Paper 2 CS · UNIT 03 · MOCK TEST

Programming Languages and Computer Graphics — Mock Test 4

25 questions · about 30 minutes. Press End Mock any time to see your score and the correct answers.

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Q1. Which of the following are correct uses of std::string constructors?
A. string s1;
B. string s2(s1);
C. string s3{7};
D. string s4{'a'};
E. string s5{7, 'a'};
Choose the most appropriate answer from the options given below:

AA, B, D, E only BA, B, C only CA, B, D only DA and B only

Q2. A corporate website's appearance varies according to the department that owns the documents, but all documents follow the corporate look and feel. The HR department does not need a separate style sheet; it needs only a sheet containing the differences from the corporate sheet. Which statements justify this scenario?
A. Style sheets cannot stack on each other
B. Style sheets can stack on each other
C. Style sheets can override each other
D. Style sheets cannot override each other
Choose the most appropriate answer from the options given below:

AA, C Only BB, C Only CB, D only DA, D only

Q3. Match List I with List II

List I	List II
A. 2-D Array Input	I. Liquid Crystal Display
B. Transmissive device	II. Flat-bed scanner
C. Binary image	III. Camera
D. 1-D Array input	IV. Inkjet printer

AA-I, B-III, C-II, D-IV BA-III, B-I, C-IV, D-II CA-III, B-I, C-II, D-IV DA-I, B-II, C-IV, D-III

Q4. Consider the following conditional code, which returns a Boolean value:

if ((x > 25) && (y > 100))
    return 'false';
else if ((x <= 25) && (y <= 100))
    return 'true';
else if ((x > 25) && (y <= 100))
    return 'false';
else
    return 'true';

Simplify it by filling in the blank with a single Boolean expression without changing the behaviour of the code:

if ( ________ )
    return 'true';
else
    return 'false';

Ax > 25 Bx <= 25 Cy > 100 Dy <= 100

Q5. Machine level language is a/an

AAssembly Language BLow-level language CHigh-level Language DTranslating Language

Q6. Which of the following is wrong about data types?

AThe number is always positive when the qualifier 'unsigned' is used. BThe number can be positive or negative when the qualifier 'signed' is used. CThe range of values for signed data types is more than that of unsigned data types. DThe leftmost bit in an unsigned data type is used to represent the value.

Q7. If a constructor 'Date' is declared explicit and has to be defined outside the class, which of the following is correct?

ADate::Date(int dd) { /* ... */ } Bexplicit Date::Date(int dd) { /* ... */ } CSuch a constructor cannot be defined DA constructor always has to be defined inside the class

Q8. Which one of the following allows the session to continue?

AWhen a user quits a browser BWhen the user logs out and is invalidated by the servlet CWhen the session is timed out due to inactivity DWhen the user refreshes the browser and there is a persistent cookie

Q9. Given a vector with Cartesian components (x, y), if scaling is done with the matrix [[0.5, 0], [0, 1.5]], which of the following are true?
1. Decreases the vertical by three halves
2. Increases the vertical by three halves
3. Doubles the horizontal
4. Halves the horizontal
Choose the correct answer from the options given below:

A1 and 3 only B1 and 4 only C2 and 3 only D2 and 4 only

Q10. Which of the following lists defined in HTML share a similar element?
1. Unordered lists
2. Ordered lists
3. Definition lists
4. Correlated lists
5. Enumerated lists
Choose the most appropriate answer from the options given below:

A1, 2 only B1, 3, 5 only C1, 2, 3 only D1, 3, 4 only

Q11. Match List I with List II.
Choose the correct answer from the options given below:

List I	List II
a. If the implementation of generated or derived classes differs only through a parameter, we have	I. to use a class hierarchy
b. If the actual types of objects used cannot be known at compile time, we have	II. improved run-time efficiency
c. If inline operations are essential and templates are used, we have	III. to use templates
d. To gain access to differing instances of derived classes through a base, we have	IV. to use explicit casting

