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This is the random variable topic from GATE free classes of Go Classes. I have a doubt in this question. The instructor here says the statement is true because of the property of the function that each value of x(domain) can only and only have one image(value) in the codomain, so the values mapped from two events to a and b, they must be unique. But what if events are mapped in such a way that X = 2 and the other is X = 2 * k where k is an integer >= 1. Now When k = 1 both events are equal so, the statement is false. So shouldn't it be written explicitly in the statement, that both mapped values must be different from each other?
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84
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Tcp congestion control
The initial value of ssthresh is set to arbitarily high value; so sender can keep on increasing its cwnd, But wont that clash with the rwnd eventually ?So is it correct ...
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74
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graph theory
Maximum number of edges in a simple graph G on n vertices and no even cycleis:
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195
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getting-all-possible-down-and-right-edge-paths-in-a-n-x-n-grid-of-points-or-lattice-of-points
An $n \times n$ grid of points (vertices) is given. Starting from the top-left point of the grid, a person can move only one step to the right or one step downward along ...
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2 2 votes
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88
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Operating System Self doubt
Which of the following actions by a running process will always result in a context switch of the running process, even in a non-preemptive kernel design?(a) Servicing a ...
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Unique weighted code for decimal digit
For weighted decimal codes, is it guarantted for a decimal digit to have a unqiue code or representation in binary? If the weights assigned to places can be arbitrary, is...
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113
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#er model
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571
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algorithm
Which of the following statements is/are correct?A.Merge sort always has more number of swaps that comparisonsNumber of comparisons in partition algorithm are same for be...
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127
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since the processor is involved only at the beginning and at the end for the burst mode so I thought there would be no change. but I got it wrong please state youre reason , and correct me If I am wrong
Suppose a system is transferring a large file using DMA. If we double the block size of each transfer (e.g., from $10\text{ KB}$ blocks to $20\text{ KB}$ blocks) but keep...
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1 1 vote
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183
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transport layer and network layer .
True /False -Transport layer protocols like TCP, UDP and Network layer protocol like IP, ICMP, RARP can be distinguished by protocol field of IP protocol.
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155
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what is the mistake here
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123
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self
How to prepare aptitude
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277
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GATE CS Practice : The "Dirty Bit" Avalanche (COA)
A system has a 2-level cache (L1, L2) and Main memory.L1 Hit Time: 1 nsL2 Hit Time: 10 nsMain Memory Access Time: 100 nsL1 Hit Rate: 90%L2 Hit Rate: (Global) 95% (Wait! I...
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306
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UGC NET CSE|December 2023
The selection of Spiral Model based on characteristics of requirements :(A) requirements easily understandable and defined ?(B) Can we define requirements early in the cy...
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1 1 vote
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452
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ISRO 2016 : Technical Assistant(Computer Science)
The master list of an indexed fileA. is sorted in ascending orderB. contains only a list of keys and record numbersC. has a number assigned to each recordD. both (b) and ...
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1 1 vote
0 0 answers
393
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UGC NET CSE
Given as 4 GB (4.3X10^9 bytes) of virtual space and typical page size of 4KB and each page table entry is 5 bytes. How many virtual pages would this imply? What is the si...
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1.7k
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#OS-FORK Output
Q23. The following C program is executed on a Unix/Linux system: main(){ int i=0; while (i<20) if (i%2==0) fork(); ...
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655
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Pyq
If a square matrix of order 100 has exactly 15 distinct eigen values, the degree of the minimal polynomial is (a) At least 15 (c) Always 15 (b) At most 15 (d) Exactly 100
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1 1 vote
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872
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ISRO cs 2020
Given R(ABCD) FD's={A->C,B->D}. Is this in 3NF?If NO why?
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674
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TIFR
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12 12 votes
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GATE-2014 EC
Which one of the following statements is NOT true for a square matrix A?If A is real symmetric, the eigen values of A are the diagonal elements of it.If all the principal...
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4.2k
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Gray Code (Self Doubt)
Was solving the GO 2019 pdf when I encountered this question asked in TIFR 2017. Although I have understood this question, I have one doubt-It is mentioned in the questio...
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Gate 2002 - ME
Which of the following functions is not differentiable in the domain $[-1,1]$ ?(a) $f(x) = x^2$(b) $f(x) = x-1$(c) $f(x) = 2$(d) $f(x) = Maximum (x,-x)$
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830
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ISI 2018 PCB C5
Consider a max-heap of n distinct integers, n ≥ 4, stored in an array A[1 . . . n]. The second minimum of A is the integer that is less than all integers in A except the ...
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ISI 2018 PCB C4
Let the valid moves along a staircase be U (one step up) and D (one step down). For example, the string s = UUDU represents the sequence of moves as two steps up, then on...
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ISI-PCB-2015-C8-a
Let $a_{n−1}a_{n−2}...a_0$ and $b_{n−1}b_{n−2}...b_0$ denote the $2’s$ complement representation of two integers $A$ and $B$ respectively. Addition of $A$ and $B$ yields ...
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ISI-PCB-2015-C5
Consider three relations $R_1(\underline{X},Y,Z), R_2(\underline{M},N,P),$ and $R_3(\underline{N,X})$. The primary keys of the relations are underlined. The relations hav...
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ISI-PCB-2015-C1-b
A $64000$-byte message is to be transmitted over a $2$-hop path in a store-and-forward packet-switching network. The network limits packets toa maximum size of $2032$ byt...
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1 1 vote
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767
767 views
gate2019
In the dld 1 mark ques on prob,it was mentioned that we need to select pairs whose MSB same and they must be( Unsigned ) from 1 to 13.Is that doesn’t means we have to ...
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M.Tech(CS) in University of Hyderabad and IIT(ISM) Dhanbad.
Hi All,My GATE 2019 Score is 467, Marks: 40 and Rank is: 6124. I belong to OBC(Non-Creamy Layer).I have a probability of getting M.Tech(CS-IS) at IIT(ISM) Dhanbad and M.T...
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