Operating Systems Mock Test 16

State the complexity of algorithm given below. int function(vector<int> arr) int len=arr.length(); if(len==0) return; temp=arr[len-1]; arr.pop_back(); return temp;

1 Mark(s)

Your Answer:

o(n) o(n)
O(logn) O(logn)
O(1) O(1)
O(n logn) O(n logn)

Which exception is thrown by read() method?

1 Mark(s)

Your Answer:

IOException IOException
InterruptedException InterruptedException
SystemException SystemException
SystemInputException SystemInputException

. . . . . . . . is used to decommission more than one RegionServer at a time by creating sub-znodes.

1 Mark(s)

Your Answer:

/hbase/master /hbase/master
/hbase/draining /hbase/draining
/hbase/passive /hbase/passive
None of the mentioned None of the mentioned

What will be the output of the following PHP code ? <?php $x = 5; $y = 10; $z = "$x + $y"; echo "$z"; ?>

1 Mark(s)

Your Answer:

15 15
10 + 5 10 + 5
$z $z
$x + $y $x + $y

The delegate declaration consists of:

1 Mark(s)

Your Answer:

return type return type
parameter list parameter list
delegate keyword delegate keyword
All of the above All of the above

Which of the following protocols uses both TCP and UDP?

1 Mark(s)

Your Answer:

FTP FTP
SMTP SMTP
Telnet Telnet
DNS DNS

What is the role of Hadoop's HDFS snapshot feature in terms of security?

1 Mark(s)

Your Answer:

Enhancing data replication in HDFS Enhancing data replication in HDFS
Improving the performance of MapReduce jobs
Implementing role-based access control Implementing role-based access control
Creating point-in-time copies of HDFS directories

Electric motor speed will be increase with the increase in:

1 Mark(s)

Your Answer:

heat heat
energy energy
potential potential
electric current electric current

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

1 Mark(s)

Your Answer:

5 5
Address of pointer a Address of pointer a
Address of pointer p Address of pointer p
Error Error

___ reads characters printed in a special magnetic ink into the computer?

1 Mark(s)

Your Answer:

MICR System MICR System
Magnetic Stripe Card Magnetic Stripe Card
Smart Card Smart Card
None of these Answer None of these Answer

In the functions re.search.start(group) and re.search.end(group), if the argument groups not specified, it defaults to . . . . . . . .

1 Mark(s)

Your Answer:

Zero Zero
None None
One One
Error Error

Which of the following functions will return the symmetric difference between two sets, x and y?

1 Mark(s)

Your Answer:

x | y x | y
x ^ y x ^ y
x & y x & y
x - y x - y

Which of the following is not compulsory to create while entry in Accounts with Inventory

1 Mark(s)

Your Answer:

Stock Groups Stock Groups
Stock Items Stock Items
Stock Categories Stock Categories
Units of Measure Units of Measure

How can you add a comment in JavaScript?

1 Mark(s)

Your Answer:

// Comment // Comment
' Comment ' Comment
# Comment # Comment

What is the attribute of java bean to specify scope of bean to have single instance per Spring IOC?

1 Mark(s)

Your Answer:

prototype prototype
singleton singleton
request request
session session

Which of the following is also known as the developer of the world's first cellular system?

1 Mark(s)

Your Answer:

Bellcore and Motorola Bellcore and Motorola
Nippon Telephone and Telegraph (NTT) Nippon Telephone and Telegraph (NTT)
Qualcomm Qualcomm
None of the above None of the above

Great benefits have brought to mankind by:

1 Mark(s)

Your Answer:

science science
technology technology
both a and b both a and b
astronomy astronomy

What will be the output of the following Java program? class area { int width; int length; int height; area() { width = 5; length = 6; height = 1; } void volume() { volume = width * height * length; } } class cons_method { public static void main(String args[]) { area obj = new area(); obj.volume(); System.out.println(obj.volume); } }

1 Mark(s)

Your Answer:

0 0
1 1
25 25
30 30

What will be the output of the following C# code? static void Main(string[] args) { { var dayCode = "MTWFS"; var daysArray = new List<string>(); var list = new Dictionary<string, string> { {"M", "Monday"}, {"T", "Tuesday"}, {"W", "Wednesday"}, {"R", "Thursday"}, {"F", "Friday"}, {"S", "Saturday"}, {"U", "Sunday"} }; for (int i = 0,max = dayCode.Length; i < max; i++) { var tmp = dayCode[i].ToString(); if (list.ContainsKey(tmp)) { daysArray.Add(list[tmp]); } } Console.WriteLine(string.Join("\n ", daysArray)); }

1 Mark(s)

Your Answer:

Monday, Tuesday, Wednesday, Friday, Saturday, Sunday
Monday Tuesday Wednesday Friday Sunday Monday Tuesday Wednesday Friday Sunday
Monday Tuesday Wednesday Friday Saturday
Monday, Tuesday, Wednesday, Friday, Saturday

In a computer, RAM stands for:

1 Mark(s)

Your Answer:

readily available memory readily available memory
read and more memory read and more memory
random access memory random access memory
remember all memory remember all memory

What does the "params" keyword allow in C#?

1 Mark(s)

Your Answer:

Variable number of method arguments Variable number of method arguments
Passing multiple arguments Passing multiple arguments
Passing array of arguments Passing array of arguments
Passing reference to arguments Passing reference to arguments

Any recursive view must be defined as the union of subqueries of number:

1 Mark(s)

Your Answer:

Two Two
Three Three
Four Four
Five Five

Question: Which of the following is not a very typical scenario for Divide and Conquer?

