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Recent questions tagged tcp

Recent questions tagged tcp
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GATE CSE 2021 Set 2 | Question: 7 | Video Solution
Arjun asked in Computer Networks Feb 18, 2021
by Arjun
1.4k points
878 views
5 votes
3 answers 1.2k views
GATE CSE 2021 Set 1 | Question: 45 | Video Solution
Arjun asked in Computer Networks Feb 18, 2021
by Arjun
1.4k points
1.2k views
0 votes
0 answers 31 views
Gradeup Test series
In the TCP connection (AIMD) algorithm, the sender sending threshold (SSThresh) is 12MSS and congestion window size (cwnd) is 1MSS. If round trip time (RTT) is 100ms then what amount of time is required to start the congestion avoidance phase? (Assume no timeout occur at the sender side) 300ms 400ms 700ms 800ms
Gautam9596 asked in Computer Networks Jan 20, 2021
by Gautam9596
5 points
31 views
0 votes
0 answers 127 views
Applied gate topicwise test 2021
On any given Sunday , Sam initiates a connection with his girlfriend Alice in order to plan what movie they're going to watch on tuesdays with Morrie. This sunday , immediately after Sam immediately after Sam initiates the connection, Alice decides ... queuing and processing delays at both the sender and receiver and assume there are no losses. Please solve this .
Kirtisoni asked in Computer Networks Nov 12, 2020
by Kirtisoni
27 points
127 views
0 votes
0 answers 36 views
TCP Timeout Timer Management
I know that, if the timeout is set too short, unnecessary retransmissions will occur. Suppose, we send a segment with sequence number = 100 and segment length = 100. This segment is received by the the receiver and the receiver sends a ... sender accept the delayed ACK? Will the receiver discard the duplicate segment? Does Karn's Algorithm take care of this problem?
arjungangwar asked in Computer Networks Jul 27, 2020
by arjungangwar
5 points
36 views
0 votes
0 answers 24 views
GATE2014-1-27 Video Solution
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 _________.
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
24 views
0 votes
0 answers 39 views
GATE2015-2-34 Video Solution
Assume that the bandwidth for a $TCP$ connection is $1048560$ bits/sec. Let $\alpha$ be the value of RTT in milliseconds (rounded off to the nearest integer) after which the $TCP$ window scale option is needed. Let $\beta$ be the maximum possible window size with ... $500$ milliseconds, $65535$ $\times $2$^{14}$ $500$ milliseconds, $65535$ $\times $2$^{16}$
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
39 views
0 votes
0 answers 18 views
GATE2009-47 Video Solution
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 ... which sequence numbers used for packets of a connection can increase? $0.015$/s $0.064$/s $0.135$/s $0.327$/s
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
18 views
0 votes
0 answers 23 views
GATE2004-56 Video Solution
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 ... $IP$ layer at the destination for one application message, in the best case? Consider only data packets. $200$ $220$ $240$ $260$
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
23 views
0 votes
0 answers 21 views
GATE2018-25 Video Solution
Consider a long-lived $TCP$ session with an end-to-end bandwidth of $1$ $\text{Gbps}$ (-$10^9$ bits-per-second). The session starts with a sequence number of $1234$. The minimum time (in seconds, rounded to the closet integer) before this sequence number can be used again is ____
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
21 views
0 votes
0 answers 20 views
GATE2004-57 Video Solution
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 TCP layer prefixes $20$ byte header to the message. This passes through an intermediate network $B$. ... overheads. $325.5$ $\text{Kbps}$ $354.5$ $\text{Kbps}$ $409.6$ $\text{Kbps}$ $512.0$ $\text{Kbps}$
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
20 views
0 votes
0 answers 28 views
GATE2018-14 Video Solution
Consider the following statements regarding the slow start phase of the TCP congestion control algorithm. Note that cwnd stands for the TCP congestion window and MSS window denotes the Maximum Segments Size: The cwnd increases by $2$ MSS on every successful acknowledgment The cwnd ... true Only $\text{(iv)}$ is true Only $\text{(i)}$ and $\text{(iv)}$ are true
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
28 views
0 votes
0 answers 21 views
GATE2005-23 Video Solution
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
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
21 views
0 votes
0 answers 36 views
GATE2006-IT-69 Video Solution
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 $Z$
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
36 views
0 votes
0 answers 16 views
GATE2017-1-14 Video Solution
Consider a TCP client and a TCP server running on two different machines. After completing data transfer, the TCP client calls close to terminate the connection and a FIN segment is sent to the TCP server. Server-side TCP responds by sending an ACK, which ... client-side TCP connection wait for the FIN from the server-side TCP? LAST-ACK TIME-WAIT FIN-WAIT-1 FIN-WAIT-2
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
16 views
0 votes
0 answers 19 views
GATE2015-1-1‏9 Video Solution
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 m+1. ... is always less than or equal to the advertised window. III only I and III only I and IV only II and IV only
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
19 views
0 votes
0 answers 67 views
GATE2008-IT-69 Video Solution
The three way handshake for TCP connection establishment is shown below. Which of the following statements are TRUE? $S1:$ Loss of $SYN + ACK$ from the server will not establish a connection $S2:$ Loss of $ACK$ from the client cannot establish the connection $S3:$ The server ... no packet loss $S2$ and $S3$ only $S1$ and $S4$ only $S1$ and $S3$ only $S2$ and $S4$ only
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
67 views
0 votes
0 answers 16 views
GATE2012-22 Video Solution
Which of the following transport layer protocols is used to support electronic mail? SMTP IP TCP UDP
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
16 views
0 votes
0 answers 15 views
GATE2015-3-22 Video Solution
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
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
15 views
0 votes
0 answers 14 views
GATE2004-IT-28 Video Solution
In TCP, a unique sequence number is assigned to each byte word segment message
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
14 views
0 votes
0 answers 48 views
GATE2007-IT-13 Video Solution
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 ... $(ii)$ are false, but $(iii)$ is true $(i), (ii)$ and $(iii)$ are false
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
48 views
0 votes
0 answers 13 views
GATE2016-2-25 Video Solution
Identify the correct sequence in which the following packets are transmitted on the network by a host when a browser requests a webpage from a remote server, assuming that the host has just been restarted. HTTP GET request, DNS query, TCP SYN DNS query, HTTP GET request, TCP SYN DNS query, TCP SYN, HTTP GET request. TCP SYN, DNS query, HTTP GET request.
