Data Structures Mock Test 1

Dirac's delta function is also known as:

1 Mark(s)

Your Answer:

unit step function unit step function
unit impulse function unit impulse function
dual step function dual step function
Heaviside step function Heaviside step function

In HTML Geolocation the getCurrentPosition() method is used to:

1 Mark(s)

Your Answer:

Return the user's position Return the user's position
Get the map of world Get the map of world
Return the only latitude Return the only latitude
Return the only longitude Return the only longitude

Which port number is used by default for secure HTTPS communication?

1 Mark(s)

Your Answer:

80 80
21 21
443 443
22 22

Which algorithm is used in the Game tree to make decisions of Win/Lose?

1 Mark(s)

Your Answer:

Heuristic Search Algorithm Heuristic Search Algorithm
DFS/BFS algorithm DFS/BFS algorithm
Greedy Search Algorithm Greedy Search Algorithm
Min/Max algorithm Min/Max algorithm

The right shift operator is represented as:?

1 Mark(s)

Your Answer:

> >
>> >>
-> ->
< Answer < Answer

Which of the following is not true about the 2-3 tree?

1 Mark(s)

Your Answer:

all leaves are at the same level all leaves are at the same level
it is perfectly balanced it is perfectly balanced
postorder traversal yields elements in sorted order
it is B-tree of order 3 it is B-tree of order 3

Botnet is a network of:

1 Mark(s)

Your Answer:

Infected computers Infected computers
Supercomputers Supercomputers
Robots Robots
Servers Servers

Which operator in Kotlin is known as the Elvis operator for handling null fallbacks?

1 Mark(s)

Your Answer:

?: ?:
?. ?.
!! !!
?:= ?:=

Which of the following is not a valid way to declare an integer variable in Java?

1 Mark(s)

Your Answer:

int x = 42 int x = 42
int y = 3.14 int y = 3.14
int z = -10 int z = -10
int w = 0x1A int w = 0x1A

Mass is always a:

1 Mark(s)

Your Answer:

positive vector quantity positive vector quantity
negative vector quantity negative vector quantity
positive scalar quantity positive scalar quantity
negative scalar quantity negative scalar quantity

What will be the output of the following C# code? static void Main(string[] args) { int a = -1; int b = -1; if (Convert.ToBoolean (++a = ++b)) Console.WriteLine("a"); else Console.WriteLine("b"); Console.ReadLine(); }

1 Mark(s)

Your Answer:

a a
b b
Compile time error Compile time error
Code execute successfully with no output

The value returned when we use the function isoweekday() is . . . . . . . . and that for the function weekday() is . . . . . . . . if the system date is 19th June, 2017 (Monday).

1 Mark(s)

Your Answer:

0,0 0,0
0,1 0,1
1,0 1,0
1,1 1,1

Which of the following is/are main parameters that you should use when computing the costs of a software development project ?

1 Mark(s)

Your Answer:

travel and training costs travel and training costs
hardware and software costs hardware and software costs
effort costs (the costs of paying software engineers and managers)
all of the mentioned all of the mentioned

Mean radius of Sun is:

1 Mark(s)

Your Answer:

6.96x108 m 6.96x108 m
6.37x106 m 6.37x106 m
1.74x106 m 1.74x106 m
6.96x1018 m 6.96x1018 m

Type of software which is designed for users to customize the programs is:

1 Mark(s)

Your Answer:

freeware freeware
open-source software open-source software
shareware shareware
macros macros

ANSI published an extended standard for SQL, named as:

1 Mark(s)

Your Answer:

SQL-87 SQL-87
SQL-88 SQL-88
SQL-89 SQL-89
SQL-90 SQL-90

When the source and destination of the packet are located on the same physical network, then:

1 Mark(s)

Your Answer:

direct delivery fails direct delivery fails
direct delivery delay direct delivery delay
direct delivery occurs direct delivery occurs
direct delivery stops direct delivery stops

In C++, what is the purpose of the 'endl' manipulator?

