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ISRO 2015 Computer Science Questions with Solution

Recent questions tagged isro2015

17 votes
2 answers
1
Consider the following code fragment void foo(int x, int y) { x+=y; y+=x; } main() { int x=5.5; foo(x,x); } What is the final value of x in both call by value and call by reference, respectively? 5 and 16 5 and 12 5 and 20 12 and 20
asked Jun 21, 2016 in Compiler Design jothee 4k views
8 votes
5 answers
2
The for loop for (i=0; i<10; ++i) printf("%d", i&1); prints 0101010101 0111111111 0000000000 1111111111
asked Jun 21, 2016 in Programming jothee 3.5k views
10 votes
4 answers
3
The output of the following program is main() { static int x[] = {1,2,3,4,5,6,7,8} int i; for (i=2; i<6; ++i) x[x[i]]=x[i]; for (i=0; i<8; ++i) printf("%d", x[i]); } 1 2 3 3 5 5 7 8 1 2 3 4 5 6 7 8 8 7 6 5 4 3 2 1 1 2 3 5 4 6 7 8
asked Jun 21, 2016 in Programming jothee 3.6k views
6 votes
3 answers
4
Consider the following program fragment i=6720; j=4; while (i%j)==0 { i=i/j; j=j+1; } On termination j will have the value 4 8 9 6720
asked Jun 21, 2016 in Programming jothee 3.1k views
7 votes
3 answers
5
The following program main() { inc(); inc(); inc(); } inc() { static int x; printf("%d", ++x); } prints 012 prints 123 prints 3 consecutive, but unpredictable numbers prints 111
asked Jun 21, 2016 in Programming jothee 3.3k views
4 votes
1 answer
6
Consider an uncompressed stereo audio signal of CD quality which is sampled at 44.1 kHz and quantized using 16 bits. What is required storage space if a compression ratio of 0.5 is achieved for 10 seconds of this audio? 172 KB 430 KB 860 KB 1720 KB
asked Jun 21, 2016 in Multimedia jothee 3.4k views
4 votes
3 answers
7
Which of the following is not an image type used in MPEG? A frame B frame D frame P frame
asked Jun 21, 2016 in Digital Image Processing jothee 3k views
4 votes
1 answer
8
Which of the following compression algorithms is used to generate a .png file? LZ78 Deflate LZW Huffman
asked Jun 20, 2016 in Digital Image Processing jothee 2.9k views
3 votes
2 answers
9
If in a software project the number of user input, user output, enquiries, files and external interfaces are (15, 50, 24, 12, 8), respectively, with complexity average weighing factor. The productivity if effort = 70 percent-month is 110.54 408.74 304.78 220.14
asked Jun 20, 2016 in IS&Software Engineering jothee 5.4k views
7 votes
2 answers
10
Alpha and Beta testing are forms of Acceptance testing Integration testing System testing Unit testing
asked Jun 20, 2016 in IS&Software Engineering jothee 3.1k views
16 votes
5 answers
11
Which layers of the OSI reference model are host-to-host layers? Transport, session, presentation, application Session, presentation, application Datalink, transport, presentation, application Physical, datalink, network, transport
asked Jun 20, 2016 in Computer Networks jothee 5.7k views
5 votes
4 answers
12
Which statement is false? PING is a TCP/IP application that sends datagrams once every second in the hope of an echo response from the machine being PINGED If the machine is connected and running a TCP/IP protocol stack, it should respond to the PING datagram ... condition, an ICMP message is not returned PING display the time of the return response in milliseconds or one of several error message
asked Jun 20, 2016 in Computer Networks jothee 2.7k views
7 votes
2 answers
13
In a class B subnet, we know the IP address of one host and the mask as given below: IP address: 125.134.112.66 Mask: 255.255.224.0 What is the first address(Network address)? 125.134.96.0 125.134.112.0 125.134.112.66 125.134.0.0
asked Jun 19, 2016 in Computer Networks jothee 3.5k views
10 votes
1 answer
14
In CRC if the data unit is 100111001 and the divisor is 1011 then what is dividend at the receiver? 100111001101 100111001011 100111001 100111001110
asked Jun 19, 2016 in Computer Networks jothee 2.7k views
7 votes
3 answers
15
How many characters per sec (7 bits + 1 parity) can be transmitted over a 2400 bps line if the transfer is synchronous ( 1 start and 1 stop bit)? 300 240 250 275
