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

5 votes

1 answer

1501

MadeEasy Test Series: Computer Networks - Ip Packet
If a datagram of size 4000 bytes from transport layer arrives at network layer and it has to be forwarded through a link with maximum capacity of 800 bytes. Then calculate the number of fragments needed if the header size is 20 bytes. Also calculate the data size of the last fragment.

If a datagram of size 4000 bytes from transport layer arrives at network layer and it has to be forwarded through a link with maximum capacity of 800 bytes. Then calculat...

MIRIYALA JEEVAN KUMA

2.4k views

MIRIYALA JEEVAN KUMA asked Jan 2, 2018

2 votes

1 answer

1502

MadeEasy Test Series: Computer Networks - Network Flow

MIRIYALA JEEVAN KUMA

342 views

MIRIYALA JEEVAN KUMA asked Jan 2, 2018

1 votes

1 answer

1503

self-doubt
Where is fragmentation is done in ipv4 ?..(at source or router or ob both ) where is segmentation is done in ipv4 ?(at source or router or ob both)

Where is fragmentation is done in ipv4 ?..(at source or router or ob both )where is segmentation is done in ipv4 ?(at source or router or ob both)

Nils

202 views

Nils asked Jan 1, 2018

2 votes

1 answer

1504

doubt
196.225.168.0/19 and 196.225.184.0/20 196.225.128.0/19 and 196.225.160.0/20 196.225.192.0/20 and 196.225.224.0/19 None of these

196.225.168.0/19 and 196.225.184.0/20196.225.128.0/19 and 196.225.160.0/20196.225.192.0/20 and 196.225.224.0/19None of these

nikkey123

453 views

nikkey123 asked Jan 1, 2018

1 votes

0 answers

1505

doubt

nikkey123

411 views

nikkey123 asked Jan 1, 2018

3 votes

2 answers

1506

MadeEasy Test Series: CO & Architecture - Speedup

Kalpataru Bose

935 views

Kalpataru Bose asked Dec 31, 2017

2 votes

1 answer

1507

Flooding
Flooding always guaranteed to send packet from source to destination with minimum number of hops. (True / False)

Flooding always guaranteed to send packet from source to destination with minimum number of hops. (True / False)

VS

1.3k views

VS asked Dec 31, 2017

2 votes

1 answer

1508

MadeEasy Test Series: Computer Networks - Congestion Control
. 63 Consider an instance of TCP's Additive Increase Multiplicative Decrease (AIMD) algorithm where the window size at the start of slow start phase is 2 MSS and the threshold at the start is 1st transmission is 16 MSS. Assume ... after transmission of 7th packet . The congestion window size at the end of 14 RTT is _________ (in MSS).

. 63Consider an instance of TCP’s Additive Increase Multiplicative Decrease (AIMD) algorithm where the window size at the start of slow start phase is 2 MSS and the thr...

sunita24

378 views

sunita24 asked Dec 31, 2017

0 votes

1 answer

1509

Ace Test Series: Computer Networks - Stop And Wait

hem chandra joshi

973 views

hem chandra joshi asked Dec 30, 2017

0 votes

2 answers

1510

question,
In CRC, if the degree of Generator polynomial is n, then the number of bits in divisor is?

In CRC, if the degree of Generator polynomial is n, then the number of bits in divisor is?

AnilGoudar

1.6k views

AnilGoudar asked Dec 30, 2017

4 votes

3 answers

1511

Fragmentation
An IPV4 datagram is received by a router, in which total length is 1500, HLEN value is 10 and offset value is 100.The MTU of the forwarding link is 200. What is the offset value of last fragment?

An IPV4 datagram is received by a router, in which total length is 1500, HLEN value is 10 and offset value is 100.The MTU of the forwarding link is 200. What is the offse...

AnilGoudar

2.3k views

AnilGoudar asked Dec 30, 2017

1 votes

1 answer

1512

MadeEasy Test Series 2017: Computer Networks - Congestion Control
Let the size of congestion window of a TCP connection be 38 KB when a timeout occurs. The propagation 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 36 KB congestion window is ________.

