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Answers by Tendua
0
votes
211
Need of TLB lookup before Cache Look up?
Why do we need to look in the TLB for a virtual address without looking into cache first? Why we do not look for a given data directly into the cache? TLB look up could increase hit time even if the data is in cache. Suppose there ... time required in this process equivalent to time required in a cache miss? So how it is going to speed up the memory access?
Why do we need to look in the TLB for a virtual address without looking into cache first?Why we do not look for a given data directly into the cache?TLB look up could inc...
530
views
answered
Sep 24, 2015
0
votes
212
Address Translation Table Size?
What will be the size of Address Translation Table, for 32b addresses if there is an entry for: a) each byte; b) each word , word size is 32b; c) each 256B unit ?
What will be the size of Address Translation Table, for 32b addresses if there is an entry for: a) each byte; b) each word , word size is 32b; c) each 256B unit ?
1.2k
views
answered
Sep 22, 2015
CO and Architecture
operating-system
co-and-architecture
address-translation
+
–
3
votes
213
Producer consumer code using semaphore
The code for producer consumer prob​lem using semaphore is producer's code do { * // produce an item in nextproduced wait(empty) ; wait(mutex) ; buffer[in] = nextProduced; in = (in + 1) % BUFFER-SIZE; signal(mutex ... producer does not affect 'out' and consumer does not affect 'in', so we could have used mutex1 and mutex2.
The code for producer consumer prob​lem using semaphore isproducer's code do { * // produce an item in nextproduced wait(empty) ; wait(mutex) ; buffer[in] = nextPro...
1.3k
views
answered
Sep 21, 2015
Operating System
operating-system
process-synchronization
inter-process-communication
semaphore
+
–
5
votes
214
ISRO2008-6
Which of the following transmission media is not readily suitable to CSMA operation? Radio Optical fibers Coaxial cable Twisted pair
Which of the following transmission media is not readily suitable to CSMA operation?RadioOptical fibersCoaxial cableTwisted pair
4.5k
views
answered
Sep 20, 2015
Computer Networks
isro2008
computer-networks
csma-cd
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–
7
votes
215
ISRO2008-4
On a LAN ,where are IP datagrams transported? In the LAN header In the application field In the information field of the LAN frame After the TCP header
On a LAN ,where are IP datagrams transported?In the LAN headerIn the application fieldIn the information field of the LAN frameAfter the TCP header
5.2k
views
answered
Sep 20, 2015
Computer Networks
isro2008
computer-networks
lan-technologies
+
–
0
votes
216
ISRO2008-76
The minimum number of fields with each node of doubly linked list is 1 2 3 4
The minimum number of fields with each node of doubly linked list is1234
19.8k
views
answered
Sep 20, 2015
DS
isro2008
data-structures
linked-list
+
–
0
votes
217
cpu utilization?
Assume that there are $2$ independent processes which are in memory and each process spends a fraction $\frac{1}{2}$ of its time waiting for I/O to complete. Each process requires $4$ minutes of CPU time. The utilization of CPU in percentage is _____.
Assume that there are $2$ independent processes which are in memory and each process spends a fraction $\frac{1}{2}$ of its time waiting for I/O to complete. Each process...
1.5k
views
answered
Sep 20, 2015
Operating System
operating-system
+
–
0
votes
218
Suggestion
wht if hard work doesn't rplies positively...how should i deal with it??
wht if hard work doesn't rplies positively...how should i deal with it??
311
views
answered
Sep 19, 2015
6
votes
219
GATE CSE 1994 | Question: 14b
For a $B^+$ - tree of order $d$ with $n$ leaf nodes, the number of nodes accessed during a search is $O(\_)$.
For a $B^+$ - tree of order $d$ with $n$ leaf nodes, the number of nodes accessed during a search is $O(\_)$.
3.6k
views
answered
Sep 19, 2015
Databases
gate1994
databases
b-tree
normal
descriptive
+
–
2
votes
220
Advantage of B+ tree over B tree
I am unable to get that what advantage do we get when we store only records consisting of primary attributes in case of B+ tree i.e. we do not store record pointers corresponding to those key attributes , we do it only at the leaf ... record pointer associated so I guess that's more advantageous , so then why database designers prefer B+ trees over B trees ?
