Database Systems Mock Test 16

The IPv4 header size _______.

1 Mark(s)

Your Answer:

20 to 60 bytes long 20 to 60 bytes long
20 bytes long 20 bytes long
60 bytes long 60 bytes long
None of the above None of the above

The Data structure used in standard implementation of Breadth First Search is?

1 Mark(s)

Your Answer:

Stack Stack
Queue Queue
Linked List Linked List
Tree Tree

IP Spoofing involves:

1 Mark(s)

Your Answer:

Faking IP Faking IP
Stealing IP Stealing IP
Blocking IP Blocking IP
Encrypting IP Encrypting IP

What is the purpose of the --version flag when installing a gem using the gem install command in Ruby?

1 Mark(s)

Your Answer:

Installs the gem without checking for dependencies
Installs a specific version of Ruby Installs a specific version of Ruby
Installs the latest version of the gem Installs the latest version of the gem
Specifies the version of the gem to be installed

How is a list created in R?

1 Mark(s)

Your Answer:

list(a = 1, b = "hello", c = TRUE) list(a = 1, b = "hello", c = TRUE)
c(1, "hello", TRUE) c(1, "hello", TRUE)
data.frame(a = 1, b = "hello", c = TRUE)
matrix(c(1, "hello", TRUE), nrow = 1) matrix(c(1, "hello", TRUE), nrow = 1)

Scalar product of A and B is written as:

1 Mark(s)

Your Answer:

AB AB
A.B A.B
AxB AxB
AoB AoB

In PowerPoint, the dotted areas in an empty slide are called?

1 Mark(s)

Your Answer:

Template Template
Placeholders Placeholders
Theme Theme
None of these None of these

The ..... displays the name of every computer user on the computer

1 Mark(s)

Your Answer:

Wish list screen Wish list screen
Command screen Command screen
Welcome screen Welcome screen
None of the above None of the above

. . . . . . . . can change the maximum number of cells of a column family.

1 Mark(s)

Your Answer:

set set
reset reset
alter alter
select select

What is the purpose of the 'strcpy' function in C?

1 Mark(s)

Your Answer:

Copies one string to another Copies one string to another
Compares two strings Compares two strings
Searches for a substring Searches for a substring
Converts a string to an integer Converts a string to an integer

Which maven plugin creates the project structure?

1 Mark(s)

Your Answer:

dependency dependency
properties properties
archetype archetype
execution execution

Which of the following adds default styles for dropdown menu container?

1 Mark(s)

Your Answer:

.dropdown-menu .dropdown-menu
.dropdown-toggle .dropdown-toggle
.dropdown-menu-right .dropdown-menu-right
.dropdown .dropdown

The maximum margins can be set in MS Excel are ____________?

1 Mark(s)

Your Answer:

02 (Normal & Wide margins) 02 (Normal & Wide margins)
04 (Normal, Wide, Narrow & Moderate 04 (Normal, Wide, Narrow & Moderate
03 ( Normal, Wide & Narrow) 03 ( Normal, Wide & Narrow)
Just one margin Just one margin

In order to restrict a variable of a class from inheriting to subclass, how variable should be declared?

1 Mark(s)

Your Answer:

Protected Protected
Private Private
Public Public
Static Static

If a charge particle is located inside a shell of uniform charge, net electrostatic force on the particle from the shell is:

1 Mark(s)

Your Answer:

0 C 0 C
1 C 1 C
∞ C ∞ C
100 C 100 C

Which Flip-Flop is used for Delay?

1 Mark(s)

Your Answer:

SR SR
JK JK
D D
T T

For every relationship, how many possible sets of minimum cardinalities are there?

1 Mark(s)

Your Answer:

Two Two
Three Three
Four Four
Six Six

Lexical Analyzer produces:

1 Mark(s)

Your Answer:

Code Code
Tokens Tokens
Tree Tree
Error Error

Which algorithm in C++ STL is used to count the number of occurrences of a value in a range?

1 Mark(s)

Your Answer:

count count
find find
search search
find_count find_count

Use Case Diagrams depicts:

1 Mark(s)

Your Answer:

Functionality Functionality
Class Structure Class Structure
Deployment Deployment
Timing Timing

What is the significance of the 'volatile' keyword in C?