1 Mark(s)

Your Answer:

Inserts a new line Inserts a new line
Clears the screen Clears the screen
Moves the cursor to the start Moves the cursor to the start
Ends the program Ends the program

Which of the following refers collection of the information stored in a database at a specific time?

1 Mark(s)

Your Answer:

Independence Independence
Instance of the database Instance of the database
Schema Schema
Data domain Data domain

Which of the following methods can be considered the correct and efficient way of handling arguments with spaces?

1 Mark(s)

Your Answer:

Use single quotes Use single quotes
Either single or double quotes Either single or double quotes
Use double quotes Use double quotes
There is no way of handling arguments with space

A repeater is a device that operates only in the:

1 Mark(s)

Your Answer:

connector connector
LAN LAN
WAN WAN
MAN MAN

Which one of the following is the correct abstract method?

1 Mark(s)

Your Answer:

public function write() public function write()
abstract function write() abstract function write()
abstract public write(); abstract public write();
abstract public function write(); abstract public function write();

What will be the output of the following C code? #include <stdio.h> #define foo(x, y) #x #y int main() { printf("%s\n", foo(k, l)); return 0; }

1 Mark(s)

Your Answer:

kl kl
k l k l
xy xy
Compile time error Compile time error

In 8B6T, the minimum bandwidth is very close to:

1 Mark(s)

Your Answer:

2BIQ 2BIQ
8B4Q. 8B4Q.
6N18 6N18
MLT-3 MLT-3

The parameter that is normally achieved through a trailer added to the end of the frame is:

1 Mark(s)

Your Answer:

access control access control
flow control flow control
error control error control
physical addressing. physical addressing.

Can arrays in C++ have variable size?

1 Mark(s)

Your Answer:

Yes, always Yes, always
No, size must be constant for static arrays
Only global arrays Only global arrays
Only inside functions Only inside functions

What is the default return type of main() in standard C++?

1 Mark(s)

Your Answer:

void void
int int
float float
bool bool

Converting Plain text into Ciphertext is called?

1 Mark(s)

Your Answer:

Cryptanalysis Cryptanalysis
Firewall Firewall
Encryption Encryption
Ethernet Answer Ethernet Answer

The line encoding scheme that is used in 1000BaseCX is:

1 Mark(s)

Your Answer:

Manchester Manchester
NRZ NRZ
4D-PAMS 4D-PAMS
MLT-3 MLT-3

Which of these packages contains all the event handling interfaces?

1 Mark(s)

Your Answer:

java.lang java.lang
java.awt java.awt
java.awt.event java.awt.event
java.event java.event

Specific heat of Calcium is:

1 Mark(s)

Your Answer:

0.893 J/g°C 0.893 J/g°C
0.624 J/g°C 0.624 J/g°C
0.155 J/g°C 0.155 J/g°C
0.297 J/g°C 0.297 J/g°C

The .NET assemblies include:

1 Mark(s)

Your Answer:

CIL(Common Intermediate Language) CIL(Common Intermediate Language)
Meta information Meta information
Optional resources Optional resources
a and c a and c

In Python, how can you check if a string starts with a specific substring?

1 Mark(s)

Your Answer:

startswith() startswith()
start_with() start_with()
start() start()
begin_with() begin_with()

Which parameter determines whether the old session file will also be deleted when the session ID is regenerated?

1 Mark(s)

Your Answer:

delete_old_file delete_old_file
delete_old_session delete_old_session
delete_old_session_file delete_old_session_file
delete_session_file delete_session_file

The number of atoms of each element in a compound is known as:

1 Mark(s)

Your Answer:

form form
chemical formula chemical formula
chemistry chemistry
composition composition

It is not possible for the two's complement value to be equal to the original value in any case.

