CS504 - Software Engineering – I
Quiz No. 3
Str = 0;// str is string Which rewritten from of above line of code is more in line with the self-documentation philosophy than the code above.
Str = false;
Str = NULL;
Str = '\0;
Str = 0.0;
Struct packed_struct { unsigned int f1:1;} pack; Here in "packed_struct":
Value of f1 =1
Size of f1 = 1 bit
Value of f1 should not exceede 1 (Not Sure)
None of given options
In the switch statement, cases should always end with a -------statment.
Switch
Go
Break
Stop
Bit fields are a convenient way to express many difficult operations. However, bit fields suffer from one problem
Lack of Usability
Lack of Security
Lack of Performance
Lack of Portability
If(!(block < activeBlock)) is equvivalent to:
If ((block < activeBlock))
If ((block == activeBlock))
If ((block >= activeBlock))
None of the given
Bit fields allow the packing of data in a structure. Using Bit fields we can:
Read 9 bit integers
Avoid memory leakages
Avoid memory overflow
Avoid syntax errors
The order in which bytes of one word are stored is _________ dependent
Hardware
Software
Language
Syntax
In order to write a portable code which of the following guideline will be helpful:
Stick to the standards
Program in the mainstream
Size of data types
All of give options
Complex expressions:
Make the code easy to modify
Make the code difficult to modify
Make the code easy to understand
Does not effect understandability
In the switch statement, cases should always end with a -------statment.
Switch
Go
Break
Stop
x = 0; // x is floating pt Which rewritten form of above line of code is more in line with the self-documentation philosophy than the code above.
x = false
x = NULL
x = 0.0;
x = '\0'
using proper paranthesis normally makes the code
easy to read
easy to understand
less ambiguous
All of the given options
The use of comments should be minimized by making the code self-documenting by appropriate name choices and an explicit logical structure.
True
False
Bit fields allow the packing of data in a structure. using Bit fields we can:
Read 9 bit integers
Avoid memory leakages
Avoid memory overflow
Avoid syntax errors
1) x = (a + 2 > 3)? a : a-1 ; 2) if((a + 2)> 3) x = a; else x = a - 1;
Statement (2) is more complex than (1)
Statement (2) is more complex than (1)
Both statements are very complex
None of the given options
80/20 rule states that:
you spend 80 percent of your time in 20 percent of the code
you spend 20 percent of your time in 80 percent of the code
We should try to optimized 80 percent or at least 20 percent of the code
None of the given options.
Be very careful when you use functions with side effects – functions that change the values of the ________
Objects
Classes
Structures
Variables
Comma ( , ) is very dangerous because
Select correct option:
Compiler does not recognise this symbol
It creates linkage problem
It causes side effects
All of the given options (Not Sure)
The C/C++ language has not specified whether ____ is arithmetic or logical.
Select correct option:
Right shift >>
Right shift <<
&&
||
In order to make a code more portable, Instead of using vendor specific language extensions, use _______ as much as possible
Select correct option:
STL
ANSI
ISO
CMMI
The order in which bytes of one word are stored is _________ dependent
Select correct option:
hardware
software
language
syntax
Be very careful when you use functions with side effects – functions that change the values of the ________
Select correct option:
Objects
Classes
Structures
Variables
When a small set of functions (which use each other) is so overwhelmingly the bottleneck, there are two alternatives:
Select correct option:
use a better algorithm OR re-write the code
debug the code OR place assertions in code
remove the functions OR add more functions
changed programming language OR compiler at least
_______ cause major portability issues
Select correct option:
Loops (Not Sure)
Bugs in code
Sizes of data types
Conditional Structures
In the switch statement, cases should always end with a -------statment.
