The following set R does not define an equivalence relation on the set {1, 2, 3, 5} because R is not transitive.
What is equivalence relation?An equivalence relation in mathematics is a binary relation that is transitive, symmetric, and reflexive. One typical illustration of an equivalence relation is the relation of equipollence between line segments in geometry.
The underlying set is divided into disjoint equivalence classes by each equivalence relation. If and only if two elements of the given set are members of the same equivalence class, they are equivalent to one another.
If and only if a relation R on a set A is reflexive, symmetric, and transitive, then it qualifies as an equivalence relation. On the set, the equivalence relation is a relationship that is typically denoted by the symbol "∼".
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match each ad fs authentication factor on the left with the appropriate description on the right. each authentication factor may be used once, more than once, or not at all.
1. A secret string of characters- password 2. A biometric authentication using fingerprint scanning, 3. A smart card, a tangible token 4. Multi-Factor Authentication - Authentication needs to be verified by many factors.
Describe biometrics.
Biometrics are measurements of the body and computations of human traits. In computer science, access control and identity is achieved by biometric security, also known as real authentication. It is also used to locate individuals in groups that are being monitored. The distinct, quantifiable traits that are used to identify and classify people are called biometric identifiers. Biological traits connected to a person's physical attributes, such as body form, are frequently characterized as biometric identifiers. Examples include fingerprinting, veins in the palms, face recognition, DNA, handprints, hand geometry, iris identification, retina, and odor/scent.
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to assign a value to a global variable in a function, the global variable must be first declared in the function. T/F
False. Value can to assigned to a global variable in the function even if we dont declare it before.
How assigning the value of global variable is possible?Any variable that has to be used inside the function but is declared outside the function is referred to as a global variable. When you need to declare a global variable inside of a function, you use the word global. Normal variables only have a scope that extends to the function's conclusion when they are declared inside.
Utilize the global keyword when declaring the variable if you wish to use it outside of the function as well.
In JavaScript, there are two scopes: local and global. When a variable is assigned directly without being declared, it becomes a global property of the window object.
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Which of the following blocks would most likely be used to create a string constant from scanned code?
Question 15 options:
{ append_scan(yytext); return TOKEN_STRING; }
{ return TOKEN_STRING; }
{ append_scan(yytext); return TOKEN_STRING; }
{ $$ = createLiteral(scanned_text); }
The blocks that would most likely be used to create a string constant from scanned code is { append_scan(yytext); return TOKEN_STRING; }. The correct option is c.
What is scanned code?Code scanning makes it possible to find vulnerabilities and fix them before they are released into production, removing the cybersecurity risks they present.
When scanning a string, the literal "EOL" means "end of the line." When Python encounters an EOL error, it means that it has reached the end of a line in a string. You might have done this by forgetting the closing quotes or by trying to make a string span more than one line. Single or double quotes around strings.
Therefore, the correct option is c, { append_scan(yytext); return TOKEN_STRING; }.
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Suppose that move is a member function of the class vehicleType. Which of the following statements declare move to be a pure virtual function.
(i) virtual void move(double a, double b) const = 0;
(ii) virtual void move(double a, double b) 0 = const;
A) Only (ii) B) Only (i) C) Both (i) and (ii) D) None of these.
Let's assume that move is a function of the vehicleType class. virtual void move(double a, double b) const = 0.
What accomplishes a class method?A class method is a method that is tied to the class itself, not to its objects. Because the class parameter refers to the class rather than the object instance, they have access to the class's state. It can alter a class state so that it would affect every instance of the class.
What are the features and functions of a class?It is used to describe and comprehend objects in more detail than just their label through the usage of feature, function, and class.
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which of the following statements is true of firewalls? answer unselected they are placed all over the internet. unselected they are frequently used to prevent unauthorized internet users from accessing private networks connected to the internet. unselected they completely prevent network penetration by outsiders and therefore should be viewed as the sole element required for the overall security plan. unselected they are implemented in hardware but not software.
Answer:
They are used to prevent unauthorized internet users accessing private networks.
Explanation:
which of the following would be considered an input device? cpu cpu microsoft word microsoft word keyboard keyboard printer
A keyboard is regarded as an input device. Examples of input devices include scanners, mice, joysticks, and digital cameras.
