Exam Duration: 01:10:00

Operating Systems Mock Test 18 : Question 1 of 78

Dump of memory of the computer system is examined by the:

1 Mark(s)

Your Answer:

programmer programmer
designer designer
debugger debugger
engineer engineer

If you are working on real-time process control applications or systems that involve concurrent processing, you would use a___________________?

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Your Answer:

Activity diagram Activity diagram
Sequence diagram Sequence diagram
Statechart diagram Statechart diagram
Object diagram Object diagram

which of the following is the correct format of email adress?

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Your Answer:

name@website.info name@website.info
www.nameofwebsite.com www.nameofwebsite.com
name@website.com. name@website.com.
name.website.com name.website.com

A set of processors simultaneously execute different instructions on different:

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Your Answer:

Buffers Buffers
Data Set Data Set
Buses Buses
Registers Registers

What is the difference between a CD-ROM and a CD-RW ?

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Your Answer:

A CD-RW can be written to, but a CD-ROM can only be read from.
They are the same — just two different terms used by different manufacturers.
A CD-ROM holds more information than a CD-RW.
A CD-ROM can be written to and a CD-RW cannot.

Number of constructors a class can define is?

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Your Answer:

1 1
2 2
Any number Any number
None of the mentioned None of the mentioned

How do you declare an array of structures in C?

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Your Answer:

struct myStruct arr[]; struct myStruct arr[];
myStruct array[]; myStruct array[];
struct array myStruct[]; struct array myStruct[];
myStruct[] arr; myStruct[] arr;

How many stages are there in Iterative-enhancement model used during software maintenance ?

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Your Answer:

two two
three three
four four
five five

In advanced MapReduce, what is the significance of the Hadoop MapReduce "MapReduce speculative execution"?

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Your Answer:

Execute multiple Map tasks in parallel Execute multiple Map tasks in parallel
Execute a backup task if the original task is slow
Execute Map and Reduce tasks simultaneously
Execute tasks in a distributed environment

. . . . . . . . display contours of a 3d surface in 2d.

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Your Answer:

aes_contour aes_contour
geom_contour geom_contour
aes_gem aes_gem
aes_auto aes_auto

What data structure is used to implement a system where operations must be performed on the middle element frequently?

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Your Answer:

Stack Stack
Linked List Linked List
Queue Queue
Deque Deque

Which Apache directive outputs Apache’s server version, server name, port and compile-in modules?

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Your Answer:

ServerSignature ServerSignature
ServerName ServerName
ServerDetails ServerDetails
ServerInfo ServerInfo

What will be the output of the following C++ code? #include <iostream> using namespace std; class Integer { int i; public: Integer(int ii) : i(ii) {} const Integer operator+(const Integer& rv) const { cout << "operator+" << endl; return Integer(i + rv.i); } Integer& operator+=(const Integer& rv) { cout << "operator+=" << endl; i += rv.i; return *this; } }; int main() { int i = 1, j = 2, k = 3; k += i + j; Integer ii(1), jj(2), kk(3); kk += ii + jj; }

1 Mark(s)

Your Answer:

operator+ operator+= operator+ operator+=
operator+= operator+ operator+= operator+
operator+ operator+ operator+ operator+
operator+ operator= operator+ operator=

Which of the following is a Change Case in MS-Word ?

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Your Answer:

Sentence Case Sentence Case
Lowercase Lowercase
Toggle Case Toggle Case
All of these All of these

Automatic variables are initialized to . . . . . . . .

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Your Answer:

Zero Zero
Junk value Junk value
Nothing Nothing
Both Zero & Junk value Both Zero & Junk value

In a closed isolated system, net external force is equals to:

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Your Answer:

0N 0N
1N 1N
12N 12N
9.8n 9.8n

Which of these exception is thrown in cases when the file specified for writing is not found?

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Your Answer:

IOException IOException
FileException FileException
FileNotFoundException FileNotFoundException
FileInputException FileInputException

What is the purpose of the JDBC `PreparedStatement` interface?

