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Recent questions tagged gateit-2007
42
votes
5
answers
1
GATE IT 2007 | Question: 85
Consider the $B^{+}$ tree in the adjoining figure, where each node has at most two keys and three links. Keys $K15$ and then $K25$ are inserted into this tree in that order. Now the key $K50$ is deleted from the $B^+$ tree resulting after the two ... (i) and (ii) are true Statements (ii) and (iii) are true Statements (iii) and (i) are true All the statements are false
Ishrat Jahan
asked
in
Databases
Oct 31, 2014
by
Ishrat Jahan
10.2k
views
gateit-2007
databases
b-tree
normal
39
votes
5
answers
2
GATE IT 2007 | Question: 84
Consider the $B^+$ tree in the adjoining figure, where each node has at most two keys and three links. Keys $K15$ and then $K25$ are inserted into this tree in that order. Exactly how many of the following nodes (disregarding the links) will be present in the tree after the two insertions? $1$ $2$ $3$ $4$
Ishrat Jahan
asked
in
Databases
Oct 31, 2014
by
Ishrat Jahan
12.9k
views
gateit-2007
databases
b-tree
normal
85
votes
15
answers
3
GATE IT 2007 | Question: 83
The head of a hard disk serves requests following the shortest seek time first (SSTF) policy. What is the maximum cardinality of the request set, so that the head changes its direction after servicing every request if the total number of tracks are $2048$ and the head can start from any track? $9$ $10$ $11$ $12$
Ishrat Jahan
asked
in
Operating System
Oct 31, 2014
by
Ishrat Jahan
17.3k
views
gateit-2007
operating-system
disk-scheduling
normal
29
votes
1
answer
4
GATE IT 2007 | Question: 82
The head of a hard disk serves requests following the shortest seek time first $\textsf{(SSTF)}$ policy. The head is initially positioned at track number $180$. Which of the request sets will cause the head to change its direction after servicing every request assuming that the head ... $10, 139, 169, 178, 181, 184, 201, 265$ $10, 138, 170, 178, 181, 185, 200, 265$
Ishrat Jahan
asked
in
Operating System
Oct 31, 2014
by
Ishrat Jahan
4.2k
views
gateit-2007
operating-system
disk-scheduling
normal
35
votes
6
answers
5
GATE IT 2007 | Question: 81
Let $P_1, P_2,\dots , P_n $be $n$ points in the $xy$-plane such that no three of them are collinear. For every pair of points $P_i$ and $P_j$, let $L_{ij}$ be the line passing through them. Let $L_{ab}$ ... $\Theta\left(n\right)$ $\Theta\left(n\log n\right)$ $\Theta\left(n\log^2 n\right)$ $\Theta\left(n^2\right)$
Ishrat Jahan
asked
in
Algorithms
Oct 31, 2014
by
Ishrat Jahan
4.4k
views
gateit-2007
algorithms
time-complexity
normal
19
votes
7
answers
6
GATE IT 2007 | Question: 80
Let $P_{1},P_{2},\ldots,P_{n}$ be $n$ points in the $xy-$plane such that no three of them are collinear. For every pair of points $P_{i}$ and $P_{j}$, let $L_{ij}$ be the line passing through them. Let $L_{ab}$ be the line ... or the smallest $y$-coordinate among all the points The difference between $x$-coordinates $P_{a}$ and $P_{b}$ is minimum None of the above
Ishrat Jahan
asked
in
Linear Algebra
Oct 31, 2014
by
Ishrat Jahan
3.3k
views
gateit-2007
cartesian-coordinates
28
votes
3
answers
7
GATE IT 2007 | Question: 79
Consider the following expression $a\bar d + \bar a \bar c + b\bar cd$ Which of the following expressions does not correspond to the Karnaugh Map obtained for the given expression? $\bar c \bar d+ a\bar d + ab\bar c + \bar a \bar cd$ ... $\bar b\bar c \bar d + ac\bar d + \bar a \bar c + ab\bar c$
Ishrat Jahan
asked
in
Digital Logic
Oct 31, 2014
by
Ishrat Jahan
3.9k
views
gateit-2007
digital-logic
k-map
normal
27
votes
3
answers
8
GATE IT 2007 | Question: 78
Consider the following expression $a\bar d + \bar a\bar c + b\bar cd$ Which of the following Karnaugh Maps correctly represents the expression?