Let the size of congestion window of a TCP connection be 38 KB when a timeout occurs. The propagation time of the connection is 100 msec and the maximum segment size used...

rahul sharma 5

814 views

rahul sharma 5 asked Dec 30, 2017

1 votes

1 answer

1513

MadeEasy Test Series 2017: Computer Networks - Serial Communication
In synchronous transmission, 5 eight bit characters are included in 30 eight bit information characters. If bit rate of sender is 4200 bits/sec, what is the bit rate of receiver (in bits per sec)?

In synchronous transmission, 5 eight bit characters are included in 30 eight bit information characters. If bit rate of sender is 4200 bits/sec, what is the bit rate of r...

rahul sharma 5

896 views

rahul sharma 5 asked Dec 30, 2017

2 votes

0 answers

1514

MadeEasy Test Series 2017: Computer Networks - Communication
Assume there are 100 nodes are connected to a 1000 meter length of the coaxial cable. Using some protocol, each node can transmit 50 frames/second, where the average frame length is 2500 bits. The transmission rate at each node is 108 ... is ________. (Upto 1 decimal place) I got .125 but given is 12.5%?Please check which is correct?

Assume there are 100 nodes are connected to a 1000 meter length of the coaxial cable. Using some protocol, each node can transmit 50 frames/second, where the average fram...

rahul sharma 5

722 views

rahul sharma 5 asked Dec 30, 2017

1 votes

2 answers

1515

MadeEasy Test Series 2017: Computer Networks - Ip Packet
Consider station “A” send data to station “B”. Data frame contain MAC address, IP address and port address. Which of the following address may change on intermediate router A Destination IP address B Destination MAC C Source MAC D Source IP address

Consider station “A” send data to station “B”. Data frame contain MAC address, IP address and port address. Which of the following address may change on intermedi...

rahul sharma 5

1.4k views

rahul sharma 5 asked Dec 30, 2017

4 votes

2 answers

1516

MadeEasy Test Series: Computer Networks - Network Protocols
Which of the following option is false? A An ARP request packet include MAC address field and IP addresses of the receiver contains all 0's B BOOTP messages are encapsulated in a UDP packet. C ICMP reports error message to the ... ICMP messages can't be used to determine the round-trip time needed for an IP datagram to travel between them.

Which of the following option is false? A An ARP request packet include MAC address field and IP addresses of the receiver contains all 0’sB BOOTP messages are encapsul...

rahul sharma 5

1.4k views

rahul sharma 5 asked Dec 29, 2017

2 votes

1 answer

1517

MadeEasy Test Series: Computer Networks - Ipv6
Consider the following statements with respect to IPv6 : S1 : IPv6 packet has field for the header checksum. S2 : It has an explicit extension header for fragmentation. S3 : It has encrypted security payload (ESP) extension ... that integrity is provided by auth. extension header and confidentiality by ESP.But can ESP provides message integrity also?

Consider the following statements with respect to IPv6 :S1 : IPv6 packet has field for the header checksum.S2 : It has an explicit extension header for fragmentation.S3 :...

rahul sharma 5

1.3k views

rahul sharma 5 asked Dec 29, 2017

6 votes

4 answers

1518

MadeEasy Test Series: Computer Networks - Network Layering
Consider the following statements with respect to application layer: S1 : Datagram is the PDU (Protocol data unit) used. S2 : There is a fixed limit on the maximum size of data that it can pass on the TCP layer. Which of the following options is ... A Only S1 is true B Only S2 is true C Both S1 and S2 are true D Neither of S1 or S2 is true

Consider the following statements with respect to application layer:S1 : Datagram is the PDU (Protocol data unit) used.S2 : There is a fixed limit on the maximum size of ...

rahul sharma 5

1.8k views

rahul sharma 5 asked Dec 29, 2017

1 votes

1 answer

1519

protocols

Jaspreet Kaur Bains

227 views

Jaspreet Kaur Bains asked Dec 29, 2017

1 votes

0 answers

1520

Is load distributed uniformly?
The answer given is 2 and 3. How 2nd points favor the departure of throughput from the ideal state? Thank you..!!

