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Recent questions tagged test-series
0
votes
1
answer
181
Applied Test Series
In the CSMA/CD network the bandwidth of the link is 10 Mbps, two stations are connected at both the ends of the link. The speed of the transmission on the links is 5 x 10 ^6 m/sec. What is the length of the link in kilometre, if the minimum frame size is 500 bytes ?
LRU
asked
in
Computer Networks
Oct 21, 2021
by
LRU
422
views
test-series
computer-networks
data-link-layer
0
votes
0
answers
182
Applied Test Series
How big would the window size have to be for the channel utilization to be greater than 98 percent and the bandwidth is 1 Gbps? Suppose that the size of a packet is 1,500 bytes, including both header fields and data. The one way propagation delay is 15 milliseconds for the channel ?
LRU
asked
in
Computer Networks
Oct 21, 2021
by
LRU
341
views
test-series
computer-networks
data-link-layer
ethernet
2
votes
1
answer
183
Applied Test Series
In a system which has only 3 processes, there are 2 copies of R1 resource, 3 copies of R2 resource. Say, in the current snapshot of the system, Process P1 holds 2 copies of resource R1 and needs 1 copy of R2 to complete its execution. P2 holds 2 copies ... at a much later point in time. The probability that the system will be in a deadlock again is ____ (up to 2 decimal places).
LRU
asked
in
Operating System
Oct 21, 2021
by
LRU
738
views
test-series
operating-system
deadlock-prevention-avoidance-detection
0
votes
1
answer
184
Applied Test Series
Consider a disk with a sector size of 512 bytes, 1000 tracks per surface, 25 sectors per track, 5 double-sided platters, and average seek time of 10 msec. The capacity of tracks in bytes is _____ KB
LRU
asked
in
Operating System
Oct 20, 2021
by
LRU
552
views
test-series
operating-system
disk
1
vote
1
answer
185
Applied Test Series
In a paged memory, the page hit ratio is 0.35. The page fault service time takes 100 ns. The time required to access a page in primary memory is 10 ns. The effective memory access time required to access a page is ____ ns
LRU
asked
in
Operating System
Oct 20, 2021
by
LRU
668
views
test-series
operating-system
effective-memory-access
page-fault
2
votes
2
answers
186
Applied Test Series
In a system SCAN, disk scheduling policy has been used. The number of tracks traversed by the head if the disk has 200 tracks and the requested tracks, in the order received, are 65, 48, 39, 08, 99, 164, 152, 38, 124 PS : Assume initial head position is at 65, and it will move towards 0
LRU
asked
in
Operating System
Oct 20, 2021
by
LRU
525
views
test-series
operating-system
disk-scheduling
3
votes
1
answer
187
Applied Test Series
Let S be a binary semaphore variable. Let S = 0 initially. Assume that no blocked processes exist in the system. The following signal (V), wait (P) operations are performed. 5 P, 7 V, 10 P, 13 V, 17 P The number of blocked processes at the end are _________.
LRU
asked
in
Operating System
Oct 17, 2021
by
LRU
580
views
test-series
operating-system
process-synchronization
binary-semaphore
1
vote
1
answer
188
Applied Test Series
It is given that in a system, processes P and C communicate by means of 3 semaphores and one buffer. The buffer size is given as 10. A semaphore M is used to implement mutual exclusion. Initial value of M is 1. The value of M is decremented by any process ... = 1, E = 7, F = 0 Out of the four combinations given above, the total number of combinations which cannot exist is ____
LRU
asked
in
Operating System
Oct 17, 2021
by
LRU
642
views
test-series
operating-system
process-synchronization
semaphore
4
votes
1
answer
189
Applied Test Series
Consider the following statements : Satisfies Mutual exclusion Satisfies Progress Satisfies Bounded wait Suffers from deadlock The number of above statements that is correct about disable interrupt for a uniprocessor system is ___.
LRU
asked
in
Operating System
Oct 17, 2021
by
LRU
1.3k
views
test-series
process-synchronization
operating-system
2
votes
2
answers
190
Applied Test Series
The solution for process synchronization is given below : Which of the following is correct about the above given solution? (A) Satisfies Mutual Exclusion (B) Satisfies Progress (C) Satisfies Bounded wait (D) Suffers from deadlock
LRU
asked
in
Operating System
Oct 17, 2021
by
LRU
568
views
test-series
operating-system
process-synchronization
multiple-selects
2
votes
2
answers
191
Applied Test Series
Consider an array contains n integers, each integer belongs to {0, 1, 2}. What is the best case time complexity to sort an array?
