Recent questions tagged network-layering

0 votes

2 answers

1

Kurose and Ross Edition 6 Exercise 1 Question R25 (Page No 70)
Which layers in the Internet protocol stack does a router process? Which layers does a link-layer switch process? Which layers do a host process?

asked Apr 9 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 106 views

0 votes

1 answer

2

Kurose and Ross Edition 6 Exercise 1 Question R24 (Page No 70)
What is an application-layer message? A transport-layer segment? A network-layer datagram? A link-layer frame?

asked Apr 9 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 47 views

0 votes

0 answers

3

Kurose and Ross Edition 6 Exercise 1 Question R23 (Page No 70)
What are the five layers in the Internet protocol stack? What are the principal responsibilities of each of these layers?

asked Apr 9 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 29 views

0 votes

0 answers

4

Kurose and Ross Edition 6 Exercise 1 Question R22 (Page No 70)
List five tasks that a layer can perform. Is it possible that one (or more) of these tasks could be performed by two (or more) layers?

asked Apr 9 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 15 views

0 votes

2 answers

5

GATEBOOK-2019-CN2-6
A router is emitting out IP packets whose total length (data plus header) is $1024$ bytes.Assuming that packets live for $10$ sec, what is the maximum line speed the router can operate at without danger of cycling through the IP datagram identification number space? $53.6$ Mbps $3.5$ Tbps $5.36$ Mbps $35$ Tbps

asked Oct 28, 2018 in Computer Networks by GATEBOOK Boss (11.4k points) | 337 views

0 votes

1 answer

6

GATEBOOK-2019-CN2-7
Which of the following statement is FALSE about IP protocol ? If an IP datagram using the strict source routing option has to be fragmented then the option is copied into each fragment Routers reassemble IP fragments if the next link can handle the full datagram IPv6 communication across IPv4 networks uses tunneling TTL field can be initialized by other protocols

asked Oct 28, 2018 in Computer Networks by GATEBOOK Boss (11.4k points) | 164 views

+11 votes

4 answers

7

GATE2018-13
Match the following: ... $\text{P-II, Q-I, R-IV, S-III}$ $\text{P-IV, Q-I, R-II, S-III}$ $\text{P-IV, Q-I, R-III, S-II}$

asked Feb 14, 2018 in Computer Networks by gatecse Boss (16.1k points) | 2.2k views

+1 vote

2 answers

8

OSI Model
Network layer is used when data is to be delivered across network. So, for delivering within a network, there is no need for network layer (Ref: Pg-49, Computer Networks, Forouzan, 2 Edition). So in that case will Transport layer directly communicate with Data Link layer ? Or will Network layer be in picture, but do nothing other than simply passing data to Transport layer ?

asked Feb 10, 2018 in Computer Networks by Arunav Khare Loyal (5.4k points) | 289 views

+2 votes

3 answers

9

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

asked Dec 29, 2017 in Computer Networks by rahul sharma 5 Boss (24.7k points) | 180 views

0 votes

0 answers

10

Essential and Optional functionality of each layer in TCP/IP 7-Layer model
Hi Guys, Can anyone please list Essential and Optional functionality of each layer in TCP/IP 7-Layer model ? If some functionality is optional then which other layer/layers could handle that functionality.

asked Dec 18, 2017 in Computer Networks by Chhotu Boss (12.5k points) | 183 views

+1 vote

0 answers

11

Virtual Gate Test Series: Computer Networks - Layers
Match the following layers with their functionality. i. Encryption a. Data-Link Layer ii. Maintaining Synchronization Points b. Network Layer iii. Feedback Messages c. Session Layer iv. Physical Addressing System d. Presentation Layer How Maintain synchronization points is ... session layer? Correct option: $(C) i - d, ii - c, iii - b, iv - a$

asked Nov 12, 2017 in Computer Networks by Na462 Loyal (6.7k points) | 133 views

+1 vote

1 answer

12

Border Gateway Protocol
Why BGP is an application layer Protocol? Ref :- https://en.wikipedia.org/wiki/Border_Gateway_Protocol

asked Oct 3, 2017 in Computer Networks by Shubhanshu Boss (18.1k points) | 419 views

+5 votes

1 answer

13

Fragmentation
Which of the following statements is/ are true about the fragmentation which is done at network layer. (I) The offset of 1st fragment is always offset of parent. (II) The MF of last fragment is always same MF of parent. I think I is true and II is false: Explanation for II :- Host A ... MF = 1 packet 1.3 <20,40> MF = 0 packet 1.3's MF != MF of packet 1 In A-R1. is it correct.

asked Aug 22, 2017 in Computer Networks by Shubhanshu Boss (18.1k points) | 516 views

+4 votes

2 answers

14

Fragmentation
Suppose a network:- Suppose a TCP message contains 492 B of data and TCP header is of size 20B then deliver it to IP. IP header is 20 B. Assume link A-R1 has the maximum frame size of 700 B including a frame size of 14 B, link R1-R2 can support a ... of 256 B including a 12 B frame header. Then calculate the no of fragments at each link and show the format of fragments in each link.

