Ruby Mock Test 2 - Online MCQ Exam

The period of a signal is 100 ms. What is its frequency in kilohertz?

1 Mark(s)

Your Answer:

100 Hz 100 Hz
1 kHz 1 kHz
10 Hz 10 Hz
0.02 Hz 0.02 Hz

Why the bridge can use the spanning-tree algorithm?

1 Mark(s)

Your Answer:

to create a loopless topology to create a loopless topology
filter frame filter frame
to regenerate a signal to regenerate a signal
discarding frame discarding frame

In Ruby, what is a superclass?

1 Mark(s)

Your Answer:

The class from which a class inherits The class from which a class inherits
The class that inherits from another class
The class that contains all other classes
The class that has no superclass The class that has no superclass

What will be the output of the following C code? #include <stdio.h> struct student { char *c; struct student *point; }; void main() { struct student s; struct student m; m.point = s; (m.point)->c = "hey"; printf("%s", s.c); }

1 Mark(s)

Your Answer:

Nothing Nothing
Compile time error Compile time error
hey hey
Varies Varies

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

Employees in an office is human's:

1 Mark(s)

Your Answer:

object object
entity entity
data type data type
object object

MD5 produces a hash of:

1 Mark(s)

Your Answer:

128 bits 128 bits
160 bits 160 bits
256 bits 256 bits
512 bits 512 bits

SQL has clearly established itself as the standard relational:

1 Mark(s)

Your Answer:

Database process Database process
Database language Database language
Database storage Database storage
Database manager Database manager

When was the MS Windows operating system introduced?

1 Mark(s)

Your Answer:

1975 1975
1985 1985
1990 1990
2000 Answer 2000 Answer

Which method is used to separate pebbles and stones from sand?

1 Mark(s)

Your Answer:

A) Handpicking A) Handpicking
B) Winnowing B) Winnowing
C) Sieving C) Sieving
D) Any of these D) Any of these

What will be the output of the following Python code? 'The {} side {1} {2}'.format('bright', 'of', 'life')

1 Mark(s)

Your Answer:

Error Error
'The bright side of life' 'The bright side of life'
'The {bright} side {of} {life}' 'The {bright} side {of} {life}'
No output No output

Min heap can be used to implement selection sort.

1 Mark(s)

Your Answer:

True True
False False

Which of the following special type of trie is used for fast searching of the full texts?

1 Mark(s)

Your Answer:

Ctrie Ctrie
Hash tree Hash tree
Suffix tree Suffix tree
T tree T tree

The ratio of the intensity of broadband and narrow band gives a measure of:

1 Mark(s)

Your Answer:

crystalline ratio crystalline ratio
non crystalline ration non crystalline ration
both a and b both a and b
limited/non limited frequency limited/non limited frequency

What does the start_of_week method do for a Date object in Ruby?

1 Mark(s)

Your Answer:

Returns the day of the week for the Date object
Returns the middle day of the week for the Date object
Returns the last day of the week for the Date object
Returns the first day of the week for the Date object

What is the correct syntax to declare a structure with a tag name in C++?

1 Mark(s)

Your Answer:

structName { /* members */ }; structName { /* members */ };
struct { /* members */ } structName; struct { /* members */ } structName;
structName typedef { /* members */ }; structName typedef { /* members */ };
struct structName { /* members */ }; struct structName { /* members */ };

What is the output of the code: x = 1 while x

1 Mark(s)

Your Answer:

1 2 3 4 1 2 3 4
1 1 1 1 1 1 1 1
2 3 4 5 2 3 4 5
2 2 2 2 2 2 2 2

Which of the following property defines the width of each column in a multicolumn text flow?