Ishrat Jahan
asked
in
Digital Logic
Oct 31, 2014
by
Ishrat Jahan
3.5k
views
gateit-2007
digital-logic
k-map
normal
4
votes
1
answer
9
GATE IT 2007 | Question: 77
Consider the sequence $\left \langle x_n \right \rangle,\; n \geq 0$ defined by the recurrence relation $x_{n + 1} = c \cdot (x_n)^2 - 2$, where $c > 0$. For which of the following values of $c$, does there exist a non-empty open interval $(a, b)$ such that the ... $0.25$ $0.35$ $0.45$ $0.5$ i only i and ii only i, ii and iii only i, ii, iii and iv
Ishrat Jahan
asked
in
Numerical Methods
Oct 31, 2014
by
Ishrat Jahan
1.1k
views
gateit-2007
numerical-methods
normal
non-gate
21
votes
4
answers
10
GATE IT 2007 | Question: 76
Consider the sequence $\langle x_n \rangle , \: n \geq 0$ defined by the recurrence relation $x_{n+1} = c . x^2_n -2$, where $c > 0$. Suppose there exists a non-empty, open interval $(a, b)$ such that for all $x_0$ satisfying $a < x_0 < b$, the ... sequence converges to the value? $\frac{1+\sqrt{1+8c}}{2c}$ $\frac{1-\sqrt{1+8c}}{2c}$ $2$ $\frac{2}{2c-1}$
Ishrat Jahan
asked
in
Combinatory
Oct 31, 2014
by
Ishrat Jahan
3.9k
views
gateit-2007
combinatory
normal
recurrence-relation
0
votes
2
answers
11
GATE IT 2007 | Question: 75
Consider a token ring topology with N stations (numbered 1 to N) running token ring protocol where the stations are equally spaced. When a station gets the token it is allowed to send one frame of fixed size. Ring latency is tp, while the transmission time of a frame is tt. ... utilization of the token ring when tt = 5 ms, tp = 3 ms, N = 15 is: 0.545 0.655 0.9375 0.961
Ishrat Jahan
asked
in
Computer Networks
Oct 31, 2014
by
Ishrat Jahan
1.4k
views
gateit-2007
computer-networks
token-ring
normal
out-of-syllabus-now
1
vote
2
answers
12
GATE IT 2007 | Question: 74
Consider a token ring topology with N stations (numbered 1 to N) running token ring protocol where the stations are equally spaced. When a station gets the token it is allowed to send one frame of fixed size. Ring latency is tp, while the transmission time of a frame is tt. ... utilization of the token ring when tt =3 ms, tp = 5 ms, N = 10 is 0.545 0.6 0.857 0.961
Ishrat Jahan
asked
in
Computer Networks
Oct 31, 2014
by
Ishrat Jahan
2.6k
views
gateit-2007
computer-networks
token-ring
normal
out-of-syllabus-now
36
votes
8
answers
13
GATE IT 2007 | Question: 73
Consider the regular expression $R = (a + b)^* \ (aa + bb) \ (a + b)^*$ Which one of the regular expressions given below defines the same language as defined by the regular expression $R$ ? $(a(ba)^* + b(ab)^*)(a + b)^+$ $(a(ba)^* + b(ab)^*)^*(a + b)^*$ $(a(ba)^* (a + bb) + b(ab)^*(b + aa))(a + b)^*$ $(a(ba)^* (a + bb) + b(ab)^*(b + aa))(a + b)^+$
Ishrat Jahan
asked
in
Theory of Computation
Oct 31, 2014
by
Ishrat Jahan
11.5k
views
gateit-2007
theory-of-computation
regular-expression
normal
39
votes
7
answers
14
GATE IT 2007 | Question: 72
Consider the regular expression $R = (a + b)^* (aa + bb) (a + b)^*$ Which deterministic finite automaton accepts the language represented by the regular expression $R$?
Ishrat Jahan
asked
in
Theory of Computation
Oct 31, 2014
by
Ishrat Jahan
5.9k
views
gateit-2007
theory-of-computation
finite-automata
normal
43
votes
3
answers
15
GATE IT 2007 | Question: 71
Consider the regular expression $R = (a + b)^* (aa + bb) (a + b)^*$ Which of the following non-deterministic finite automata recognizes the language defined by the regular expression $R$? Edges labeled $\lambda $ denote transitions on the empty string.