Which of the following statements—that an output device provides information to the computer and an input device receives it—is true?A computer's output device transmits information to an input device, and the other way around. The computer provides information to an input device, which receives it, and the other way around. Both assertions are false.
What kind of hardware is used in computers?Computer hardware refers to the actual physical components of a computer, such as the chassis, CPU, RAM, monitor, mouse, keyboard, computer data storage, graphics card, sound card, and speakers.
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in this lab, your task is to discover whether arp poisoning is taking place as follows: use wireshark to capture packets on the enp2s0 interface for five seconds. analyze the wireshark packets to determine whether arp poisoning is taking place. use the 192.168.0.2 ip address to help make your determination. answer the questions.
Open Wireshark and choose enp2so from the Capture menu. To start the capture, select Blue fin. Choose the red box to stop after 5 seconds. Enter arp to display those packets in the Apply a display filter box. Look for lines in the Info column that contain the IP 192.168.0.2.
What is meant by which of the following when an attacker sends phony packets to link their MAC address?An attack known as ARP spoofing involves a malicious actor sending forged ARP (Address Resolution Protocol) packets across a local area network.
To find duplicate IP address traffic, which of the following wireshark filters is used?For Wireshark to only show duplicate IP information frames, use the arp. duplicate-address-frame filter.
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___________ is when network managers deal with network breakdowns and immediate problems, instead of performing tasks according to a well laid out plan.
a. Panicking
b. Multiplexing
c. Multitasking
d. Firefighting
e. Fireflying
Instead of carrying out activities in accordance with a well-thought-out strategy, network administrators engage in "firefighting," where they address urgent issues and network outages.
What exactly does "network" mean?A number of computers connected together to share data (such printers and CDs), online cloud, or enable electronic conversations make up a network. A network's connections to its computers can be made through cables, phone lines, radio frequencies, spacecraft, or infrared laser beams.
Why is a network crucial?Simply simply, networking entails establishing relationships with other business people. Always consider the benefits to both sides when networking. A important good, higher exposure, a larger support network, enhanced company growth, and far more meaningful relationships are a few benefits of networking.
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the policies, procedures, and awareness layer of the security model includes which of the following? (select two.)
The policies, practices, and understanding element of the security model is comprised of boarding and user education.
What makes security crucial?They keep discipline in huge gatherings and reduce the possibility of riots, mob fighting, or inebriated and disorderly behavior. Security can facilitate the organization and management of circumstances like big crowds at events, job terminations, or to foster a general atmosphere of safety and order in commercial facilities. A security, in its most basic form, is a store of wealth or instrument with value that may be purchased, sold, or exchanged.
Briefing:The Guidelines, Methods, and Consciousness layer also includes steps for employee onboarding and offboarding.
Computer cages, accelerometers, and environmental rules are all part of the physical layer.
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Which of the following activities is least likely to result in a segmentation fault?
Question 19 options:
Removing an element from the middle of a linked list without fixing the pointers afterwards
Growing the stack too large, such as with an unbounded recursive function
Trying to write into protected space, such as modifying the code segment of the program
Accessing a memory address outside its boundaries
From the following activities, the one that is least likely to result in a segmentation fault is: "Removing an element from the middle of a linked list without fixing the pointers afterwards" (Option A)
What is a segmentation fault?A segmentation fault or accessibility violation is a fault, or failure condition, reported by memory-protected hardware that alerts an operating system that software has attempted to access a restricted portion of memory. This is a type of generic protection fault on ordinary x86 machines.
Check whether your compiler or library can be made to check limits on I at least in debug mode, to remedy a segmentation error. Buffer overruns that write trash over excellent pointers can trigger segmentation faults. These actions will significantly minimize the chance of segmentation faults and other memory issues.
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To select adjacent worksheet tabs, click the first tab, press down and hold down this key, and then click the last tab.Shift
To select the adjacent worksheet tabs, click the first tab, press down and hold down the shift key and then click the last tab.
What is Microsoft Word?Microsoft Word is a word processor that may be used to create papers, letters, reports, and other types of writing of a professional calibre. It includes sophisticated capabilities that give you the best formatting and editing options for your files and projects.
What are examples of MS Word?Application software that enables you to create, edit, and save any documents is an example of Microsoft Word. It was first developed by software engineers Richard Brodie and Charles Simoyi in 1983 and is now owned by Microsoft.
