Computer Networks Mock Test 7

Which of the following commands should you always use before submitting a document to others?

1 Mark(s)

Your Answer:

Find command Find command
Replace command Replace command
Spelling and Grammar Spelling and Grammar
Thesaurus Thesaurus

What does the `include?` method do when used with strings in Ruby?

1 Mark(s)

Your Answer:

Checks if a substring exists in the string
Checks if a character exists in the string
Checks if the string includes another string
Error Error

Which string matching algorithm uses a heuristic to improve efficiency by skipping sections of the text?

1 Mark(s)

Your Answer:

Rabin-Karp Rabin-Karp
Knuth-Morris-Pratt (KMP) Knuth-Morris-Pratt (KMP)
Boyer-Moore Boyer-Moore
Naive Search Naive Search

Which Java operator is used to perform a logical NOT operation?

1 Mark(s)

Your Answer:

~ ~
&& &&
|| ||
! !

What is the significance of the MapReduce "Map" phase?

1 Mark(s)

Your Answer:

Distribute data to reducers Distribute data to reducers
Process input key-value pairs Process input key-value pairs
Sort and shuffle data Sort and shuffle data
Aggregate values on the reducer side Aggregate values on the reducer side

To create queries in Access

1 Mark(s)

Your Answer:

You can drag and drop fields on query builders
you can type the SQL command in SQL view
You can use query wizard or design view You can use query wizard or design view
All of above All of above

Shortcut key used to compile and run the program in C++ is…

1 Mark(s)

Your Answer:

Alt+F9 Alt+F9
Alt+F5 Alt+F5
Ctrl+F9 Ctrl+F9
F9 F9

How is a while loop different from a for loop in R?

1 Mark(s)

Your Answer:

while loop is used for fixed iterations, for loop for variable iterations
for loop is used for fixed iterations, while loop for variable iterations
Both while and for loops are used for fixed iterations
Both while and for loops are used for variable iterations

The compression offset map grows to . . . . . . . . GB per terabyte compressed.

1 Mark(s)

Your Answer:

1-3 1-3
10-16 10-16
20-22 20-22
0-1 0-1

The volume is measured by help of a curve made in measuring cylinder called:

1 Mark(s)

Your Answer:

meniscus curve meniscus curve
round curve round curve
slanting curve slanting curve
volume curve volume curve

What is the role of the import statement in Python?

1 Mark(s)

Your Answer:

To declare variables To declare variables
To define classes To define classes
To import external modules To import external modules
To output text to the console To output text to the console

What is the purpose of the try-catch block in C#?

1 Mark(s)

Your Answer:

To handle exceptions that may occur in a block of code
To throw exceptions To throw exceptions
To declare custom exceptions To declare custom exceptions
To clean up resources in case of an exception

What is the main advantage of using encapsulation in Object-Oriented Programming?

1 Mark(s)

Your Answer:

It allows multiple classes to inherit from each other
It creates multiple instances of a class
It hides the internal state of an object and restricts access to it
It allows objects of different classes to be treated as objects of a common superclass

The bandwidth of an audio signal (speech and music) is usually:

1 Mark(s)

Your Answer:

15 kHz 15 kHz
5 kHz 5 kHz
6 kHz 6 kHz
10 kHz 10 kHz

The set of all logical addresses generated by a program is referred to as a:

1 Mark(s)

Your Answer:

Memory Addresses Memory Addresses
Physical Addresses Physical Addresses
Logical address Space Logical address Space
Buffer Addresses Buffer Addresses

: How can you find the number of elements in an array int array[10]; in C?

1 Mark(s)

Your Answer:

sizeof(array) / sizeof(array[0]) sizeof(array) / sizeof(array[0])
sizeof(array) / sizeof(int) sizeof(array) / sizeof(int)
sizeof(array[0]) / sizeof(array) sizeof(array[0]) / sizeof(array)
sizeof(int) / sizeof(array) sizeof(int) / sizeof(array)

Which one of the following is a data link protocol ?

1 Mark(s)

Your Answer:

ethernet ethernet
point to point protocol point to point protocol
HDLC HDLC
all of these all of these

Which of the following in Object Oriented Programming is supported by Function overloading and default arguments features of C++.

1 Mark(s)

Your Answer:

Inheritance Inheritance
Encapsulation Encapsulation
None of the above None of the above

In an ideal engine all processes are:

1 Mark(s)

Your Answer:

irreversible irreversible
reversible reversible
random random
constants constants

What is the purpose of the "throw" keyword in Java exception handling?

