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1
X AND Y is an arbitrary sets, F: $X\rightarrow Y$ show that a and b are equivalent F is one-one For all set Z and function g1: $Z\rightarrow X$ and g2: $Z\rightarrow X$, if $g1 \neq g2$ implies $f \bigcirc g1 \neq f \bigcirc g2$ Where $\bigcirc$ is a fucntion composition.
answered Mar 12 in Set Theory & Algebra 230 views
3 answers
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Given that $B(a)$ means “$a$ is a bear” $F(a)$ means “$a$ is a fish” and $E(a,b)$ means “$a $ eats $b$” Then what is the best meaning of $\forall x [F(x) \to \forall y(E(y,x)\rightarrow b(y))]$ Every fish is eaten by some bear Bears eat only fish Every bear eats fish Only bears eat fish
commented Jan 26 in Mathematical Logic 537 views
2 answers
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Avalanche effect in cryptography refers Large changes in cipher text when the keyword is changed minimally Large changes in cipher text when the plain text is changed Large Impact of keyword change to length of the cipher text None of the above
commented Jan 24 in Computer Networks 400 views
4 answers
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Consider a DFA over $\Sigma=\{a,b\}$ accepting all strings which have number of a's divisible by $6$ and number of $b$'s divisible by $8$. What is the minimum number of states that the DFA will have? $8$ $14$ $15$ $48$
commented Jan 23 in Theory of Computation 7k views
13 answers
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If every non-key attribute functionally dependent on the primary key, then the relation will be in First normal form Second normal form Third normal form Fourth Normal form
answered Jan 21 in Databases 1.4k views
4 answers
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Remote Procedure Calls are used for communication between two processes remotely different from each other on the same system communication between two processes on the same system communication between two processes on the separate systems none of the above
commented Jan 20 in Computer Networks 409 views
6 answers
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The roots of $ax^{2}+bx+c = 0$ are real and positive. $a, b$ and $c$ are real. Then $ax^{2}+b\mid x \mid + c =0$ has no roots $2$ real roots $3$ real roots $4$ real roots
commented Jan 20 in Numerical Ability 3.8k views
4 answers
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A IP packet has arrived in which the fragmentation offset value is 100,the value of HLEN is 5 and the value of total length field is 200. What is the number of the last byte? 194 394 979 1179
commented Jan 3 in Computer Networks 5.1k views
2 answers
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An aggregation association is drawn using which symbol? A line which loops back on to the same table A small open diamond at the end of a line connecting two tables A small closed diamond at the end of a line connecting two tables A small closed triangle at the end of a line connecting two tables
commented Jan 3 in Databases 3.3k views
2 answers
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Consider the following pseudo- code while (m<n) if (x>y ) and (a<b) then a=a+1 y=y-1 end if m=m+1 end while What is cyclomatic complexity of the above pseudo -code? 2 3 4 5
commented Jan 3 in IS&Software Engineering 4.4k views
2 answers
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Calculate the order of leaf ($P_{leaf}$) and non leaf (P) nodes of a $B^{+}$ tree based on the information given below. Search key field = $12$ field Record pointer = $10$ bytes Block pointer = $8$ bytes Block size = $1$KB $P_{leaf}$ = 51 & p = 46 $P_{leaf}$ = 47 & p = 52 $P_{leaf}$ = 46 & p = 51 $P_{leaf}$ = 52 & p = 47
commented Jan 2 in Databases 3.6k views
5 answers
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When two $\text{BCD}$ numbers $0\times14$ and $0\times08$ are added what is the binary representation of the resultant number ? $0\times22$ $0\times1c$ $0\times16$ results in overflow
commented Jan 2 in Digital Logic 4.1k views
5 answers
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How many check bits are required for $16$ bit data word to detect $2$ bit errors and single bit correction using hamming code? $5$ $6$ $7$ $8$
commented Jan 2 in Computer Networks 5.3k views
1 answer
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In _____ allocation method for disk block allocation in a file system, insertion and deletion of blocks in a file is easy Index Linked Contiguous Bit Map
commented Dec 31, 2019 in Operating System 1.3k views
2 answers
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Which of the following are NOT shared by the threads of the same process? Stack Registers Address space Message queue a and d b and c a and b a, b and c
commented Dec 31, 2019 in Operating System 374 views
10 answers
