Recent questions tagged computer-networks / GATE Overflow for GATE CSE

8 votes

2 answers

31

GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 51
A TCP connection has been established between hosts $\text{A}$ and $\text{B. A}$ receives a packet from $\text{B}$ with the following field values shown below: Sequence: $1001$ Acknowledgment: $5001$ Window size: $3000$ [ ... Payload Size: $1000]$ Sequence: $8001$ Acknowledgment: $1053$ Window size: $2000$ [TCP Payload Size: $1000]$

A TCP connection has been established between hosts $\text{A}$ and $\text{B. A}$ receives a packet from $\text{B}$ with the following field values shown below:Sequence: $...

GO Classes

861 views

GO Classes asked Jan 28

8 votes

1 answer

32

GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 52
Consider a sliding window protocol with a window size of $5$ using cumulative ACKs (and ACK is being sent for each segment). Retransmissions: retransmissions occur under two conditions: Reception of three duplicate ACKs (that is, three identical ... first retransmitted (expressed in terms of msec after $t=0 )?$ $23$ $42$ $43$ $102$

Consider a sliding window protocol with a window size of $5$ using cumulative ACKs (and ACK is being sent for each segment).Retransmissions: retransmissions occur under t...

GO Classes

879 views

GO Classes asked Jan 28

2 votes

0 answers

33

why is there no reduction in performance of stop and wait ARQ for satellite connections in comparison with other sliding window protocols?

pcla

170 views

pcla asked Jan 27

0 votes

1 answer

34

Test Series
Even through B's browser has only viewed the first 80 bytes, its stack has received up to byte 600 in sequence from A. What will be the ACK and window in TCP header that B next sends to A? Note: If ACK is X and window in TCP header is Y then write answer as X+Y.

Even through B's browser has only viewed the first 80 bytes,its stack has received up to byte 600 in sequence from A.What will be the ACK and window in TCP header that B ...

Neeraj patel

139 views

Neeraj patel asked Jan 23

2 votes

1 answer

35

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 10
Which of the following is/are true in context of error control? A CRC of length $\text{R}$ is calculated over a message of length $\text{M}$ ... code set has a minimum Hamming distance of two. A larger Hamming distance is needed to detect errors than to correct errors.

Which of the following is/are true in context of error control?A CRC of length $\text{R}$ is calculated over a message of length $\text{M}$ bits. The CRC will detect all ...

GO Classes

721 views

GO Classes asked Jan 21

4 votes

0 answers

36

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 11
Host $\text{A}$ and $\text{B}$ are behind different NATs. $\text{A's}$ private IP address is $192.168.1.11,$ and $\text{B's}$ private IP is $10.1.1.12.$ The public IP of the NAT box connected to $\text{A}$ is $4.3.2.1$ and ... destination IP address in the packet leaving $\text{A}?$ $4.3.2.1$ $2.2.2.2$ $10.1.1.12$ $1.2.3.4$

Host $\text{A}$ and $\text{B}$ are behind different NATs. $\text{A's}$ private IP address is $192.168.1.11,$ and $\text{B's}$ private IP is $10.1.1.12.$ The public IP of ...

GO Classes

539 views

GO Classes asked Jan 21

6 votes

1 answer

37

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 35
Consider two TCP connections $\text{A}$ and $\text{B}:$ The RTT for connection $\text{A}$ is $100$ ms while the RTT for connection $\text{B}$ is $200$ ms. Let $\textsf{ssthresh}$ denote the threshold at which the congestion ... end up sending $65$ more packets than connection $\text{A}$ in interval $[\text{T}, \text{T}+1]$ seconds.

Consider two TCP connections $\text{A}$ and $\text{B}:$The RTT for connection $\text{A}$ is $100$ ms while the RTT for connection $\text{B}$ is $200$ ms. Let $\textsf{sst...

GO Classes

717 views

GO Classes asked Jan 21

9 votes

1 answer

38

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 39
Consider a $\text{TCP}$ flow sending three segments, namely $1,2,$ and $3.$ Due to congestion, the $\text{TCP}$ flow experiences exactly two losses. Only segments can be lost; acknowledgments are not lost. Segments $1$ and $3$ are ... for all packets successfully? $\text{3 RTTs}$ $\text{5 RTTs}$ $\text{6 RTTs}$ $\text{8 RTTs}$

Consider a $\text{TCP}$ flow sending three segments, namely $1,2,$ and $3.$ Due to congestion, the $\text{TCP}$ flow experiences exactly two losses. Only segments can be ...

