Answer:
True
Explanation:
In an ordered array or sorted array, we can implement binary search which uses branch prediction to search for values within the array. In binary search the array is divided into two halves. With the help of branch prediction we can easily find out in which part of the array the value may reside. Thus it drastically reduces the searching time. Whereas in a linear array, the array elements needs to be searched sequentially one after the other to match with the search element. Thus searching algorithm of ordered array is faster than regular array.
In a regular array, the insertion operation is faster than an ordered array because there we don’t have to decide the position at which the element needs to be inserted. In a regular array we can simply insert the new element to be added at the end of the array.
Thus the insertion time of an ordered array is slower than regular array.
What is ment by WCF services in asp.net?How does it help in creating web pages?
Answer:
WCF - Windows Communication Foundation
Explanation:
WCF stands for Windows Communication Foundation.
The first version of WCF is released as a part of .NET 3.0.The later versions are 4.0 and 4.5.
WCF is used to build distributed applications. Distributed application is an application that where parts of it run on two or more systems.
For example,
We have a web application running on one server. If this web application is consuming a web server which is running on another server, then this
application is called distributed application.
The programmers can also build 3-tier web application. The 3-tiers are,
1. Presentation tier
2. Business tier
3. Data Access tier
If all 3 tiers are deployed on same machine, scalability can be an issue, if more number of users try to access the application.
If we deploy each tier on different machines, then it can handle multiple requests without degrading performance of an application.
WCF is also used to build interoperable applications. An interoperable application is an application where one application can communicate with any other application that is built on any platform.
So, the two advantages of using WCF are:
An enterprise application can use the services
provided by other.
we can have better scalability.
Earlier, we used to have web services and .NET Remoting to build distributed applications.
Web service was used to exchange messages in XML format using HTTP protocol. A .NET remoting was used to exchange messages in binary format using TCP protocol.
Microsoft unified these communicating technologies and named it as WCF.
A digital computer has a memory unit with 24 bits per word. The instruction set consists of 150 different operations. All instructions have an operation code part (opcode) and an address part (allowing for only one address). Each instruction is stored in one word of memory. How many bits are needed for the opcode?
Answer:
8 bit
Explanation:
we have given that the instruction consist 150 different operation
we know that [tex]2^{8}[/tex] = 256
but we have only 150 operation
so now we check [tex]2^{7}[/tex]=128
which is less than 150 so we need 8 bit for the opcode
so the 8 bit are needed for the opcode because when we take 7 bit then [tex]2^{7}[/tex]=128 which is less than 150 and not useful so we need 8 bit
What is the minimum valid subscript value for array a?
#define MAX 50
int a[MAX], i, j, temp;
A. 0
B. 1
C. Any negative number
D. There is no minimum
E. None of the above
Answer:
The answer to this question is A. 0.
Explanation:
In this segment of code #define MAX 50 is used.It is a pre-processor directive and in pre processor directive it is a MACRO means whenever the compiler encounters the word MAX in the execution it replaces MAX with 50.
So the size of the array becomes 50 and the indexing starts from 0 and upto 49.
The Task Manager can be used ot track running _________________ .
Answer:
Processes
Explanation:
The Windows Task Manager helps us track processes running on the system.
It can be invoked by pressing Ctrl+Alt+Delete and selecting the 'Task Manager' option or by right clicking on the status bar and choosing 'Task Manager' menu item. Besides the running process name it also provides supplementary information about the process such as :
CPUMemoryDiskNetworkThe condition that is tested by a while loop must be enclosed in parentheses and terminated with a semicolon
True False
Answer:
False
Explanation:
while loop is used to execute the statement again and again until the condition is TRUE.
Syntax:
initialization;
while(condition)
{
statement;
}
we write condition within the parentheses but without terminate with the semicolon.
Therefore., the answer is False
A B-tree can be ____ in three ways: inorder, preorder, and postorder.
