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Questions by soujanyareddy13
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NIELIT 2022 April Scientist B | Section B | Question: 83
Which of the following relational calculus expressions is not safe ? $\left\{t \mid \exists u \in R_1\left(t[A] = u[A]\right) \land \neg \exists s \in R_2 \left(t[A] = s[A]\right)\right\}$ ... (i) (ii) (iii) (iv)
Which of the following relational calculus expressions is not safe ?$\left\{t \mid \exists u \in R_1\left(t[A] = u[A]\right) \land \neg \exists s \in R_2 \left(t[A] = s[A...
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NIELIT 2022 April Scientist B | Section B | Question: 84
To carry out white box testing of a program, its flow chart representation is obtained as shown in the figure below: For basis path based testing of this program, its cyclomatic complexity is $5$ $4$ $3$ $2$
To carry out white box testing of a program, its flow chart representation is obtained as shown in the figure below:For basis path based testing of this program, its cycl...
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NIELIT 2022 April Scientist B | Section B | Question: 85
Match the following: 1) Waterfall model a) Specifications can be developed incrementally 2) Evolutionary model b) Inflexible partitioning of the project into stages 3) Component-based c) Explicit recognition of risk software engineering 4) Spiral development d) Requirement compromises are ...
Match the following:1) Waterfall modela) Specifications can be developed incrementally2) Evolutionary modelb) Inflexible partitioning of the project into stages 3) Compon...
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NIELIT 2022 April Scientist B | Section B | Question: 86
A Young tableau is a $\text{2D}$ array of integers increasing from left to right and from top to bottom. Any unfilled entries are marked with $\infty$, and hence there cannot be any entry to the right of, or below a $\infty$. The following Young ... than $1$) to be shifted, to remove $1$ from the given Young tableau is _____. $2$ $5$ $6$ $18$
A Young tableau is a $\text{2D}$ array of integers increasing from left to right and from top to bottom. Any unfilled entries are marked with $\infty$, and hence there ca...
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NIELIT 2022 April Scientist B | Section B | Question: 87
Consider the set of strings on $\{0,1\}$ in which, every substring of $3$ symbols has at most two zeros. For example, $001110$ and $011001$ are in the language, but $100010$ is not. All strings of length less than $3$ are also in the language. ...
Consider the set of strings on $\{0,1\}$ in which, every substring of $3$ symbols has at most two zeros. For example, $001110$ and $011001$ are in the language, but $1000...
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NIELIT 2022 April Scientist B | Section B | Question: 88
The secant method formula for finding the square root of a real number $\text{R}$ from the equation $x^{2} - \text{R} = 0$ is: $x_{i+1} = \frac{x_{i}.x_{i-1}}{x_{i} + x_{i+1}}$ $x_{i+1} = \frac{x_{i}.x_{i-1} + \text{R}}{x_{i} + x_{i-1}}$ ... $x_{i+1} = \frac{2x_{i}^{2} + x_{i}.x_{i-1} - \text{R}}{x_{i} + x_{i-1}}$
The secant method formula for finding the square root of a real number $\text{R}$ from the equation $x^{2} – \text{R} = 0$ is:$x_{i+1} = \frac{x_{i}.x_{i-1}}{x_{i} + x_...
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NIELIT 2022 April Scientist B | Section B | Question: 89
A company needs to develop digital signal processing software for one of its newest inventions. The software is expected to have $40000$ lines of code. The company needs to determine the effort in person-months needed to develop this software using the ... $234.25$ $932.50$ $287.80$ $122.40$
A company needs to develop digital signal processing software for one of its newest inventions. The software is expected to have $40000$ lines of code. The company needs ...
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NIELIT 2022 April Scientist B | Section B | Question: 90
A queue is implemented using a non-circular singly linked list. The queue has a head pointer and a tail pointer, as shown in the figure. Let $n$ denote the number of nodes in the queue. Let 'enqueue' be implemented by inserting a new node at the ... $\Theta(1), \Theta(n)$ $\Theta(n), \Theta(1)$ $\Theta(n), \Theta(n)$
A queue is implemented using a non-circular singly linked list. The queue has a head pointer and a tail pointer, as shown in the figure. Let $n$ denote the number of node...
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NIELIT 2022 April Scientist B | Section B | Question: 91
A layer-$4$ firewall (a device that can look at all protocol headers up to the transport layer) $\text{CANNOT}$ block entire $\text{HTTP}$ traffic during $9:00\; \text{PM}$ and $5:00 \; \text{AM}$ block all $\text{ICMP}$ traffic stop ... $9:00\; \text{PM}$ to $5:00\; \text{AM}$
A layer-$4$ firewall (a device that can look at all protocol headers up to the transport layer) $\text{CANNOT}$block entire $\text{HTTP}$ traffic during $9:00\; \text{PM}...
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NIELIT 2022 April Scientist B | Section B | Question: 92
$\text{L1}$ is a recursively enumerable language over $\Sigma$. An algorithm $A$ effectively enumerates its words as $w_1, w_2, w_3, \dots$ Define another language $\text{L2}$ over $\Sigma$ Union $\left\{\text{#}\right\}$ ... $\text{S2}$ is true but $\text{S1}$ is not necessarily true Neither is necessarily true
$\text{L1}$ is a recursively enumerable language over $\Sigma$. An algorithm $A$ effectively enumerates its words as $w_1, w_2, w_3, \dots$ Define another language $\text...
