Database Systems Mock Test 10

The number of addresses in the block can be found by using the formula:

1 Mark(s)

Your Answer:

232+3n 232+3n
232+n 232+n
232-n 232-n
232-2n 232-2n

In C#, what is the purpose of the Action delegate?

1 Mark(s)

Your Answer:

Represents a delegate that encapsulates a method that takes no parameters and does not return a value
Represents a delegate that encapsulates a method that takes no parameters and returns a value
Represents a delegate that encapsulates a method that has two parameters and returns a value
Represents a delegate that can encapsulate a method with a single parameter and does not return a value

Is the following Python code valid? a={1,2,3} b={1,2,3,4} c=a.issuperset(b) print(c)

1 Mark(s)

Your Answer:

False False
True True
Syntax error for issuperset() method Syntax error for issuperset() method
Error, no method called issuperset() exists

In C#, which method is used to read the entire contents of a file into a string?

1 Mark(s)

Your Answer:

ReadText() ReadText()
ReadString() ReadString()
ReadLines() ReadLines()
ReadAllText() ReadAllText()

Which of the following format specifiers is used to print hexadecimal values and return value of output as Octal equivalent in C#?

1 Mark(s)

Your Answer:

%hx for small case letters and %HX for capital letters
%x for small case letters and %X for capital letters
No ease of doing it. C# don't provides specifier like %x or %O to be used with ReadLine() OR WriteLine(). We have to write our own function
%Ox for small case letters and %OX for capital letters

Angles subtended by the arcs helps in calculation of the fibre's:

1 Mark(s)

Your Answer:

spiral angle spiral angle
perpendicular angle perpendicular angle
diameter diameter
thickness thickness

What will be the output of the following Python code? x = ['ab', 'cd'] print(len(map(list, x)))

1 Mark(s)

Your Answer:

[2, 2] [2, 2]
2 2
4 4
none of the mentioned none of the mentioned

Which of the following is the basic unit of a PowerPoint presentation?

1 Mark(s)

Your Answer:

Slide Slide
Window Window
Document Document
Picture Picture

A listener for the dragenter and dragover events are used to indicate valid drop targets, that is, places where dragged items may be dropped.

1 Mark(s)

Your Answer:

True True
False False

Which of the following works as a sidebar?

1 Mark(s)

Your Answer:

<aside> <aside>
<footer> <footer>
<details> <details>
<section> <section>

A compiler can detect which type of error?

1 Mark(s)

Your Answer:

Logical error Logical error
Runtime error Runtime error
Syntax error Syntax error
All of these All of these

The station on a wireless Additive Links On-line Hawaii Area (ALOHA) network is maximum of:

1 Mark(s)

Your Answer:

400 Km 400 Km
500 Km 500 Km
600 Km 600 Km
700 Km 700 Km

XML technology is a hybrid of document processing and database processing.

1 Mark(s)

Your Answer:

True True
False False

How many read-only attributes are present in the navigator object?

1 Mark(s)

Your Answer:

1 1
2 2
3 3
4 4

All HTML documents must start with a:

1 Mark(s)

Your Answer:

Header tag Header tag
Body tag Body tag
Title tag Title tag
Document type declaration Document type declaration

Select the Keyword which supports the run time type identification?

1 Mark(s)

Your Answer:

is, as is, as
as, typeof as, typeof
Both is, as & as, typeof Both is, as & as, typeof
Only is, as Only is, as

Which of the following best describes polymorphism?

1 Mark(s)

Your Answer:

Ability of a class to derive members of another class as a part of its own definition
Means of bundling instance variables and methods in order to restrict access to certain class members
Focuses on variables and passing of variables to functions
Allows for objects of different types and behaviour to be treated as the same general type

The nose is the organ that helps us to distinguish between:

1 Mark(s)

Your Answer:

temperature temperature
views views
tastes tastes
smells smells

What will be the output of the following PHP code ? <?php $color1 = "1"; $color2 = "1"; echo "$color1" + "$color2"; ?>

1 Mark(s)

Your Answer:

11 11
2 2
0 0
1 1

What happens if a user forgets to define a constructor inside a class?