1 Mark(s)

Your Answer:

To explicitly throw an exception To explicitly throw an exception
To catch exceptions To catch exceptions
To specify exception types To specify exception types
To declare a method as "throws" To declare a method as "throws"

Format of an email address is:

1 Mark(s)

Your Answer:

user name# DSN address user name# DSN address
user name& DSN address user name& DSN address
user name@ DSN address user name@ DSN address
user name$DSN.com user name$DSN.com

What is the value stored in t1[2] when the following code is executed? #include<stdio.h> int get_min(int a, int b) { if(a<b) return a; return b; } int minimum_time_required(int reach[][3],int spent[][4], int *entry, int *exit, int n) { int t1[n], t2[n],i; t1[0] = entry[0] + spent[0][0]; t2[0] = entry[1] + spent[1][0]; for(i = 1; i < n; i++) { t1[i] = get_min(t1[i-1]+spent[0][i], t2[i-1]+reach[1][i-1]+spent[0][i]); t2[i] = get_min(t2[i-1]+spent[1][i], t1[i-1]+reach[0][i-1]+spent[1][i]); } return get_min(t1[n-1]+exit[0], t2[n-1]+exit[1]); } int main() { int time_to_reach[][3] = {{6, 1, 5}, {2, 4, 7}}; int time_spent[][4] = {{6, 5, 4, 7}, {5, 10, 2, 6}}; int entry_time[2] = {5, 6}; int exit_time[2] = {8, 9}; int num_of_stations = 4; int ans = minimum_time_required(time_to_reach, time_spent, entry_time, exit_time, num_of_stations); printf("%d",ans); return 0; }

1 Mark(s)

Your Answer:

16 16
18 18
20 20
22 22

Which is an example of a formula?

1 Mark(s)

Your Answer:

Add(A1:A2) Add(A1:A2)
SUM(A1:A2) SUM(A1:A2)
=A1 +A2 =A1 +A2
None of these None of these

What are .bas, .doc, .htm examples of in computing?

1 Mark(s)

Your Answer:

Extensions Extensions
Protocols Protocols
Database Database
Domains Domains
None of these None of these

Coefficient of thermal expansion of pyrex glass is:

1 Mark(s)

Your Answer:

1.2x10-6/C° 1.2x10-6/C°
3.2x10-6/C° 3.2x10-6/C°
9x10-4/C° 9x10-4/C°
11x10-4/C° 11x10-4/C°

What is the shortcut key for grammar and spelling to check in document?

1 Mark(s)

Your Answer:

F1 F1
F2 F2
F5 F5
F7 F7

The bridge can be operated on which of the following layers?

1 Mark(s)

Your Answer:

physical and data link layer physical and data link layer
physical and sessional layer physical and sessional layer
application and data link layer application and data link layer
physical and presentation layer physical and presentation layer

Which of the following term is best defined by the statement: “The names of the operations in the ‘provides’ and ‘requires’ interfaces are different.” ?

1 Mark(s)

Your Answer:

Parameter incompatibility Parameter incompatibility
Operation incompleteness Operation incompleteness
Operation incompatibility Operation incompatibility
None of the mentioned None of the mentioned

What is the output for the below code? interface A{ public void printValue(); } public class Test{ public static void main (String[] args){ A a1 = new A(){ public void printValue(){ System.out.println("A"); } }; a1.printValue(); } }

1 Mark(s)

Your Answer:

Compilation fails due to an error on line 3
A A
Compilation fails due to an error on line 8
null null
None of these None of these

What will be the output of the following PHP code? <?php $fruits = array ("apple", "mango", "peach", "pear", "orange"); $subset = array_splice ($fruits, 2); print_r ($fruits); ?>

1 Mark(s)

Your Answer:

Error Error
Array ( [0] => apple [1] => mango [2] => peach )
Array ( [0] => apple [1] => mango ) Array ( [0] => apple [1] => mango )
Array ( [0] => pear [1] => orange ) Array ( [0] => pear [1] => orange )

Cristian Doppler described the Doppler effect in:

1 Mark(s)

Your Answer:

1820 1820
1842 1842
1920 1920
1947 1947

Who is called the Father of Internet?

1 Mark(s)

Your Answer:

Vint Cerf Vint Cerf
Charles Babbage Charles Babbage
Tim Berners Lee Tim Berners Lee
None of these None of these

Once a table of contents is created, there are some changes in the text, now the created table of content ______?

1 Mark(s)

Your Answer:

Need to be created again Need to be created again
Can be updated Can be updated
Cannot be updated Cannot be updated
None of these None of these

Which of the following specifies the expiry time for cached location information?

1 Mark(s)

Your Answer:

maximumAge maximumAge
timeout timeout
enableHighAccuracy enableHighAccuracy
position_unavailable position_unavailable

Which of the following is not a JDBC connection isolation levels?

1 Mark(s)

Your Answer:

TRANSACTION_NONE TRANSACTION_NONE
TRANSACTION_READ_COMMITTED TRANSACTION_READ_COMMITTED
TRANSACTION_REPEATABLE_READ TRANSACTION_REPEATABLE_READ
TRANSACTION_NONREPEATABLE_READ TRANSACTION_NONREPEATABLE_READ

What establishes the profile of end-users of the system ?

1 Mark(s)

Your Answer:

design model design model
user’s model user’s model
mental image mental image
system image system image

What will be the output of the following Java program? class leftshift_operator { public static void main(String args[]) { byte x = 64; int i; byte y; i = x

1 Mark(s)

Your Answer:

0 64 0 64
64 0 64 0
0 256 0 256
256 0 256 0

Different meta tags are defined by changing the __________ attribute to a valid value.

