Recent questions tagged tcp / GATE Overflow for GATE CSE

11 votes

5 answers

271

ISRO2015-53
An ACK number of $1000$ in TCP always means that $999$ bytes have been successfully received $1000$ bytes have been successfully received $1001$ bytes have been successfully received None of the above

An ACK number of $1000$ in TCP always means that$999$ bytes have been successfully received$1000$ bytes have been successfully received$1001$ bytes have been successfully...

ajit

8.3k views

ajit asked Oct 15, 2015

41 votes

4 answers

272

GATE CSE 2015 Set 3 | Question: 22
Consider the following statements. TCP connections are full duplex TCP has no option for selective acknowledgement TCP connections are message streams Only I is correct Only I and III are correct Only II and III are correct All of I, II and III are correct

Consider the following statements.TCP connections are full duplexTCP has no option for selective acknowledgementTCP connections are message streamsOnly I is correctOnly I...

go_editor

12.4k views

go_editor asked Feb 14, 2015

47 votes

9 answers

273

GATE CSE 2015 Set 1 | Question: 1‏9
Suppose two hosts use a TCP connection to transfer a large file. Which of the following statements is/are FALSE with respect to the TCP connection? If the sequence number of a segment is $m,$ then the sequence number of the subsequent segment is always ... always less than or equal to the advertised window. III only I and III only I and IV only II and IV only

Suppose two hosts use a TCP connection to transfer a large file. Which of the following statements is/are FALSE with respect to the TCP connection?If the sequence number ...

makhdoom ghaya

18.9k views

makhdoom ghaya asked Feb 12, 2015

70 votes

5 answers

274

GATE CSE 2015 Set 2 | Question: 34
Assume that the bandwidth for a $\text{TCP}$ connection is $1048560$ bits/sec. Let $\alpha$ be the value of RTT in milliseconds (rounded off to the nearest integer) after which the $\text{TCP}$ window scale option is needed. Let $\beta$ be the maximum possible ... $^{16}$ $500$ milliseconds, $65535$ $\times $2$^{14}$ $500$ milliseconds, $65535$ $\times $2$^{16}$

Assume that the bandwidth for a $\text{TCP}$ connection is $1048560$ bits/sec. Let $\alpha$ be the value of RTT in milliseconds (rounded off to the nearest integer) afte...

go_editor

27.9k views

go_editor asked Feb 12, 2015

0 votes

2 answers

275

TCP connection
Suppose a client C repeatedly connects via TCP to a given port on a server S, and that each time it is C that initiates the close. If time-wait state lasts for 60 seconds, then how many TCP connections a second can 'C' make with all available ports? Assume client port are in the range of 1024 to 5119. A) 70 per sec B)10 per sec C) 13 per sec D) 100 per sec

Suppose a client C repeatedly connects via TCP to a given port on a server S, and that each time it is C that initiates the close. If time-wait state lasts for 60 seconds...

tushark

1.5k views

tushark asked Nov 4, 2014

26 votes

7 answers

276

GATE IT 2004 | Question: 28
In TCP, a unique sequence number is assigned to each byte word segment message

In TCP, a unique sequence number is assigned to eachbytewordsegmentmessage

Ishrat Jahan

11.2k views

Ishrat Jahan asked Nov 2, 2014

24 votes

3 answers

277

GATE IT 2004 | Question: 23
Which one of the following statements is FALSE? TCP guarantees a minimum communication rate TCP ensures in-order delivery TCP reacts to congestion by reducing sender window size TCP employs retransmission to compensate for packet loss

Which one of the following statements is FALSE?TCP guarantees a minimum communication rateTCP ensures in-order deliveryTCP reacts to congestion by reducing sender window ...

Ishrat Jahan

11.0k views

Ishrat Jahan asked Nov 2, 2014

41 votes

9 answers

278

GATE IT 2006 | Question: 69
A program on machine $X$ attempts to open a $UDP$ connection to port $5376$ on a machine $Y$, and a $TCP$ connection to port $8632$ on machine $Z$. However, there are no applications listening at the corresponding ports on $Y$ and $Z$. An $ICMP$ Port Unreachable error will be generated by $Y$ but not $Z$ $Z$ but not $Y$ Neither $Y$ nor $Z$ Both $Y$ and $Z$

A program on machine $X$ attempts to open a $UDP$ connection to port $5376$ on a machine $Y$, and a $TCP$ connection to port $8632$ on machine $Z$. However, there are no ...

Ishrat Jahan

14.1k views

Ishrat Jahan asked Nov 1, 2014

42 votes

4 answers

279

GATE IT 2007 | Question: 14
Consider a $TCP$ connection in a state where there are no outstanding $ACK$s. The sender sends two segments back to back. The sequence numbers of the first and second segments are $230$ and $290$ respectively. The first segment was lost, but the second segment was received correctly ... $Y$ (in that order) are $60$ and $290$ $230$ and $291$ $60$ and $231$ $60$ and $230$

Consider a $TCP$ connection in a state where there are no outstanding $ACK$s. The sender sends two segments back to back. The sequence numbers of the first and second seg...

