Java Programming Mock Test 9

Which method of the character stream class returns the numbers of characters successfully read starting at index?

1 Mark(s)

Your Answer:

int Read() int Read()
int Read(char[] buffer, int index, int count)
int ReadBlock(char[ ] buffer, int index, int count)
none of the mentioned none of the mentioned

Which of the following statements about C++ arrays is true?

1 Mark(s)

Your Answer:

The size of an array can be changed at runtime.
Arrays automatically check for out-of-bounds access.
Arrays are stored in contiguous memory locations.
Arrays can store elements of different data types.

A sales clerk at a checkout counter scanning a tag on an item rather than keying it into the system, is using __________________?

1 Mark(s)

Your Answer:

input automation input automation
item data automation item data automation
scanning automation scanning automation
source data automation source data automation

Bubble sort is an adaptive sorting algorithm.

1 Mark(s)

Your Answer:

true true
false false

Which of the following is a base package for R language?

1 Mark(s)

Your Answer:

util util
lang lang
tools tools
spatial spatial

What will be the output of the following C++ code? #include <iostream> #include <string> #include <cstdlib> using namespace std; void func(const int &a) { int temp = 10; a = temp; cout<<a; } int main(int argc, char const *argv[]) { int a = 5; func(a); return 0; }

1 Mark(s)

Your Answer:

5 5
10 10
Error Error
Segmentation fault Segmentation fault

The current date is returned by the method:

1 Mark(s)

Your Answer:

system.date system.date
current.date current.date
machine.date machine.date
today.date today.date

Which of this method of class String is used to obtain a length of String object?

1 Mark(s)

Your Answer:

get() get()
Sizeof() Sizeof()
lengthof() lengthof()
length() length()

Software used to drive microprocessor -based systems is called:

1 Mark(s)

Your Answer:

assembly language programs assembly language programs
firmware firmware
flowchart instructions flowchart instructions
BASIC interpreter instructions BASIC interpreter instructions

Which of the following provide inter-switch VLAN communication? 1. ISL 2. VTP 3. 802.1Q 4. 802.3Z

1 Mark(s)

Your Answer:

2 only 2 only
1 and 3 1 and 3
2 and 4 2 and 4
2, 3 and 4 2, 3 and 4

Which of the following framework was used by Google for Gmail?

1 Mark(s)

Your Answer:

Dojo Dojo
GWT GWT
Closure Closure
YUI YUI

Hungarian notation is:

1 Mark(s)

Your Answer:

A rule for naming variables A rule for naming variables
A notation for namespace declaration A notation for namespace declaration
For conversion of variables For conversion of variables
a and b a and b

How are required arguments specified in the function heading?

1 Mark(s)

Your Answer:

identifier followed by an equal to sign and the default value
identifier followed by the default value within backticks (")
identifier followed by the default value within square brackets ([])
identifier identifier

If a noiseless channel with a bandwidth of 3000 Hz transmitting a signal with two signal levels the maximum Bit rate would be:

1 Mark(s)

Your Answer:

12000 bps 12000 bps
6000 bps 6000 bps
1800 bps 1800 bps
zero zero

If photosynthesis stops on Earth, which will be the first major consequence?

1 Mark(s)

Your Answer:

A) Increase in oxygen A) Increase in oxygen
B) Decrease in carbon dioxide B) Decrease in carbon dioxide
C) Decrease in oxygen and food supply C) Decrease in oxygen and food supply
D) Increase in nitrogen D) Increase in nitrogen

Abstract class cannot have a constructor.

1 Mark(s)

Your Answer:

True True
False False

What is the purpose of an event in GUI programming?

1 Mark(s)

Your Answer:

Creating graphical elements Creating graphical elements
Handling user interactions Handling user interactions
Designing user interfaces Designing user interfaces
Displaying images Displaying images

What is the role of the facet_wrap() function in ggplot2?

1 Mark(s)

Your Answer:

Creates a scatter plot with wrapped facets
Divides the plot into multiple facets Divides the plot into multiple facets
Adds a wrap-around border to the plot Adds a wrap-around border to the plot
Creates a ribbon-like effect in the plot

What does the slice_before method do in Ruby enumerators?