A.
copied
B.
reversed
C.
traversed
Answer:
traversed
Explanation:
B-tree is a self balancing tree and it is a data structure which allows insertion, deletion operations.
inorder, preorder and post order, they all are traversing algorithms in the tree data structure.
inorder: first print left, then root and then right.
preorder: first print root, then left and then right.
postorder: first print left, then right and then root.
Therefore, the answer is traversed.
An expression tag contains a scripting language expression thatis evaluated.TrueFalse
Answer: True
Explanation:
Yes, an expression tag contains a scripting language expression that is evaluated. As, expression tag is used to display the output of the data in the generated page. If data is placed in expression tag then, it prints on the output stream and then it automatically convert data into the string and the output are displayed.
What is the output frequency for a counter circuit that contains 12 flip-flops with an input clock frequency of 20.48 MHz?
Answer:
5KHz
Explanation:
The formula for calculating the output frequency when the input frequency and the number of flip-flops are given.
[tex]out put Frequency = \frac{in put frequency}{2^{N}}[/tex]
here, N is the number of filp-flops.
Note: The input frequency must be in Hz.
first convert given input frequency (MHz) into HZ.
[tex]in put frequency = 20.48 *10^{6}Hz[/tex]
apply the formula:
[tex]out put Frequency = \frac{20.48*10^{6}}{2^{12}}[/tex]
which comes out to be 5000Hz or 5KHz.
The following JavaScript program is supposed to print: 1 by 4 by 9
on a single line by itself. Unfortunately the program contains at least eight mistakes. Write the corrected line beside the line in error.
var N; // Text
N := 1;
document.writeln( N );
document.writeln( “ by “);
document.writeln( “N + 3”);
document.writeln( “ by “ );
document.writeln( N + 5);
Answer:
var N; // Text
N = 1;
document.write( N );
document.write(" by ");
document.write(N + 3);
document.write(" by ");
document.write(N + 8);
Explanation:
var N; // Text
N = 1;
document.write( N );
document.write(" by ");
document.write(N + 3);
document.write(" by ");
document.write(N + 8);
The AND operator is written as two ____.
a.
asterisks
b.
equal signs
c.
ampersands
d.
plus signs
Answer:
ampersands
Explanation:
In the programming the AND operator is denoted as '&&' , two ampersands.
it is used to between two conditions and give Boolean result.
It has four possible result:
first condition TRUE second TRUE, result TRUE
first condition TRUE second FALSE, result FALSE
first condition FALSE second TRUE, result FALSE
first condition FALSE second FALSE , result FALSE
For example:
(5 > 0 && 7 > 4): it gives the result TRUE because both are true.
5 > 8 && 7 > 4): it gives the result FALSE because one is false.
what are the elements of a Software Process Improvement (SPI) modle?
Answer: Current Situation Evaluation, Improvement Planning, Improvement Implementation, Improvement Evaluation are the elements of SPI
Explanation:
SPI modle plans to achieve a desired task of software development in terms of Current Situation Evaluation, Improvement Planning, Improvement Implementation, Improvement Evaluation, with each having a specified and detailed role to play in the software development.
What would display if the following pseudocode was coded and executed? Declare String user = "Martha and George" Declare Integer number Set number = length(user) Display number
Answer:
17
Explanation:
length() is the function which is used to find the number of character the string.
character include space as well.
initially declare the string user with input "Martha and George".
then call length function which count the character within the double quotes""
total number is 17 (15 letters and 2 spaces).
and it then store in the integer.
finally print the value.
Therefore, the output is 17.
The Windows 8 file management interface is called _____.
A. Windows Manager
B. File Browser
C. File Manager
D. File Explorer
Answer:
D. File Explorer
Hope that helps!
Differentiate Between register and Memory location (
Answer:
Register-it contains all the instructions that are present in the processor.
Memory location- it is the particular memory address where the data is stored.
Explanation: Difference between register and memory location are as follows :-
Register are the found in the CPU internal storage and memory location is present on the RAM.Registers are faster in movement as compared to the memory location.Register has the capacity of holding of less data as compared to the memory location which can store data in large amount .The true or false questions.