asked Aug 19, 2017 in Computer Networks by Shubhanshu Boss (18.1k points) | 608 views

+3 votes

1 answer

15

Fragmentation Network layer
I got answer 12 is it Right or wrong

asked Jul 6, 2017 in Computer Networks by Nitesh Choudhary Active (2.4k points) | 500 views

+6 votes

3 answers

16

Tanenbaum
A datagram network allows routers to drop packets whenever they need to. The probability of a router discarding a packet is p. Consider the case of a source host connected to the source router, which is connected to the destination router, and then to the destination ... of (a) hops a packet makes per transmission? (b) transmissions a packet makes? (c) hops required per received packet?

asked Apr 7, 2017 in Computer Networks by anonymous | 807 views

+2 votes

1 answer

17

CN:Routing Table using RIP Protocol

asked Apr 6, 2017 in Computer Networks by LavTheRawkstar Active (3.7k points) | 248 views

+2 votes

2 answers

18

Routing Tables Network Layer
Please tell me which interface will be selected for the above IP address

asked Jan 27, 2017 in Computer Networks by Ramakrishna Junior (709 points) | 372 views

+3 votes

1 answer

19

Which device have Exactly one i/p address? (Work Station,Router,Gateway can have more than one i/p)

asked Jan 14, 2017 in Computer Networks by smartmeet Active (4.8k points) | 543 views

0 votes

1 answer

20

MadeEasy Subject Test: Computer Networks - Network Layering

asked Jan 9, 2017 in Computer Networks by debanjan sarkar Active (3.8k points) | 142 views

+6 votes

1 answer

21

Fragmentation Ipv4-Ipv6
True or false - 1. In Ipv4 fragmentation can be done both at Source and intermediate routers. 2. In Ipv6 fragmentation can be done only at Source and not intermediate routers. 3. In both IPv6/4 reassembly is done only at the destination. 4. ... fragmentation done at the Source in Ipv4? Should the 1) be false since segmentation is done and hence fragmentation can be avoided?

asked Dec 31, 2016 in Computer Networks by yg92 Active (3.1k points) | 899 views

+4 votes

2 answers

22

Fragmentation and Total length field value
In this question, After fragmenting at Network2, what will be the total length field values of the 4 fragmented IP packets ?

asked Aug 30, 2016 in Computer Networks by dd Veteran (56.7k points) | 480 views

+1 vote

0 answers

23

Transfering Data and Transmitter Power, is there any idea?
We have one 1-MB file that in 1second moved from 1Mhz channel with 60db Attenuation. if the density of power to noise be -174 dBm/Hz, the transmitter power is equal to 1Micro Watt. My question is how this value be calculated? any idea?

asked Aug 4, 2016 in Computer Networks by DrMhmd (43 points) | 241 views

+7 votes

1 answer

24

UGCNET-Dec2013-III-45
Which layer of OSI reference model is responsible for decomposition of messages and generation of sequence numbers to ensure correct re-composition from end to end of the network? Physical Data-link Transport Application

asked Jul 29, 2016 in Computer Networks by jothee Veteran (99.6k points) | 976 views

+3 votes

2 answers

25

UGCNET-Dec2012-II-17
The design issue of Datalink layer in OSI Reference Model is Framing Representation of bits Synchronization of bits Connection control

asked Jul 8, 2016 in Computer Networks by jothee Veteran (99.6k points) | 1.2k views

+3 votes

2 answers

26

UGCNET-June2012-II-15
Decryption and encryption of data are responsibility of which of the following layer? Physical layer Data link layer Presentation layer Session layer

asked Jul 5, 2016 in Computer Networks by jothee Veteran (99.6k points) | 2.9k views

+4 votes

4 answers

27

UGCNET-June2012-II-6
Both hosts and routers and TCP/IP protocol software. However, routers do not use protocol from all layers. The layer for which the protocol software is not needed by a router is Layer – 5 (Application) Layer – 1 (Physical) Layer – 3 (Internet) Layer – 4 (Network Interface)

asked Jul 4, 2016 in Computer Networks by jothee Veteran (99.6k points) | 1.1k views

+1 vote

3 answers

28

gateforum

asked Jun 28, 2016 in Computer Networks by Shivani Jaiswal (171 points) | 539 views

+13 votes

4 answers

29

ISRO2015-58
Which layers of the OSI reference model are host-to-host layers? Transport, session, presentation, application Session, presentation, application Datalink, transport, presentation, application Physical, datalink, network, transport

asked Jun 20, 2016 in Computer Networks by jothee Veteran (99.6k points) | 4.2k views

+4 votes

4 answers

30

At which layer of OSI Model does a router work?
A .Presentation Layer B .Transport Layer C .Network Layer D .Datalink Layer E .Application Layer F .Physical Layer G .Session Layer

asked Jun 15, 2016 in Computer Networks by Don't you worry Active (1.4k points) | 1.6k views

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