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
13 views
0 votes
0 answers 28 views
GATE2004-IT-23 Video Solution
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
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
28 views
0 votes
0 answers 23 views
GATE2013-12 Video Solution
The transport layer protocols used for real time multimedia, file transfer, DNS and email, respectively are TCP, UDP, UDP and TCP UDP, TCP, TCP and UDP UDP, TCP, UDP and TCP TCP, UDP, TCP and UDP
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
23 views
0 votes
0 answers 21 views
GATE2007-IT-14 Video Solution
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 ... $Y$ (in that order) are $60$ and $290$ $230$ and $291$ $60$ and $231$ $60$ and $230$
admin asked in Computer Networks Apr 18, 2020
by admin
585 points
21 views
0 votes
0 answers 25 views
Explain the statement of Data offset or TCP header length ,Source : Wikipedia
shaktisingh asked in Computer Networks Dec 11, 2019
by shaktisingh
105 points
25 views
0 votes
0 answers 23 views
self doubt-TCP connection establishment
If suppose data transfer is going on from the client(using socket S1) to server (using socket S2).then suddenly while data transfer is going on the server receives a SYN packet from the same client having the same socket S1.to the same socket S2. what will the server do? Will it send an RST flag?
Doraemon asked in Computer Networks Nov 19, 2019
by Doraemon
73 points
23 views
0 votes
0 answers 35 views
Computer network tcp
Consider a tcp connection is established between from host A to host B between processes P1 abnd P2 running. MSS = 800 bytes. Consider an instant when threshold at P1 is 8000 bytes. Then, P1 receives an ACK. After reception and processing of this ACK, the ... . What was the congestion window at time, i.e. before the ACK was processed? 6400 bytes 7200 bytes 8000 bytes 8800 bytes
sagar2405 asked in Computer Networks Aug 6, 2019
by sagar2405
193 points
35 views
0 votes
0 answers 51 views
Computer Networks
Consider host A wants to transmits a 25000 bytes long file to host B using TCP. If MSS is 1000 bytes and slow start threshold is 16 MSS. How many RTT it will take to transmits the complete file?
sagar2405 asked in Computer Networks Aug 5, 2019
by sagar2405
193 points
51 views
0 votes
0 answers 46 views
Computer network - TCP
There are two nodes on a network C and S. C is client and S is server. C wants to connect to S and send a message that is 35KB long using TCP. Assume that a single packet can hold up a 2KB of data ans the headers are negligibly ... start stage, initially SSthresh = 32KB and that there is no packet loss. At what time will the server finish receiving the message from client?
sagar2405 asked in Computer Networks Jul 30, 2019
by sagar2405
193 points
46 views
0 votes
0 answers 87 views
Computer Networks - Test series
Consider that at time t, a TCP connections has a congestion window of 4000 bytes. The maximum segment size used by the connection is 1000 bytes. What is the congestion window(in bytes) after it send out 4 packets and receive acks for all of them? Suppose thre is one ack per packet. If the connection is in slow start? If the connection is in congestion avoidance?
sagar2405 asked in Computer Networks Jul 30, 2019
by sagar2405
193 points
87 views
0 votes
0 answers 21 views
Computer Networks - UDP and TCP doubt
UDP provides error control mechanism. According to me, statement is false because it uses checksum to detect errors but it cannot control it unlike TCP. Is my statement correct ? If not please give appropriate reasons for the answer of the given statement.
user2525 asked in Computer Networks Jul 30, 2019
by user2525
2.4k points
21 views
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