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Recent questions tagged nielit2022apr-scientistb
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NIELIT 2022 April Scientist B | Section B | Question: 43
Consider the following types of languages: $\text{L1}:$ Regular, $\text{L2}:$ Context-free, $\text{L3}:$ Recursive, $\text{L4}:$ Recursively enumerable. Which of the following is/are $\text{TRUE}$ ? $\text{L3}' \cup \text{L4}$ is recursively ... and $\text{III}$ only $\text{I}$ and $\text{IV}$ only $\text{I, II}$ and $\text{III}$ only
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Theory of Computation
Apr 12, 2022
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nielit2022apr-scientistb
theory-of-computation
recursive-and-recursively-enumerable-languages
2
votes
1
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NIELIT 2022 April Scientist B | Section B | Question: 44
What is the time complexity of the following function? void myfun() { int a,b; for(a=1; a<=n; a++) for(b=1; b<=log(a); b++) printf(“My Function”); } $\theta (n)$ $\theta (n^2)$ $\theta (n\log n)$ $\theta (n^2(\log n))$
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Algorithms
Apr 12, 2022
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soujanyareddy13
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nielit2022apr-scientistb
algorithms
time-complexity
1
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0
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NIELIT 2022 April Scientist B | Section B | Question: 45
Consider a hard disk with $16$ recording surfaces $(0-15)$ having $16384$ cylinders $(0-16383)$ and each cylinder contains $64$ sectors $(0-63).$ Data storage capacity in each sector is $512$ bytes. Data are organized cylinder-wise and ... of the last sector of the file, if it is stored in a contiguous manner? $1281$ $1282$ $1283$ $1284$
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Apr 12, 2022
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nielit2022apr-scientistb
operating-system
disk
normal
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NIELIT 2022 April Scientist B | Section B | Question: 46
A sender uses the Stop-and-Wait $\text{ARQ}$ protocol for reliable transmission of frames. Frames are of size $1000 \; \text{bytes}$ and the transmission rate at the sender is $80 \; \text{Kbps (1 Kbps = 1000 bits/second)}.$ ... $\text{bytes/second}.$ $2500$ $2000$ $1500$ $500$
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Apr 12, 2022
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nielit2022apr-scientistb
computer-networks
stop-and-wait
normal
1
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1
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5
NIELIT 2022 April Scientist B | Section B | Question: 47
In a baseband communication link, frequencies upto $3500 \; \text{Hz}$ are used for signaling. Using a raised cosine pulse with $75 \%$ excess bandwidth and for no inter symbol interference, the maximum possible signaling rate is symbols $\text{per sec}$ is: $1750$ $2625$ $4000$ $5250$
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Digital Signal Processing
Apr 12, 2022
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soujanyareddy13
1.1k
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nielit2022apr-scientistb
non-gate
1
vote
1
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6
NIELIT 2022 April Scientist B | Section B | Question: 48
The particular solution of the recurrence relation $a_{r+2} – 4a_{r+1} + 4a_{r} = 2^{r}$ is: $r.2^{r}$ $r(r-1)2^{r-1}$ $r(r-1)2^{r-2}$ $r(r-1)2^{r-3}$
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Combinatory
Apr 12, 2022
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soujanyareddy13
1.1k
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nielit2022apr-scientistb
combinatory
recurrence-relation
2
votes
1
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7
NIELIT 2022 April Scientist B | Section B | Question: 49
Let $\text{R (A, B, C, D)}$ be a relational schema with the following functional dependencies: $\text{A} \rightarrow \text{B, B} \rightarrow \text{C}$ $\text{C} \rightarrow \text{D}$ ... dependency preserving does not give a lossless join, but is dependency preserving does not give a lossless join and is not dependency preserving
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Others
Apr 12, 2022
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soujanyareddy13
935
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nielit2022apr-scientistb
databases
database-normalization
lossless-join
1
vote
0
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8
NIELIT 2022 April Scientist B | Section B | Question: 50
Match the following: ... $\text{(I)}$ $\text{(II)}$ $\text{(III)}$ $\text{(IV)}$
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Others
Apr 12, 2022
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soujanyareddy13
875
views
nielit2022apr-scientistb
is&software-engineering
software-testing
normal
non-gate
1
vote
0
answers
9
NIELIT 2022 April Scientist B | Section B | Question: 51
Consider the directed graph shown in the figure below. There are multiple shortest paths between vertices $\text{S}$ and $\text{T}$. Which one will be reported by Dijkstra's shortest path algorithm? Assume that, in any iteration, the shortest path to ... to $\text{v}$ is discovered. $\text{SDT}$ $\text{SBDT}$ $\text{SACDT}$ $\text{SACET}$
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Apr 12, 2022
by
soujanyareddy13
757
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nielit2022apr-scientistb
1
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NIELIT 2022 April Scientist B | Section B | Question: 52
