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Recent questions tagged userisi2015
1
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1
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 a sum $S=s_{n−1}s_{n−2}...s_0.$ The outgoing carry generated at the most ... $\oplus$ denotes the Boolean XOR operation. You may use the Boolean identity: $X+Y=X⊕Y⊕(XY)$ to prove your result.
ankitgupta.1729
asked
in
Digital Logic
Mar 26, 2019
by
ankitgupta.1729
584
views
userisi2015
usermod
digital-logic
0
votes
0
answers
2
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 have $100,30,$ and $400$ tuples, respectively. The space requirements for different attributes ... execution of the join. For, (a), Order could be anything and min. cost =$100*30*400*$total size of all the attributes.
ankitgupta.1729
asked
in
Databases
Mar 26, 2019
by
ankitgupta.1729
540
views
userisi2015
usermod
databases
joins
0
votes
1
answer
3
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 $2032$ bytes including a $32$-byte header. The trans-mission lines in the network are error free and have a speed of $50$ ... answer as $1*3*(T_t+T_p) + \;31*T_t$ where $T_t=0.325\; ms$ and $T_p=3.333\; ms$. Please Confirm.
ankitgupta.1729
asked
in
Computer Networks
Mar 25, 2019
by
ankitgupta.1729
1.1k
views
userisi2015
usermod
computer-networks
ip-packet
network-layer
1
vote
1
answer
4
ISI MMA-2015
Let, $a_{n} \;=\; \left ( 1-\frac{1}{\sqrt{2}} \right ) ... \left ( 1- \frac{1}{\sqrt{n+1}} \right )$ , $n \geq 1$. Then $\lim_{n\rightarrow \infty } a_{n}$ (A) equals $1$ (B) does not exist (C) equals $\frac{1}{\sqrt{\pi }}$ (D) equals $0$
ankitgupta.1729
asked
in
Calculus
Feb 21, 2019
by
ankitgupta.1729
1.3k
views
engineering-mathematics
calculus
userisi2015
usermod
sequence-series
limits
2
votes
1
answer
5
ISI MMA-2015
If two real polynomials $f(x)$ and $g(x)$ of degrees $m\;(\geq2)$ and $n\;(\geq1)$ respectively, satisfy $f(x^{2}+1) = f(x)g(x)$ $,$ for every $x\in \mathbb{R}$ , then (A) $f$ has exactly one real root $x_{0}$ such that $f'(x_{0}) \neq 0$ (B) $f$ has exactly one real root $x_{0}$ such that $f'(x_{0}) = 0$ (C) $f$ has $m$ distinct real roots (D) $f$ has no real root.
ankitgupta.1729
asked
in
Calculus
Feb 20, 2019
by
ankitgupta.1729
1.2k
views
engineering-mathematics
calculus
userisi2015
usermod
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