Ishrat Jahan
asked
in
Theory of Computation
Oct 31, 2014
by
Ishrat Jahan
6.3k
views
gateit-2007
theory-of-computation
finite-automata
normal
27
votes
3
answers
16
GATE IT 2007 | Question: 70
You are given the following four bytes : $\begin{array}{| c | c | c | c |} \hline 10100011 & 00110111 & 11101001 & 10101011 \\\hline \end{array}$ Which of the following are substrings of the base $64$ encoding of the above four bytes? $\text{zdp}$ $\text{fpq}$ $\text{qwA}$ $\text{oze}$
Ishrat Jahan
asked
in
Computer Networks
Oct 30, 2014
by
Ishrat Jahan
9.9k
views
gateit-2007
computer-networks
network-security
normal
out-of-gate-syllabus
30
votes
3
answers
17
GATE IT 2007 | Question: 69
Consider the following clauses: Not inherently suitable for client authentication. Not a state sensitive protocol. Must be operated with more than one server. Suitable for structured message organization. May need two ports on the serve side for proper operation. The option that has the ... -i; SMTP-ii; DNS-iii; IMAP-iv; HTTP-v SMTP-i; HTTP-ii; IMAP-iii; DNS-iv; FTP-v
Ishrat Jahan
asked
in
Computer Networks
Oct 30, 2014
by
Ishrat Jahan
4.8k
views
gateit-2007
computer-networks
network-protocols
normal
53
votes
4
answers
18
GATE IT 2007 | Question: 68
Consider the following relation schemas : b-Schema = (b-name, b-city, assets) a-Schema = (a-num, b-name, bal) d-Schema = (c-name, a-number) Let branch, account and depositor be respectively instances of the above schemas. Assume that account and ... depositor) Пc-name (σb-city = "Agra" branch ⋈ (σb-city = "Agra" ⋀ bal < 0 account ⋈ depositor))
Ishrat Jahan
asked
in
Databases
Oct 30, 2014
by
Ishrat Jahan
9.3k
views
gateit-2007
databases
joins
relational-algebra
normal
43
votes
3
answers
19
GATE IT 2007 | Question: 67
Consider the following implications relating to functional and multivalued dependencies given below, which may or may not be correct. if $A \rightarrow \rightarrow B$ and $A \rightarrow \rightarrow C$ then $A \rightarrow BC$ if $A \rightarrow B$ ... then $A \rightarrow \rightarrow C$ Exactly how many of the above implications are valid? $0$ $1$ $2$ $3$
Ishrat Jahan
asked
in
Databases
Oct 30, 2014
by
Ishrat Jahan
9.5k
views
gateit-2007
databases
database-normalization
multivalued-dependency-4nf
normal
47
votes
5
answers
20
GATE IT 2007 | Question: 66
Consider the following two transactions$: T1$ and $T2.$ ...
Ishrat Jahan
asked
in
Databases
Oct 30, 2014
by
Ishrat Jahan
13.4k
views
gateit-2007
databases
transaction-and-concurrency
normal
37
votes
4
answers
21
GATE IT 2007 | Question: 65
Consider a selection of the form $\sigma_{A\leq 100} (r)$, where $r$ is a relation with $1000$ tuples. Assume that the attribute values for $A$ among the tuples are uniformly distributed in the interval $[0, 500].$ Which one of the following options is the best estimate of the number of tuples returned by the given selection query ? $50$ $100$ $150$ $200$
Ishrat Jahan
asked
in
Databases
Oct 30, 2014
by
Ishrat Jahan
8.9k
views
gateit-2007
databases
relational-calculus
probability
normal
45
votes
6
answers
22
GATE IT 2007 | Question: 64
A broadcast channel has $10$ nodes and total capacity of $10$ Mbps. It uses polling for medium access. Once a node finishes transmission, there is a polling delay of $80$ μs to poll the next node. Whenever a node is polled, it is allowed to transmit a maximum of $1000$ bytes. The maximum throughput of the broadcast channel is: $1$ Mbps $100/11$ Mbps $10$ Mbps $100$ Mbps
Ishrat Jahan
asked
in
Computer Networks
Oct 30, 2014
by
Ishrat Jahan
7.7k
views
gateit-2007
computer-networks
communication
normal
55
votes
8
answers
23
GATE IT 2007 | Question: 63
A group of $15$ routers is interconnected in a centralized complete binary tree with a router at each tree node. Router $i$ communicates with router $j$ by sending a message to the root of the tree. The root then sends the message back down to router $j$ ... mean number of hops per message, assuming all possible router pairs are equally likely is $3$ $4.26$ $4.53$ $5.26$