I am unable to get that what advantage do we get when we store only records consisting of primary attributes in case of B+ tree i.e. we do not store record pointers corre...
4.0k
views
answered
Sep 19, 2015
Databases
databases
+
–
0
votes
221
confusion
I was solving few problems on secondary memory . In my book prescribed under our university i found in many solution they had done (2000 *69.14)/8 bytes =17.28 KB but HOW?? IT SHOULD BE 16.87 KB as 1 KB = 1024B not only here another sum had 128 * 100kbps = 13mbps but it should be 12.5 mbps please help me out i am very confused
I was solving few problems on secondary memory .In my book prescribed under our university i found in many solution they had done(2000 *69.14)/8 bytes =17.28 KB but HOW?...
560
views
answered
Sep 19, 2015
Operating System
operating-system
disk
+
–
0
votes
222
which of the following is correct...........
Identify the schedular which involves only in the decision for selection of partially serviced jobs? .S.T.S .L.T.S .M.T.S .NONE
Identify the schedular which involves only in the decision for selection of partially serviced jobs?.S.T.S.L.T.S.M.T.S.NONE
1.3k
views
answered
Sep 18, 2015
0
votes
223
Find no. of records in highest level of multi-level index
https://gateoverflow.in/259/gate2008_70
https://gateoverflow.in/259/gate2008_70
698
views
answered
Sep 18, 2015
1
votes
224
which of the following is not a necessary condition for deadlock?
which of the following is not a necessary condition for deadlock? a)Mutual exclusion b)Reentrancy c)Hold and Wait d)No pre-emption
which of the following is not a necessary condition for deadlock?a)Mutual exclusionb)Reentrancyc)Hold and Waitd)No pre-emption
39.6k
views
answered
Sep 17, 2015
Operating System
deadlock-prevention-avoidance-detection
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–
0
votes
225
Do we categorize all optimization problems in NP ?
I just want to confirm whether all optimization problems are in NP or not say to find the shortest path this can be done in polynomial time and If I am given a graph and I have to find whether there exists any path ... problem ,so is it that the optimization version of a problem is polynomial solvable and its similar decision version is NP.
I just want to confirm whether all optimization problems are in NP or not say to find the shortest path this can be done in polynomial time and If I am given a graph and ...
410
views
answered
Sep 17, 2015
Algorithms
p-np-npc-nph
shortest-path
time-complexity
+
–
1
votes
226
total number of 5 digit pallindrome????
584
views
answered
Sep 17, 2015
Combinatory
mathematical-logic
combinatory
+
–
6
votes
227
To sort n randomly generated numbers. One should prefer which sorting algo ,Quick or Heap
To sort n randomly generated numbers. One should prefer which sorting algo ,Quick or Heap?
To sort n randomly generated numbers. One should prefer which sorting algo ,Quick or Heap?
2.7k
views
answered
Sep 17, 2015
Algorithms
sorting
+
–
0
votes
228
how many possible different schedules are there?
A CPU scheduling algorithm determines an order for the execution of its scheduled processes.Given n processes to be scheduled on one processor , how many possible different schedules are there? a)n b)n2 c)n! d)2n
A CPU scheduling algorithm determines an order for the execution of its scheduled processes.Given n processes to be scheduled on one processor , how many possible differe...
1.7k
views
answered
Sep 17, 2015
1
votes
229
A packet filtering firewall can ?
A packet filtering firewall can a)deny certain users from accessing a service b)block worms and viruses from entering the network c)disallow some files from being accessed through FTP d)block some hosts from accessing the network
A packet filtering firewall cana)deny certain users from accessing a serviceb)block worms and viruses from entering the networkc)disallow some files from being accessed t...