1 Mark(s)

Your Answer:

Declare a constant Declare a constant
Indicate a volatile variable Indicate a volatile variable
Allocate memory Allocate memory
Skip the current iteration Skip the current iteration

Which of the following is an application of linked lists?

1 Mark(s)

Your Answer:

Implementing stacks Implementing stacks
Implementing queues Implementing queues
Both A and B Both A and B
None of the above None of the above

Chukwa is . . . . . . . . data collection system for managing large distributed systems.

1 Mark(s)

Your Answer:

open source open source
proprietary proprietary
service based service based
none of the mentioned none of the mentioned

Which of the following are the uses of the PowerPoint presentation?

1 Mark(s)

Your Answer:

It can be used for project presentations
Communication of planning Communication of planning
Used to represent the data in an attractive way
All of the above All of the above

In a computer spreadsheet, function which is used to get the minimum value is called:

1 Mark(s)

Your Answer:

Max Max
Min Min
Minimum Minimum
Lower Lower

Which one of the following can be defined as the data object which does not comply with the general behavior (or the model of available data)?

1 Mark(s)

Your Answer:

Evaluation Analysis Evaluation Analysis
Outliner Analysis Outliner Analysis
Classification Classification
Prediction Prediction

Which of the following statements are correct about exception handling in C#.NET:

1 Mark(s)

Your Answer:

try blocks cannot be nested. try blocks cannot be nested.
In one function, there can be only one try block.
An exception must be caught in the same function in which it is thrown.
All values set up in the exception object are available in the catch block.

What is the result of the following code snippet? class Parent { protected void display() { System.out.println("Parent"); } } class Child extends Parent { void show() { display(); } } public class Main { public static void main(String[] args) { Child obj = new Child(); obj.show(); } }

1 Mark(s)

Your Answer:

Compilation error Compilation error
Runtime exception Runtime exception
Child Child
Parent Parent

In HBase, what is the role of the HBase Snapshots feature?

1 Mark(s)

Your Answer:

A distributed file system A distributed file system
A query language for HBase A query language for HBase
A storage format in Hadoop A storage format in Hadoop
Create point-in-time backups of HBase tables

Man-made sources of light includes:

1 Mark(s)

Your Answer:

oil lamp oil lamp
burning wood burning wood
fireworks fireworks
all of them all of them

What is the method used to check the data type of a variable in Ruby?

1 Mark(s)

Your Answer:

.type .type
.typeof .typeof
.class .class
.datatype .datatype

What is true about a break?

1 Mark(s)

Your Answer:

Break stops the execution of entire program
Break halts the execution and forces the control out of the loop
Break forces the control out of the loop and starts the execution of next iteration
Break halts the execution of the loop for certain time frame

Boolean comparison operators are also called:

1 Mark(s)

Your Answer:

Arithmetic Operators Arithmetic Operators
Relational Operators Relational Operators
Bitwise Operators Bitwise Operators
Logical operators Logical operators

Suppose you are working on page 5 and you want to start a new text on page 6. Which is the best way to move to the next page?

1 Mark(s)

Your Answer:

Use a page break at page 6 Use a page break at page 6
Keep pressing the “Enter” key until you reach page 6
Use a page break at page 5 Use a page break at page 5
None of these None of these

Study the following statement z = {"x":0, "y":1} Which of the following is the correct statement? ``` z = {"x":0, "y":1} ```

1 Mark(s)

Your Answer:

x dictionary z is created x dictionary z is created
x and y are the keys of dictionary z x and y are the keys of dictionary z
0 and 1 are the values of dictionary z 0 and 1 are the values of dictionary z
All of the above All of the above

What is the process of creating a new class using an existing class as a base in C++?

1 Mark(s)

Your Answer:

Base class Base class
Derived object Derived object
Derived class Derived class
Base object Base object

-------- testing is used to check the code?

1 Mark(s)

Your Answer:

Grey box testing Grey box testing
Black box testing Black box testing
White-box testing White-box testing
Red box testing Red box testing

Which metacharacter is used to specify character ranges in a regular expression in Ruby?