The command: find -empty -type f -exec rm { } \; will remove all empty regular files, starting from the current directory
Answer:
true
Explanation:
The command:
find -empty -type f -exec rm { } \;
carries out the following steps.
1) Finds all the empty files in the current directory and its subdirectories.
2) For each of the identified files, it executes the command specified as the parameter to exec option,namely, rm <filename>.
So effectively it removes all empty files in the directory tree starting at the current directory.
A five-digit number is entered through the keyboard. Write a program to obtain the reversed number
Answer:
#include<iostream>
using namespace std;
int main(){
int number;
cout<<"Enter the five-digit number: ";
cin>>number;
int result = 0;
while(number != 0){
int remainder = number % 10;
result = result*10 + remainder;
number = number/10;
}
cout<<"The reverse Number is: "<<result<<endl;
return 0;
}
Explanation:
first, include the library iostream for using the input/output.
Then, create the main function and declare the variables.
Print the message on the screen by using the instruction cout.
Store the value enter by the user in the variable by using cin instruction.
Take the while which runs until the number not equal to zero.
In the while, first, take the remainder of the number by using the operator '%'.
for example:
number = 123 % 10, it gives the value 3 which is the remainder.
after that, we write logic to reverse the number:
initially, remainder =3 and result=0
result = result * 10 + remainder
so, the result will be 3
after that, suppose remainder =2 and result=3 (previous calculated)
result = 3* 10 +2.
so, the result will be 32. so the number is reversed. we store the number in reverse order.
This process continues until the condition is true.
After that, print the output.
Write a JAVA program to sort a given array of integers (1 Dimensional) in ascending order (from smallest to largest). You can either get the array as input or hardcode it inside your program.
Answer:
import java.util.Arrays;
public class sort{
public static void main(String []args){
int[] arr = {2,6,9,1,5,3};
int n = arr.length;
Arrays.sort(arr);
for(int i=0;i<n;i++){
System.out.println(arr[i]);
}
}
}
Explanation:
first import the library Arrays for using inbuilt functions.
create the main function and define the array with elements.
then, use the inbuilt sort function in java which sort the array in ascending order.
syntax:
Arrays.sort(array_name);
then, use for loop for printing the each sorting element on the screen.
How do you write a computer program to convert a decimal number into binary, octal, and hexadecimal?
Answer:
#include <iostream>
using namespace std;
void hexadecimal(int dec)
{
char hexa[100];// character array to store hexadecimal number.
int i = 0;
while(dec!=0)
{
int digit = 0;
digit = dec % 16;// storing remainder.
if(digit < 10)//condition
{
hexa[i] = digit + 48;//storing digit according to ascii values.
i++;
}
else
{
hexa[i] = digit + 55; //storing respective character according to ascii values..
i++;
}
dec = dec/16;
}
cout<<"The corresponding Hexadecimal number is :- ";
for(int j=i-1; j>=0; j--)// printing in reverse order .
cout << hexa[j];
cout<<endl;
}
void Binary(int dec)
{
int bin[32];// integer array to store binary values.
int i = 0;
while (dec > 0) {
bin[i] = dec % 2;// storing remainder
dec = dec / 2;
i++;
}
cout<<"The corresponding Binary number is :- ";
for (int j = i - 1; j >= 0; j--) // printing in reverse order
cout << bin[j];
cout<<endl;
}
void Octal(int dec)
{
int oct[100];// integer array to store octal values.
int i = 0;
while (dec != 0) {
oct[i] = dec % 8;// storing remainder
dec = dec / 8;
i++;
}
cout<<"The corresponding Octal number is :- ";
for (int j = i - 1; j >= 0; j--) // printing in reverse order
cout << oct[j];
cout<<endl;
}
int main() {
int d,bin,oct,hex;
cout<<"Enter decimal number"<<endl;
cin>>d;//taking input.
