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IBPS

Explore popular questions from Professional Knowledge (IT) for IBPS. This collection covers Professional Knowledge (IT) previous year IBPS questions hand picked by experienced teachers.

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Q 1. Identify the addressing modes of below instructions and match them :
(A) ADI : (1) Immediate addressing
(B) STA : (2) Direct addressing
(C) CMA : (3) Implied addressing
(D) SUB : (4) Register addressing

A-1,B-2,C-3,D-4

B

A-2,B-1,C-4,D-3

C

A-3,B-2,C-1,D-4

D

A-4,B-3,C-2,D-1

E

None of these

Explanation

The instruction ADI adds some content to the accumulator. It is an immediate addressing mode instruction. The instruction STA stores the contents of the accumulator in the particular memory location specified as operand CMA instruction takes complement of the contents of the accumulator. SUB instruction subtracts the contents of the register to the contents of the accumulator.

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Q 2. Which of the following IP address class is a multicast address?

A

Class A

B

Class B

C

Class C

Class D

E

None of these

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Q 3. While unit testing a module, it is found that for a set of test data, maximum 90% of the code alone were tested with a probability of success 0.9. The reliability of the module is

A

atleast greater than 0.9

B

equal to 0.9

atmost 0.81

D

atleast 1/0.81

E

None of these

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Q 4. The common property of functional language and logical programming language :

Both are declarative

B

Both are based on ?-calculus

C

Both are procedural

D

Both are functional

E

None of these

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Q 5. On receiving an interrupt from an I/O device, the CPU

A

halts for predetermined time

branches off to the interrupt service routine after completion of the current instruction

C

branches off to the interrupt service routine immediately.

D

hands over control of address bus and data bus to the interrupting device

E

None of these

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Q 6. Negative numbers cannot be represented in

A

Signed magnitude form

B

'1' s complement form

C

'2' s complement form

Both 1's and 2's form

E

None of these

Explanation

Negative numbers can be represented in signed magnitude form, or '1' complement form or '2"s complement form. So the option is (D)

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Q 7. Working software is not available until late in the process in

Waterfall model

B

Prototyping model

C

Incremental model

D

Evolutionary Development model

E

None of these

Explanation

This is the disadvantage of waterfall model.

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Q 8. Equivalence partitioning is a _____________testing method that divides the input domain of a program into classes of data from which test cases can be derived

A

White box

Black box

C

Regression

D

Smoke

E

None of these

Explanation

In a black box testing the tester only knows the inputs and what would be the expected outcome, he does not know how the program arrives at those outputs. The tester does not ever examine the programming code and does not need any further knowledge of the program other than its specifications.

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Q 9. Match the following:

(a) Data link layeri. Flow control
(b) Network layerii. Node to node delivery
(c) Transport layeriii. Mail services
(d) Application layeriv. Routing

A

a-ii, b-i, c-iv, d-iii

a-ii, b-iv, c-i, d-iii

C

a-ii, b-i, c-iii, d-iv

D

a-ii, b-iv, c-iii, d-i

E

None of these

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Q 10. The versions of windows operating system like windows XP and window Vista uses following file system:

A

FAT-16

B

FAT-32

C

NTFS (NT File System)

All of the above

E

None of these

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Q 11. Which one of the following set of gates is best suited for 'parity' checking and 'parity' generation ?

A

AND, OR, NOT

B

NAND, NOR

EX-OR, EX-NOR

D

AND , XOR

E

None of these

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Q 12. Start and stop bits are used in serial communications for

A

Error detection

B

Error correction

Synchronization

D

Slowing down the communication

E

None of these

Explanation

The start and stop bits are used to synchronize the serial receivers.

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Q 13. For a data entry project for office staff who have never used computers before (user interface and user-friendliness are extremely important), one will use

A

Spiral model

B

Component based model

Prototyping

D

Waterfall model

E

None of these

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Q 14. The SQL Expression
Select distinct T. branch name from branch T, branch S where T. assets > S. assets and S. branch-city = DELHI
finds the name of

all branches that have greater asset than any branch located in DELHI.

B

all branches that have greater assets than allocated in DELHI.

C

the branch that has the greatest asset in DELHI.

D

any branch that has greater asset than any branch located in DELHI.

E

None of these

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Q 15. On receiving an interrupt from an I/O device, the CPU

A

halts for predetermined time

branches off to the interrupt service routine after completion of the current instruction.

C

branches off to the interrupt service routine immediately.

D

hands over control of address bus and data bus to the interrupting device

E

None of these

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Q 16. The number of bits required for an IPV6 address is

A

16

B

32

C

64

128

E

None of these

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Q 17. Which of the following statement is not true in context of strings in C language?

A

It is array of characters.

B

Last character of character array is always '10'.

C

C inserts the null character automatically

Any string in C can be read by the function get char '0'.

E

None of these

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Q 18. When simplified with Boolean Algebra (x + y)(x + z) simplifies to

A

x

B

x + x(y + z)

C

x(1 + yz)

x + yz

E

None of these

Explanation

When simplified with Boolean Algebra (x + y)(x + z) simplifies to x + yz
[(x + y) (x + z)] = xx + xz + xy + yz = x + xz + xy + yz (Qxx = x) = x(l+z) + xy + yz = x + xy + yz {Q(l+z) =1} = x(l + y) + yz =x + yz{Q(l+y)= 1}]

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Q 19. Which of the following table helps in representing the previous and next state of the sequential circuit prior to and after the clock pulse respectively?

A

Truth table

B

Characteristics table

excitation table

D

Both (a) and (b).

E

None of these

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Q 20. Which languages has recently become the defector standard for interfacing application programs with relational database system?

A

Oracle

SQL

C

Dbase

D

4GL

E

None of these

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Q 21. The C declaration in A [3] [5] of containing.......elements is itself an array containing......integers.

3, 5

B

5, 3

C

3, 3

D

5, 5

E

None of these

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Q 22. The digital logic family which has the lowest propagation delay time is

ECL

B

TTL

C

CMOS

D

PMOS

E

None of these

Explanation

The digital logic family which has the lowest propagation delay time is ECL (Lowest propagation delay time is possible in ECL because the transistors are used in difference amplifier configuration, in which they are never driven into saturation and thereby the storage time is eliminated).

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Q 23. Which of the following algorithm solves the all pair shortest path problem?

A

Dijkstra's algorithm

Floyd's algorithm

C

Prim's algorithm

D

Warshall's algorithm

E

None of these

Explanation

The Floyd-Warshall algorithm (also known as Floyd’s algorithm, Roy-Warshall algorithm, Roy-Floyd algorithm, or the WFI algorithm) is a graph analysis algorithm for finding shortest paths in a weighted graph (with positive or negative edge weights) and also for finding transitive closure of a relation R.

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Q 24. If storage class is missing in the array definition, by default it will be taken to be

A

Automatic

B

external

static

D

either automatic or external depending on the place of occurrence

E

None of these

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Q 25. The minimum number of comparisons required to determine if an integer appears more than n/2 times in a sorted array of n integers is

A

Θ (n)

Θ (logn)

C

Θ (log*n)

D

Θ (1)

E

None of these

Explanation

Since it is a sorted array, we can use binary search to identify the position of the first occurence of the given integer in (log{tex}n{/tex}) steps. If at all this integer repeats, its appearance has to be continuous because the array is sorted.