GO Classes

750 views

GO Classes asked Jan 21

10 votes

2 answers

39

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 40
Consider a network with two links. Node $\text{A}$ is trying to send packets to node $\text{C}.$ Let $p 1$ be the probability of failure on the first link $\text{(A-B)}$, and $p2$ ... C. $\dfrac{p_1}{1-p_1}+\dfrac{p_2}{1-p_2}$ D. $\dfrac{1}{\left(1-p_1\right)\left(1-p_2\right)}$

Consider a network with two links.Node $\text{A}$ is trying to send packets to node $\text{C}.$Let $p 1$ be the probability of failure on the first link $\text{(A-B)}$, a...

GO Classes

886 views

GO Classes asked Jan 21

0 votes

1 answer

40

Gate Workbook
IP = 201.15.16.19 Subnet mask = 255.255.255.224 Which of the following can be possible subnet ID? (Multiple Select Question) a) 201.15.16.96 b) 201.15.16.48 c) 201.15.16.64 d) 201.15.16.78

IP = 201.15.16.19Subnet mask = 255.255.255.224Which of the following can be possiblesubnet ID? (Multiple Select Question) a) 201.15.16.96b) 201.15.16.48c) 201.15.16.64d) ...

Sahil2025

219 views

Sahil2025 asked Jan 20

0 votes

1 answer

41

This question is from Made easy and the chapter is Computer Networks
Please give the full solution to this

Please give the full solution to this

Rohit Chakraborty

347 views

Rohit Chakraborty asked Jan 16

0 votes

1 answer

42

computer network
If window receiver size is 64 KB and The round trip time of a connection is 50 msec and maximum segment size used is 4 KB.In slow start phase the current congestion window size is 16 MSS and sender gets 4 ACK then then what should be value of congestion window (In KB)

If window receiver size is 64 KB and The round trip time of a connection is 50 msec and maximum segment size used is 4 KB.In slow start phase the current congestion windo...

gateranker

188 views

gateranker asked Jan 13

4 votes

1 answer

43

GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 32
On a wireless link, the probability of successfully sending a packet is $0.1.$ A stop-and-wait protocol is used to transfer data across the link. The channel condition is assumed to be independent of ... is the expected number of packets that experience timeout to send one packet? (Timeout occurs on unsuccessful transmission)

On a wireless link, the probability of successfully sending a packet is $0.1.$ A stop-and-wait protocol is used to transfer data across the link. The channel condition is...

GO Classes

555 views

GO Classes asked Jan 13

1 votes

1 answer

44

GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 33
The "two-out-of-five" code comprises all possible binary words of length $5$ containing exactly two $1$'s. Which of the following statements is correct regarding error detection or correction for the "two-out- ... detect up to $1$ bit of error and cannot correct errors. The code cannot detect or correct any errors.

The "two-out-of-five" code comprises all possible binary words of length $5$ containing exactly two $1$'s. Which of the following statements is correct regarding error de...

GO Classes

486 views

GO Classes asked Jan 13

8 votes

1 answer

45

GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 55
Consider two hosts $A$ and $B$, connected to router $R$, creating two subnets: Subnet $1$ and Subnet $2,$ as shown in the figure. The interface IPs of Subnet $1$ are also depicted in the given diagram. Assume that, for every subnet, the all-zeros address ... $125.126 .11 .16 / 27$ $125.126 .11 .16 / 28$ $125.126 .11 .28 / 30$

Consider two hosts $A$ and $B$, connected to router $R$, creating two subnets: Subnet $1$ and Subnet $2,$ as shown in the figure. The interface IPs of Subnet $1$ are also...

GO Classes

802 views

GO Classes asked Jan 13

5 votes

1 answer

46

GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 56
Host A has to inject' $30$ Mbits of data into a network via a token bucket regulator. The token bucket has a capacity of $15$ Mbits and is filled with tokens at the rate of $5$ Mbps. Data is buffered if it arrives ... enter the network, assuming that the host sends at a peak rate of $20$ Mbps and the token bucket is initially full?

Host A has to ‘inject’ $30$ Mbits of data into a network via a token bucket regulator. The token bucket has a capacity of $15$ Mbits and is filled with tokens at the ...