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Semaphores are used to solve the problem of Race Condition Process Synchronization Mutual Exclusion None of the above I and II II and III All of the above None of the above
commented Dec 31, 2019 in Operating System 10.7k views
1 answer
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commented Dec 17, 2019 in CO and Architecture 98 views
3 answers
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An even function $f(x)$ has left derivative $5$ at $x=0$. Then the right derivative of $f(x)$ at $x=0$ need not exist the right derivative of $f(x)$ at $x=0$ exists and is equal to $5$ the right derivative of $f(x)$ at $x=0$ exists and is equal to $-5$ none of the above is necessarily true
commented Dec 1, 2019 in Calculus 585 views
1 answer
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What is the main reason for RACE condition while synchronzing the process? A)The two processes trying to update the variable at same time. B) More than one process entering into the critical section at same time. C)Mutual Exclusion condition not satisfies. D)All of the above
commented Nov 30, 2019 in Operating System 158 views
4 answers
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Networks that use different technologies can be connected by using Packets Switches Bridges Routers
commented Nov 30, 2019 in Computer Networks 2.3k views
2 answers
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An algorithm is made up of $2$ modules $M_{1}$ and $M_{2}$ . If time complexity of modules $M_{1}$ and $M_{2}$ are $h(n)$ and $g(n)$ respectively, the time complexity of the algorithm is $\min (h(n), g(n))$ $\max (h(n), g(n))$ $h(n) + g(n)$ $h(n) * g(n)$
commented Nov 29, 2019 in Algorithms 507 views
1 answer
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Which of the following statement(s) is (are) not correct ? i. The $2$&rsquo;s complement of $0$ is $0$. ii. In $2$&rsquo;s complement, the left most bit cannot be used to express a quantity. iii. For an $n$-bit word ($2$&rsquo;s complement) which includes the sign bit, ... contained in the $1$&rsquo;s of positive numbers and $0$&rsquo;s of the negative numbers. $i$ & $iv$ $i$ & $ii$ $iii$ $iv$
commented Nov 29, 2019 in Digital Logic 1.5k views
7 answers
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1)The number of min heap trees are possible with 15 elements such that every leaf node must be greater than all non-leaf nodes of the tree are ________. -------------------------------------------------------------------------------------------------------------------------- 2)The number of min heap trees are possible with 15 elements_________________
commented Nov 27, 2019 in Programming 1.8k views
5 answers
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What is the output of the following C code? Assume that the address of $x$ is $2000$ (in decimal) and an integer requires four bytes of memory. int main () { unsigned int x [4] [3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}, {10, 11, 12}}; printf ("%u, %u, %u", x + 3, *(x + 3), *(x + 2) + 3); } $2036, 2036, 2036$ $2012, 4, 2204$ $2036, 10, 10$ $2012, 4, 6$
commented Nov 26, 2019 in Programming 10.1k views
1 answer
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Let a schedule be Strict Recoverable then it will suffer from which problem? a) ww problem b) rw problem c)wr problem d) Lost update problem
commented Nov 23, 2019 in Databases 285 views
2 answers
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Consider the following grammar for arithmetic expressions using binary operators $-$ and $/$ which are not associative $E \rightarrow E -T\mid T$ $T \rightarrow T/F\mid F$ $F \rightarrow (E) \mid id$ ($E$ is the start symbol) Is the grammar unambiguous? Is so, what is the relative precedence between $-$ and $/$? If not, give an unambiguous grammar that gives $/$ precedence over $-$.
commented Nov 23, 2019 in Compiler Design 1.7k views
3 answers
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Consider a system employing interrupt driven input/output for a particular device that transfers data at an average of 16 KB/s on a continuous basis. Assume that interrupt processing takes 50 μsec (i.e., the jump to the interrupt service routine (ISR), execute ... fraction of processor time is consumed by this input/output device if it interrupt for every byte is _______ (Upto 3 decimal places).
commented Nov 22, 2019 in CO and Architecture 2.2k views
2 answers
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Consider a system, that uses Interrupt Driven I/O for a particular device which has a data transfer rate of 10 KBPS . The processing of the interrupt ( Jump, Execute and Return to the main program ) takes 250 us . What percentage of CPU time is consumed by I/O device , if I/O device interrupts for every 2 bytes ?
commented Nov 22, 2019 in CO and Architecture 1.3k views
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