1 Mark(s)

Your Answer:

To create a JavaBean To create a JavaBean
To manage JDBC drivers To manage JDBC drivers
To execute parameterized SQL queries To execute parameterized SQL queries
To establish a connection to a database To establish a connection to a database

Which of the following is the Color Format that is a defined using the keyword rgb, followed by three numbers between 0 and 255, contained in parentheses and separated by commas, with no spaces between them.

1 Mark(s)

Your Answer:

HSLa Color HSLa Color
HSL Color HSL Color
RGBa Color RGBa Color
RGB Color RGB Color

Which data structure is used for implementing an efficient dynamic array with automatic resizing?

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Your Answer:

Array Array
Linked List Linked List
Vector Vector
Deque Deque

A small program that can be embedded within the web pages to perform a specific functionality is called as:

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Your Answer:

Class Class
Applet Applet
Sheet Sheet
All of above All of above

What keystroke will terminate setup mode?

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Your Answer:

Ctrl+Z Ctrl+Z
Ctrl+^ Ctrl+^
Ctrl+C Ctrl+C
Ctrl+Shift+^ Ctrl+Shift+^

Vapors 'H2O' has molar mass of:

1 Mark(s)

Your Answer:

2.02x10-3 kg/mol 2.02x10-3 kg/mol
28.0x10-3 kg/mol 28.0x10-3 kg/mol
18.0x10-3 kg/mol 18.0x10-3 kg/mol
4.0x10-3 kg/mol 4.0x10-3 kg/mol

Who delivers the technical skills that are necessary to engineer a product or an application ?

1 Mark(s)

Your Answer:

Practitioners Practitioners
Project managers Project managers
Senior managers Senior managers
None of the mentioned None of the mentioned

Which one is the common device used for drawing, painting, or interactively selecting coordinate positions on an object?

1 Mark(s)

Your Answer:

Image scanner Image scanner
Digitizers Digitizers
Data glove Data glove
Touch panels Answer Touch panels Answer

What is the output of the given code? array1 = [[1,2,3,4,5],[0,0,0,0]] array2 = [[1,2,3],[0,0,0]] print array1 || array2

1 Mark(s)

Your Answer:

[[1, 2, 3], [0, 0, 0]]. [[1, 2, 3], [0, 0, 0]].
[[1, 2, 3, 4, 5], [0, 0, 0, 0]]. [[1, 2, 3, 4, 5], [0, 0, 0, 0]].
[]. [].
Error Error

How can we delete all files in a directory?

1 Mark(s)

Your Answer:

Files.delete(path) Files.delete(path)
Files.deleteDir() Files.deleteDir()
Directory.delete() Directory.delete()
Directory.delete(path) Directory.delete(path)

What is the result of the expression (10 + 2) / 2 in C?

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Your Answer:

12 12
6 6
7 7
11 11

Route determination can be identified by:

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Your Answer:

transport layer transport layer
application layer application layer
network layer network layer
presentation layer presentation layer

In R, which package provides functions for working with large datasets stored in data frames?

1 Mark(s)

Your Answer:

bigframe bigframe
bigdata bigdata
data.table data.table
dframe dframe

Which character is used to indicate an end tag?

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Your Answer:

Which of the following are client-side JavaScript object?

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Your Answer:

Database Database
Cursor Cursor
Client Client
FileUpLoad FileUpLoad

In a computer, symbols B2:E3 are known as:

1 Mark(s)

Your Answer:

range range
mathematical formula mathematical formula
display value of a function display value of a function
cell address cell address

Predict the output: public class Test{ public static void main(String args[]){ try{ String arr[] = new String[10]; arr = null; arr[0] = "one"; System.out.print(arr[0]); }catch(Exception ex){ System.out.print("exception"); }catch(NullPointerException nex){ System.out.print("null pointer exception"); } } }

1 Mark(s)

Your Answer:

"one" is printed. "one" is printed.
"exception" is printed. "exception" is printed.
"null pointer exception" is printed. "null pointer exception" is printed.
Compilation fails saying NullPointerException has already been caught.
None of these None of these

What is the default display value of a

element?

1 Mark(s)

Your Answer:

block block
inline inline
inline-block inline-block
none none

Which of the following provides a printed copy of your presentation?

