some computer systems do not provide a privileged mode of operation in hardware. yes it possible to construct a secure operating system for these computers
This is theoretically possible by carefully monitoring and scrutinizing the output of just one process while it is being performed. To ensure that we are aware of each process's priority, we must take into account the fact that this will undoubtedly reduce the system's efficiency (it will function considerably more slowly) (which is rather hard if we do not have modes).
This type of equipment would require an operating system that could only operate in control (or monitor) mode. There are two ways that this could be done:
a. Software emulation of all user programs (such as some BASIC, Java, and LISP systems, for instance). What the hardware lacks, the software interpreter would supply in software.
b. Require meant that all programs must be written in high-level languages in order for compilers to output all object code. The protection checks for the missing hardware would be generated by the compiler (either internally or through function calls). It would be an absurdly difficult code.
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in june 2009, the u.s. federal communications commission (fcc) mandated that all over-the-air television broadcasts originating in the u.s. must be broadcast digitally instead of the traditional analog signal. these digital transmissions cannot be decoded by traditional analog tvs but require either a digital decoder be attached to an analog tv or a natively digital tv.
The Demonstration on the graph of how the market for analog TVs changed immediately following the announcement of the switch to digital is that Line D will shift to the left one as well as line S will shift to the right.
What is the meaning of hypothetical business?The trial's objective under the hypothetical strategy is to calculate the treatment's impact in the fictitious absence of the concomitant occurrence.
In order to determine customer interest in and market demands for products that are currently in development, hypothetical scenario marketing uses product surveys and made-up scenarios. As a small business owner, adopting hypothetical marketing can assist you in directing resources into product categories where customers have expressed interest and demand.
Therefore, A speculation market is a hypothetical market. It refers to a hypothetical market, and in this sense, it signifies that if all the resources were made available that a person would come into.
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See full question below
The accompanying graph depicts a hypothetical market for analog TVs.
In June 2009, the U.S. Federal Communications Commission (FCC) mandated that all over-the-air television broadcasts originating in the U.S. must be broadcast digitally instead of the traditional analog signal. These digital transmissions cannot be decoded by traditional analog TVs but require either a digital decoder be attached to an analog TV or a natively digital TV.
Both sellers and consumers were made aware of the upcoming switch from analog transmission to digital several years before the mandate took effect.
Demonstrate on the graph how the market for analog TVs changed immediately following the announcement of the switch to digital. For the supply side, focus on the end seller (such as an electronic store) of a TV and not the manufacturer.
when you use a(n) language, you create programs by putting together a collection of objects. question 41 options: object-oriented collective object-based high-level
When you employ an object-oriented language, you build programs by assembling a group of objects.
In contrast to functions and logic, object-oriented programming (OOP) organizes software design around data or objects. Objects can be defined as data fields with specific traits and behaviors.
Instead of focusing on the logic required to handle the objects, OOP focuses on the objects that developers want to control. This approach of programming works best with large, complex, and frequently updated programs. This encompasses mobile applications as well as design and production software. Software to simulate manufacturing systems, for instance, can be developed using OOP.
Due to object-oriented software's organizational structure, the approach is excellent for collaborative development when projects are broken up into groups.
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a(n) can execute a set of statements only under certain circumstances. question 9 options: circumstantial structure decision structure event structure sequence structure
Only in certain circumstances will the decision structure be able to execute a set of statements. The term "decision structure" refers to a framework that works under certain circumstances.
The decision structure of a computer program is the functionality that enables the program to make decisions and change its behavior according to those choices. Selection is determined in light of the results of a logical test. A computation that yields a true/false result is called a logical test. The programmer must define one or more conditions to be evaluated or tested programmatically, associated with one or more statements that are executed if the condition is true.
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which type of evidence is stored in a computer's memory, as well as on storage devices as in files, and must be accompanied by documentation that validates the evidence's authenticity?
Information that has been stored or transmitted in binary format and is admissible in court is known as digital evidence. Digital evidence is frequently linked to electronic crime, sometimes known as e-crime.
Processes and programs now executing on the system, network connections, signs of malware infection, registry hives, usernames and passwords, decrypted files and keys, and signs of activity not generally saved on the local hard disk are all examples of evidence that can be discovered in RAM. When dealing with the search and seizure of computers at a crime scene, law enforcement often just unplugs the computer and books it into the evidence center. The investigator then demands that a certified digital evidence examiner examine the computer.
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question 3. a full ternary tree is a tree whose internal nodes each have exactly three children. (a) write a recursive definition for a full ternary tree. (b) write a recursive definition for the number of internal nodes i(t) in a full ternary tree. (c) write a recursive definition for the number of external nodes e(t) in a full ternary tree. (d) write a recursive definition for the total number of nodes n(t) in a full ternary tree.
Each node in a ternary tree can have a maximum of three children, which are typically labeled "left," "mid," and "right."
A 3 height perfect binary tree contains 23+1 - 1 = 15 nodes. The tree must therefore be stored in 300 bytes. The tree will have 7 nodes if it is at least 3 feet tall and has the required number of nodes. Node 1 serves as the ternary tree's root node, and it has three children: Nodes 2, 3, and 4. Therefore, Node 3's parent node and the ternary tree's root node are the same. There are 2n+1 nodes in a full binary tree with n non-leaf nodes. Each non-leaf node in a binary tree provides two edges.
