Web Development Mock Test 12

What will be the output of the following Python code? a = [5,5,6,7,7,7] b = set(a) def test(lst): if lst in b: return 1 else: return 0 for i in filter(test, a): print(i,end=" ")

1 Mark(s)

Your Answer:

5 5 6 5 5 6
5 6 7 5 6 7
5 5 6 7 7 7 5 5 6 7 7 7
5 6 7 7 7 5 6 7 7 7

What is the direct consequence of eutrophication in an aquatic ecosystem?

1 Mark(s)

Your Answer:

A) Excessive growth of algae leading to oxygen depiction
B) Increase in the depth of the ocean floor
C) Gradual cooling of the water body’s temperature
D) Rapid increase in clean drinking water resources.

What is the output of the given code? if 11>2 puts "Eleven is greater than two" end print "You'r right"

1 Mark(s)

Your Answer:

Eleven is greater than two Eleven is greater than two
You'r right You'r right
Eleven is greater than two You'r right Eleven is greater than two You'r right
None of the mentioned None of the mentioned

What is the result of the expression ptr = NULL in C, where ptr is a pointer?

1 Mark(s)

Your Answer:

Initialize ptr to 0 Initialize ptr to 0
Delete the pointer ptr Delete the pointer ptr
Set ptr to a random address Set ptr to a random address
It's not a valid operation It's not a valid operation

Data scrubbing can help upgrade data quality; it is not a long-term solution to the data quality problem.

1 Mark(s)

Your Answer:

True True
False False

Given Adjacency matrices determine which of them are PseudoGraphs? i. {{1,0} {0,1}} ii. {{0,1}{1,0}} iii. {{0,0,1}{0,1,0}{1,0,0}}

1 Mark(s)

Your Answer:

only i only i
ii and iii ii and iii
i and iii i and iii
i, ii and iii i, ii and iii

What is the primary difference between a std::mutex and a std::spinlock in C++ multi-threading?

1 Mark(s)

Your Answer:

std::spinlock is a blocking synchronization primitive, while std::mutex is a non-blocking synchronization primitive
They both provide the same functionality
std::mutex is a blocking synchronization primitive, while std::spinlock is a non-blocking synchronization primitive
std::spinlock is more efficient than std::mutex

: What is the output of the following code in Python? array = [[1, 2], [3, 4]]; print(array[1][0])

1 Mark(s)

Your Answer:

1 1
2 2
3 3
4 4

What constant defined in <climits> header returns the number of bits in a char?

1 Mark(s)

Your Answer:

CHAR_SIZE CHAR_SIZE
SIZE_CHAR SIZE_CHAR
BIT_CHAR BIT_CHAR
CHAR_BIT CHAR_BIT

What is the purpose of minifying the JavaScript?

1 Mark(s)

Your Answer:

To streamline the visits To streamline the visits
To save the visits To save the visits
All of the mentioned All of the mentioned
None of the mentioned None of the mentioned

Can suffix tree be used in string problems occurring in a text editor.

1 Mark(s)

Your Answer:

True True
False False

In R, what does the function length() do?

1 Mark(s)

Your Answer:

Returns the sum of elements Returns the sum of elements
Returns the number of elements Returns the number of elements
Sorts the elements Sorts the elements
Computes the mean Computes the mean

What is the problem statement for the N Queens problem?

1 Mark(s)

Your Answer:

To put N queens on an NxN chessboard so that no two queens attack each other.
The minimum quantity of chess board squares will be calculated if we place the queens on the N*N chess board.
To check the total number of queens that can be positioned in an N×N chessboard
Determine a board of size N×N presenting the shortest route that a queen can follow to get from one position to another.