Ishrat Jahan

10.6k views

Ishrat Jahan asked Oct 29, 2014

33 votes

5 answers

280

GATE IT 2007 | Question: 13
Consider the following statements about the timeout value used in TCP. The timeout value is set to the RTT (Round Trip Time) measured during TCP connection establishment for the entire duration of the connection. Appropriate RTT estimation algorithm is used to set the timeout value of a TCP ... $(ii)$ are false, but $(iii)$ is true $(i), (ii)$ and $(iii)$ are false

Consider the following statements about the timeout value used in TCP.The timeout value is set to the RTT (Round Trip Time) measured during TCP connection establishment f...

Ishrat Jahan

11.5k views

Ishrat Jahan asked Oct 29, 2014

46 votes

3 answers

281

GATE IT 2008 | Question: 69
The three way handshake for $\text{TCP}$ connection establishment is shown below. Which of the following statements are TRUE? $S1:$ Loss of $\text{SYN} + \text{ACK}$ from the server will not establish a connection $S2:$ Loss of $\text{ACK}$ from the client cannot establish ... on no packet loss $S2$ and $S3$ only $S1$ and $S4$ only $S1$ and $S3$ only $S2$ and $S4$ only

The three way handshake for $\text{TCP}$ connection establishment is shown below. Which of the following statements are TRUE?$S1:$ Loss of $\text{SYN} + \text{ACK}$ from...

Ishrat Jahan

15.3k views

Ishrat Jahan asked Oct 29, 2014

82 votes

12 answers

282

GATE CSE 2014 Set 1 | Question: 27
Let the size of congestion window of a TCP connection be $32$ KB when a timeout occurs. The round trip time of the connection is $100$ msec and the maximum segment size used is $2$ KB. The time taken (in msec) by the TCP connection to get back to $32$ KB congestion window is _________.

Let the size of congestion window of a TCP connection be $32$ KB when a timeout occurs. The round trip time of the connection is $100$ msec and the maximum segment size u...

go_editor

37.9k views

go_editor asked Sep 26, 2014

29 votes

4 answers

283

GATE CSE 2012 | Question: 22
Which of the following transport layer protocols is used to support electronic mail? $\textsf{SMTP}$ $\textsf{IP}$ $\textsf{TCP}$ $\textsf{UDP}$

Which of the following transport layer protocols is used to support electronic mail?$\textsf{SMTP}$$\textsf{IP}$$\textsf{TCP}$$\textsf{UDP}$

Arjun

20.3k views

Arjun asked Sep 25, 2014

28 votes

4 answers

284

GATE CSE 2013 | Question: 12
The transport layer protocols used for real time multimedia, file transfer, $\textsf{DNS}$ and email, respectively are $\textsf{TCP, UDP, UDP}\; \text{and}\; \textsf{TCP}$ $\textsf{UDP, TCP, TCP}\; \text{and}\; \textsf{UDP}$ $\textsf{UDP, TCP, UDP}\; \text{and}\; \textsf{TCP}$ $\textsf{TCP, UDP, TCP}\;\text{and}\; \textsf{UDP}$

The transport layer protocols used for real time multimedia, file transfer, $\textsf{DNS}$ and email, respectively are$\textsf{TCP, UDP, UDP}\; \text{and}\; \textsf{TCP}$...

Arjun

12.1k views

Arjun asked Sep 23, 2014

30 votes

5 answers

285

GATE CSE 2005 | Question: 23
Packets of the same session may be routed through different paths in: TCP, but not UDP TCP and UDP UDP, but not TCP Neither TCP nor UDP

Packets of the same session may be routed through different paths in:TCP, but not UDPTCP and UDPUDP, but not TCPNeither TCP nor UDP

Kathleen

19.6k views

Kathleen asked Sep 22, 2014

86 votes

7 answers

286

GATE CSE 2009 | Question: 47
While opening a $TCP$ connection, the initial sequence number is to be derived using a time-of-day (ToD) clock that keeps running even when the host is down. The low order $32$ bits of the counter of the ToD clock is to be used for the initial sequence numbers ... sequence numbers used for packets of a connection can increase? $0.015$/s $0.064$/s $0.135$/s $0.327$/s

While opening a $TCP$ connection, the initial sequence number is to be derived using a time-of-day (ToD) clock that keeps running even when the host is down. The low orde...

Kathleen

25.5k views

Kathleen asked Sep 22, 2014

66 votes

3 answers

287

GATE CSE 2004 | Question: 56
Consider three IP networks $A, B$ and $C$. Host $H_A$ in network $A$ sends messages each containing $180$ bytes of application data to a host $H_C$ in network $C$. The $\text{TCP}$ layer prefixes $20$ byte header to the message. This passes ... $200$ $220$ $240$ $260$

Consider three IP networks $A, B$ and $C$. Host $H_A$ in network $A$ sends messages each containing $180$ bytes of application data to a host $H_C$ in network $C$. The $\...

Kathleen

23.2k views

Kathleen asked Sep 18, 2014

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