Binary(d);
Octal(d);
hexadecimal(d);
return 0;
}
OUTPUT:-
Enter decimal number
10
The corresponding Binary number is :- 1010
The corresponding Octal number is :- 12
The corresponding Hexadecimal number is :- A
Enter decimal number
256
The corresponding Binary number is :- 100000000
The corresponding Octal number is :- 400
The corresponding Hexadecimal number is :- 100
Explanation:
I have built 3 function of type void Hexadecimal,Binary,Octal all the functions take decimal integer as argument.They print their respective number after conversion.
So main approach is that :-
1.Take an array to store the digit on dividing.
2.Find the remainder on dividing it by corresponding number (for ex:- if binary divide by 2).
3.Store each remainder in the array.
4.Divide the number until it becomes 0.
5.Print the array in reverse.
What will be the value of input_value if the value 5 is input at run time?
cin >> input_value;
if (input_value > 5)
input_value = input_value + 5;
else if (input_value > 2)
input_value = input_value + 10;
else
input_value = input_value + 15;
Answer:
15
Explanation:
The if else state is used for checking the condition and if the condition is TRUE and program can execute the statement within the if else.
Initially input_value is 5
then the if statement check the condition 5>5, condition FALSE because 5==5
it not less than 5.
then program move to else if and check condition 5>2, condition TRUE.
then, input_value = 5 + 10=15 execute and update the value to 15.
After that, program terminate the if else statement.
Therefore, the answer is 15.
When you create an array variable, memory space is automatically reserved.
True
False
Answer:
The answer is true.
Explanation:
An array is a collection of data of the same type. It is used to handle a number ''n'' of elements in common, either of types defined by the language ( int, float, string, etc) as well as those defined by the programmer.
A one dimensional array is a structured data type that is made up of a finite, ordered collection of data of the same type.
A vector, also called a one dimensional array, is a data structure that allows you to group elements of the same type and store them in a single block of memory together, one after the other. This group of elements is identified by the same name and the position in which they are found. Ther first position of the array is position zero.
We could group in an array a series of elements of integer type, floating, etc. For example:
int a [5]; (vector of 5 integers)
float b[5]; (vector of 5 floating)
int a [] = {5,6,7,8,9};
float b [] = {5.1,5.2,5.3,5.4,5.5};
Since there are 5 elements in each array, automatically 5 memory spaces will be assigned to each vector, but if I try to create the vector of the form int a [], the compiler will show an error, because I did not indicate the size of the vector and I did not initialize its elements.
What does the /etc/shadow file contain?
Answer:
This file contains encrypted password and other information also such as password expiration values,account and other confidential stuff etc.
Explanation:
In linux this file contains passwords and confidential stuff.
This file is only readable that to by the root account and hence it is secured.
write a program which capitalize every character after full stopin a given sentence
Answer:
#include <bits/stdc++.h>//header file which includes most of the libraries..
using namespace std;
int main() {
char st[500];//character array of length 500..
cin.getline(st,499);//taking input of the text.
for(int i=0;st[i];i++)
{
if((st[i]=='.')&& (i!=strlen(st)-1))//condition
{
st[i+1]= toupper(st[i+1]);//converting to upper case.
}
}
cout<<st<<endl;//printing the string..
return 0;
}
Input:
i am .the .great .gambler.i am going gamble everything
Output:
i am .The .Great .Gambler.I am going gamble everything
Explanation:
I have taken a character array of size 500.
Taking input as a line.
If full stop encounters then converting the character to uppercase if it exists.
Printing the output.
The general case in a recursive function is the case for which the solution is obtained directly.
True
False
Answer: False.
Explanation:
The general case of recursive function is when the solution is obtained recursively by simplification at each step.
However, it is the base case in a recursive function when the solution is obtained directly.
The general case must be reducible to base to arrive at a solution else the recursion would be a infinite recursion.
a. Is there any functional difference between the class being instantiated in the following two ways? Balanced bal = new Balanced ("abc", "xyz"); Balanced bal = new Balanced ("cab", "zxy"); b. Is there any functional difference between the class being instantiated in the following two ways? Balanced bal = new Balanced ("abc", "xyz"); Balanced bal = new Balanced ("abc", "zxy"); c. Is there any functional difference between the class being instantiated in the following two ways? Balanced bal = new Balanced ("abc", "xyz"); Balanced bal = new Balanced ("xyz", "abc"); d. What type is pushed onto the stack? A char? An int? An integer? explain. e. Under which circumstances is the first opeation performed on the stack (not counting the new operation) the top operation? f. What happens if the string expression, that is passed to the test method, is an empty string?