1 Mark(s)

Your Answer:

width width
columns columns
filter filter
column-width column-width

What will be the output of the following Java program? import java.io.*; class Chararrayinput { public static void main(String[] args) { String obj = "abcdef"; int length = obj.length(); char c[] = new char[length]; obj.getChars(0, length, c, 0); CharArrayReader input1 = new CharArrayReader(c); CharArrayReader input2 = new CharArrayReader(c, 0, 3); int i; try { while((i = input2.read()) != -1) { System.out.print((char)i); } } catch (IOException e) { e.printStackTrace(); } } }

1 Mark(s)

Your Answer:

abc abc
abcd abcd
abcde abcde
abcdef abcdef

How does Hadoop support encryption in transit for data transmitted between nodes in a cluster?

1 Mark(s)

Your Answer:

Running Hadoop in an open network mode Running Hadoop in an open network mode
Increasing the block size in HDFS Increasing the block size in HDFS
Disabling encryption for Hadoop nodes Disabling encryption for Hadoop nodes
Enabling SSL/TLS for communication Enabling SSL/TLS for communication

Consider the expression T & F ∧ T. What is the number of ways in which the expression can be parenthesized so that the output is T (true)?

1 Mark(s)

Your Answer:

0 0
1 1
2 2
3 3

Can a class be declared with a protected modifier.

1 Mark(s)

Your Answer:

True True
False False

Which of the following operations is used to restore balance in an AVL tree after insertion?

1 Mark(s)

Your Answer:

Merging Merging
Splaying Splaying
Rotations Rotations
Hashing Hashing

Which of the following are disadvantages of using NAT? 1. Translation introduces switching path delays. 2. Conserves legally registered addresses. 3. Causes loss of end-to-end IP traceability. 4. Increases flexibility when connecting to the Internet. 5. Certain applications will not function with NAT enabled. 6. Reduces address overlap occurrence.

1 Mark(s)

Your Answer:

1, 3 and 5 1, 3 and 5
3 and 4 3 and 4
2, 4 and 5 2, 4 and 5
1 and 3 1 and 3

Shifting to the left is accomplished by:

1 Mark(s)

Your Answer:

addition addition
subtraction subtraction
multiplication multiplication
division division

Which data structure is used for implementing a FIFO branch and bound strategy?

1 Mark(s)

Your Answer:

stack stack
queue queue
array array
linked list linked list

Which of the following is the best way to create a duplicate slide?

1 Mark(s)

Your Answer:

Click the slide and select it using Ctrl + A, then copy it and paste it into new slide.
Redo everything on new slide Redo everything on new slide
Choose duplicate slide from insert slide
None of the above None of the above

Feature of Windows 98 which enables users to integrate internet resources directly on the Windows desktop is:

1 Mark(s)

Your Answer:

plug and play plug and play
internet explorer internet explorer
START button START button
active desktop active desktop

What is it called when we make a mistake in the script?

1 Mark(s)

Your Answer:

Error Error
Bug Bug
Mistake Mistake
All of the mentioned All of the mentioned

A large memory can further be installed, known as:

1 Mark(s)

Your Answer:

conventional conventional
primary memory primary memory
expanded memory expanded memory
ROM ROM

Which of the following statements about exception handling in C++ is correct?

1 Mark(s)

Your Answer:

It is an alternative to error codes It is an alternative to error codes
It is faster and more efficient than error codes
It is used only for compile-time errors It is used only for compile-time errors
It cannot handle runtime errors It cannot handle runtime errors

In Ms Excel, which of the following special function keys allow the content in cell?

1 Mark(s)

Your Answer:

Shift Shift
Esc Esc
Tab Tab
Space Space

What is the time complexity of search function in a hash table using a doubly linked list?

1 Mark(s)

Your Answer:

O(1) O(1)
O(n) O(n)
O(log n) O(log n)
O(n log n) O(n log n)

Which keyword allows exception handling?

1 Mark(s)

Your Answer:

jump jump
throw throw
catch catch
error error

Which of the following methods cannot be used to enter data in a cell

1 Mark(s)

Your Answer:

Pressing an arrow key Pressing an arrow key
Pressing the Tab key Pressing the Tab key
Pressing the Esc key Pressing the Esc key
Clicking on the formula bar Clicking on the formula bar

The _____ option is used to show a specific row or column on every printed page.