1 Mark(s)

Your Answer:

True True
False False

In certain cases, it is not clear what kind of pattern need to find, data mining should_________:

1 Mark(s)

Your Answer:

Try to perform all possible tasks Try to perform all possible tasks
Perform both predictive and descriptive task
It may allow interaction with the user so that he can guide the mining process
All of the above All of the above

The tiny opening surrounded by guard cells under the leaf is known as:

1 Mark(s)

Your Answer:

stigma stigma
stomata stomata
leaves leaves
pollen grain pollen grain

Generalization of the group by construct is supported by SQL to perform the:

1 Mark(s)

Your Answer:

all operation all operation
commit operation commit operation
rollup operation rollup operation
null operation null operation

What is the value of the expression false && false in Java?

1 Mark(s)

Your Answer:

TRUE TRUE
FALSE FALSE
1 1
0 0

The value of moisture regain in wood pulp is calculated to be:

1 Mark(s)

Your Answer:

62 62
49 49
42 42
77 77

Select the interfaces implemented by array class.

1 Mark(s)

Your Answer:

ICloneable, ICollection ICloneable, ICollection
IEnumerable, IStructuralComparable, IStructuralEquatable
ICloneable, ICollection, IList ICloneable, ICollection, IList
Only IEnumerable, IStructuralComparable, IStructuralEquatable & ICloneable, ICollection, IList

Readfile() function of the operating system program is for:

1 Mark(s)

Your Answer:

Data Definition Data Definition
Data Declaration Data Declaration
reading reading
writing writing

Which of the following declaration is not supported by C language?

1 Mark(s)

Your Answer:

String str; String str;
char *str; char *str;
float str = 3e2; float str = 3e2;
Both "String str;" and "float str = 3e2;"

What will be the output of the following R code? > y <- data.frame(a = 1, b = "a") > dput(y)

1 Mark(s)

Your Answer:

structure(list(a = 1, b = list(1L, .Label = "a", class = "factor")), .Names\ = c("a", "b"), row.names = c(NA, -1L), class = "data.frame")
list(list(a = 1, b = list(1L, .Label = "a", class = "factor")), .Names\ = c("a", "b"), row.names = c(NA, -1L), class = "data.frame")
structure(list(a = 1, b = structure(1L, .Label = "a", class = "factor")), .Names\ = c("a", "b"), row.names = c(NA, -1L), class = "data.frame")
Error Error

What is the purpose of the clear() method for lists and tuples?

1 Mark(s)

Your Answer:

Removes all elements from the list or tuple
Adds an element to the list or tuple Adds an element to the list or tuple
Removes the last element Removes the last element
Deletes the list or tuple Deletes the list or tuple

Which topology uses a central hub?

1 Mark(s)

Your Answer:

Bus Bus
Star Star
Ring Ring
Mesh Mesh

Which of the following property is a shorthand definition of the number of columns and their widths in a multicolumn text flow?

1 Mark(s)

Your Answer:

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

Which operation is not efficiently performed in a d-heap?

1 Mark(s)

Your Answer:

insert insert
delete delete
find find
merge merge

What does AVL stand for in AVL trees?

1 Mark(s)

Your Answer:

Algorithm Very Long Algorithm Very Long
Abstract Value Logic Abstract Value Logic
Adelson-Velsky and Landis Adelson-Velsky and Landis
Anti-Vertical Logic Anti-Vertical Logic

If the Internet Protocol Version (IPv4) address is not listed in the datagram, a router must not be:

1 Mark(s)

Your Answer:

rechecked rechecked
synchronized synchronized
identified identified
visited visited

What is the real-world application of image subtraction?

1 Mark(s)

Your Answer:

MRI scan MRI scan
CT scan CT scan
Mask mode radiography Mask mode radiography
None of the above None of the above

What is the purpose of Hadoop's Ranger KMS (Key Management Service) in a Hadoop security setup?

1 Mark(s)

Your Answer:

Managing and securing encryption keys Managing and securing encryption keys
Enabling speculative execution in MapReduce
Increasing the replication factor of HDFS blocks
Disabling block-level access control Disabling block-level access control

How do you select a chart in MS PowerPoint?

1 Mark(s)

Your Answer:

Double click Double click
Single click Single click
Right-click Right-click
Ctrl + C Ctrl + C

Evaluating Your Answers

Data Structures Mock Test 1 : Question 1 of 54