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drakee is in a meeting where enterprise systems on the cloud are being discussed, along with the advantages and disadvantages of leveraging cloud infrastructure. of the following, which is not true as it relates to cloud providers and enterprise systems? choose the best answer from the options that are available.
More storage, which is untrue in terms of corporate systems and cloud providers.
What is a trademark of Enterprise?Enterprise is now the major supplier of mobility solutions because to our extensive network. Along with automobile sales and car sharing, we also rent out trucks and cars. We have more than 8,000 sites globally, so we are always available. Due to a coronavirus epidemic and the chip scarcity, there is a strong demand for rental cars but a limited supply.
Is Hertz or Enterprise less expensive?We compared many quotes and, on the whole, discovered that Enterprise was more pricey than Hertz. Prices for prepaid and cash at pickup choices ranged from $70 to as much as $200.
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The complete question is-
Drakee is in a meeting where enterprise systems on the cloud are being discussed, along with the advantages and disadvantages of leveraging cloud infrastructure. Of the following, which is not true as it relates to cloud providers and enterprise systems? Choose the best answer from the options that are available.
Group of answer choices
Increased storage
Automation of updates
Increased mobility
Flexibility with customization
create a view called IBM_InvoiceData that will retrieve columns and rows from the Invoices table for the vendor named IBM.
Rewards systems that reinforce the core values of the organization and contribute to organizational cohesiveness are the least effective type. T/F
False: The least successful form of rewards systems are those that promote organizational cohesion and reaffirm the essential values of the organization.
How does reinforcement work?
Reinforcement is a technique used in behavioral psychology to strengthen an individual's future behavior if that behavior is preceded by a certain form an important. This strengthening effect may be quantified as increased behavior (e.g., drawing a lever more frequently), increased length (example - pushing a lever for an prolonged period of time), increased magnitude (e.g., pulling a lever more firmly), or reduced latency (example - pulling a lever more quickly than following the antecedent stimulus). Self-awareness, self-reflection, and self-regulation are the three key principles of the soul paradigm of human nature. Historically, incentives have correlated with self-regulation.
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Two .o files have been linked together with the command line ld -o p main.o weight_sum.o. Consider the following statements:
(i) There are no more undefined symbols.
(ii) The file must be dynamically linked
(iii) The file is a relocatable object file.
(iv) The file is an executable object file.
(v) There might be one undefined symbol.
(vi) The .bss section consumes no file space.
Which of these statements are correct?
Select one:
a. Only (i) and (iv) are correct (this is not correct)
b. Only (i), (iv) and (vi) are correct (updating on my own -- this is the correct answer)
c. Only (ii) is correct
d. Only (i) and (iii) are correct
e. Only (ii) and (v) are correct
f. None of the above is correct
Only (i), (iv) and (vi) are correct, since all files are given and are connected with executables.
What is executable files?An executable file is a file that can be used by a computer to carry out different tasks or operations. An executable file, in contrast to a data file, has been compiled and cannot be read. .BAT,.COM,.EXE, and.BIN are examples of common executable files on an IBM compatible computer.
The.DMG and.APP files can be executed on Apple Mac computers running macOS. Other executable files might also exist, depending on the operating system and its configuration.
You can run our download.exe file on your computer as an example test executable. Congratulations! You've successfully downloaded an executable programme file from the Computer Hope website, says the executable file that displays this message.
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The ____ command saves your work, turns off the computer fans and hard disk, and then places the computer in a lower-power state. shut down.
The sleep command stores your work, disables the hard drive and computer fans, and then switches the computer to a lower-power mode. closing down.
What is Sleep mode?Electronic devices like computers, televisions, and remote control devices can operate in a low power mode called sleep mode (or suspend to RAM). These modes allow users to resume operations without having to issue new commands or wait for a machine to reboot, and they significantly reduce electrical consumption compared to leaving a device fully on.The computer goes into a lower-power state when the sleep command caches your work, turns off the hard disk and computer fans. Many gadgets use an LED power light that pulses or is red to indicate this power mode.In order to keep the RAM running and be ready to respond to a wake-up event, a computer needs to use some energy even when it is dormant. In several nations, standby power for a sleeping computer is regulated. For instance, the One Watt Initiative in the United States places restrictions on this power.Hence, The sleep command stores your work, disables the hard drive and computer fans, and then switches the computer to a lower-power mode. closing down.