1 Mark(s)

Your Answer:

() ()
{} {}
[] []
<> <>

A group of quantities as functions of one or more independent variables called:

1 Mark(s)

Your Answer:

Parenthesis Parenthesis
Parameters Parameters
Functions Functions
Solutions Solutions

In Carrier Sense Multiple Access (CSMA), the possibility of collision still exists because of:

1 Mark(s)

Your Answer:

propagation delay propagation delay
sender-receiver delay sender-receiver delay
sense delay sense delay
transmit delay transmit delay

How can you update data in a database table using SQL?

1 Mark(s)

Your Answer:

Using the UPDATE statement Using the UPDATE statement
Using the MODIFY statement Using the MODIFY statement
Using the ALTER statement Using the ALTER statement
Using the EDIT statement Using the EDIT statement

What is the output of the following code snippet? for (int m = 0; m

1 Mark(s)

Your Answer:

0 2 4 0 2 4
2 4 2 4
0 1 3 4 0 1 3 4
0 1 2 3 4 0 1 2 3 4

Which of these access specifier must be used for class so that it can be inherited by another subclass?

1 Mark(s)

Your Answer:

public public
private private
protected protected
none of the mentioned none of the mentioned

What will be the output of the following C code? #include <stdio.h> void main() { float x = 0.1; if (x == 0.1) printf("India"); else printf("Advanced C Classes"); }

1 Mark(s)

Your Answer:

Advanced C Classes Advanced C Classes
India India
Run time error Run time error
Compile time error Compile time error

The element shared by a channel in a multipoint environment, is known as its:

1 Mark(s)

Your Answer:

Duration Duration
Capacity Capacity
Structure Structure
Flexibility Flexibility

A disk content that is recorded at the time of manufacture and that cannot be changed or erased by the user is ______________________?

1 Mark(s)

Your Answer:

run-only run-only
read-only read-only
write-only write-only
memory-only memory-only

In which of the following form the plants absorb the nitrogen from the atmosphere?

1 Mark(s)

Your Answer:

Nitrates and nitrites Nitrates and nitrites
Amino acids Amino acids
Proteins Proteins
None of the above None of the above

What creates black navigation bar?

1 Mark(s)

Your Answer:

.navbar-inverse .navbar-inverse
.navbar-header .navbar-header
.navbar-form .navbar-form
.navbar-link .navbar-link

What are the values of the following Python expressions? 2**(3**2) (2**3)**2 2**3**2

1 Mark(s)

Your Answer:

512, 64, 512 512, 64, 512
512, 512, 512 512, 512, 512
64, 512, 64 64, 512, 64
64, 64, 64 64, 64, 64

In Ruby, which method is used to add a key-value pair to a hash?

1 Mark(s)

Your Answer:

add add
insert insert
push push
store store

What will be the output of the following Python code? i = 1 while True: if i%2 == 0: break print(i) i += 2

1 Mark(s)

Your Answer:

1 1
1 2 1 2
1 2 3 4 5 6 ... 1 2 3 4 5 6 ...
1 3 5 7 9 11 ... 1 3 5 7 9 11 ...

In a parallel circuit the resistance decreases with increase in number of:

1 Mark(s)

Your Answer:

resistors resistors
bulbs bulbs
circuit circuit
battery battery

Blend has blades of different:

1 Mark(s)

Your Answer:

height height
size size
dimensions dimensions
all of above all of above

ASP stands for

1 Mark(s)

Your Answer:

Active Start Pages Active Start Pages
Action Start Pages Action Start Pages
Active Server Pages Active Server Pages
Active Standalone Pages Active Standalone Pages

What is the highest index of an array with 10 elements in Java?

1 Mark(s)

Your Answer:

9 9
10 10
0 0
1 1

Which keyword is used to declare a constant property?

1 Mark(s)

Your Answer:

const const
con con
constant constant
_constant _constant

Settimer() call function in windows operating system is a UNIX's function called for:

1 Mark(s)

Your Answer:

chmod() chmod()
timer() timer()
alarm() alarm()
close() close()

Which of the following escape sequence represents tab?

1 Mark(s)

Your Answer:

\t \t
\t\r \t\r
\b \b
\a \a

The diffraction evidence that the structure is a mixture of order and disorder is supported by values of:

1 Mark(s)

Your Answer:

density density
moisture uptake moisture uptake
analytical techniques analytical techniques
all of above all of above

What is the default port number for HTTP protocol?