1.7k
views
answered
Sep 17, 2015
0
votes
230
regular expression
12.0k
views
answered
Sep 17, 2015
Theory of Computation
regular-expression
+
–
1
votes
231
equivalence of regular expression
which of following pairs are equivalent? 1)(r1*)*=r1* 2)r1*(r1+r2)*=(r1+r2)* 3)(r1+r2)*=(r1*r2*)* 4)(r1r2)*=r1*r2*
which of following pairs are equivalent?1)(r1*)*=r1*2)r1*(r1+r2)*=(r1+r2)*3)(r1+r2)*=(r1*r2*)*4)(r1r2)*=r1*r2*
2.3k
views
answered
Sep 17, 2015
2
votes
232
how many entries will be there in the page table if it is inverted?
In a 64 bit machine,with 2GB RAM and 8KB page size,how many entries will be there in the page table if it is inverted? a)218 b)220 c)233 d)251
In a 64 bit machine,with 2GB RAM and 8KB page size,how many entries will be there in the page table if it is inverted?a)218b)220c)233d)251
1.5k
views
answered
Sep 17, 2015
4
votes
233
ISRO2014-18
Consider the following segment table in segmentation scheme : ... entry at the physical address $2527$ for segment Id $2$ A trap is generated Deadlock Fetches the entry at offset $27$ in Segment Id $3$
Consider the following segment table in segmentation scheme :$\begin{array}{|l|l|l|l|l|}\hline \textbf{Segment ID} & \textbf{Base} & \textbf{Limit} \\\hline \text{0} & \...
5.6k
views
answered
Sep 17, 2015
Operating System
segmentation
operating-system
isro2014
+
–
0
votes
234
Finding minimum number of tables
Find the minimum no of tables requires for representing the above relational model?
Find the minimum no of tables requires for representing the above relational model?
885
views
answered
Sep 16, 2015
0
votes
235
1) How many two state FA can be drawn over an alphabet {0,1} which accepts the empty language?
9.7k
views
answered
Sep 15, 2015
Theory of Computation
finite-automata
theory-of-computation
+
–
0
votes
236
I am not getting how ARP protocol actually works.Please someone clarify my doubt.
Suppose two systems are there in two different LANs, LAN-1 and LAN-2 respectively.System-1 (present in LAN-1) wants to communicate to system-2(present in LAN-2), for which sys-1 needs the MAC ddress of that ... i am wrong].Then,how the system-2 is going to reslove that request packet belongs to it..? Please explain.
Suppose two systems are there in two different LANs, LAN-1 and LAN-2 respectively.System-1 (present in LAN-1) wants to communicate to system-2(present in LAN-2), for whic...
531
views
answered
Sep 13, 2015
1
votes
237
In a token ring network, the transmission speed is 10 Mbps and propagation speed is 2 * 108 m/sec. The 1-bit delay in this network is equivalent to how many meters of cable?
In process synchronization what is true about disabling interrupts and TSL?1)Disabling interrupt is applicable only for single processor system2)TSL is applicable only fo...
1.5k
views
answered
Sep 13, 2015
0
votes
238
what is true about binary semaphore?
what is true about binary semaphore? 1)Binary semaphore has drawback called busy wait or spin lock. 2)Binary semaphore is applicable only for two processes 3)Binary semaphore has no drawback called busy wait or spin lock 4)none of the above
what is true about binary semaphore?1)Binary semaphore has drawback called busy wait or spin lock.2)Binary semaphore is applicable only for two processes3)Binary semaphor...
3.4k
views
answered
Sep 13, 2015
Operating System
semaphore
+
–
1
votes
239
In process synchonization what is true about disabling interrupts and TSL?
In process synchronization what is true about disabling interrupts and TSL? 1)Disabling interrupt is applicable only for single processor system 2)TSL is applicable only for single processor system 3)Both could be used in multiprocessor system 4)none of the above
In process synchronization what is true about disabling interrupts and TSL?1)Disabling interrupt is applicable only for single processor system2)TSL is applicable only fo...
2.0k
views
answered
Sep 13, 2015
Operating System
process-synchronization
+
–
0
votes
240
what is the difference between a job, task and a process ?
I have already gone through the stack-overflow posts but still could not clear with this concept , so plz clarify it with some examples rather than explaining its definition .
I have already gone through the stack-overflow posts but still could not clear with this concept , so plz clarify it with some examples rather than explaining its definit...
2.7k
views
answered
Sep 12, 2015
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