Ishrat Jahan
asked
in
Computer Networks
Oct 30, 2014
by
Ishrat Jahan
14.5k
views
gateit-2007
computer-networks
routing
binary-tree
normal
51
votes
3
answers
24
GATE IT 2007 | Question: 62
Let us consider a statistical time division multiplexing of packets. The number of sources is $10$. In a time unit, a source transmits a packet of $1000$ bits. The number of sources sending data for the first $20$ ... unit. Then the average number of backlogged of packets per time unit during the given period is $5$ $4.45$ $3.45$ $0$
Ishrat Jahan
asked
in
Computer Networks
Oct 30, 2014
by
Ishrat Jahan
9.4k
views
gateit-2007
computer-networks
communication
normal
38
votes
6
answers
25
GATE IT 2007 | Question: 61
In the waveform (a) given below, a bit stream is encoded by Manchester encoding scheme. The same bit stream is encoded in a different coding scheme in wave form (b). The bit stream and the ... Manchester respectively $0111101000$ and Differential Manchester respectively $1000010111$ and Integral Manchester respectively $0111101000$ and Integral Manchester respectively
Ishrat Jahan
asked
in
Computer Networks
Oct 30, 2014
by
Ishrat Jahan
13.8k
views
gateit-2007
computer-networks
communication
manchester-encoding
normal
out-of-gate-syllabus
34
votes
4
answers
26
GATE IT 2007 | Question: 60
For the network given in the figure below, the routing tables of the four nodes $A$, $E$, $D$ and $G$ are shown. Suppose that $F$ has estimated its delay to its neighbors, $A$, $E$, $D$ and $G$ as $8$, $10$, $12$ and $6$ msecs respectively and updates its ...
Ishrat Jahan
asked
in
Computer Networks
Oct 30, 2014
by
Ishrat Jahan
6.9k
views
gateit-2007
computer-networks
distance-vector-routing
normal
0
votes
1
answer
27
GATE IT 2007 | Question: 59
The contents of the text file t1 txt containing four lines are as follows : a1 b1 a2 b2 a3 b2 a4 b1 The contents of the text file t2 txt containing five lines are as follows : a1 c1 a2 c2 a3 c3 a4 c3 a5 c4 Consider the following Bourne ... that the given strings may be substrings of a printed line.) "b1 c1" "b2 c3" "b1 c2" "b1 c3"
Ishrat Jahan
asked
in
Operating System
Oct 30, 2014
by
Ishrat Jahan
1.0k
views
gateit-2007
out-of-syllabus-now
shell-script
normal
65
votes
4
answers
28
GATE IT 2007 | Question: 58
A demand paging system takes $100$ time units to service a page fault and $300$ time units to replace a dirty page. Memory access time is $1$ time unit. The probability of a page fault is $p$ ... that the average access time is $3$ time units. Then the value of $p$ is $0.194$ $0.233$ $0.514$ $0.981$
Ishrat Jahan
asked
in
Operating System
Oct 30, 2014
by
Ishrat Jahan
16.5k
views
gateit-2007
operating-system
page-replacement
probability
normal
35
votes
1
answer
29
GATE IT 2007 | Question: 57
In a multi-user operating system on an average, $20$ requests are made to use a particular resource per hour. The arrival of requests follows a Poisson distribution. The probability that either one, three or five requests are made in $45$ ... $6.9 \times 10^3 \times e^{-20}$ $1.02 \times 10^3 \times e^{-20}$
Ishrat Jahan
asked
in
Probability
Oct 30, 2014
by
Ishrat Jahan
6.5k
views
gateit-2007
probability
poisson-distribution
normal
31
votes
4
answers
30
GATE IT 2007 | Question: 56
Synchronization in the classical readers and writers problem can be achieved through use of semaphores. In the following incomplete code for readers-writers problem, two binary semaphores mutex and wrt are used to obtain synchronization wait (wrt) writing is performed signal ... mutex), wait (mutex), signal (wrt) signal (mutex), wait (mutex), signal (mutex), wait (mutex)
Ishrat Jahan
asked
in
Operating System
Oct 30, 2014
by
Ishrat Jahan
7.4k
views
gateit-2007
operating-system
process-synchronization
normal
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