asked Jun 19, 2016 in Computer Networks jothee 6.5k views
7 votes
6 answers
16
How many bits internet address is assigned to each host on a TCP/IP internet which is used in all communication with the host? 16 bits 32 bits 48 bits 64 bits
asked Jun 19, 2016 in Computer Networks jothee 3k views
4 votes
3 answers
17
What frequency range is used for microwave communications, satellite and radar? Low frequency: 30 kHz to 300 kHz Medium frequency: 300 kHz to 3 MHz Super high frequency: 3000 MHz to 30000 MHz Extremely high frequency: 30000 kHz
asked Jun 19, 2016 in Computer Networks jothee 2.3k views
5 votes
1 answer
18
A T-switch is used to Control how messages are passed between computers Echo every character that is received Transmit characters one at a time Rearrange the connections between computing equipments
asked Jun 19, 2016 in Computer Networks jothee 2.4k views
4 votes
2 answers
19
To declare the version of XML, the correct syntax is <?xml version='1.0'/> <*xml version='1.0'/> <?xml version="1.0"/> <xml version='1.0'/>
asked Jun 19, 2016 in Web Technologies jothee 2.4k views
4 votes
3 answers
20
To add a background color for all <h1> elements, which of the following HTML syntax is used h1 { background-color :#FFFFFF} { background-color :#FFFFFF} . h1 h1 { background-color :#FFFFFF} . h1(all) h1. all{bgcolor= #FFFFFF}
asked Jun 19, 2016 in Web Technologies jothee 2k views
10 votes
2 answers
21
Let $R_1$ and $R_2$ be regular sets defined over the alphabet, then $ R_1 \cap R_2$ is not regular $R_1 \cup R_2$ is not regular $\Sigma^* - R_1$ is regular $R_1^*$ is not regular
asked Jun 19, 2016 in Theory of Computation jothee 2.3k views
6 votes
3 answers
22
If a node has $K$ children in $B$ tree, then the node contains exactly _____ keys. $K^2$ $K-1$ $K+1$ $\sqrt{K}$
asked Jun 19, 2016 in Databases jothee 2.4k views
7 votes
2 answers
23
Consider the following program. main() { fork(); fork(); fork(); } How many new processes will be created? 8 6 7 5
asked Jun 19, 2016 in Operating System jothee 2.4k views
10 votes
1 answer
24
Suppose a system contains $n$ processes and system uses the round-robin algorithm for CPU scheduling then which data structure is best suited ready queue of the process stack queue circular queue tree
asked Jun 19, 2016 in Operating System jothee 3.9k views
11 votes
4 answers
25
In a lottery scheduler with 40 tickets, how we will distribute the tickets among 4 processes $P_1, P_2, P_3$ and $P_4$ such that each process gets 10%, 5%, 60% and 25% respectively? $P_1$ $P_2$ $P_3$ $P_4$ A 12 4 70 30 B 7 5 20 10 C 4 2 24 10 D 8 5 30 40
asked Jun 17, 2016 in Operating System jothee 2.5k views
5 votes
2 answers
26
If there are 32 segments, each size 1 k bytes, then the logical address should have 13 bits 14 bits 15 bits 16 bits
asked Jun 17, 2016 in Operating System jothee 6.8k views
8 votes
2 answers
27
Which statement is true? LALR parser is more powerful and costly as compare to other parsers All CFG's are LP and not all grammars are uniquely defined Every SLR grammar is unambiguous but not every unambiguous grammar is SLR LR(K) is the most general back tracking shift reduce parsing method
asked Jun 17, 2016 in Compiler Design jothee 3.5k views
5 votes
2 answers
28
Yacc stands for yet accept compiler constructs yet accept compiler compiler yet another compiler constructs yet another compiler compiler
asked Jun 17, 2016 in Compiler Design jothee 1.3k views
7 votes
3 answers
29
Which one of the following is a top-down parser? Recursive descent parser Shift left associative parser SLR(k) parser LR(k) parser
asked Jun 17, 2016 in Compiler Design jothee 2.4k views
12 votes
3 answers
30
Which grammar rules violate the requirement of the operator grammar? A, B, C are variables and a, b, c are terminals $A \rightarrow BC$ $A \rightarrow CcBb$ $A \rightarrow BaC$ $A \rightarrow \epsilon$ (a) 1 only (b) 1 and 2 (c) 1 and 3 (d) 1 and 4
asked Jun 17, 2016 in Compiler Design jothee 3.9k views
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