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Recent questions tagged network-layer

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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?

kalamar asked in Computer Networks Jan 3

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Can anyone provide a list of frequently asked protocols wrt various layers of OSI model, or an authentic source from where I can get the list for the same.

tishhaagrawal asked in Computer Networks Dec 12, 2023

by tishhaagrawal

154 views

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1 answer

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Testbook CN question
Which of the following statement is/are incorrect about the Routing Information Protocol (RIP) protocol and Open Shortest Path First (OSPF) protocol? RIP packets are sent using TCP. OSPF packets are sent using TCP. RIP is an Network Layer protocol OSPF is an Application Layer protocol

Sahil_Lather asked in Computer Networks Jan 26, 2023

by Sahil_Lather

500 views

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1 answer

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TestBook Website
Assume that host A and host C are connected through intermediate bridge and router labeled B and R respectively. Determine how many times each frame has to visit the network layer, data link layer and physical layer during a transmission from A to C. 1 Network Layer - 4, Data ... 3, Data Link Layer - 3, Physical Layer - 4 4 Network Layer - 4, Data Link Layer - 4, Physical Layer - 5

Sahil_Lather asked in Computer Networks Jan 26, 2023

by Sahil_Lather

431 views

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network layer
Which of following is false in case of ICMP protocol? and why? A Parameter problem message is transmitted by ICMP, when a router is congested.. B When noise has modified some IP header bits, then calculated IP header checksum will not be equal to received ... quench message will be transmitted C No ICMP error message will be transmitted for the loop back address packet, if it is lost.

someshawasthi asked in Computer Networks Jan 7, 2023

by someshawasthi

499 views

1 vote

2 answers

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#ACE acedmy test series
In a host size for PDU of network layer is 17076 bytes, MTU size for that network is 200 bytes and IPv4 header size is 20 bytes .find number of IP fragments

amit166 asked in Computer Networks Jan 5, 2023

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#selfDoubt
Are IP addresses, MTU, and MSS associated with the device or the link incorporated for the transmission over the Network or the Network Interface?

robinofautumn asked in Computer Networks Nov 10, 2022

by robinofautumn

262 views

2 votes

1 answer

8

doubt.
What is the difference between frame & fragmented packet?

Nisha Bharti asked in Computer Networks Sep 30, 2022

by Nisha Bharti

682 views

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2 answers

9

MadeEasy Workbook question.

Nisha Bharti asked in Computer Networks Sep 20, 2022

by Nisha Bharti

518 views

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2 answers

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Self Doubt
What is the difference between Node-to-node delivery, Host-to-host delivery & Process-to-process delivery?

Nisha Bharti asked in Computer Networks Sep 14, 2022

by Nisha Bharti

721 views

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1 answer

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CSE EXAM 2022
Solve it. Help me.

rsansiya111 asked in Computer Networks Feb 12, 2022

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Made-Easy Test Series
Consider source X and destination Z is connected through an intermediate network Y. X sends a message of 260 bytes of application data to Z. TCP layer at source X prefixes 40 byte header to the message and then IP layer attach 40 byte header. Data link ... are correctly delivered. (Consider 40 bytes IP header at each network). a)400 bytes b)384 bytes c)360 bytes d)424 bytes

webron9 asked in Computer Networks Dec 25, 2021

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6 answers

13

confusion -- computer networks
Do we actually need ip and Mac addresses both at same time for the computer for communication? Why we not use Mac instead of ip address since Mac is also the unique address globally? Why we not use ip instead of Mac Since both are unique but why we use both for computer networkws?

ykrishnay asked in Computer Networks Dec 19, 2021

663 views

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1 answer

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Applied Mock Test
The packet is sent from source to router with the link having the maximum transmission unit (MTU) as 480 bytes, the header is of size 20 bytes. The intermediate fragment size is X and the last fragment size is Y when the packet size is of 2000 bytes including the header. Calculate the value of X+Y in bytes?

LRU asked in Computer Networks Dec 18, 2021

by LRU

502 views

1 vote

1 answer

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Applied Mock Test
Consider an IP packet with a length of 2000 bytes which includes a 20-byte header . The packet is forwarded to an IPv4 router that supports a Maximum Transmission Unit (MTU) of 400 bytes. Assume that the length of the IP header in all the outgoing fragments of this packet is 20 bytes. The fragmentation offset value stored in the third fragment is _______.