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44.7.1: unit testing. add two more statements to main() to test inputs 3 and -1. use print statements similar to the existing one (don't use assert).
To add two more statements to main() to test inputs 3 and -1, check the given code.
What is statements?A list of directives for a computer to follow constitutes a computer programme. These instructions for programming are referred to as statements in a programming language.
The parts of programmes called C++ statements govern the order and flow of execution of other programmes. Statements may either be one line of code with a semicolon ; at the end or a block of code enclosed in curly braces.
There are several different types of statement in C++.
Labeled statementsExpression statementsCompound statementsSelection statementsIteration statementsJump statementsTry-Catch blocksDeclaration statements//CPDE//
cout << "3,
expecting 27,
got: " << CubeNum(3) << endl;
cout << "-1,
expecting -1,
got: " << CubeNum(-1) << endl;
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design a 32 bit counter that adds 4 at each clock edge the counter has reset and clock inputs upon reset the counter output is all 0
The counter is a digital sequencer, here a 4-bit counter. This simply means that you can count from 0 to 15 or vice versa depending on the counting direction (up/down).
The counter value (“count”) is evaluated on each positive (rising) edge of the clock cycle (“clk”).
If the "reset" input is logic high, the counter is set to zero.
If the "load" signal is logic high, the counter is loaded with the "data" input. Otherwise, count up or count down. If the "up_down" signal is logic high, the counter counts up, otherwise it counts down.
What are counters and their types
A counter is a sequential circuit. A well-known counter is a digital circuit used for counting pulses. Counters are the widest use of flip-flops. There are two types of counters. Asynchronous or ripple counter.
What are counters used for?
Counters are used not only to count, but also to measure frequency and time. increase memory address
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which of the following statements are true? local variables do not have default values. data fields have default values. a variable of a primitive type holds a value of the primitive type. all of the above
True local variables do not all have default values. Data fields come with default options. A primitive type's value is stored in a variable of that type.
Exist default values for data fields?Data fields come with default options. - No default values exist for local variables. A value of a primitive type is stored in a primitive type variable.
Which of the above techniques can be used to set up many variables with the same value at the beginning?By using = back-to-back, you can give many variables the same value. This is helpful, for instance, when setting numerous variables to the same value at the beginning. After assigning a value, it is also possible to assign a different value.
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Consider the following class definition
class rectangleType
{
public:
void setLengthWidth(double x, double y);
//Postcondition: length = x; width = y;
void print() const;
//Output length and width;
double area();
//Calculate and return the area of the rectangle;
double perimeter();
//Calculate and return the parameter;
rectangleType();
//Postcondition: length = 0; width = 0;
rectangleType(double x, double y);
//Postcondition: length = x; width = y;
private:
double length;
double width;
};
and the object declaration
rectangleType bigRect(14,10);
Which of the following statements is correct?
(Points : 4)bigRect.setLengthWidth();
bigRect.setLengthWidth(3.0, 2.0);
bigRect.length = 2.0;
bigRect.length = bigRect.width;
bigRect.setLengthWidth(3.0, 2.0); is the correct declaration of the class variable.
What is a class variable?
Class variables, also known as static variables, are declared using the static keyword within a class but outside of a method, constructor, or block. Regardless of how many objects are created from it, each class variable would only have one copy.
Instance variables are declared within a class but outside of a method. When heap space is allocated to an object, a slot is created for each instance variable value. Instance variables store values that must be referenced by multiple methods, constructors, or blocks, as well as essential parts of an object's state that must be present throughout the class.
Local variables are declared within methods, constructors, or blocks. Local variables are created when the method, constructor, or block is entered, and they are destroyed when the method, constructor, or block is exited.
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One of the first computer aided design programs ever developed was also among the first to be integrated into ERP systems. This popular program isO Corel DrawO CADdieO AutoCADO MotoCAD
AutoCAD is one of the first computer-aided design programs that was also one of the first to be integrated into ERP systems.