GO Classes

596 views

GO Classes asked Jan 13

0 votes

1 answer

47

Ace test series

dheerajgudipati

155 views

dheerajgudipati asked Jan 12

0 votes

1 answer

48

ISRO 2024
Which of the following is the cause of Ping of death issue related to ICMP packets? Buffer overflow Divide by ZERO Missing input sanitization Privilege escalation

Which of the following is the cause of Ping of death issue related to ICMP packets?Buffer overflowDivide by ZEROMissing input sanitizationPrivilege escalation

Ramayya

224 views

Ramayya asked Jan 7

3 votes

1 answer

49

ISRO 2024
Which of the following methods is used to detect double errors? Odd parity Even parity Checksum (CRC) Checksum (XOR)

Which of the following methods is used to detect double errors?Odd parityEven parityChecksum (CRC)Checksum (XOR)

Ramayya

300 views

Ramayya asked Jan 7

0 votes

0 answers

50

ISRO 2024
Match the following and select the correct option: (i) Encryption (P) Manipulation of identification of a host (through NIC identifier) (ii) MAC cloning (Q) Determining version and name of OS and OS utilities (iii) ARP spoofing (R) Protecting the confidentiality (i) Finger printing (S) Poisioning the IP to MAC address ... - (P), (i) - (Q) (i) - (R), (iI) - (Q), (i) - (S), (i) - (P)

Match the following and select the correct option:(i)Encryption(P)Manipulation of identification of a host (through NIC identifier)(ii)MAC cloning(Q)Determining version ...

Ramayya

218 views

Ramayya asked Jan 7

0 votes

0 answers

51

ISRO 2024
Match the following context of information Secuirty which are closely associated Matching (i) Ingress Filtering (P) Data Leakage Prevention (ii) Egress Filtering (Q) Hiding indentity of systems (iii) NAT (R) Keep Track of TCP/IP connections (iv) Stateful firewall (S) Malicious traffic prevention (i) - (S), (ii) - (P), ... ) - (P), (iv) - (Q) (i) - (R), (ii) - (Q), (iii) - (S), (iv) - (P)

Match the following context of information Secuirty which are closely associated Matching(i)Ingress Filtering(P)Data Leakage Prevention(ii)Egress Filtering(Q)Hiding inden...

Ramayya

175 views

Ramayya asked Jan 7

0 votes

0 answers

52

#selfdoubt
In CRC, if the dataword is 5 bits and the codeword is 8 bits, how many 0s need to be added to the dataword to make the dividend? What is the size of the remainder? What is the size of the divisor?

In CRC, if the dataword is 5 bits and the codeword is 8 bits, how many 0s need to be added to the dataword to make the dividend? What is the size of the remainder? What i...

Ansh Sinha

179 views

Ansh Sinha asked Jan 7

0 votes

1 answer

53

ISRO 2024
Which of the following is true? Both Parity and Cyclic Redundancy Check are error correcting codes Both Parity and Low Density Parity Check Code are error correcting codes Both Reed-Solemn code and Low Density Parity Check Code are error correcting codes Both Cyclic ... ! This question is asked in ISRO 2024. Due to insufficient points, couldn't add isro2024' tag, Please add it.

Which of the following is true?Both Parity and Cyclic Redundancy Check are error correcting codesBoth Parity and Low Density Parity Check Code are error correcting codesB...

Ramayya

164 views

Ramayya asked Jan 7

0 votes

0 answers

54

How is the next-hop IP information passed down from Network layer to DLL
Let's say my device wants to send a packet to far way device many networks away. Once my router receives the packet, it doesn't know much about this destination IP and chooses to send it to the next hop router. ... layer and change the port number can they also interfere in the DLL and do all operations by itself in reality?

Let’s say my device wants to send a packet to far way device many networks away. Once my router receives the packet, it doesn’t know much about this destination IP an...

phaniphani

119 views

phaniphani asked Jan 6

0 votes

0 answers

55

Andrew S. Tanenbaum Edition 5th Chapter 5 Question 35 (Page No. 493)
You have just explained the ARP protocol to a friend. When you are all done, he says: ‘‘I’ve got it. ARP provides a service to the network layer, so it is part of the data link layer.’’ What do you say to him?

You have just explained the ARP protocol to a friend. When you are all done, he says: ‘‘I’ve got it. ARP provides a service to the network layer, so it is part of t...

kalamar

106 views

kalamar asked Jan 3

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