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write a if/else if statement that compares the double variable ph with 7.0 and makes the following assignments to the bool variables neutral, base, and acid:
A if/else if statement that compares the double variable ph with 7.0 if (pH<7.0){ .A complete java program that prompts a user for the pH value is provided in the explanation section
import java.util.Scanner;
public class ANot {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Enter a value for the pH");
boolean neutral, base, acid;
double pH = in.next Double();
if (pH<7.0){
neutral=false;
base=false;
acid=true;
}
else if (pH>7.0){
neutral=false;
base=true;
acid=false;
}}
else if (pH==7.0){
neutral=true;
base=false;
acid=false;
}
}
If a certain condition is true, the if/else statement causes a block of code to be executed. Another block of code can be run if the condition is false. The "Conditional" Statements in JavaScript, which are used to carry out various operations depending on various conditions, include the "if/else" statement.
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add a jframe to it , then add to the frame, through code, the necessary components (labels, textfields, etc...) to allow a user to enter the number of donuts purchased and the price of each donuts. add a sales button to compute the subtotal, the tax and the total cost
A form of container known as JFrame class derives from the Java Awt Frame class. JFrame functions as the main window where a GUI is added by adding components like labels, buttons, and text fields.
If all a graphical application has are labels, it is pretty dull. It is of little use to the end user if it lacks text fields, buttons, and accessories like tool tips. In this lesson, we'll go through how to add a text box to a slogan for a vintage TV program. To accomplish this, we'll build a text field, a button, and then tool tips for these components.
import javax.swing.JFrame;
public class example {
public static void main(String[] args){
JFrame frame = new JFrame();
frame.setSize(100,100);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOES);
frame.setTitle("Example Frame");
frame.setVisible(true);
}
}
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what allows the internet assigned numbers authority (iana) to segment any address space to define larger or smaller networks as needed, giving far more flexibility to allocate networks of virtually any size without wasting large blocks of ip addresses?
IP addresses for the Internet are distributed by the Internet Assigned Numbers Authority (IANA).
The IPv4 addresses with four groups of numbers, with which we are most familiar today, are no longer available, according to the IANA. There are five global regions (sometimes referred to as RIRs) inside IANA, and each one provides IP addresses for devices within that region. On February 3, 2011, IANA distributed the final blocks/groups of IPv4 addresses, one block of /8 addresses, to each region. With each area being exhausted, this practically means that IANA is currently out of addresses. The first to expire in 2011 was APINC (Asia Pacific area).and have since assigned actions to prolong them as much as feasible. After that, LACNIC (Latin America) expired in 2014. In 2015, the free address pool of ARIN (North America) was depleted. On November 25, 2019, RIPE (region of Europe) expired. Only AFRINIC (Africa) has not yet used up all of its addresses, although it is inevitable that they will soon be used up.
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Write a code segment to change the name of the Thing object, something, such that the new name consists of the old name with one character removed at random. For example, if something has name "ABCD", its new name could be set to "ACD". Write the code segment below. Can you help me by writing it in java?
A code segment to change the name of the Thing object, something, such that the new name consists of the old name with one character removed at random is given below:
The Code Segment// C++ program to check whether two strings are anagrams
// of each other
#include <bits/stdc++.h>
using namespace std;
/* function to check whether two strings are anagram of
each other */
bool areAnagram(string str1, string str2)
{
// Get lengths of both strings
int n1 = str1.length();
int n2 = str2.length();
// If length of both strings is not same, then they
// cannot be anagram
if (n1 != n2)
return false;
// Sort both the strings
sort(str1.begin(), str1.end());
sort(str2.begin(), str2.end());
// Compare sorted strings
for (int i = 0; i < n1; i++)
if (str1[i] != str2[i])
return false;
return true;
}
// Driver code
int main()
{
string str1 = "gram";
string str2 = "arm";
// Function Call
if (areAnagram(str1, str2))
cout << "The two strings are anagram of each other";
else
cout << "The two strings are not anagram of each "
"other";
return 0;
}
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1. Which element should be used only when the content simply references the element
a. nav
b. figure
c. article
The element should be used only when the content simply references the element is option b. figure.
What are the Elements of referencing?Reference list entries is said to be made up of four elements of the:
The authorThe dateThe titleThe source.A reference in computer programming is a value that enables a program to indirectly access a specific piece of information, like the value of a variable or a record, in the computer's memory or in another storage location.
Therefore, the data is referred to as the reference's referent, and accessing the datum is referred to as dereferencing the reference.
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Proportional relationship between x and y, where k is the constant of proportionality. for a moving object, the equation d = st represents a proportional relationship between distance (d) and speed (s) or between distance (d) and time
Among the three variables, speed is the proportionality constant. Regardless of the distance or location, the speed remains constant.
When two or more parameters are proportional to one another either directly or indirectly, their relationship is stated as a = kb or a = k/b, where k denotes the direction of the relationship between the two variables. The proportionality constant is thus k.
d= st
d = distance
speed is s.
t = time
Among the three variables, speed is the proportionality constant.
The speed is consistent over all locations and distances.
This can be expressed in various ways, as shown below.
d = st
S = d/t
t = d/s
There are other proportional relationships.
V/I = R
V stands for voltage.
I is the Current
R stands for resistance.
This connection is used to determine a device's resistance.
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The complete question is-
The equation y = kx represents a proportional relationship between x and y, where k is the constant of proportionality. For a moving object, the equation d = st represents a proportional relationship between distance (d) and speed (s) or between distance (d) and time (t). Explain the different ways that you can define the constant of proportionality for this equation. Then describe some other equations that represent proportional relationships in the real world and explain why they’re useful. Research on the Internet, if needed.