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NIELIT 2022 April Scientist B | Section B | Question: 93
A bandlimited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through : an $\text{RC}$ filter an envelope detector a $\text{PLL}$ an ideal low-pass filter with the appropriate bandwidth
A bandlimited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through :an $\text{RC}$ filteran envelope detectora $\text{PLL}$an...
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NIELIT 2022 April Scientist B | Section B | Question: 94
Consider a combination of $\text{T}$ and $\text{D}$ flip-flops connected as shown below. The output of the $\text{D}$ flipflop is connected to the input of the $\text{T}$ flip-flop and the output of the $\text{T}$ flip-flop is connected ... $3^{\text{rd}}$ cycle are $01$ and after the $4^{\text{th}}$ cycle are $01$ respectively
Consider a combination of $\text{T}$ and $\text{D}$ flip-flops connected as shown below. The output of the $\text{D}$ flipflop is connected to the input of the $\text{T}$...
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NIELIT 2022 April Scientist B | Section B | Question: 95
Consider the following C code: #include<stdio.h> int *assignval (int *x, int val) { *x = val; return x; } int main () { int *x = malloc(sizeof(int)); if (NULL == x) return; x = ... and not as shown. compiles successfully but execution may result in dangling pointer. compiles successfully but execution may result in memory leak.
Consider the following C code:#include<stdio.h int *assignval (int *x, int val) { *x = val; return x; } int main () { int *x = malloc(sizeof(int)); if (NULL == x) return;...
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NIELIT 2022 April Scientist B | Section B | Question: 96
Suppose we are sorting an array of eight integers using heapsort, and we have just finished some heapify (either maxheapify or minheapify) operations. The array now looks like this: $16 \; 14 \; 15 \; 10 \; 12 \; 27 \; 28$ How many heapify operations have been performed on root of heap ? $1$ $2$ $3$ or $4$ $5$ or $6$
Suppose we are sorting an array of eight integers using heapsort, and we have just finished some heapify (either maxheapify or minheapify) operations. The array now looks...
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NIELIT 2022 April Scientist B | Section B | Question: 97
A message is made up entirely of characters from the set $\text{X=\{P, Q, R, S, T\}}$ ... encoded using Huffman coding, then the expected length of the encoded message in bits is ______. $225$ $226$ $227$ $228$
A message is made up entirely of characters from the set $\text{X=\{P, Q, R, S, T\}}$. The table of probabilities for each of the characters is shown below:$$\begin{array...
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NIELIT 2022 April Scientist B | Section B | Question: 98
Consider a software project with the following information domain characteristics for calculation of function point metric. Number of external inputs $\text{(I)} = 30$ Number of external outputs $\text{(O)} = 60$ ... $612.06$ $212.05$ $305.09$ $806.9$
Consider a software project with the following information domain characteristics for calculation of function point metric.Number of external inputs $\text{(I)} = 30$Numb...
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NIELIT 2022 April Scientist B | Section B | Question: 99
A $5$ stage pipelined $\text{CPU}$ has the following sequence of stages: $\text{IF}$ - instruction fetch from instruction memory $\text{RD}$ - Instruction decode and register read $\text{EX}$ - Execute: $\text{ALU}$ operation for ... taken to complete the above sequence of instructions starting from the fetch of $I_1$? $8$ $10$ $12$ $15$
A $5$ stage pipelined $\text{CPU}$ has the following sequence of stages:$\text{IF}$ – instruction fetch from instruction memory$\text{RD}$ – Instruction decode and re...
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NIELIT 2022 April Scientist B | Section B | Question: 100
An operating system uses the Banker's algorithm for deadlock avoidance when managing the allocation of three resource types $\text{X, Y,}$ and $\text{Z}$ to three processes $\text{P0, P1},$ and $\text{P2}.$ The table given below ... $\text{REQ2}$ can be permitted. Neither $\text{REQ1}$ nor $\text{REQ2}$ can be permitted.
An operating system uses the Banker's algorithm for deadlock avoidance when managing the allocation of three resource types $\text{X, Y,}$ and $\text{Z}$ to three process...
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NIELIT 2022 April Scientist B | Section B | Question: 101
Consider two hosts $\text{X}$ and $\text{Y}$, connected by a single direct link of rate $10^6\; \text{bits/sec}$. The distance between the two hosts is $10,000\;\text{km}$ and the propagation speed along the link is $2 \times 10^8 \;\text{m/sec}$. ... $\text{q}=400$ $\text{p}=100$ and $\text{q}=50$ $\text{p}=400$ and $\text{q}=50$
Consider two hosts $\text{X}$ and $\text{Y}$, connected by a single direct link of rate $10^6\; \text{bits/sec}$. The distance between the two hosts is $10,000\;\text{km}...
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NIELIT 2022 April Scientist B | Section B | Question: 102
Consider a machine with $40 \; \text{MHz}$ processor which has run a benchmark program. The executed program consists of $100,000$ instruction executions, with the following instructions mix and clock cycle count. What will be the effective $\text{CPI, MIPS}$ ... $:4.87 \; \text{ms}$
Consider a machine with $40 \; \text{MHz}$ processor which has run a benchmark program. The executed program consists of $100,000$ instruction executions, with the follow...
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