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Recent questions tagged testbook-test-series

1 vote
1 answer
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A file system with 300 GB uses a file descriptor with 8 direct block address. 1 indirect block address and 1 doubly indirect block address. The size of each disk block is 256 Bytes and the size of each disk block address is 16 Bytes. The maximum possible file size in this file system is? The answer given was 70KB. Thanks!
asked Jan 28, 2019 in Operating System Abhipsa 188 views
0 votes
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A UNIX style i-node has 15 direct pointers and one single, one double and one triple indirect pointers. The disk block size is 1KB, disk block address is 64 bits and 48 bit integers are used. What is the maximum possible fize size in bytes? Thanks!
asked Jan 28, 2019 in Operating System Abhipsa 128 views
3 votes
1 answer
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Consider the infinite two-dimensional grid G={(m,n)| m and n are integers} Every point in G has 4 neighbors, North, South, East, and West, obtained by varying m or n by 1. Starting at the origin (0,0), a string of command letters N, S, E, W generates a ... a closed path. Which of the following statements is TRUE? i) L is Regular. ii) L is context free. iii) L complement is context free. Thanks!
asked Jan 22, 2019 in Theory of Computation Abhipsa 144 views
1 vote
1 answer
5
Frames of 20000 bytes are sent over 10 MBps full duplex link between 2 hosts. Propagation is 45 ms.Suppose that the sliding window protocol is used with the sender window size of 16 and acknowledgements are piggybacked.After sending 35 frames , what is the minimum time sender will have to wait before starting transmission of the next frame
asked Jan 18, 2019 in Computer Networks jatin khachane 1 330 views
1 vote
0 answers
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Que- Consider the following statements about the dining philosopher problem. 1. There should be at least 6 chopsticks to avoid deadlock for 6 philosophers. 2. If the asymmetric solution is implemented then $1^{st}$ philosopher picks up her right chopstick first while $6^{th}$ philosopher picks ... . Which of the above statement is correct? a. Only 1 b. Only 2 c. Both I and II d. None of the above
asked Jan 6, 2019 in Operating System Soumya29 223 views
0 votes
1 answer
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$Que-$ A sender uses a Stop-and-Wait protocol for transmission of $8000 \ K-bits$ size frames on a $1Gbps$ satellite channel with a propagation delay of $400 \ ms$. What will be the link utilization (%) if a probability of single frame error is $0.001?$ $\text{Note – Here Frame size is 8000 K- bits i.e 8}*10^6 \ bits$
asked Jan 6, 2019 in Computer Networks Soumya29 153 views
0 votes
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9
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How to solve such kind of questions ? Can anybody tell what's is the concept behind this ?? someone provide me link so that I read it and understand the actual concept
asked Dec 27, 2018 in DS Magma 168 views
1 vote
1 answer
12
The number of tables required to convert the relational schema $R(A, B, C, D, E, F, G, H)$ into $3NF$ with following functional dependency is ________ $A\rightarrow DG$ $AB\rightarrow E$ $D\rightarrow C$ $E\rightarrow F$ $G\rightarrow H$
asked Dec 27, 2018 in Databases jatin khachane 1 233 views
0 votes
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TCP opens a connection using an initial sequence number of 3500 and send data at 5MBps . The other third party opens the connection with sequence number of 1200. Wrap around for both the sequence numbers differs by 12562.77 sec .Calculate the Data rate(in KBps) for the second party
asked Dec 27, 2018 in Computer Networks jatin khachane 1 106 views
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15
The following C function takes two ASCII strings and determines whether one is an anagram of the other. An anagram of a string s is a string obtained by permuting the letters in s. int anagram (char *a, char *b){ int count [128], j; for (j = 0; j < 128; j++) count[j]=0; j = 0; while (a[j] && b[j ... count[b[j]]++ 3 A: count [a[j++]]++ and B: count[b[j]]-- 4 A: count[a[j]]++ and B: count [b[j++]]--
asked Dec 26, 2018 in Programming Magma 118 views
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DELELTE : 5 pop and 4 push require s2 (4 3 2) s1(empty) Insert (5) : s2(4 3 2) s1(5) 1 push delete : pop from S2 (4 3) s1 (5) 1 pop total : 6 POP , 5 PUSH where I’m wrong
asked Dec 26, 2018 in Programming Magma 89 views
0 votes
1 answer
18
A PC-related mode branch instruction is $8$Byte long. The address of the instruction,in decimal, is $548321.$Find the branch target address if the signed displacement in the instruction is $-29?$
asked Dec 23, 2018 in CO and Architecture Lakshman Patel RJIT 320 views
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19
TCP opens a connection using an initial sequence number of 3500 and sends data at 5 MBps. The other party opens the connection with a sequence number of 1200. Wrap around time for both the sequence numbers differ by 12562.77 sec. Calculate the data rate(in KB) for the second party.
asked Dec 23, 2018 in Computer Networks Aarvi Chawla 202 views
0 votes
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20
The probability of a shooter hitting the target is $\frac{1}{3}$ and three shots at the bull's eye are needed to win the game. What could be the least number of shots for the shooter to give him more than half-chance of winning the game$?$ $A)5$ $B)6$ $C)7$ $D)8$
asked Dec 23, 2018 in Probability Lakshman Patel RJIT 296 views
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21
A processor has $128$ distinct instructions. A $24-$bit instruction word has an opcode, register, and operand.The number of bits available for the operand field is $7.$The maximum possible value of the general-purpose register is _________
asked Dec 23, 2018 in CO and Architecture Lakshman Patel RJIT 379 views
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22
If $y = f(x)$ is a solution of $ d^2y/dx^2 = 0$ , with boundary conditions $y=8$ at $x=0$ and $dy/dx =4$ at $x=16$, Find the value of $f(-2)$ When they say, $y = f(x)$ is a solution of $ d^2y/dx^2 = 0$ What does that mean?
asked Dec 18, 2018 in Mathematical Logic shreyansh jain 109 views
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23
The number of rows returned by sql query on given relation: SELECT * from emp where eno NOT IN (SELECT manager from emp) Query intends to find the number of employees who are not MANAGER so emp 2,3,4 are ruled out. But since it includes comparison with NULL so it will ... ,4,NULL} will return false. So NOT IN will give true and number of rows returned will be 1. Answer given is 0. Please clarify.
asked Dec 17, 2018 in Databases shreyansh jain 223 views
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26
Chandler is selling tickets for \$1 per ticket. In the queue for tickets, there are m people with a single \$ ... ) (m-1) / (m+1) (b) 2 / (m+1) (c) 18 / (m)(m+1)(m+2) (d) (m-2) / (m+2)
asked Dec 8, 2018 in Probability Rajat Agrawal007 76 views
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