1 Mark(s)

Your Answer:

Error occurs Error occurs
Segmentation fault Segmentation fault
Objects are not created properly Objects are not created properly
Compiler provides a default constructor to avoid faults/errors

Computer derives its basic strength from:

1 Mark(s)

Your Answer:

speed speed
memory memory
accuracy accuracy
all of these all of these

A compound statement of the form begin atomic ... end ensures that all the statements contained within it are executed as:

1 Mark(s)

Your Answer:

Multiple transactions Multiple transactions
Repeated transactions Repeated transactions
Single transaction Single transaction
No value returned transaction No value returned transaction

Which of the following is a graphical representation of data?

1 Mark(s)

Your Answer:

Chart Chart
Spreadsheet Spreadsheet
Database Database
None of these None of these

What will be the output of the following C++ code? #include <iostream> #include <string> using namespace std; class A { static int a; public: void change(int i){ a = i; } void value_of_a(){ cout<<a; } }; int A::a = 5; int main(int argc, char const *argv[]) { A a1 = A(); A a2 = A(); A a3 = A(); a1.change(10); a1.value_of_a(); a2.value_of_a(); a3.value_of_a(); return 0; }

1 Mark(s)

Your Answer:

1055 1055
555 555
101010 101010
51010 51010

The two elements i.e. carbon and hydrogen, are foundation units of:

1 Mark(s)

Your Answer:

plastic bucket plastic bucket
limestone limestone
chalk chalk
marble marble

Which of the following is internal list of prefixes?

1 Mark(s)

Your Answer:

Modernizr._prefixes Modernizr._prefixes
Modernizr.prefixedCSS value Modernizr.prefixedCSS value
Modernizr.prefixedCSS Modernizr.prefixedCSS
Modernizr.prefixed Modernizr.prefixed

Static programs of the computer system are stored in:

1 Mark(s)

Your Answer:

RAM RAM
ROM ROM
hard disk hard disk
CD CD

Overloading the addition (+) operator is correct function name OF:

1 Mark(s)

Your Answer:

operator(+) operator(+)
operator_+ operator_+
operator+ operator+
operator:+ operator:+

Which of the following is a self - balancing binary search tree?

1 Mark(s)

Your Answer:

2-3 tree 2-3 tree
Threaded binary tree Threaded binary tree
AA tree AA tree
Treap Treap

Atomic number of Hydrogen is:

1 Mark(s)

Your Answer:

30 30
1 1
65 65
23 23

What does the qqnorm() function in R do?

1 Mark(s)

Your Answer:

Plots a quantile-quantile plot for normality assessment
Generates a random sample from a normal distribution
Creates a normal probability plot Creates a normal probability plot
Quantifies the normal distribution of a variable

What is the result of the following code snippet? try { int[] arr = new int[5]; int value = arr[10]; } catch (ArrayIndexOutOfBoundsException e) { System.out.println("Exception Caught!"); } finally { System.out.println("Finally Block!"); }

1 Mark(s)

Your Answer:

Compilation error Compilation error
Exception Caught! Exception Caught!
Finally Block! Finally Block!
Exception Caught! Finally Block! Exception Caught! Finally Block!

In C#, which keyword is used to define a method that can be overridden in derived classes?

1 Mark(s)

Your Answer:

virtual virtual
overridable overridable
extendable extendable
override override

To copy a picture of the screen to the Clipboard use:_________ Command?

