Database Systems Mock Test 17

A mixture of oxygen gas and 'acetylene' is used for:

1 Mark(s)

Your Answer:

scuba diving scuba diving
welding welding
spaceships spaceships
hot air balloons hot air balloons

Master slave relationship in the computer system is used by:

1 Mark(s)

Your Answer:

symmetric multiprocessor symmetric multiprocessor
asymmetric multiprocessor asymmetric multiprocessor
symmetric multiprocessing symmetric multiprocessing
asymmetric multiprocessing asymmetric multiprocessing

Which of the following is unicellular?

1 Mark(s)

Your Answer:

A) Human A) Human
B) Yeast B) Yeast
C) Mould C) Mould
D) Tree D) Tree

What happens if an exception is raised within an ensure block in Ruby?

1 Mark(s)

Your Answer:

The exception is handled by an outer rescue block, if present
The program terminates with an error message
The program continues execution as normal
The program enters a loop to retry the operation

What will be the output of the following Python code? def f(x): def f1(*args, **kwargs): print("*"* 5) x(*args, **kwargs) print("*"* 5) return f1 def a(x): def f1(*args, **kwargs): print("%"* 5) x(*args, **kwargs) print("%"* 5) return f1 @f @a def p(m): print(m) p("hello")

1 Mark(s)

Your Answer:

***** %%%%% hello %%%%% ***** ***** %%%%% hello %%%%% *****
Error Error
*****%%%%%hello%%%%%***** *****%%%%%hello%%%%%*****
hello hello

What executable unit gets created when we build an ASP.Net application ?

1 Mark(s)

Your Answer:

. EXE . EXE
. COM . COM
. DLL . DLL
None of the above None of the above

People having respiratory problems like asthma, are dosed medically with:

1 Mark(s)

Your Answer:

calcium calcium
oxygen oxygen
nitrogen nitrogen
magnesium magnesium

What is the purpose of the initialize method in Ruby classes?

1 Mark(s)

Your Answer:

To initialize class variables To initialize class variables
To define instance variables To define instance variables
To define class methods To define class methods
To define instance methods To define instance methods

Which of the following are not the properties of a canvas object?

1 Mark(s)

Your Answer:

fillStyle fillStyle
strokeStyle strokeStyle
lineWidth lineWidth
lineSize lineSize

Topology which takes more cable than e.g. a bus, but the benefit is that if a cable fails, only one node will be brought down is:

1 Mark(s)

Your Answer:

bus topology bus topology
ring topology ring topology
star topology star topology
mesh topology mesh topology

Which of the following problems can be solved efficiently using a stack?

1 Mark(s)

Your Answer:

Balanced parentheses Balanced parentheses
Sorting Sorting
Searching Searching
Finding shortest path Finding shortest path

Size and Complexity are a part of____________________?

1 Mark(s)

Your Answer:

Product Metrics Product Metrics
Process Metrics Process Metrics
Project Metrics Project Metrics
All of the mentioned All of the mentioned

A dimensionless measure that describes how oscillations in a system decay after a disturbance is called:

1 Mark(s)

Your Answer:

damping ratio damping ratio
diminishing ratio diminishing ratio
random ratio random ratio
lead factor lead factor

What is a multicast delegate in C#?

1 Mark(s)

Your Answer:

A delegate that is used for asynchronous operations
A delegate that can only invoke a single method
A delegate that can hold references to multiple methods
A delegate that is defined with multiple parameters

What is the CSS Extension Prefixes for WebKit?

1 Mark(s)

Your Answer:

-webkit -webkit
-o- -o-
-web -web
-chrome -chrome

What is the purpose of a commit point in a transaction?

1 Mark(s)

Your Answer:

To indicate the start of a transaction To indicate the start of a transaction
To mark the end of a transaction and make its changes permanent
To schedule the execution of a transaction
To abort a transaction To abort a transaction

What will be the output of the following C++ code? #include <iostream> #include <Valarray> using namespace std; int main() { Valarray<int> varr = { 1, 2, 3, 4, 5 }; for (int &x: varr) cout << x << " "; cout<<endl; varr = varr.shift(2); for (int &x: varr) cout << x << " "; return 0; }

1 Mark(s)

Your Answer:

1 2 3 4 5 3 4 5 0 0 1 2 3 4 5 3 4 5 0 0
1 2 3 4 5 0 0 3 4 5 1 2 3 4 5 0 0 3 4 5
1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
1 2 3 4 5 3 4 5 1 2 1 2 3 4 5 3 4 5 1 2

Which of the following symbols represent leaf nodes? i. Δ ii. ◊ iii. ∇ iv. T v. ⊥

1 Mark(s)

Your Answer:

iv and v iv and v
v v
i and iii i and iii
ii ii

What is the purpose of the __name__ variable in a Python module?