Select correct option:
Switch
Go
Break
Stop
Some bit field members are stored: I) left to right II) right to left III) in circular array
Select correct option:
only (I) is true
Only (II) is true
Both (I) and (II) are true
All of the options (I, II and III) are true
x = 0; // x is floating pt Which rewritten form of above line of code is more in line with the self-documentation philosophy than the code above.
x = false
x = NULL
x = 0.0;
x = '\0'
Comma ( , ) is very dangerous because
Compiler does not recognise this symbol
It creates linkage problem
It causes side effects
All of the given options(Not sure)
using proper paranthesis normally makes the code
easy to read
easy to understand
less ambiguous
All of the given options
The use of comments should be minimized by making the code self-documenting by appropriate name choices and an explicit logical structure.
True
False
Bit fields allow the packing of data in a structure. using Bit fields we can:
Read 9 bit integers
avoid memory leakages
avoid memory overflow
Avoid syntax errors
1) x = (a + 2 > 3)? a : a-1 ; 2) if((a + 2)> 3) x = a; else x = a - 1;
Statement (2) is more complex than (1)
Statement (2) is more complex than (1)
Both statements are very complex
None of the given options
80/20 rule states that:
you spend 80 percent of your time in 20 percent of the code
you spend 20 percent of your time in 80 percent of the code
We should try to optimized 80 percent or at least 20 percent of the code
None of the given options.
Be very careful when you use functions with side effects – functions that change the values of the ________
Objects
Classes
Structures
Variables
A test case involves
Input/output specification plus a statement of the function under test
Steps to perform the function
Expected results that the software application produces
All of the given options
The C/C++ language has not specified whether ____ is arithmetic or logical.
Select correct option:
Right shift >>
Right shift <<
&&
||
If an application fulfills its specifications but deviates from users expectations or their desired behavior. This means, software is verified but not ------------
Select correct option:
Validated
Corrected
Checked
Traced
The raising of the imaginary error flag is simply called raising or ________ an error
Select correct option:
Catching
Casting
Throwing
None of given options
In order to make a code more portable, Instead of using vendor specific language extensions, use _______ as much as possible
Select correct option:
STL
ANSI
ISO
CMMI
struct packed_struct { unsigned int f1:1; } pack; Here in "packed_struct":
Select correct option:
value of f1 = 1
size of f1 = 1 bit
value of f1 should not exceede 1
None of given options
The idea behind exception handling is to raise some error flag every time ________
Select correct option:
The code compiles
The code links
Memory is allocated
Something goes wrong
Bit fields allow the packing of data in a structure. using Bit fields we can:
Select correct option:
Read 9 bit integers
avoid memory leakages
avoid memory overflow
Avoid syntax errors
The order in which bytes of one word are stored is _________ dependent
Select correct option:
hardware
software
language
syntax
A __________ is a variance from a desired product attribute.
Select correct option:
Exception
Error
Mistake
Defect
The C/C++ language does not define the alignment of items within
Select correct option:
structures
classes
unions
All of the given options
The raising of the imaginary error flag is simply called raising or ________ an error
Select correct option:
Catching
Casting
Throwing
None of given options
Consider the following statement: int a,b=10; Which of the following is correct:
Select correct option:
variable "a" is initialized to 10
Variable "b" is initialized to 10
Both variables "a" and "b" are initialized to 10
variables can not be initialized this way
Exception handling is a powerful technique that separates error-handling code from ______ code.
Select correct option:
Normal
Faulty
Buggy
Complex
Bit fields are a convenient way to express many difficult operations. However, bit fields suffer from one problem
Select correct option:
Lack of usability
Lack of security
Lack of performance
Lack of portability
The complexity of a program may ______ if there are exceptional paths in it
Select correct option:
Decrease
Increase
Remain same
All of given options
80/20 rule states that:
Select correct option:
you spend 80 percent of your time in 20 percent of the code
you spend 20 percent of your time in 80 percent of the code
We should try to optimized 80 percent or at least 20 percent of the code
None of the given options.
When an error is thrown the overall system (on the lookout for this error flag) responds by ______ the error.
Select correct option:
Ignoring
Casting
Catching
All of the given options(Not Sure)
Comments are not syntax checked
TRUE
FALSE
Modularity is a tool that can help us in increasing the size of individual functions, making them less readable.
True
False
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Virtual University of Pakistan*** IT n CS Blog
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