What is AutoCAD?To put it simply, AutoCAD is a type of CAD software that focuses on drawing and modeling in 2D and 3D. It allows for the creation and modification of geometric models with nearly infinite potential for creating various structures and objects.Because of its versatility, AutoCAD has expanded beyond its traditional use in architecture and engineering to enter the worlds of graphic and interior design.It is a required key in AutoCAD that ensures the execution of a command and can change the function of other keys.The Area command in AutoCAD is a very useful command that can be used to calculate the area and perimeter of a closed region drawn with a polyline.To learn more about AutoCAD refer to :
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Virtual memory layout [20] You have a 64-bit machine and you bought 8GB of physical memory. Pages are 256KB. For all calculations, you must show your work to receive full credit. (a) [1] How many virtual pages do you have per process? (b) [1] How many bits are needed for the Virtual Page Number (VPN)? (Hint: use part (a)) (c) [1] How many physical pages do you have? (d) [1] How many bits are needed for the Physical Page Number (PPN)? (Hint: use part (c)) (e) [1] How big in bytes does a page table entry (PTE) need to be to hold a single PPN plus a valid bit? (f) [1] How big would a flat page table be for a single process, assuming PTEs are the size computed in part (e)? (g) [10] Why does the answer above suggest that a "flat page table" isn't going to work for a 64-bit system like this? Research the concept of a multi-level page table, and briefly define it here. Why could such a data structure be much smaller than a flat page table? (h) [4] Does a TLB miss always lead to a page fault? Why or why not?
We have 2^48 pages per person. The number of physical pages is 2^16.. 48 bits of VPN are mapped to 16 bits of PPN. The PTE size is 2B. The page table size is 2^49 B.
What are the steps to calculate pages per person, physical pages, VPN ,PTE size and the table size?We know that;
Virtual Address = 64bits
Virtual Address Space = 2^Virtual Address = 2^64B
Physical Address Space = 4GB = 4 X 2^30 B = 2^32 B
Physical Address = log_2(Physical Address Space ) = log_2(2^32)
= 32 * log_2(2) = 32 bits.
Page size = 64KB =2^16 B
a) No of Virtual Pages = Virutal Address Space/PageSize
= 2^64B / 2^16 B = 2^48
b) NoOfPhysicalPages = PhysicalAddressSpace/PageSize
= 2^32 B / 2^16 B = 2^16
c) VPN (in Bits) = log_2(NoOfVirtual Pages) = log_2(2^48) = 48
PPN(inBits)=log_2(NoOfPhysicalPages)= log_2(2^16) = 16
Thus 48 bits of VPN are mapped to 16 bits of PPN.
d) PTE( Page Table Entry) holds the Physical Page Number of given Virtual Page along with many information about the page.
PTEsize = PPN(inBits) = 16 bits = 2B
e) Flat page table is single level page table. A page table contains the Physical Page number for a given page number. It helps in the translation of Vitual Address to Physical Address.
PageTableSize = NoOfVirtualPages*PTEsize = 2^{48}*2B = 2^49
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one drawback to the sequential search is that it cannot be used with an array that contains string elements. T/F
The sequential search has the limitation that it cannot be utilized with arrays containing string elements.Thus, it is false.
What sequential search, an array contains string elements?Searching linearly over an array of strings for the supplied string is an easy fix. Performing a modified binary search is a better solution.
Get the list of arrays. Get each element of the Array List object using the for-each loop. Make sure the array list's elements all contain the necessary string. Print the elements if applicable.
We compare the given string with the middle string, just like in a standard binary search. If the middle string is empty, we linearly search on both sides for the nearest non-empty string x.
Therefore, it is false that one drawback to the sequential search is that it cannot be used with an array that contains string elements.
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In the optimistic approach, during the phase, a transaction scans the database, executes the needed computations, and makes the updates to a private copy of the database values.
a. read b. validation
c. write d. shared
The correct answer for this problem is a. read
Why does it uses read phase?
In the optimistic approach to concurrency control in database systems, during the read phase, a transaction scans the database and reads the values it needs in order to execute the necessary computations.
This is often referred to as the "read" phase.
If the values have been modified by another transaction, the current transaction may need to abort and retry the process from the beginning. This ensures that transactions are able to execute without conflicting with one another and helps to maintain the integrity of the database.