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Your Answer:

Outline Outline
Speaker notes Speaker notes
Audience handouts Audience handouts
All of the above All of the above

Which is the handler method used to invoke when uncaught JavaScript exceptions occur?

1 Mark(s)

Your Answer:

Onhalt Onhalt
Onerror Onerror
Both onhalt and onerror Both onhalt and onerror
None of the mentioned None of the mentioned

What does tty media type is used for ?

1 Mark(s)

Your Answer:

For use with low-resolution teletypes, terminals, or other devices with limited display capabilities.
For use with Braille printers. For use with Braille printers.
For use with speech synthesizers. For use with speech synthesizers.
For use with projected media (direct computer-to-projector presentations), or printing transparencies for projection.

What is the purpose of the #define directive in C preprocessing?

1 Mark(s)

Your Answer:

To include a header file To include a header file
To define a macro To define a macro
To declare a constant To declare a constant
To declare a variable To declare a variable

Which protocol is used to assign IP addresses automatically?

1 Mark(s)

Your Answer:

DNS DNS
DHCP DHCP
ARP ARP
NAT NAT

Initialization of variable can be done by writing _____ operator in between variable name and operand value.

1 Mark(s)

Your Answer:

EQUALS EQUALS
= =
VALUE VALUE
== ==

Mail Merge is a feature of which software?

1 Mark(s)

Your Answer:

Microsoft Word Microsoft Word
Microsoft Excel Microsoft Excel
Microsoft PowerPoint Microsoft PowerPoint
None of these None of these

___________ is used to close and save documents.

1 Mark(s)

Your Answer:

Crtl + B Crtl + B
Crtl + W Crtl + W
Crtl + O Crtl + O
None None

In Internet Protocol Version (IPv6), real-time audio or video, particularly in digital form, requires resources such as:

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Your Answer:

fixed bandwidth fixed bandwidth
variable bandwidth variable bandwidth
high bandwidth high bandwidth
low bandwidth low bandwidth

What is the return value of strcmp("abc", "abc")?

1 Mark(s)

Your Answer:

0 0
1 1
-1 -1
1 1

The cells that detect the change are known as:

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Your Answer:

white blood cell white blood cell
sensory cells sensory cells
eukaryotic cells eukaryotic cells
stem cells stem cells

: What is the time complexity of accessing an element in a multi-dimensional array?

1 Mark(s)

Your Answer:

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

A signal completes a pattern within a measurable time frame is called:

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Your Answer:

analog analog
digital digital
non periodic non periodic
periodic periodic

False drafts occur due to:

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Your Answer:

excessive friction excessive friction
tension tension
lengthing lengthing
all of above all of above

Reciprocal of resistivity is:

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Your Answer:

current density current density
inductivity inductivity
conductivity conductivity
electric field strength electric field strength

Syntax Analysis is also called:

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Your Answer:

Parsing Parsing
Scanning Scanning
Coding Coding
Linking Linking

Phasor is a:

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Your Answer:

vector quantity vector quantity
scalar quantity scalar quantity
bit vector bit vector
none of above none of above

Masses are usually measured in:

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Your Answer:

SI units SI units
atomic mass units atomic mass units
light units light units
AI units AI units

Which of the following package combine multi-dimensional arrays?

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Your Answer:

stringr stringr
comb comb
abind abind
anlyz anlyz

In multicast routing, when a router receives a packet to forward, it needs to find the shortest path to the:

1 Mark(s)

Your Answer:

sender sender
destination destination
medium medium
first node first node

What is the purpose of using constructors in C++?

1 Mark(s)

Your Answer:

To hide the implementation details of a class
To create multiple instances of a class To create multiple instances of a class
To initialize the object's data members To initialize the object's data members
To destroy the object To destroy the object

Which property in the Window object is used to refer to a Location object?

1 Mark(s)

Your Answer:

position position
area area
window window
location location

Java and C/C++ are so close that there are no incompatibilities between them. Therefore, a driver is not necessary.

1 Mark(s)

Your Answer:

True True
False False

What is the administrative distance of OSPF?

