Ruby Mock Test 12 - Online MCQ Exam

Which one cannot be used to enter data in a cell in MS Excel?

1 Mark(s)

Your Answer:

Pressing tab key Pressing tab key
Pressing arrow key Pressing arrow key
Pressing Esc key Pressing Esc key
clicking the enter button to the formula bar

Computer can run without:

1 Mark(s)

Your Answer:

application software application software
system software system software
operating system operating system
Windows Windows

The ________________ of a specification language indicates how the language represents system requirements?

1 Mark(s)

Your Answer:

semantic domain semantic domain
syntactic domain syntactic domain
sequence sequence
set set

What is the value of the following 8-bit integer after all statements are executed? int x = 1; x = x << 7; x = x >> 7;

1 Mark(s)

Your Answer:

1 1
-1 -1
127 127
Implementation defined Implementation defined

What is the primary function of the MapReduce "Sort" phase?

1 Mark(s)

Your Answer:

Sort and shuffle data Sort and shuffle data
Combine intermediate key-value pairs on the mapper side
Aggregate values on the reducer side Aggregate values on the reducer side
Distribute data to reducers Distribute data to reducers

What is the primary advantage of open addressing over chaining in hash tables?

1 Mark(s)

Your Answer:

Better handling of collisions. Better handling of collisions.
Faster search times in all cases. Faster search times in all cases.
Reduced memory usage. Reduced memory usage.
Simpler implementation. Simpler implementation.

A fixed territory in which authority can exercised is?

1 Mark(s)

Your Answer:

Jurisprudence Jurisprudence
Juristic Juristic
Jurisdiction Jurisdiction
None of these Answer None of these Answer

Which keyword is used to refer to properties or methods within the class itself?

1 Mark(s)

Your Answer:

private private
public public
protected protected
$this $this

The subquery that returns only one tuple containing a single attribute, such subqueries are called:

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Your Answer:

Scalar subqueries Scalar subqueries
Vector subqueries Vector subqueries
Linear subqueries Linear subqueries
Unity subqueries Unity subqueries

What does the << operator do when used with a string in Ruby?

1 Mark(s)

Your Answer:

Appends a character to the end Appends a character to the end
Removes the last character Removes the last character
Concatenates two strings Concatenates two strings
Reverses the string Reverses the string

Which of the following is not a feature of Windows 98?

1 Mark(s)

Your Answer:

It supports Internet Explorer 4.0.1 It supports Internet Explorer 4.0.1
It also supports many peripheral devices USB, DVD
It was the first operating system to use the WDM
It provides multiple firewall It provides multiple firewall

In Java, can an interface extend another interface?

1 Mark(s)

Your Answer:

No, interfaces cannot extend other interfaces
Only if both interfaces have the same methods
Yes, an interface can extend multiple interfaces
Only if the interface is marked as "private"

Diameter of Compact Disk is ________?

1 Mark(s)

Your Answer:

10 cm 10 cm
11 cm 11 cm
12 cm 12 cm
None of these None of these

Press _______ key to display the print dialogue box, in MS Word.

1 Mark(s)

Your Answer:

Ctrl+B Ctrl+B
Alt+P Alt+P
Ctrl+N Ctrl+N
Ctrl+P Ctrl+P

In C, array names act like what?

1 Mark(s)

Your Answer:

Integers Integers
Pointers Pointers
Functions Functions
Structs Structs

FPGA stands for:

1 Mark(s)

Your Answer:

field programmable gate array field programmable gate array
forward programmable gate array forward programmable gate array
forward parallel gate array forward parallel gate array
field parallel gate array field parallel gate array

Which of these keywords is used to by the calling function to guard against the exception that is thrown by called function?

1 Mark(s)

Your Answer:

try try
throw throw
throws throws
catch catch

What is the function of void *memset(s, c, n)?

1 Mark(s)

Your Answer:

places character s into first n characters of c, return c
places character c into first n characters of s, return s
places character s into first n characters of c, return s
places character c into first n character of s, return c

Which of the following is true about JSP implicit objects?

1 Mark(s)

Your Answer:

They are used to execute SQL queries They are used to execute SQL queries
They are used to define JavaBean properties
They are predefined objects available in JSP without any declaration
They are defined using `` They are defined using ``

What is meant by the classes and objects that dependents on each other?