LRU asked in Computer Networks Dec 18, 2021

by LRU

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1 answer

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Applied Test Series
A router with MTU of 1024 bytes has received an IP packet of size 4240 bytes with an IP header of 20 bytes. The value of MF and offset of the 3rd fragment is ________

LRU asked in Computer Networks Nov 11, 2021

by LRU

651 views

3 votes

1 answer

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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

1 vote

2 answers

18

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

916 views

1 vote

1 answer

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Applied Test Series
The packet is sent from source to router with the link having the maximum transmission unit (MTU) as 480 bytes, the header is of size 20 bytes. The intermediate fragment size is X and the last fragment size is Y when the packet size is of 2000 bytes including the header. Calculate the value of X+Y in bytes?

LRU asked in Computer Networks Oct 4, 2021

by LRU

892 views

0 votes

1 answer

20

Applied Test Series
Suppose a router receives an IP packet containing 600 data bytes and has to forward the packet to a network with a maximum transmission unit of 200 bytes. Assume that the IP header is 20 bytes long. What will be the fragment offset of the third fragment ?

LRU asked in Computer Networks Oct 4, 2021

by LRU

668 views

0 votes

1 answer

21

Applied Test Series
A PC has just booted up and wants to communicate with a host on a remote subnet. The PC knows the IP addresses of its default gateway and the remote host. However, in order to properly construct a frame, the PC needs an appropriate destination MAC address. What MAC address does the PC need to learn, and what protocol will the PC use to learn that MAC address?

LRU asked in Computer Networks Oct 4, 2021

by LRU

931 views

1 vote

0 answers

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Network Layer - Computer Networks - Tanenbaum
The question states - An IP datagram using Strict source routing option has to be fragmented. Do you think the option is copied into each fragment, or is it sufficient to just put it in the first fragment? Explain your answer. My thinking ... every fragment. I doubt this reasoning and don't see any flaws in my own answer. Where is my answer lacking?

atulcse asked in Computer Networks Sep 16, 2021

468 views

1 vote

1 answer

23

NIELIT 2017 DEC Scientific Assistant A - Section B: 33
Which layer connects the network support layers and user support layers ? transport layer network layer data link layer session layer

admin asked in Computer Networks Mar 31, 2020

by admin

912 views

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2 answers

24

NIELIT 2016 MAR Scientist B - Section C: 54
Which of the following is not a transceiver function? Transmission and receipt of data Checking of line voltages Addition and subtraction of headers Collision detection

admin asked in Computer Networks Mar 31, 2020

by admin

897 views

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1 answer

25

Kurose and Ross Edition 6 Exercise 1 Question P27 (Page No 76)
Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 1Gbps. Suppose the propagation speed over the link is $ 2.5 10^8$ ... bits that will be in the link at any given time? What is the width (in meters) of a bit in the link?

ajaysoni1924 asked in Computer Networks Apr 10, 2019

by ajaysoni1924

3.2k views

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Kurose and Ross Edition 6 Exercise 1 Question P26 (Page No 76)
Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 2 Mbps. Suppose the propagation speed over the link is 2.5×1082.5×108 meters/sec. suppose we can modify R. For what value of R is the width of a bit as long as the length of the link?

ajaysoni1924 asked in Computer Networks Apr 10, 2019

by ajaysoni1924

376 views

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Kurose and Ross Edition 6 Exercise 1 Question P25 (Page No 76)
.Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 2 Mbps. Suppose the propagation speed over the link is $2.5 \times 10^8$ meters/sec. Calculate the bandwidth-delay ... width of a bit in terms of the propagation speed s, the transmission rate R, and the length of the link m.

ajaysoni1924 asked in Computer Networks Apr 10, 2019

by ajaysoni1924

630 views

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28

Kurose and Ross Edition 6 Exercise 1 Question P13 (Page No 73)
Suppose N packets arrive simultaneously to a link at which no packets are currently being transmitted or queued. Each packet is of length L and the link has transmission rate R. What is the average queuing delay for the N packets? ... N such packets arrive to the link every LN/R seconds. What is the average queuing delay of a packet?

ajaysoni1924 asked in Computer Networks Apr 10, 2019

by ajaysoni1924

407 views

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1 answer

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Kurose and Ross Edition 6 Exercise 1 Question P12 (Page No 73)
A packet switch receives a packet and determines the outbound link to which the packet should be forwarded. When the packet arrives, one other packet is halfway done being transmitted on this outbound link and four other ... bits of the currently-being-transmitted packet have been transmitted, and n packets are already in the queue?

ajaysoni1924 asked in Computer Networks Apr 10, 2019

by ajaysoni1924

3.5k views

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Recent questions tagged network-layer