LRU
asked
in
Algorithms
Oct 15, 2021
by
LRU
642
views
test-series
algorithms
time-complexity
array
2
votes
1
answer
192
Applied Test Series
A Professor tells 3 Jokes in his maths class each year. How large a set of jokes does the professor need in order never to repeat the exact same triple of jokes over a period of 12 years?_________
LRU
asked
in
Combinatory
Oct 15, 2021
by
LRU
676
views
test-series
discrete-mathematics
combinatory
0
votes
2
answers
193
Applied Test Series
A link has a transmission speed of 500 × 10^6 bpsec. Assume acknowledgment has negligible transmission delay, and it's one way propagation delay is 2 sec. Also assumes that the processing delays at nodes are also negligible. If data packet size is 107 bits, then the efficiency of Go-Back-7 protocol is _______ (in %) [Correct upto two places of decimals].
LRU
asked
in
Computer Networks
Oct 13, 2021
by
LRU
682
views
test-series
computer-networks
data-link-layer
go-back-n
0
votes
2
answers
194
Applied Test Series
In the GO back N ARQ sender is sending the 20 packets to the destination with a window size of 4. Every sixth packet is lost and after a packet loss sender is sending one dummy packet outside the window for ensuring everything is correct [ dummy packet is an outside packet not the part of the window]. How many number of transmissions will be there?
LRU
asked
in
Computer Networks
Oct 13, 2021
by
LRU
1.1k
views
test-series
computer-networks
stop-and-wait
data-link-layer
go-back-n
1
vote
1
answer
195
Applied Test Series
Two systems are connected with the link and link is having a bandwidth of 20 Mbps. Assume the distance between them is 2400 km and the size of the packet is 2 KB with propagation speed is the same as the speed of light. What is the minimum number of bits required for the window to achieve 100% utilization in selective repeat protocol?
LRU
asked
in
Computer Networks
Oct 13, 2021
by
LRU
725
views
test-series
computer-networks
data-link-layer
stop-and-wait
1
vote
1
answer
196
Applied Test Series
In a CDMA/CD network with a data rate of 20 Mbps, the maximum distance between station pair is found to be 2000 m then what is the minimum transmission time(in sec) for the network if the speed is 4 * 10 ^4 m/sec ?
LRU
asked
in
Computer Networks
Oct 13, 2021
by
LRU
1.1k
views
test-series
computer-networks
csma-cd
ethernet
data-link-layer
4
votes
1
answer
197
Applied Test Series
Suppose that the PURE ALOHA protocol is used to share a 50 Kbps satellite channel, suppose that frames are 1000 bits long. Find the maximum throughput of the system in frames/second. [Note: Assume K = 10^3, write the floor value of the answer]
LRU
asked
in
Computer Networks
Oct 13, 2021
by
LRU
2.6k
views
test-series
computer-networks
ethernet
pure-aloha
2
votes
0
answers
198
Applied Test Series
A hypothetical system OSXZ_09 implements paging. Given LAS = 4 GB, PAS = 64 MB, Page size = 4 KB. A protection bit and a reference bit is also present in a page table entry. Then the size of the innermost page table is ____ B. Note : The memory is byte addressable.
LRU
asked
in
Operating System
Oct 11, 2021
by
LRU
860
views
test-series
memory-management
operating-system
5
votes
2
answers
199
Applied Test Series
A given system has 13 processes and x number of copies of a resource r. Out of 13 processes, 6 processes require 2 resources each, 3 processes require 3 resources each and the remaining processes require 5 resources each. The minimum value of x will guarantee that the system is deadlock free is ____.