Correct way to find if contents of two strings are equal is:

1 Mark(s)

Your Answer:

if (s1 = s2) if (s1 = s2)
if (s1 != s2) if (s1 != s2)
if (strcmp (s1 ,s2)) if (strcmp (s1 ,s2))
if ( s1 is s2) if ( s1 is s2)

A hexadecimal literal begins with

1 Mark(s)

Your Answer:

00 00
0x 0x
0X 0X
Both 0x and 0X Both 0x and 0X

The session layer of OSI model is responsible for:

1 Mark(s)

Your Answer:

Synchronization Synchronization
Error control Error control
Framing Framing
Access control Access control

The global assembly cache:

1 Mark(s)

Your Answer:

Can store two dll files with the same name
Can store two dll files with the same name, but different version
Can store two dll files with the same name and same version
Can not store dll files with the same name

For making a hyperlink, what is the correct HTML?

1 Mark(s)

Your Answer:

Quiz 1 Quiz 1
url=”https://t4tutorials.com“>Quiz 2
https://t4tutorials.com https://t4tutorials.com
none of these none of these

Photosynthesis is a process in which carbon dioxide and water combine to form:

1 Mark(s)

Your Answer:

carbon carbon
calcium calcium
chlorophyll chlorophyll
carbohydrates carbohydrates

Kepler's law of period for Venus is:

1 Mark(s)

Your Answer:

248y 248y
0.615y 0.615y
165y 165y
1.88y 1.88y

Where is the R.java file located?

1 Mark(s)

Your Answer:

src src
gen gen
Both A and B Both A and B
None of these None of these

Which data structure is commonly used for efficiently handling fixed-size collections with frequent lookups?

1 Mark(s)

Your Answer:

Stack Stack
Array Array
Hash Map Hash Map
Stack Stack

Assume you would like to sort an array in ascending order by value while preserving key associations. Which of the following PHP sorting functions would you use?

1 Mark(s)

Your Answer:

ksort() ksort()
asort() asort()
krsort() krsort()
sort() sort()
usort() usort()

Which device is a Multi-port Repeater?

1 Mark(s)

Your Answer:

Hub Hub
Switch Switch
Router Router
Bridge Bridge

How do you declare a one-dimensional array in Java?

1 Mark(s)

Your Answer:

int[] myArray; int[] myArray;
int myArray[]; int myArray[];
Array myArray; Array myArray;
All of the above All of the above

What is the purpose of the 'decltype' keyword in C++?

1 Mark(s)

Your Answer:

Determines the type of an expression or variable
Declares the type of a function parameter
Specifies the type of a function's return value
Returns the size of a data type Returns the size of a data type

In the N Queens problem, how many possible positions are there for placing the first queen on an N×N chessboard?

1 Mark(s)

Your Answer:

N N
N^2 N^2
N/2 N/2
2^N 2^N

The original argument is modified Which parameter passing mechanism is more memory-efficient for large data structures?

1 Mark(s)

Your Answer:

Call by value Call by value
Call by reference Call by reference
Call by value-return Call by value-return
Call by copy Call by copy

What does the term "lexical scope" refer to in Ruby?

1 Mark(s)

Your Answer:

The scope determined by the order of execution of statements
The scope determined by the visibility of variables and methods in the current context
The scope determined by where variables and methods are defined in the source code
The scope determined by the order of creation of objects

Printer which uses dry ink powder is:

1 Mark(s)

Your Answer:

daisy wheel daisy wheel
line line
laser laser
thermal thermal

The function of Alt + Tab on the keyboard is?

1 Mark(s)

Your Answer:

Switch between open program Switch between open program
Switch between close program Switch between close program
Both Both
Active search Active search

If expression. The expression can be of which type?

1 Mark(s)

Your Answer:

True True
Any number Any number
Any string Any string
All of the mentioned All of the mentioned

DNA is a substance that makes up the foundations of:

1 Mark(s)

Your Answer:

nucleus nucleus
cell membrane cell membrane
vacuole vacuole
mitochondria mitochondria

Which is an example of WAN?