1 Mark(s)

Your Answer:

scheme scheme
content content
http-equiv http-equiv
name name

On heating sugar gives off:

1 Mark(s)

Your Answer:

carbon(black solid0 carbon(black solid0
water vapors water vapors
both a and b both a and b
carbon dioxide carbon dioxide

In Solaris, on a typical implementation the process structure includes the process:

1 Mark(s)

Your Answer:

Address Address
ID ID
Location Location
Index Index

LightTPD is not used by

1 Mark(s)

Your Answer:

You Tube You Tube
Wikipedia Wikipedia
Meebo Meebo
LocalHost LocalHost

In IPv4, the total size of the datagram must be less than the _______.

1 Mark(s)

Your Answer:

MUT MUT
MAT MAT
MTU MTU
None of the above None of the above

A common name for software errors is:?

1 Mark(s)

Your Answer:

Buses Buses
Trojan Trojan
Logic Bombs Logic Bombs
Bugs Answer Bugs Answer

In a graph with weighted edges, what does the term "relaxation" refer to in shortest path algorithms?

1 Mark(s)

Your Answer:

Expanding the adjacency list of a vertex.
Removing edges that cause negative cycles.
Updating the shortest path estimate if a shorter path is found.
Adding a new vertex to the graph. Adding a new vertex to the graph.

What will be the output of the following PHP code ? <?php $x=0; function fun() { echo $GLOBALS['x']; $GLOBALS['x']++; } fun(); fun(); fun(); ?>

1 Mark(s)

Your Answer:

000 000
012 012
123 123
Error Error

A cell that is modified to boost the performance of nerve impulse is known as:

1 Mark(s)

Your Answer:

palisade palisade
root hair root hair
nerve cell nerve cell
red blood red blood

Choose the effective stringBuilder method which helps in producing output for the following C# code? static void Main(string[] args) { StringBuilder s = new StringBuilder("object"); s./*______*/("Oriented Language"); Console.WriteLine(s); Console.ReadLine(); } Output : objectOriented Language

1 Mark(s)

Your Answer:

Insert() Insert()
Add() Add()
Append() Append()
Join() Join()

What will be the output of the following C code? #include <stdio.h> void main() { double k = 0; for (k = 0.0; k

1 Mark(s)

Your Answer:

Run time error Run time error
Hello is printed thrice Hello is printed thrice
Hello is printed twice Hello is printed twice
Hello is printed infinitely Hello is printed infinitely

Which of the following is a HyperGraph, where V is the set of vertices, E is the set of edges?

1 Mark(s)

Your Answer:

V = {v1, v2, v3} E = {e1, e2} = {{v2, v3} {v1, v3}}
V = {v1, v2} E = {e1} = {{v1, v2}} V = {v1, v2} E = {e1} = {{v1, v2}}
V = {v1, v2, v3} E = {e1, e2, e3} = {{v2, v3}{v3, v1}{v2, v1}}
All of the mentioned All of the mentioned

What is a lambda in Ruby?

1 Mark(s)

Your Answer:

A type of anonymous function similar to a proc, but with stricter argument checking
A block of code that is passed to methods as an argument
A predefined set of instructions A predefined set of instructions
A method that takes no arguments A method that takes no arguments

Study the following program: try: if '2' != 2: raise "JavaTpoint" else: print("JavaTpoint has not exist") except "JavaTpoint": print ("JavaTpoint has exist") What will be the output of this statement? ``` try: if '2' != 2: raise "JavaTpoint" else: print("JavaTpoint has not exist") except "JavaTpoint": print ("JavaTpoint has exist") ```

1 Mark(s)

Your Answer:

invalid code invalid code
JavaTpoint has not exist JavaTpoint has not exist
JavaTpoint has exist JavaTpoint has exist
none of these above none of these above

This the right way to comment a single line. “Ruby”.length # I’m a single line comment!

1 Mark(s)

Your Answer:

True True
False False

Combination of two or more topologies are called _______ ?

1 Mark(s)

Your Answer:

Hybrid Hybrid
Star Star
Bus Bus
Ring Ring

Product of torque and angular velocity is equals to:

1 Mark(s)

Your Answer:

power power
kinetic energy kinetic energy
rotational inertia rotational inertia
angular acceleration angular acceleration

Time sharing systems of the computer system have:

1 Mark(s)

Your Answer:

clusters clusters
nodes nodes
file system file system
Data Blocks Data Blocks

Which of the following is correct for inline function definition outside class?

1 Mark(s)

Your Answer:

inline int MyClass::func() { return 1; }
int inline MyClass::func() { return 1; }
MyClass::func inline int() { return 1; }
static inline MyClass::func() { return 1; }

How does double hashing work to resolve collisions in a hash table?

1 Mark(s)

Your Answer:

By linking colliding elements in a list.
By using a quadratic function to find a new slot.
By probing linearly for the next open slot.
By using a second hash function to compute a new index.

Evaluating Your Answers

Computer Networks Mock Test 7 : Question 1 of 57