The answer given is 2 and 3. How 2nd points favor the departure of throughput from the ideal state?Thank you..!!

Hemant Parihar

268 views

Hemant Parihar asked Dec 28, 2017

2 votes

0 answers

1521

Computer network doubt
Assume by transmitting packet using go back 5, every 4th packet is lost .number of Transmission required to transmit 10 packets.......

Assume by transmitting packet using go back 5, every 4th packet is lost .number of Transmission required to transmit 10 packets.......

Surya Dhanraj

477 views

Surya Dhanraj asked Dec 27, 2017

1 votes

0 answers

1522

test series

Akshay Koli 4

245 views

Akshay Koli 4 asked Dec 27, 2017

1 votes

0 answers

1523

Ace Test Series: Computer Networks - Congestion Control

Akshay Koli 4

393 views

Akshay Koli 4 asked Dec 27, 2017

2 votes

0 answers

1524

tcp congestion control
Consider the effect of using slow start on a line with 10 msec round trip time. The receiver window and the size of congestion window are set to 38 KB and 36 KB respectively. Sender side threshold is set to 18 KB. After 8 transmission a time-out occurs, ... send first full window of 18 KB is____________ (in msec). Assume window size at the start of slow start phase is 2 KB.

Consider the effect of using slow start on a line with 10 msec round trip time. The receiver window and the size of congestion window are set to 38 KB and 36 KB respectiv...

Jaspreet Kaur Bains

485 views

Jaspreet Kaur Bains asked Dec 26, 2017

0 votes

1 answer

1525

MadeEasy Test Series: Computer Networks - Routing
Which of the following is TRUE ? S1: Non adaptive algorithms do not take into account the traffic and change in topology S2: Dynamic algorithm reflect their routing and decisions to reflect change in topology S3: link state and flooding are Non adaptive algorithms S4: Shortest path routing is adaptive routing

Which of the following is TRUE ?S1: Non adaptive algorithms do not take into account the traffic and change in topologyS2: Dynamic algorithm reflect their routing and dec...

Kalpataru Bose

1.7k views

Kalpataru Bose asked Dec 26, 2017

0 votes

0 answers

1526

CN :- OSI Model
In OSI model :- 1. Higher layer offer services to lower layer 2. Lower layer offer services to higher layer. Which of th above statements is/are true? a) Only 1 b:) only 2 c:) both 1 and 2 d:) None

In OSI model :-1. Higher layer offer services to lower layer2. Lower layer offer services to higher layer.Which of th above statements is/are true?a) Only 1b:) only 2c:) ...

rahul sharma 5

497 views

rahul sharma 5 asked Dec 25, 2017

0 votes

1 answer

1527

Transmission window size
Assume that TCP congestion window is set to 32KB and a time-out occurs. If next five transmissions are all successful then what will be the new transmission window size? Ans is 18KB or 20KB?

Assume that TCP congestion window is set to 32KB and a time-out occurs. If next five transmissions are all successful then what will be the new transmission window size?A...

Tuhin Dutta

612 views

Tuhin Dutta asked Dec 24, 2017

0 votes

0 answers

1528

Switching
What should be the increasing order of channel Utilization among Circuit Switching , Packet Switching & message Switching (Explain.)

What should be the increasing order of channel Utilization among Circuit Switching , Packet Switching & message Switching (Explain.)

yogi_p

180 views

yogi_p asked Dec 24, 2017

2 votes

1 answer

1529

Go back n
Consider a network connecting two systems, ‘A’ and ‘B’ located 6000 km apart. The propagation speed of media is 2 × 106 mps. It is needed to design a Go-Back-7 sliding window protocol for this network. The average packet size is 107 bits. If network used as its full capacity, then the bandwidth of network is__________ Mbps

Consider a network connecting two systems, ‘A’ and ‘B’ located 6000 km apart. The propagation speed of media is 2 × 106 mps. It is needed to design a Go-Back-7 s...

VS

963 views

VS asked Dec 23, 2017

0 votes

1 answer

1530

How traceroute works?

hem chandra joshi

424 views

hem chandra joshi asked Dec 22, 2017

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