1 Mark(s)

Your Answer:

It indicates whether the module is being run as the main program or imported
It stores the code of the module It stores the code of the module
It defines a new variable It defines a new variable
It is used to create aliases for modules

The rotting of bread and orange is due to a:

1 Mark(s)

Your Answer:

virus virus
bacteria bacteria
fungi fungi
all of them all of them

What is the purpose of the __slots__ attribute in Python classes?

1 Mark(s)

Your Answer:

To define class attributes To define class attributes
To create a new instance of the class To create a new instance of the class
To restrict the set of attributes that can be assigned to instances
To access superclass attributes directly

Which is an equivalent code to invoke a function m of class o that expects two arguments x and y?

1 Mark(s)

Your Answer:

o(x,y); o(x,y);
o.m(x) && o.m(y); o.m(x) && o.m(y);
m(x,y); m(x,y);
o.m(x,y); o.m(x,y);

System is which two or more nodes are joint together is called:

1 Mark(s)

Your Answer:

dual core dual core
blade server blade server
clustered system clustered system
single core single core

In Java, what is the return type of a method that does not return any value?

1 Mark(s)

Your Answer:

String String
void void
Object Object
None of These None of These

Huffman Coding is a:

1 Mark(s)

Your Answer:

Greedy Algorithm Greedy Algorithm
DP Algorithm DP Algorithm
Sorting Algorithm Sorting Algorithm
Searching Algorithm Searching Algorithm

What is the product of the probability of incurring a loss due to the risk and the potential magnitude of that loss ?

1 Mark(s)

Your Answer:

Risk exposure Risk exposure
Risk prioritization Risk prioritization
Risk analysis Risk analysis
All of the mentioned All of the mentioned

The biggest advantage of mesh topology is of providing:

1 Mark(s)

Your Answer:

Reliability Reliability
Flexibility Flexibility
Security Security
Adaptation Adaptation

In C, what is the purpose of the 'recursion' in a function?

1 Mark(s)

Your Answer:

To create an infinite loop To create an infinite loop
To make the function faster To make the function faster
To make the function return a constant value
To call the function itself To call the function itself

A few pieces of zinc were treated with dilute H 2 SO 4 in a test tube. Which of the following observations is correct?

1 Mark(s)

Your Answer:

A) It is a physical change, and zinc dissolves.
B) It is a physical change, and H 2 gas is evolved.
C) It is a chemical change, and zinc dissolves.
D) It is a chemical change; zinc dissolves, and H 2 gas is evolved.

What is the purpose of the 'std::this_thread::sleep_for' function in C++ multi-threading?

1 Mark(s)

Your Answer:

To block the execution of a thread To block the execution of a thread
To synchronize the execution of threads To synchronize the execution of threads
To terminate the current thread To terminate the current thread
To make the current thread sleep for a specified duration

Which of the following defines 1% of viewport height?

1 Mark(s)

Your Answer:

px px
vh vh
vw vw
vmin vmin

What is the purpose of the RegExp method test()?

1 Mark(s)

Your Answer:

Tests for a match in its float parameter
Tests for a match in its string parameter
Tests for a match in its integer parameter
None of the mentioned None of the mentioned

What is the highest index for an array with 10 elements in C?

1 Mark(s)

Your Answer:

5 5
9 9
10 10
11 11

The command to delete the relation is:

1 Mark(s)

Your Answer:

Delete from *example* Delete from *example*
Delete about *example* Delete about *example*
Abort from *example* Abort from *example*
Abort about *example* Abort about *example*

Which of the following is true concerning open-source DBMS?

1 Mark(s)

Your Answer:

Is free or nearly free database software whose source code is publicly available
Is free or nearly free database software whose source code is not publicly available
Is not competitive against PC-oriented packages and is fully SQL compliant
Is competitive against PC-oriented packages and is not fully SQL compliant

What will be the output of the following C# code? enum days:int { sunday = -3, monday, tuesday } Console.WriteLine((int)days.sunday); Console.WriteLine((int)days.monday); Console.WriteLine((int)days.tuesday);

1 Mark(s)

Your Answer:

-3 0 1 -3 0 1
0 1 2 0 1 2
-3 -2 -1 -3 -2 -1
sunday monday tuesday sunday monday tuesday

Evaluating Your Answers

Database Systems Mock Test 17 : Question 1 of 36