1 Mark(s)

Your Answer:

Tight Coupling Tight Coupling
Cohesion Cohesion
Loose Coupling Loose Coupling
None of the above None of the above

What will be the output of the following C++ code? #include <typeinfo> #include <iostream> using namespace std; class shape { public: virtual void myvirtualfunc() const {} }; class mytriangle: public shape { public: virtual void myvirtualfunc() const { }; }; int main() { shape shape_instance; shape &ref_shape = shape_instance; try { mytriangle &ref_mytriangle = dynamic_cast(ref_shape); } catch (bad_cast) { cout << "Caught: bad_cast exception\n"; } return 0; }

1 Mark(s)

Your Answer:

Caught standard exception Caught standard exception
No exception arises No exception arises
Caught: bad_cast exception Caught: bad_cast exception
Caught: cast Caught: cast

Which of these methods can be used to obtain set of all keys in a map?

1 Mark(s)

Your Answer:

getAll() getAll()
getKeys() getKeys()
keyall() keyall()
keySet() keySet()

The multidimensional data can be categorized by dimension attributes and:

1 Mark(s)

Your Answer:

Measure attributes Measure attributes
Measure tuples Measure tuples
Measure instances Measure instances
Measure relations Measure relations

Accessing an element in a Linked List by index takes?

1 Mark(s)

Your Answer:

O(1) O(1)
O(n) O(n)
O(log n) O(log n)
O(n^2) O(n^2)

For int arr[2][3];, what is type of arr?

1 Mark(s)

Your Answer:

int pointer int pointer
int ()[3] int ()[3]
int & int &
int variable int variable

Each pass through a loop is called a/an

1 Mark(s)

Your Answer:

enumeration enumeration
iteration iteration
culmination culmination
pass through Correct pass through Correct

Digital signals are represented in:

1 Mark(s)

Your Answer:

sine waves sine waves
levels levels
stages stages
cosine waves cosine waves

"Ctrl + O" keys are used by user to:

1 Mark(s)

Your Answer:

extract a file extract a file
open option open option
edit a file edit a file
open a file open a file

Outer join is the same as equi-join, except one of the duplicate columns is eliminated in the result table.

1 Mark(s)

Your Answer:

True True
False False

Which of the following is NOT a typical property of a good hash function?

1 Mark(s)

Your Answer:

Easy to compute. Easy to compute.
Distributes keys uniformly across the hash table.
Minimizes collisions. Minimizes collisions.
Produces random and unpredictable results.

What is the result of the bitwise operation x & (x-1)?

1 Mark(s)

Your Answer:

Sets the last bit Sets the last bit
Inverts the number Inverts the number
Clears lowest set bit Clears lowest set bit
Multiplies by 2 Multiplies by 2

When two or more bulbs are connected in same electrical circuit its called:

1 Mark(s)

Your Answer:

parallel circuit parallel circuit
series circuit series circuit
multiple circuit multiple circuit
complex circuit complex circuit

In Stream Control Transmission Protocol (SCTP), the acknowledgment number and window size is part of each:

1 Mark(s)

Your Answer:

data chunk data chunk
protocol chunk protocol chunk
stream chunk stream chunk
control chunk control chunk

Which basic colors are used in computer graphics?

1 Mark(s)

Your Answer:

GOB GOB
RWG RWG
RGB RGB
BGB BGB

The tags used to tell the browser that how to display the text enclosed (e.g. , ) are called as:

1 Mark(s)

Your Answer:

Physical tags Physical tags
Logical tags Logical tags
User defined tags User defined tags
None None

Which property of a control in a Windows Forms Application is used to specify its position and size within its container?

1 Mark(s)

Your Answer:

Location Location
Size Size
Visible Visible
Text Text

What will be the output of the following Java code? class box { int width; int height; int length; int volume; box() { width = 5; height = 5; length = 6; } void volume() { volume = width*height*length; } } class constructor_output { public static void main(String args[]) { box obj = new box(); obj.volume(); System.out.println(obj.volume); } }

1 Mark(s)

Your Answer:

100 100
150 150
200 200
250 250

What will be the output of the following Python code? print('*', "abcdef".center(7), '*')

1 Mark(s)

Your Answer:

* Abcdef * * Abcdef *
* abcdef * * abcdef *
*abcdef * *abcdef *
* abcdef* * abcdef*

Process of creating exact copy of the existing object is called_______________?

1 Mark(s)

Your Answer:

overloading overloading
overriding overriding
cloning cloning
coping coping

Which of the following allows us to select the screen positions with the touch of a finger?