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when producing a map in arcgis to emphasize the results of a suitability analysis, the largest element on the page should be: question 25 options: the location map the map legend the map frame containing the symbolized suitability feature class. the north arrow all these elements should be the same size
Making indicators for habitat suitability. The two main methods used to produce HSIs are as follows: Data-driven techniques ecological niche modeling This usually entails a statistical study of information about a species' present distribution. The so-called "environmental envelope" strategy is one of the easiest methods.
How do you determine whether a place is appropriate for GIS?
To identify appropriate locations for a project, use the ArcGIS Spatial Analyst extension. There are two approaches to locate appropriate places. To find places that meet your requirements, one method is to query your data. The second method involves creating a suitability map by merging datasets to determine each location's acceptability in the region.
What does the appropriateness test intend to achieve?
Investing firms conduct a suitability test to assess whether a client's investment goals, financial situation, knowledge, and experience are compatible with a particular portfolio management service or investment counseling service.
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in organisations that generate large number of transactions,.............are often a top priority in database designa. relationships among entitiesb.naming conventionsc.logical design standardsd.high processing speeds
In businesses that produce a lot of transactions, high processing speeds are frequently given top importance in database design.
Can I have ADHD if my processing speed is fast?No matter what researcher A or B chooses to name it—sluggish cognitive tempo, pure inattentive ADHD, whatever—you can still be highly intelligent. High processing speeds are even possible.
What is Processor Speed and Why Is It Important?When comparing computers, one of the most crucial factors to take into account is the processor speed (CPU speed). The CPU is frequently referred to as "the brain" of your computer, thus keeping it in good working order is crucial to the durability and functionality of your machine.
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To add drop-down lists to your worksheet with predetermined options for each city name, you decide to use _____
To add drop-down lists to your worksheet with predetermined options for each city name, you decide to use Data validation.
What is worksheet?In the original sense of the word, a worksheet refers to a piece of paper used for work. They take many different forms, but are most frequently connected to tax forms, accounting, and other business settings. The worksheet made of paper is increasingly being replaced by software.
It might be a printed page that a kid fills out with a writing implement. There is no requirement for additional supplies. It is "a piece of paper used to record work schedules, working hours, special instructions, etc. a piece of paper used to jot down problems, ideas, or the like in a rough form." A worksheet used in education might contain questions for students and spaces for them to record their responses.
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Which of the following applications would be a viable reason to use write-only memory in a computer?
Question 20 options:
Using a linked list that can remove elements from the head as well as the tail
Acquiring user input from the keyboard
Preparing geometric shapes for use on a graphics card
None of the above
Note that of the following applications the one that would be a viable reason to use write-only memory in a computer is: "None of the above" (Option D)
What is write-only memory?Write-only memory, the inverse of read-only memory, started as a joking allusion to a memory device that could be recorded to but not read, as there appeared to be no practical purpose for a memory circuit that could not be retrieved.
ROM stores the instructions required for communication among various hardware components. As previously stated, it is required for the storage and functioning of the BIOS, but it may also be used for basic data management, to store software for basic utility tasks, and to read and write to embedded systems.
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with the workshop type summary query design view, group the records by workshop type, count the lastname field values, and run the query
the design view query The query results are shown in a datasheet by Access.
In Access, how can I sort a last name query?Click on the "Sort" row of the field in the QBE grid by which you want to order the results of a query in Access' query design view. Then choose "Ascending" or "Descending" order using the drop-down that appears.
How can you find a record in a database table by looking for particular information there?Click the field you wish to search in after opening the table or form. Click Find or press CTRL+F in the Find group on the Home tab. The Find tab is selected, and the Find and Replace dialog box displays.
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A technician assist Joe, an employee in the sales department who needs access to the client database, by granting him administrator privileges. Later, Joe discovers he has access to the salaries in the payroll database.Which of the following security practices was violated?
The following security procedures were broken in accordance with the assertion made above on the principle of least privilege.
Giving an example, what is a database?A collection is a planned gathering of data. They enable the manipulation and storage of data electronically. Data administration is made simple by databases. Let's use a database as an example. A database is used to hold information on people, their mobile numbers, or other contact information in an online telephone directory.
What purposes serve databases?Any set of data or information that has been properly structured for quick searching and retrieval by a machine is referred to as a database, often known as an electronic database. Databases are designed to make it easy to save, retrieve, edit, and delete data while carrying out various data-processing tasks.
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