LRU
asked
in
Operating System
Oct 10, 2021
by
LRU
550
views
test-series
operating-system
deadlock-prevention-avoidance-detection
numerical-answers
2
votes
2
answers
200
Applied Test Series
Given 5 processes and R copies of total resources in a system, each process requires 7 copies of resources to complete its execution. The maximum value of R to have deadlock is ___
LRU
asked
in
Operating System
Oct 10, 2021
by
LRU
710
views
test-series
operating-system
deadlock-prevention-avoidance-detection
numerical-answers
2
votes
1
answer
201
Applied Test Series
There are 5 processes in a system where each of them has a requirement of x resources. In the worst case, y number of resources would ensure that the system is deadlock free. The system later on has 7 processes that require x resources each. In the worst case, (y + 4) resources would ensure that the system is deadlock free. The value of x is ______
LRU
asked
in
Operating System
Oct 10, 2021
by
LRU
485
views
test-series
operating-system
deadlock-prevention-avoidance-detection
numerical-answers
1
vote
1
answer
202
Applied Test Series
What will be the length of maximum burst in sec where the capacity of the router is 10MB. The maximum output rate of the router is 20 MBPS and the token rate is 12 MBPS.
LRU
asked
in
Computer Networks
Oct 10, 2021
by
LRU
856
views
test-series
computer-networks
tcp
token-bucket
3
votes
1
answer
203
Applied Test Series
Let an IP datagram of the following data and header sizes be sent through a network of MTU 500 bytes. Calculate the fragment offset values that should be set for 3rd fragment ? IP header = 40 bytes TCP header = 60 bytes• Data = 1000 bytes• MTU = 500 bytes•
LRU
asked
in
Computer Networks
Oct 10, 2021
by
LRU
1.0k
views
test-series
computer-networks
network-layer
fragmentation
3
votes
1
answer
204
Applied Test Series
Consider a memory system that uses a 32-bit address to address at the byte level, plus a cache that uses a 64-byte line size. Assume a four-way set-associative cache with a tag field in the address of 9 bits. The total number of cache lines/ blocks in the cache are_____
LRU
asked
in
CO and Architecture
Oct 8, 2021
by
LRU
892
views
test-series
co-and-architecture
cache-memory
3
votes
1
answer
205
Applied Test Series
Suppose TCP uses congestion control without slow start.The first transmission start with 1 MSS, Assuming cwnd increases by 3 MSS every time a batch of ACKs is received and assuming approximately constant round-?trip times, the next window after timeout will ... timeout occurs at the sixth transmission, how many total round trip time requires to reach the window size of 20 MSS.
LRU
asked
in
Computer Networks
Oct 8, 2021
by
LRU
1.7k
views
test-series
computer-networks
congestion-control
tcp
2
votes
2
answers
206
Applied Test Series
In the TCP connection, the maximum segment size used by the connection is 1000 bytes. What is the congestion window(in bytes) after the 4th transmission and receives acks for all of them? Assume the connection uses only slow-start ?
LRU
asked
in
Computer Networks
Oct 8, 2021
by
LRU
1.0k
views
test-series
computer-networks
congestion-control
tcp
2
votes
1
answer
207
Applied Test Series
Suppose TCP uses AIMD for its congestion control without slow start. Assuming cwnd increases by 2 MSS every time a batch of ACKs is received and assuming approximately constant round-trip times, how long in round trip time does it take for cwnd to increase from 4 MSS to 12 MSS (assuming no loss events)?
LRU
asked
in
Computer Networks
Oct 8, 2021
by
LRU
1.5k
views
test-series
computer-networks
tcp
congestion-control
1
vote
1
answer
208
Applied Test Series
Consider a selective repeat sliding window protocol, the window size of the sender is 128. What will be the sequence number for the 800th frame? [ Assume the available sequence number are the minimum required for window size of 128]
LRU
asked
in
Computer Networks
Oct 7, 2021
by
LRU
523
views
test-series
computer-networks
data
data-link-layer
1
vote
2
answers
209
Applied Test Series
For the given network address 178.100.0.0 we need the 2000 subnets and 15 usable hosts then what will be the subnet mask for this allotment ?
LRU
asked
in
Computer Networks
Oct 7, 2021
by
LRU
917
views
test-series
computer-networks
network-layer
ip-addressing
1
vote
1
answer
210
Applied Test Series
Consider source and destination in a 10 Mbps network with sender window has 5 packets. Transmission delay for a packet is 10 micro-sec. Propagation delay from source to destination is 250 micro-sec. How long is the sender idle once a window is transmitted before starting the second window? Assume ACK transmission time is negligible.
LRU
asked
in
Computer Networks
Oct 4, 2021
by
LRU
250
views
test-series
computer-networks
data-link-layer
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