1 Mark(s)

Your Answer:

Share it Share it
Mobile broadband connections Mobile broadband connections
Bluetooth Bluetooth
VPN VPN

Each margin is considered to have a number of . . . . . . . .

1 Mark(s)

Your Answer:

Test Test
Text lines Text lines
Line segment Line segment
Margins Margins

What is the result of the expression string[] names = {"John", "Alice", "Bob"}; in C#?

1 Mark(s)

Your Answer:

A compilation error A compilation error
Declares an array with three elements Declares an array with three elements
Initializes an empty array Initializes an empty array
Initializes an array with three elements

Helium is a/an:

1 Mark(s)

Your Answer:

ion ion
electron electron
strong atom strong atom
light atom light atom

A derived element is typically shown by placing either a slash (/) or a stereotype of <> before the name of the element.

1 Mark(s)

Your Answer:

True True
False False

Data integrity is the process of protecting data from unauthorized:

1 Mark(s)

Your Answer:

Access Access
Control Control
Modification Modification
Interruption Interruption

Want your logo in the same position on every slide, automatically? Insert it on the

1 Mark(s)

Your Answer:

Handout master Handout master
Notes master Notes master
Slide master Slide master
All of the above All of the above

What does the attr_accessor method do in Ruby OOP?

1 Mark(s)

Your Answer:

Creates constructor methods Creates constructor methods
Creates only a writer method Creates only a writer method
Creates only a reader method Creates only a reader method
Creates both reader and writer methods for class attributes

Control panel in aspiration cage controls the:

1 Mark(s)

Your Answer:

opening opening
speed speed
quantity of waste material quantity of waste material
all of above all of above

Prevention is better than:

1 Mark(s)

Your Answer:

medicine medicine
cure cure
measures measures
results results

If the condition in IF statement is TRUE then:

1 Mark(s)

Your Answer:

the statements execute the statements execute
program will be finished program will be finished
call a method call a method
solve an expression solve an expression

In which one of the following, the multiple lower entities are grouped (or combined) together to form a single higher-level entity?

1 Mark(s)

Your Answer:

Specialization Specialization
Generalization Generalization
Aggregation Aggregation
None of the above None of the above

If large number of items are stored in hash bucket, what happens to the internal structure?

1 Mark(s)

Your Answer:

The bucket will switch from LinkedList to BalancedTree
The bucket will increase its size by a factor of load size defined
The LinkedList will be replaced by another hashmap
Any further addition throws Overflow exception

What is the storage duration of a variable with 'static' storage class?

1 Mark(s)

Your Answer:

Automatic Automatic
Register Register
External External
Static Static

Perceptual encoding is based on the science of:

1 Mark(s)

Your Answer:

frames frames
music music
rhythm rhythm
psychoacoustics psychoacoustics

Which keyword prevents a variable from being modified?

1 Mark(s)

Your Answer:

const const
static static
volatile volatile
final final

ask=T is a parameter that R asks before producing the . . . . . . . .

1 Mark(s)

Your Answer:

function function
package package
interface interface
graphics graphics

In chain of cellulose, hydroxyl groups are interlinked by means of:

1 Mark(s)

Your Answer:

coordinate bonds coordinate bonds
strong bonds strong bonds
hydrogen bonds hydrogen bonds
weak bonds weak bonds

What does the 'default' case represent in a 'switch' statement in C++?

1 Mark(s)

Your Answer:

Terminates the switch block Terminates the switch block
Executes only when all other cases match
Executes after every other case Executes after every other case
Executes when no other case matches Executes when no other case matches

Feature which helps the user to insert the contents of clipboard as text without any formatting is:

1 Mark(s)

Your Answer:

paste special paste special
format painter format painter
page set up page set up
style style

Minimum threads in a program are________________?