1 Mark(s)

Your Answer:

print layout print layout
print title print title
print view print view
none none

Secondary Memory is also called:?

1 Mark(s)

Your Answer:

Random Access Memory Random Access Memory
Internal Memory Internal Memory
External Memory External Memory
None of these Answer None of these Answer

A computer device which sends the message is termed as:

1 Mark(s)

Your Answer:

sending device sending device
source transmitter source transmitter
both A and B both A and B
communication device communication device

The operating system is the most common type of ...... Software

1 Mark(s)

Your Answer:

Communication Communication
Application Application
System System
Word processing software Word processing software

Mean density of Earth is:

1 Mark(s)

Your Answer:

2320 kg/m3 2320 kg/m3
1410 kg/m3 1410 kg/m3
5520 kg/m3 5520 kg/m3
3340 kg/m3 3340 kg/m3

What is the purpose of the "return" statement in a method in Java?

1 Mark(s)

Your Answer:

To specify the method's access modifier To specify the method's access modifier
To indicate that the method should return a value
To stop the execution of the program To stop the execution of the program
To indicate the method is static To indicate the method is static

Mouse, keyboard, disk drives and printers are basic elements of:

1 Mark(s)

Your Answer:

circuit design-user environment circuit design-user environment
automobile-user environment automobile-user environment
economical environment economical environment
computer-user environment computer-user environment

In Point to Point Protocol, the framing techniques done according to the:

1 Mark(s)

Your Answer:

Bit oriented Protocol Bit oriented Protocol
Byte oriented Protocol Byte oriented Protocol
High-level Data Link Protocol High-level Data Link Protocol
Link Control Protocol Link Control Protocol

What will be the output of the following PHP code ? <?php $x = 10; $y = 20; if ($x > $y + $y != 3) print "hi" ; else print "how are u"; ?>

1 Mark(s)

Your Answer:

how are u how are u
hi hi
error error
no output no output

Which of the following transition-timing-function property specifies a transition effect with a slow start?

1 Mark(s)

Your Answer:

ease ease
ease-in ease-in
ease-in-out ease-in-out
none of the mentioned none of the mentioned

Which of the following is not a tool used by search engines for searching?

1 Mark(s)

Your Answer:

URL URL
Search Algorithm Search Algorithm
Indexer Indexer
Crawle Crawle

In C++, the operator used to access members via a pointer is:

1 Mark(s)

Your Answer:

Dot (.) Dot (.)
Arrow (->) Arrow (->)
Star (*) Star (*)
Ampersand (&) Ampersand (&)

What is the purpose of using snake_case for method and variable names in Ruby?

1 Mark(s)

Your Answer:

To make the code more challenging to read
To indicate private methods and variables
To emphasize the importance of the code To emphasize the importance of the code
To improve readability and maintain consistency

Types of computer impact printer are:

1 Mark(s)

Your Answer:

dot matrix printers dot matrix printers
daisy wheel printers daisy wheel printers
line printers line printers
all of these all of these

A Chatbot is an example of:

1 Mark(s)

Your Answer:

AI AI
OS OS
Compiler Compiler
Database Database

The algorithm given is for deleting an element in an unrolled linked list. What should be the correct statement for the blank given below? Find an element in node a a.data.delete(element) a.elementNum-- while a.elementNum < a.data.size / 2 put element from a.next.data in a.data a.next.elementNum-- a.elementNum++ if a.next.elementNum < a.next.data.size / 2 _______________________ _______________________

1 Mark(s)

Your Answer:

merge nodes a and a.next delete node a.next
delete node a merge nodes a.prev and a.next
a.elementNum-- a.elementNum++ a.elementNum-- a.elementNum++
a.next.elementNum-- a.next.elementNum++

Which of the following is the correct way to create a string in Python?

1 Mark(s)

Your Answer:

"Hello, World!" "Hello, World!"
'Hello, World!' 'Hello, World!'
"Hello, World!' "Hello, World!'
'Hello, World!" 'Hello, World!"

Evaluating Your Answers

Ruby Mock Test 2 : Question 1 of 52