1 Mark(s)

Your Answer:

Mouse Mouse
Trackball Trackball
Touch panel Touch panel
None of the above None of the above

Stored Procedure is:

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Your Answer:

Saved SQL code Saved SQL code
Table Table
View View
Trigger Trigger

The combination of abstraction of the data and code is viewed in________.

1 Mark(s)

Your Answer:

Inheritance Inheritance
Object Object
Class Class
Interfaces Interfaces

Instructions that are requested by the system are first:

1 Mark(s)

Your Answer:

fetched fetched
decoded decoded
executed executed
deleted deleted

In C++, can a function be both virtual and static at the same time?

1 Mark(s)

Your Answer:

Yes Yes
No No
Yes, but only for member functions. Yes, but only for member functions.
Yes, but only for non-member functions. Yes, but only for non-member functions.

Which of the following is a disadvantage of an array over a linked list?

1 Mark(s)

Your Answer:

Fixed size Fixed size
Dynamic size Dynamic size
Slow access to elements by index Slow access to elements by index
Easier memory allocation Easier memory allocation

What will be the output of the following code: my_list = [3, 1, 2] my_list.sort() print(my_list)

1 Mark(s)

Your Answer:

[1, 2, 3] [1, 2, 3]
[3, 2, 1] [3, 2, 1]
[2, 3, 1] [2, 3, 1]
[1, 3, 2] [1, 3, 2]

What is the output of the following code: def greet(name): print(f"Hello, {name}!") greet("Alice")

1 Mark(s)

Your Answer:

Hello, Alice! Hello, Alice!
Hello, name! Hello, name!
name name
"Hello, {name}!" "Hello, {name}!"

The computer’s processor consists of the following parts___________________?

1 Mark(s)

Your Answer:

CPU and Main Memory CPU and Main Memory
Hard Disk and Floppy Drive Hard Disk and Floppy Drive
Main Memory and Storage Main Memory and Storage
Control Unit and ALU Control Unit and ALU

Which part of the microscope helps in magnifying small particles or microorganisms?

1 Mark(s)

Your Answer:

A) Stage A) Stage
B) Mirror B) Mirror
C) Eyepiece lens C) Eyepiece lens
D) Base D) Base

What should you do if your script is having problem recognizing file endings from a text file saved on a platform different from the one you’re reading it on?

1 Mark(s)

Your Answer:

Change the auto_detect_line_endings INI setting
Use a regular expression to detect the last letter of a line
Use fpos() Use fpos()
Use ftok() Use ftok()
Read the file one character at a time Read the file one character at a time

Which of the following is true concerning systems information in an RDBMS?

1 Mark(s)

Your Answer:

RDBMS store database definition information in system-created tables.
This information can be accessed using SQL.
This information often cannot be updated by a user.
All of the above. All of the above.

The incorrect one is:

1 Mark(s)

Your Answer:

A recursive method must have a base case
Recursion always uses stack Recursion always uses stack
Recursion is always managed by C# Runtime environment
Recursive methods are faster that programmer written loop to call the function repeatedly using a st

How does Spirulina support environmental sustainability?

1 Mark(s)

Your Answer:

A) Fixes nitrogen in roots A) Fixes nitrogen in roots
B) Produces alcohol B) Produces alcohol
C) Produces oxygen and grows in less space
D) Breaks down waste in landfills D) Breaks down waste in landfills

The First page of the website is termed:?

1 Mark(s)

Your Answer:

Homepage Homepage
Index Index
Java Script Java Script
Bookmark Answer Bookmark Answer

Usual waveform of alternating current in most electric power circuits is:

1 Mark(s)

Your Answer:

cosine wave cosine wave
sine wave sine wave
cot wave cot wave
tangential wave tangential wave

To extend the connectivity of the processor bus we use:

1 Mark(s)

Your Answer:

PCI bus PCI bus
SCSI bus SCSI bus
controllers controllers
multiple bus multiple bus

The statement printf(“%3.6f”, j); prints the value of j correct to:?

1 Mark(s)

Your Answer:

two places two places
four places four places
six places six places
gives an error message Answer gives an error message Answer

The Internet Protocol (IP) packet that carries an Internet Group Management Protocol (IGMP) packet has a value of:

1 Mark(s)

Your Answer:

0 0
1 1
2 2
-1 -1

Which node is the parent node of Node 6?

1 Mark(s)

Your Answer:

1 1
5 5
2 2
3 3

Evaluating Your Answers

Ruby Mock Test 12 : Question 1 of 59