Answer:
A,B,C -NO
D-Value type like int,char..
E.pop
D. it throws null exception
Explanation:
(A,B,C)There is no functional difference but as the values passed to the parameterized constructor is different so you will get different outputs but functionality of the class didn't change
(D) stack is a data structure which stores value types where as heap stores object types.In.stack actual value of the variable stored and heap address of the object stored
(E)the top operation on stack is always pop once we inserted the elements in a stack.if there are no elements in stack pop results null
(D) if the string we passed is null or empty to the test method it returns exception we need to handle that
Develop a program so that the output will produce the following :
the circumference of the circle is 33.912
the area of the circle is 91.5624.
Answer:
#include <iostream>
using namespace std;
int main()
{
float radius = 5.4;
float circumference = 2 * 3.14 * radius;
float area = 3.14 * radius * radius;
cout<<"the circumference of the circle is "<<circumference<<endl;
cout<<"the area of the circle is "<<area<<endl;
return 0;
}
Explanation:
Include the library iostream for using the input/output instructions.
create the main function and define the variable with value. Then,
use the formula to calculate the circumference and are of circle.
[tex]circumference = 2*\pi *radius[/tex]
[tex]area = \pi * radius^{2}[/tex]
here, choose [tex]\pi = 3.14[/tex]
after that, display the result.
Note: All variable define in float type.
The class at the top of exception class hierarchy is ..........................
A) ArithmeticException
B) Throwable
C) Class
D) Exception
Answer:
B) Throwable
Explanation:
Great question, it is always good to ask away and get rid of any doubts that you may be having.
There are a wide range of classes on the exception class hierarchy. All the way on the top is the Objects Class but since that is not an available answer we will move on to the next one. The next one is the Throwable class. therefore that is the answer.
**Exception is after Throwable , and Arithmetic Exception is at the bottom.... everything is a class so that is not a part of the hierarchy **
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
When a user process is running and an instruction is executed that requests a file-open operation, which of the following event will occur? (A) Supervisor call (B) Trap (C) I/O interrupt (D) Fault (E) None of the above
Answer:e
Explanation:
Because it will automatically work
What operator is used to create a validation rule? A. – B. / C. < or > D. +
Answer:
A
Explanation:BECAUSE
Relational operators, specifically < and >, are used to create validation rules that data must satisfy when being entered or modified. They set conditions such as requiring a quantity to be at least one, as in >=1.
The operator used to create a validation rule is C. < or > which are relational operators. These operators are essential in forming expressions that set the conditions data must meet to be considered valid. For instance, a typical validation rule in an Order Entry form might be that the quantity entered must be equal to or greater than one. In this case, the rule would be represented as >=1.
In database systems and programming, the proper use of relational operators, such as <, >, <=, and >=, is critical for ensuring accurate querying and data integrity. These operators allow for comparison between values, ensuring that the entered data fits within the specified parameters defined by the validation rules.
What is the difference between a sequential access tile and a random access file?
Answer: Sequential access file enables the computer system to read or write file in sequential manner whereas random access file enables to read or write randomly in a data file.
Explanation:
Sequential file access is faster than random file access, however random access uses index searches. In random access higher number of seek operations are involved whereas in sequential access the number of seek operation is less.
Assume that x is an integer variable. Which of the following represents the memory address where x is stored? E) None of the Above A) x B) &x C) *x D) 2**
Answer: (B) &x
Explanation:
Here whenever any variable is stored let it be integer, char, float it is always stored in a memory location assigned as '&'. Here the location where x is stored is denoted as '&x' which means memory address of x. *x means the pointer which is pointing to the memory address of x.