Consider the expression $(a-1) * (((b+c) / 3)) + d))$. Let $\text{X}$ be the minimum number of registers required by an optimal code generation (without any register spill) algorithm for a load/store architecture, in which only load ... can have only register or immediate operands. The value of $\text{X}$ is _____________ . $2$ $1$ $4$ $3$
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Others
Apr 12, 2022
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soujanyareddy13
534
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nielit2022apr-scientistb
1
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NIELIT 2022 April Scientist B | Section B | Question: 53
What is the appropriate pairing of items in the two columns listing various activities encountered in a software life cycle? ... $\text{(P) - (2), (Q) - (3), (R) - (4), (S) - (1)}$
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Others
Apr 12, 2022
by
soujanyareddy13
578
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nielit2022apr-scientistb
1
vote
1
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NIELIT 2022 April Scientist B | Section B | Question: 54
The relation scheme $\text{Student Performance (name, courseNo, rollNo, grade)}$ has the following functional dependencies: name, courseNo, $\rightarrow$ grade rollNo, courseNo $\rightarrow$ grade name $\rightarrow$ rollNo rollNo $\rightarrow$ name The ... form of this relation scheme is $\text{2NF}$ $\text{3NF}$ $\text{BCNF}$ $\text{4NF}$
soujanyareddy13
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Others
Apr 12, 2022
by
soujanyareddy13
803
views
nielit2022apr-scientistb
1
vote
1
answer
13
NIELIT 2022 April Scientist B | Section B | Question: 55
Flat top sampling of low pass signals __________ gives rise to aperture effect implies oversampling lead to aliasing introducing delay distortion
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Others
Apr 12, 2022
by
soujanyareddy13
680
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nielit2022apr-scientistb
1
vote
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14
NIELIT 2022 April Scientist B | Section B | Question: 56
Consider these two functions and two statements $\text{S1}$ and $\text{S2}$ about them. int work1(int *a, int i, int j) { int x = a[i+2]; a[j] = x+1; return a[i+2] - 3; } int work2(int *a, int i, int j) { int t1 = i+2; ... false and $\text{S2}$ is true $\text{S1}$ is true and $\text{S2}$ is false $\text{S1}$ is true and $\text{S2}$ is true
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Others
Apr 12, 2022
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soujanyareddy13
608
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nielit2022apr-scientistb
1
vote
1
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NIELIT 2022 April Scientist B | Section B | Question: 57
Consider the following two phase locking protocol. Suppose a transaction $\text{T}$ ... guarantee neither serializability nor deadlock-freedom guarantee serializability but not deadlock-freedom guarantee deadlock-freedom but not serializability.
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Others
Apr 12, 2022
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soujanyareddy13
657
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nielit2022apr-scientistb
1
vote
0
answers
16
NIELIT 2022 April Scientist B | Section B | Question: 58
Which of the following scenarios may lead to an irrecoverable error in a database system? A transaction writes a data item after it is read by an uncommitted transaction A transaction reads a data item after it is read ... is written by a committed transaction A transaction reads a data item after it is written by an uncommitted transaction
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Apr 12, 2022
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soujanyareddy13
478
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nielit2022apr-scientistb
1
vote
1
answer
17
NIELIT 2022 April Scientist B | Section B | Question: 59
Let $\text{T}$ be a binary search tree with $15$ nodes. The minimum and maximum possible heights of $\text{T}$ are: The height of a tree with a single node is $0$. $4$ and $15$ respectively $3$ and $14$ respectively $4$ and $14$ respectively $3$ and $15$ respectively
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Others
Apr 12, 2022
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soujanyareddy13
573
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nielit2022apr-scientistb
1
vote
0
answers
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NIELIT 2022 April Scientist B | Section B | Question: 60
For a bit-rate of $8 \; \text{kbps},$ the best possible values of the transmitted frequencies in a coherent binary $\text{FSK}$ system are : $16 \; \text{kHz}$ and $20 \; \text{kHz}$ $20 \; \text{kHz}$ and $32 \; \text{kHz}$ $20 \; \text{kHz}$ and $40 \; \text{kHz}$ $32 \; \text{kHz}$ and $40 \; \text{kHz}$
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Others
Apr 12, 2022
by
soujanyareddy13
496
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nielit2022apr-scientistb
1
vote
0
answers
19
NIELIT 2022 April Scientist B | Section B | Question: 61
Consider three processes, all arriving at time zero, with total execution time of $10, 20$ and $30\; \text{units,}$ respectively. Each process spends the first $20 \%$ of execution time doing $\text{I/O},$ the next $70 \%$ of time doing computation, and ... of time does the $\text{CPU}$ remain idle? $0 \%$ $10.6 \%$ $30.0 \%$ $89.4 \%$
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Others
Apr 12, 2022
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soujanyareddy13
471
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nielit2022apr-scientistb
1
vote
1
answer
20