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Your Answer:

90 90
100 100
110 110
120 120

Standing waves are characterized by fixed locations of zero displacement called:

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Your Answer:

node node
antinode antinode
phase phase
wavelength wavelength

Which of the following API can be used to get the timing without affecting the page loading process?

1 Mark(s)

Your Answer:

Navigation API Navigation API
Timing API Timing API
Navigation Timing API Navigation Timing API
None of the mentioned None of the mentioned

If the station has been authorized by other stations then a station can:

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Your Answer:

send data send data
receive data receive data
acknowledge data acknowledge data
wait wait

Determine Output: void main() { int i; char a[]="�"; if(printf("%sn", a)) printf("Ok here n"); else printf("Forget itn"); }

1 Mark(s)

Your Answer:

Ok here Ok here
Forget it Forget it
Error Error
None of These None of These

What is the size of an int data type?

1 Mark(s)

Your Answer:

4 Bytes 4 Bytes
8 Bytes 8 Bytes
Depends on the system/compiler Depends on the system/compiler
Cannot be determined Cannot be determined

Which one of the following methods in the exception class, is used to get a nested exception object?

1 Mark(s)

Your Answer:

getPrevious() getPrevious()
getCode() getCode()
getFile() getFile()
getLine() getLine()

In Quality of Service (QoS), Jitter is the variation in delay for packets belonging to the:

1 Mark(s)

Your Answer:

same flow same flow
parallel flow parallel flow
protocol flow protocol flow
data flow data flow

What is the difference between a class and an object in object-oriented programming?

1 Mark(s)

Your Answer:

A class is a blueprint for creating objects, while an object is an instance of a class
A class is an object A class is an object
They are the same They are the same
An object is a class An object is a class

The theoretical downstream data rate is:

1 Mark(s)

Your Answer:

10 Mbps 10 Mbps
20 Mbps 20 Mbps
30 Mbps 30 Mbps
40 Mbps 40 Mbps

When you need to modify the original argument What is a key advantage of call by reference in function calls?

1 Mark(s)

Your Answer:

It avoids modifying the original variable
It reduces memory usage for large data types
It creates a copy of the variable It creates a copy of the variable
It prevents the function from modifying the argument

What is the correct HTML element for the largest heading?

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Your Answer:

In R, which package is commonly used for Bayesian hierarchical modeling?

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Your Answer:

brms brms
bayesR bayesR
bhm bhm
bayesianstats bayesianstats

Center of earth has pressure of:

1 Mark(s)

Your Answer:

2x1016 Pa 2x1016 Pa
4x1011 Pa 4x1011 Pa
1.5x1010 Pa 1.5x1010 Pa
1.1x108 Pa 1.1x108 Pa

Which of these is a type of stream in Java?

1 Mark(s)

Your Answer:

Integer stream Integer stream
Short stream Short stream
Byte stream Byte stream
Long stream Long stream

What will be the output of the following Python code? a = [5,5,6,7,7,7] b = set(a) def test(lst): if lst in b: return 1 else: return 0 for i in filter(test, a): print(i,end=" ")

1 Mark(s)

Your Answer:

5 5 6 5 5 6
5 6 7 5 6 7
5 5 6 7 7 7 5 5 6 7 7 7
5 6 7 7 7 5 6 7 7 7

A packet filter firewall filters at the:

1 Mark(s)

Your Answer:

application or transport application or transport
data link layer data link layer
physical layer physical layer
network or transport layer network or transport layer

The speed of sound in the medium depends on:

1 Mark(s)

Your Answer:

Wavelength Wavelength
Nature Nature
Direction of propagation Direction of propagation
intensity intensity

The allocation of input and output devices are provided by:

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Your Answer:

Mediators Mediators
Moderators Moderators
operating system operating system
Processors Processors

What does the gem cleanup --dryrun command do in Ruby?

1 Mark(s)

Your Answer:

Simulates the cleanup process without removing any gems
Removes all gems installed on the system
Lists gems installed locally Lists gems installed locally
Updates all installed gems to their latest versions

Evaluating Your Answers

Operating Systems Mock Test 18 : Question 1 of 78