1 Mark(s)

Your Answer:

21 21
8080 8080
80 80
443 443

The arrangement of bonds and their strength determines the:

1 Mark(s)

Your Answer:

physical properties physical properties
chemical properties chemical properties
bonding bonding
bond strength bond strength

Which level plotting commands generate figures?

1 Mark(s)

Your Answer:

Low Low
High High
Both high and low Both high and low
No levels No levels

How can you declare a pointer to a pointer?

1 Mark(s)

Your Answer:

int **ptr; int **ptr;
int ptr2; int ptr2;
int &ptr; int &ptr;
int *ptr2; int *ptr2;

Buffer of the system from where the data will be read is called:

1 Mark(s)

Your Answer:

LPVOID buffer LPVOID buffer
LVOID buffer LVOID buffer
PVOID buffer PVOID buffer
VOID buffer VOID buffer

Which of the following framework activities are carried out in Adaptive Software Development (ASD)?

1 Mark(s)

Your Answer:

Assumption, Association, Learning Assumption, Association, Learning
The investigation, Strategy, Coding The investigation, Strategy, Coding
Requirements gathering, Adaptive cycle planning, Iterative development
All of the above All of the above

Which of the key is not on the Number Keypad?

1 Mark(s)

Your Answer:

Ctrl Ctrl
Plus (+) Plus (+)
Minus (-) Minus (-)
Del Answer Del Answer

Which of these methods are used to read in from file?

1 Mark(s)

Your Answer:

get() get()
read() read()
scan() scan()
readFileInput() readFileInput()

Direction of angular velocity can be find out by:

1 Mark(s)

Your Answer:

right hand rule right hand rule
left hand rule left hand rule
thumb rule thumb rule
linear velocity vector direction linear velocity vector direction

Memory leak occurs when:

1 Mark(s)

Your Answer:

Memory not freed Memory not freed
Memory is full Memory is full
Stack overflow Stack overflow
Pointer is null Pointer is null

Light, temperature, air, water and land are part of:

1 Mark(s)

Your Answer:

life life
habitat habitat
physical environment physical environment
style style

As herbivores eat plants, carnivores eat meat, the detritivores eat:

1 Mark(s)

Your Answer:

detritus detritus
carne carne
food food
plant plant

Which of the following component is important for semantic analysis?

1 Mark(s)

Your Answer:

Yacc Yacc
Lex Lex
Symbol Table Symbol Table
Type Checking Type Checking

Using which of the following, multiple inheritance in Java can be implemented?

1 Mark(s)

Your Answer:

Interfaces Interfaces
Multithreading Multithreading
Protected methods Protected methods
Private methods Private methods

In any database, the input and output operations takes place through:

1 Mark(s)

Your Answer:

Sector units Sector units
Track units Track units
Block units Block units
Log units Log units

What DFD notation is represented by the Rectangle ?

1 Mark(s)

Your Answer:

Transform Transform
Data Store Data Store
Function Function
None of the mentioned None of the mentioned

Which function returns true only for the characters defined as lowercase letters?

1 Mark(s)

Your Answer:

islow() islow()
islower() islower()
isalpa() isalpa()
isalnum() isalnum()

Which of these is correct way of calling a constructor having no parameters, of superclass A by subclass B?

1 Mark(s)

Your Answer:

super(void); super(void);
superclass.(); superclass.();
super.A(); super.A();
super(); super();

Which number key is used with shift to type %?

1 Mark(s)

Your Answer:

5 5
4 4
6 6
7 7

What is the result of the expression 10 % 2 == 0 ? "Even" : "Odd" in C#?

1 Mark(s)

Your Answer:

10 % 2 == 0 ? "Even" : "Odd" 10 % 2 == 0 ? "Even" : "Odd"
10 % 2 == 0 ? Even : Odd 10 % 2 == 0 ? Even : Odd
Even Even
Odd Odd

HBase is a distributed . . . . . . . . database built on top of the Hadoop file system.

1 Mark(s)

Your Answer:

Column-oriented Column-oriented
Row-oriented Row-oriented
Tuple-oriented Tuple-oriented
None of the mentioned None of the mentioned

Evaluating Your Answers

Database Systems Mock Test 16 : Question 1 of 80