Aa-I, b-II, c-IV, d-III Ba-III, b-I, c-II, d-IV Ca-I, b-III, c-II, d-IV Da-II, b-I, c-III, d-IV

Q12. In what sequence are initialisation, testing and execution of the body done in a do-while loop?
I. Commenting
II. Execution of the body
III. Initialisation
IV. Testing the condition

AIV, II, III BIV, III, II CIII, I, II DIII, II, IV

Q13. Assertion A: A raster-scan device is a CRT graphics device and can use a television monitor for display.
Reason R: In a raster-scan display the picture is composed of a series of dots traced out as horizontal lines. Television works in a similar fashion.
Choose the correct answer.

ABoth A and R are true and R is the correct explanation of A BBoth A and R are true but R is not the correct explanation of A CA is true but R is false DA is false but R is true

Q14. The hidden-surface removal problem with a minimal 3D pipeline can be solved with

APainter's algorithm BWindow clipping algorithm CBrute-force rasterisation algorithm DFlood-fill algorithm

Q15. The condition num != 65 cannot be replaced by

Anum > 65 || num < 65 B!(num == 65) Cnum − 65 D!(num − 65)

Q16. Pointers cannot be used to

Afind the address of a variable in memory Breference a value directly Csimulate call by reference Dmanipulate dynamic data structures

Q17. Which mechanism in XML allows organisations to specify globally unique names as element tags in documents?

Aroot Bheader Cschema Dnamespace

Q18. The following transformation (with general entries in all four rows) is called

[x']   [a1 b1 c1 d1] [x]
[y'] = [a2 b2 c2 d2] [y]
[z']   [a3 b3 c3 d3] [z]
[w']   [e  f  g  h ] [1]

AScaling BShear CHomography DSteganography

Q19. A top-down approach to programming calls for:
Statement I: Working from the general to the specific.
Statement II: Postponing the minor decisions.
Statement III: A systematic approach.
Statement IV: Intermediate coding of the problem.
Which of the following is true?

AStatement I only BStatements I and II only CStatements I, II and III only DStatements I, II and IV only

Q20. Which of the following is NOT a logical error?

AUsing '=' instead of '==' to determine if two values are equal BDivide by zero CFailing to initialise counter and total variables before the body of a loop DUsing commas instead of the two required semicolons in a for loop header

Q21. Which statement is false?

AAll function calls in C pass arguments using call by value. BCall by reference enables a called function to modify a variable in the calling function. CCall by value is always more efficient than call by reference. DProgrammers use pointers and the indirection operator to simulate call by reference.

Q22. The steps for analysis and design of object oriented system:
(A) Draw interaction diagrams
(B) Draw state chart and object diagram
(C) Draw use case and activity diagram
(D) Draw component and deployment diagram
(E) Draw class diagram

A(E) → (B) → (A) → (C) → (D) B(B) → (A) → (E) → (D) → (C) C(E) → (C) → (B) → (D) → (A) D(C) → (A) → (E) → (B) → (D)

Q23. Given below are two statements:
Assertion A: Cohesion is a qualitative indication of the degree to which a module can be written more compactly and is able to complete its function in a timely manner.
Reason R: Cohesion is a qualitative indication of the degree to which a module is connected to other modules and the outside world.
In the light of the above statements, choose the correct answer from the options given below:

ABoth A and R are correct and R is the correct explanation of A BBoth A and R are correct but R is NOT the correct explanation of A CA is correct but R is not correct DA is not correct but R is correct

Q24. Modules X and Y operate on the same input and output, then the cohesion is

ALogical cohesion BSequential cohesion CProcedural cohesion DCommunication cohesion

Q25. Arrange the following types of Cohesion from best to worst type.
A. Logical Cohesion
B. Sequential Cohesion
C. Communication Cohesion
D. Temporal Cohesion
E. Procedural Cohesion
Choose the correct answer from the options given below:

AA → D → E → C → B BA → E → D → C → B CB → E → C → D → A DB → C → E → D → A