NIELIT 2022 April Scientist B | Section B | Question: 62
The function $f(x) = x(x+3)e^{-{\frac{x}{2}}}$ satisfies all the conditions of Rolle’s theorem in $[-3,0].$ The value of $c$ is: $-3$ $-2$ $3$ $0$
soujanyareddy13
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Others
Apr 12, 2022
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soujanyareddy13
633
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nielit2022apr-scientistb
1
vote
0
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NIELIT 2022 April Scientist B | Section B | Question: 63
Host $\text{A}$ sends a $\text{UDP}$ datagram containing $8880 \; \text{bytes}$ of user data to host $\text{ B}$ over an Ethernet $\text{LAN}.$ Ethernet frames may carry data up to $1500 \; \text{bytes (i.e. MTU = 1500 bytes)}.$ ... the contents of offset field in the last fragment? $6$ and $925$ $6$ and $7400$ $7$ and $1110$ $7$ and $8880$
soujanyareddy13
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Others
Apr 12, 2022
by
soujanyareddy13
455
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nielit2022apr-scientistb
1
vote
1
answer
22
NIELIT 2022 April Scientist B | Section B | Question: 64
Which of the following statements about the parser is/are correct? Canonical $\text{LR}$ is more powerful than $\text{SLR}.$ $\text{SLR}$ is more powerful than $\text{LALR}.$ $\text{SLR}$ is more powerful than canonical $\text{LR}.$ $\text{(I)}$ only $\text{(II)}$ only $\text{(III)}$ only $\text{(II)}$ and $\text{(III)}$ only
soujanyareddy13
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Others
Apr 12, 2022
by
soujanyareddy13
836
views
nielit2022apr-scientistb
1
vote
2
answers
23
NIELIT 2022 April Scientist B | Section B | Question: 65
Let $\text{G}$ be a multiplicative group and $a \in \text{G.}$ If the order of $a$ is $6,$ then the order of $a^{5}$ is equal to : $1$ $5$ $6$ $30$
soujanyareddy13
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Others
Apr 12, 2022
by
soujanyareddy13
1.2k
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nielit2022apr-scientistb
group-theory
1
vote
0
answers
24
NIELIT 2022 April Scientist B | Section B | Question: 66
Given the relations employee (name, salary, deptno) and department (deptno, deptname, address) Which of the following queries cannot be expressed using the basic relational algebra operations $(\text{U, -, x, , , p})$? ... name is the same as their department name The sum of all employees' salaries All employees of a given department
soujanyareddy13
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Others
Apr 12, 2022
by
soujanyareddy13
458
views
nielit2022apr-scientistb
1
vote
2
answers
25
NIELIT 2022 April Scientist B | Section B | Question: 67
The first order logic statement $((\text{R} \vee \text{Q}) \wedge (\text{P} \; \vee \sim \text{Q}))$ ...
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Apr 12, 2022
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soujanyareddy13
704
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nielit2022apr-scientistb
1
vote
0
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26
NIELIT 2022 April Scientist B | Section B | Question: 68
Consider a disk pack with a seek time of $4 \; \text{milliseconds}$ and rotational speed of $10000$ rotations per minute $\text{(RPM)}.$ It has $600$ sectors per track and each sector can store $512 \; \text{bytes}$ of ... The total time $\text{(in milliseconds)}$ needed to read the entire file is __________ $14020$ $14000$ $25030$ $15000$
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Others
Apr 12, 2022
by
soujanyareddy13
446
views
nielit2022apr-scientistb
1
vote
1
answer
27
NIELIT 2022 April Scientist B | Section B | Question: 69
Consider the following Syntax Directed Translation Scheme $\text{(SDTS)}$, with non-terminals $\{ \text{S,A} \}$ and terminals $\{ \text{a,b} \}$. $\text{S} \rightarrow \text{aA} \quad \{\text{print }1\}$ ... the input $\text{aab}$ is: $1 \; 3 \; 2 $ $2 \; 2 \; 3 $ $2 \; 3 \; 1 $ Syntax Error
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Others
Apr 12, 2022
by
soujanyareddy13
589
views
nielit2022apr-scientistb
1
vote
0
answers
28
NIELIT 2022 April Scientist B | Section B | Question: 70
What does the following $\text{C}$-statement declare? int (*f) (int * ); A function that takes an integer pointer as argument and returns an integer. A function that takes an integer as argument and returns an ... pointer as argument and returns an integer. A function that takes an integer pointer as argument and returns a function pointer.
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Apr 12, 2022
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soujanyareddy13
389
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nielit2022apr-scientistb
2
votes
0
answers
29
NIELIT 2022 April Scientist B | Section B | Question: 71
Find out the maximum link speed at which a source can generate $1500-\text{byte TCP}$ payloads with packet lifetime of upto $120 \; \text{msec}$ before the $32-$bit sequence numbers wrap around? Take into account $\text{TCP, IPv4,}$ and Ethernet header ... $137 \; \text{Mbps}$ $256 \; \text{Mbps}$ $299 \; \text{Mbps}$ $512 \; \text{Mbps}$
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Apr 12, 2022
by
soujanyareddy13
886
views
nielit2022apr-scientistb
2
votes
2
answers
30
NIELIT 2022 April Scientist B | Section B | Question: 72
The Eigen values of a matrix $\text{A} = \begin{bmatrix} -2 & 2 & -3 \\ 2 & 1 & -6 \\ -1 & -2 & 0 \end{bmatrix}$ are $-3, -3$ and $5,$ then the trace of the matrix $A^{3} – 3A^{2}$ is: $200$ $71$ $-58$ $-200$
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Apr 12, 2022
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soujanyareddy13
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