1 Mark(s)

Your Answer:

Alt Key Alt Key
Shift key Shift key
Print screen Print screen
None of these None of these

Output of following C++ code will be? C++ #include <iostream> using namespace std; class X { public: int x; }; int main() { X a = {10}; X b = a; cout << a.x << " " << b.x; return 0; }

1 Mark(s)

Your Answer:

Compiler Error Compiler Error
10 followed by Garbage Value 10 followed by Garbage Value
10 0 10 0

Enzyme complexes joins with glucose molecules into long chain cellulose molecules in a:

1 Mark(s)

Your Answer:

small cell small cell
big molecule big molecule
growing cell growing cell
constant cell constant cell

In Hadoop, what is the purpose of the Hadoop MapFile format?

1 Mark(s)

Your Answer:

Store compressed key-value pairs Store compressed key-value pairs
Store unstructured data Store unstructured data
Store data in a columnar format Store data in a columnar format
Store data in a binary format Store data in a binary format

What is the primary use of the feather package in R?

1 Mark(s)

Your Answer:

Data manipulation and transformation Data manipulation and transformation
Efficiently reading and writing data frames
Time series analysis and forecasting Time series analysis and forecasting
Handling large datasets with parallel computing

To add a new element to a list we use which command?

1 Mark(s)

Your Answer:

list1.add(5) list1.add(5)
list1.append(5) list1.append(5)
list1.addLast(5) list1.addLast(5)
list1.addEnd(5) list1.addEnd(5)

Which of the following is not the type of computer RAM?

1 Mark(s)

Your Answer:

quick RAM quick RAM
dynamic RAM dynamic RAM
stable RAM stable RAM
both A and C both A and C

What will be the output of the following C++ code? #include <iostream> #include <string.h> using namespace std; int main() { struct student { int num; char name[25]; }; student stu; stu.num = 123; strcpy(stu.name, "John"); cout << stu.num << endl; cout << stu.name << endl; return 0; }

1 Mark(s)

Your Answer:

123 john 123 john
john john john john
compile time error compile time error
runtime error runtime error

Which of the following css property should be used to make a responsive image?

1 Mark(s)

Your Answer:

float float
max-width max-width
margin-right margin-right
all of the mentioned all of the mentioned

Conference (Netscape), Netmeeting (Internet Explorer) enables (choose the option that best describes)

1 Mark(s)

Your Answer:

sharing voice on the net sharing voice on the net
live textual conferencing live textual conferencing
live audio conferencing live audio conferencing
live real time conferencing live real time conferencing
None of the above None of the above

What is the output of the given code? boolean_1 = 77<78 puts(boolean_1)

1 Mark(s)

Your Answer:

Nil Nil
True True
False False
Error Error

Which keyword is used to define a module in Ruby?

1 Mark(s)

Your Answer:

include include
def def
module module
class class

External scripts can't take the tag . . . . . . . .

1 Mark(s)

Your Answer:

<script> <script>
<form> <form>
<h1> <h1>
<title> <title>

The main aim of the file system is to support________

1 Mark(s)

Your Answer:

Transparent access to data Transparent access to data
Efficient access to data Efficient access to data
Consistent access to data Consistent access to data
All of the above All of the above

"Ctrl + Home" is used to

1 Mark(s)

Your Answer:

Moves the cursor to the beginning of Document
Moves the cursor to the beginning of Line
Moves the cursor to the beginning of Paragraph
All of the above All of the above

The technology that can be easily adapted for expansion in an organization is:

1 Mark(s)

Your Answer:

ATM ATM
ATM LAN ATM LAN
ATM WAN ATM WAN
ATM MAN ATM MAN

Which class in C# is used to perform synchronous and asynchronous read and write operations to a file in a managed application?

1 Mark(s)

Your Answer:

TextFile TextFile
FileStream FileStream
FileHandler FileHandler
None of the above None of the above

What is the first argument in command line arguments?

1 Mark(s)

Your Answer:

The number of command-line arguments the program was invoked with;
A pointer to an array of character strings that contain the arguments
Nothing Nothing
None of the mentioned None of the mentioned

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Database Systems Mock Test 10 : Question 1 of 51