1 Mark(s)

Your Answer:

0 0
1 1
2 2
3 3

Hexadecimal number system is used as a shorthand language to represent:

1 Mark(s)

Your Answer:

decimal numbers decimal numbers
binary numbers binary numbers
octal numbers octal numbers
urinary numbers urinary numbers

Vernier caliper helps in measuring:

1 Mark(s)

Your Answer:

external diameter external diameter
internal diameter internal diameter
thickness and depth of narrow tubes thickness and depth of narrow tubes
all of them all of them

What does the Android system use for status data?

1 Mark(s)

Your Answer:

Content provider Content provider
Intents Intents
Network Network
None of these None of these

Leaf nodes in a parse tree indicate?

1 Mark(s)

Your Answer:

sub-terminals sub-terminals
half-terminals half-terminals
non-terminals non-terminals
terminals terminals

What will be the output of the following PHP code? <?php echo str_pad("Salad", 5)." is good."; ?>

1 Mark(s)

Your Answer:

SaladSaladSaladSaladSalad is good SaladSaladSaladSaladSalad is good
is good SaladSaladSaladSaladSalad is good SaladSaladSaladSaladSalad
is good Salad is good Salad
Salad is good Salad is good

Internet addresses are usually written in:

1 Mark(s)

Your Answer:

binary notation binary notation
dotted hexa notation dotted hexa notation
octant notation octant notation
dotted decimal notation dotted decimal notation

In R, which package is commonly used for Bayesian analysis of hierarchical models?

1 Mark(s)

Your Answer:

BHM BHM
brms brms
hbayes hbayes
bayesR bayesR

Which command is used to install gems listed in a Gemfile.lock file?

1 Mark(s)

Your Answer:

install Gemfile.lock install Gemfile.lock
bundle install bundle install
gem bundle install gem bundle install
None of the above None of the above

The type of comments in c# are:

1 Mark(s)

Your Answer:

Single Line Comment E.g. : // Single Line Comment E.g. : //
Multiline Comments E.g.: /* */ Multiline Comments E.g.: /* */
XML Comments E.g. : /// XML Comments E.g. : ///
All of the above All of the above

Consider the 2-level skip list How to access 38?

1 Mark(s)

Your Answer:

travel 20-30-35-38 travel 20-30-35-38
travel 20-30-40-38 travel 20-30-40-38
travel 20-38 travel 20-38
travel 20-40-38 travel 20-40-38

Which function is used to simulate discrete uniform random variables?

1 Mark(s)

Your Answer:

Sample Sample
Simple Simple
Function Function
Variance Variance

Which of the following term is used to keep track of the location where the current values of the name are stored?

1 Mark(s)

Your Answer:

Register descriptor Register descriptor
Address descriptor Address descriptor
Allocation descriptor Allocation descriptor
Flag register Flag register

What will be the output of the following Java program? class evaluate { public static void main(String args[]) { int a[] = {1,2,3,4,5}; int d[] = a; int sum = 0; for (int j = 0; j

1 Mark(s)

Your Answer:

38 38
39 39
40 40
41 41

Correct syntax for $.post() method is . . . . . . . .

1 Mark(s)

Your Answer:

$.post(URL,data,callback) $.post(URL,data,callback)
$.post(URL,data) $.post(URL,data)
$.post(URL,callback) $.post(URL,callback)
$.post(data,callback) $.post(data,callback)

A system is using Non Return-to-zero-invert (NRZ-I) to transfer 10-Mbps data. What would be minimum bandwidth?

1 Mark(s)

Your Answer:

500 kHz 500 kHz
1000 kHz 1000 kHz
2000 kHz 2000 kHz
5000 kHz 5000 kHz

What is the mode of b in the following R code? b <- c(TRUE, TRUE, 1)

1 Mark(s)

Your Answer:

Numeric Numeric
Character Character
Integer Integer
Logical Logical

When resistances are in parallel, they have:

1 Mark(s)

Your Answer:

same current same current
same inductance same inductance
same potential difference same potential difference
same capacitance same capacitance

Evaluating Your Answers

Web Development Mock Test 12 : Question 1 of 71