1 Mark(s)

Your Answer:

The shortest path in a given graph The shortest path in a given graph
Matrix multiplication Matrix multiplication
Calculating Fibonacci numbers Calculating Fibonacci numbers
Solving the traveling salesman problem. Solving the traveling salesman problem.

What is the purpose of the 'static' keyword in a C++ function?

1 Mark(s)

Your Answer:

Declares the function as a member of a class
Prevents the function from being called recursively
Defines the function to be inline Defines the function to be inline
Retains the variable's value between function calls

Spark architecture is . . . . . . . . times as fast as Hadoop disk-based Apache Mahout and even scales better than Vowpal Wabbit.

1 Mark(s)

Your Answer:

10 10
20 20
50 50
100 100

In voice over IP, Term SIP stands for:

1 Mark(s)

Your Answer:

Session Initiation protocol Session Initiation protocol
Session Initiation Port Session Initiation Port
Session Initiation Path Session Initiation Path
Session Initiation Packet Session Initiation Packet

How do you convert a string containing an integer to an integer data type?

1 Mark(s)

Your Answer:

int("5") int("5")
integer("5") integer("5")
to_int("5") to_int("5")
convert("5", int) convert("5", int)

What is a "predicate method" in Ruby?

1 Mark(s)

Your Answer:

A method that returns the result of a comparison between two objects
A method that takes a block as an argument
A method that raises an exception when called with invalid arguments
A method that returns a boolean value indicating a condition

Which of the following is not another name of white box testing?

1 Mark(s)

Your Answer:

Structural testing Structural testing
Behavioral testing Behavioral testing
Glass box testing Glass box testing
None of the mentioned None of the mentioned

What will be the output of the following C code? #include <stdio.h> printf("%d", sizeof(strlen("HELLOWORLD")));

1 Mark(s)

Your Answer:

Output, 4 Output, 4
Output, 10 Output, 10
Output, 16 Output, 16
Error, sizeof cannot evaluate size of a function

What is the purpose of the place() method in Tkinter?

1 Mark(s)

Your Answer:

To set the position of a widget using absolute coordinates
To arrange widgets horizontally To arrange widgets horizontally
To handle user input To handle user input
To create message boxes To create message boxes

Ada Lovelace was the first programmer woman in computer history, she also known as ________.

1 Mark(s)

Your Answer:

Mother of Calculation Mother of Calculation
Mother of Monitor Mother of Monitor
Mother of Computer Mother of Computer
None None

What is a keyboard used for ?

1 Mark(s)

Your Answer:

Input text and numbers and send commands to the computer
To create new keys to use with your computer
To open the computer up To open the computer up
To create pictures and images and send them to your computer

Which of the following Cleanroom process teams develops set of statistical test to exercise software after development ?

1 Mark(s)

Your Answer:

Specification team Specification team
Development team Development team
Certification team Certification team
All of the mentioned All of the mentioned

Which protocol assigns IP address to the client connected in the internet?

1 Mark(s)

Your Answer:

DHPP DHPP
DHHP DHHP
DHCP DHCP
None of these None of these

What is the core component of Hadoop responsible for distributed storage?

1 Mark(s)

Your Answer:

YARN YARN
HDFS HDFS
MapReduce MapReduce
Hive Hive

The conversion of variables from Type A to Type B in only certain circumstances with complicated rules and additional processing is known as:

1 Mark(s)

Your Answer:

Implicit conversion Implicit conversion
Explicit conversion Explicit conversion
Type conversion Type conversion
both b and c both b and c

Ruby can be embedded into Hypertext Markup Language(HTML).

1 Mark(s)

Your Answer:

True True
False False

'Fern' is related to which species?

1 Mark(s)

Your Answer:

Monera Monera
Cila Cila
Pteridophyta Pteridophyta
Bacteria Bacteria

Short cut Ctrl + R is used to

1 Mark(s)

Your Answer:

Re-Open the last closed document Re-Open the last closed document
Re-Print the last printed page Re-Print the last printed page
Re-Apply the last paragraph formatting Re-Apply the last paragraph formatting
Right align the selected Paragraph Right align the selected Paragraph

Choose the correct XHTML for width attribute and its value.

1 Mark(s)

Your Answer:

width=80 width=80
width=”80″ width=”80″
WIDTH=”80″ WIDTH=”80″
WIDTH=80 WIDTH=80

Which of the following is an ordered collection of elements of the same type?

1 Mark(s)

Your Answer:

Set Set
Bag Bag
List List
Dictionary Dictionary

. . . . . . . . function takes various parameters like formula, data, subset, labels, etc.

1 Mark(s)

Your Answer:

Pears Pears
Pairs Pairs
Tears Tears
Cars Cars

What is the recommended line length limit for Ruby code according to most style guides?

1 Mark(s)

Your Answer:

No fixed limit No fixed limit
120 characters 120 characters
80 characters 80 characters
100 characters 100 characters

Best case of the exponential search will have time complexity of?

1 Mark(s)

Your Answer:

O(1) O(1)
O(n) O(n)
O(log n) O(log n)
O(n log n) O(n log n)

The major part of the extinction of species occurs in which of the following bio-rich areas?

1 Mark(s)

Your Answer:

Tropical forests Tropical forests
Wetlands Wetlands
Coral reefs Coral reefs
All of the above All of the above

SolrJ now has first class support for . . . . . . . . API.

1 Mark(s)

Your Answer:

Compactions Compactions
Collections Collections
Distribution Distribution
All of the mentioned All of the mentioned

In R, which package is specifically designed for working with time series data?

1 Mark(s)

Your Answer:

forecast forecast
timeSeries timeSeries
tsdata tsdata
chron chron

Evaluating Your Answers

Operating Systems Mock Test 16 : Question 1 of 48