.imag*c.imag);
return Div;
}
///////////////////////////////////////////////////
void print(){
cout<<real<<"+"<<imag<<"i"<<endl<<endl;
}
///////////////////////////////////////////////////
double getReal() const{
return real;
}
///////////////////////////////////////////////////
double getImag() const{
return imag;
}
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your company uses windows autopilot to configure the computer settings of computers issued to users. a user named user1 has a computer named computer1 that runs windows 10. user1 leaves the company. you plan to transfer the computer to a user named user2. you need to ensure that when user2 first starts the computer, user2 is prompted to select the language setting and to agree to the license agreement. solution: you create a new windows autopilot user-driven deployment profile. does this meet the goal?
To set up the Autopilot devices, utilize the deployment profiles for Autopilot.
Explain about the Autopilot devices?Windows Autopilot is a group of tools for pre-configuring and configuring new hardware so that it is ready for use. To deploy Windows PCs or HoloLens 2 devices, utilize Windows Autopilot.
There are four varieties: reset, self-deploying, white glove, and user-driven. AAD enrollment and Intune enrollment are required for the deployment of Autopilot. a checklist of settings that must be applied to the designated devices.
One of the features in Microsoft Intune, Windows Autopilot, gives you improved setup and pre-configuration capabilities for new devices, preparing them for productive use. Devices can also be reset, repurposed, and recovered using Windows. The autopilot sensing components are an altitude control, an attitude and directional gyro, and a turn coordinator.
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