1 Mark(s)

Your Answer:

Slices a collection based on a given condition
Removes elements from a collection before a given condition
Removes elements from a collection after a given condition
Splits a collection into slices before elements that satisfy a given condition

What will be the output of the following Python code? def to_upper(k): return k.upper() x = ['ab', 'cd'] print(list(map(upper, x)))

1 Mark(s)

Your Answer:

['AB', 'CD'] ['AB', 'CD']
['ab', 'cd'] ['ab', 'cd']
none of the mentioned none of the mentioned
error error

Which option is used to copy company's data into pendrive or CD

1 Mark(s)

Your Answer:

Backup Backup
Restore Restore
Split Company Data Split Company Data
Copy Data Copy Data

Example of non-numeric data is_________?

1 Mark(s)

Your Answer:

Employee address Employee address
Examination score Examination score
Bank balance Bank balance
All of these All of these

Tears are produced by:

1 Mark(s)

Your Answer:

tear glands tear glands
endocrine glands endocrine glands
sensory cell sensory cell
receptors receptors

Which keyword is used to access methods and variables within the same class in Ruby?

1 Mark(s)

Your Answer:

this this
self self
object object
instance instance

All classes in Java are inherited from which class?

1 Mark(s)

Your Answer:

java.lang.class java.lang.class
java.class.inherited java.class.inherited
java.class.object java.class.object
java.lang.Object java.lang.Object

Which operator is overloaded by the __or__() function?

1 Mark(s)

Your Answer:

|| ||
| |
// //
/ /

What will be the output of the following C++ code? #include <iostream> #include <vector> using namespace std; int main () { vector<int> first; first.assign (7,100); vector<int>::iterator it; it=first.begin()+1; int myints[] = {1776,7,4}; cout << int (first.size()) << '\n'; return 0; }

1 Mark(s)

Your Answer:

10 10
9 9
8 8
7 7

Who are the people that actually use the system to perform or support the work to be completed ?

1 Mark(s)

Your Answer:

system analysts system analysts
system designers system designers
system owners system owners
none of the above none of the above

Internet Protocol Version (IPv6) has the address space of:

1 Mark(s)

Your Answer:

232 232
248 248
2128 2128
2256 2256

If two substances are mixed together physically, they form a:

1 Mark(s)

Your Answer:

solution solution
compound compound
mixture mixture
molecules molecules

What is a topological sort in a directed graph?

1 Mark(s)

Your Answer:

A minimum spanning tree of the graph. A minimum spanning tree of the graph.
A breadth-first search traversal of the graph.
A depth-first search traversal of the graph.
A linear ordering of vertices such that for every directed edge u -> v, vertex u comes before v.

The real numbers include all the:

1 Mark(s)

Your Answer:

irrational numbers irrational numbers
rational numbers rational numbers
positive numbers positive numbers
negative numbers negative numbers

Identify the incorrect option.

1 Mark(s)

Your Answer:

1 <= sizeof(bool) <= sizeof(long) 1 <= sizeof(bool) <= sizeof(long)
sizeof(float) <= sizeof(double) <= sizeof(long double)
sizeof(char) <= sizeof(long) <=sizeof(wchar_t)
sizeof(N) = sizeof(signed N) = sizeof(unsigned N)

What is the main advantage of IPv6 over IPv4?

1 Mark(s)

Your Answer:

More addresses More addresses
Faster Faster
Simpler Simpler
Cheaper Cheaper

To process the file, you need to break the array from $_FILES into individual values. You can do this using the ________ function.

1 Mark(s)

Your Answer:

divide() divide()
list() list()
break() break()
indi() indi()

What will be the output of the following C# code? static void Main(string[] args) { int i= 0,k; label: Console.WriteLine(i); if (i == 0) goto label; Console.ReadLine(); }

1 Mark(s)

Your Answer:

0 0 0 0 0 0 0 0
0 0 0 0 0 0
0 infinite times 0 infinite times
0 0

. . . . . . . . is an indication that a fatal problem has occurred and execution of the function stops.

1 Mark(s)

Your Answer:

message message
error error
warning warning
message & warning message & warning

Impala on Amazon EMR requires . . . . . . . . running Hadoop 2.x or greater.

1 Mark(s)

Your Answer:

AMS AMS
AMI AMI
AWR AWR
All of the mentioned All of the mentioned

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Java Programming Mock Test 9 : Question 1 of 38