Recent questions tagged osi-model

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1
What are the five layers in the Internet protocol stack? What are the principal responsibilities of each of these layers?
2
Difference between Packet Vs Datagram Vs Frame?
3
what is baud rate exactly? and what does it signifies?
4
Except reliability and connection oriented what are the other functionalities which are produced by TCP but not by UDP?
5
What is the difference between host to host network connection and end to end network connection? Why host to host connection for network layer and end to end connection for transport layer?
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6
Encode / Decode data for physical transmission is done by which layer of OSI reference model?
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7
Do all the TCP segments travel through same path once the connection is established ?
8
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 ?
9
What is meant by the statement "ICMP works at Network Layer"? In general, what is meant by the statement, "x protocol works at y layer"?
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10
Why can a broadcast IP datagram not pass through any router?
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11
What is the difference between broadcasting at Data Link Layer and broadcasting at Network Layer? Broadcasting at Data Link Layer is done via MAC address FF:FF:FF:FF:FF:FF while broadcasting at Network Layer is done using broadcast IP address 255.255.255.255 but they essentially do the same thing, sending a packet to every other node in the network.
1 vote
12
Bridge is the part of which layer? A. Data link layer B. Transport layer C.Both A And B
13
Which of the following layer of OSI Reference model is also called end-to-end layer ? Network layer Datalink layer Session layer Transport layer
14
A conventional $LAN$ bridge specifies only the functions of $OSI$ : layers 1 and 2 layers 1 through 3 all layers none of the above
15
Assertion (A): Twisted pairs are widely used as transmission medium. Reasoning (R): Twisted pairs have adequate performance and low cost. Both (A) and (R) are true and (R) is the correct explanation for (A) Both (A) and (R) are true but (R) is not the correct explanation (A) is true but (R) is false (A) is false but (R) is true
16
Congestion control is done by : Network layer Physical layer Presentation layer Application layer
17
An example of a layer that is absent in broadcast networks is : Physical layer Presentation layer Network layer Application layer
18
Match the following : LIST-I LIST-II a. Session layer i. Virtual terminal software b. Application layer ii. Semantics of the information transmitted c. Presentation layer iii. Flow control d. Transport layer iv. Manage dialogue control Codes : a b c d iv i ii iii i iv ii iii iv i iii ii iv ii i iii
1 vote
19
What services does the internet layer provide ? 1. Quality of service 2. Routing 3. Addressing 4. Connection oriented delivery 5. Framing bits $1, 2, 3$ $2, 3, 4$ $1, 3, 4, 5$ $2, 3, 4, 5$
20
End-to-End connectivity is provided from Last-to-Last in Network layer Session layer Transport layer Data link layer
1 vote
21
An analog signal carries 4 bits in each signal unit. If 1000 signal units are sent per second, then baud rate and bit rate of the signal are _____ and _____ 4000 bauds/sec & 1000 bps 2000 bauds/sec & 1000 bps 1000 bauds/sec & 500 bps 1000 bauds/sec & 4000 bps
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22
Encryption and decryption is the responsibility of ____ Layer Physical Network Application Datalink
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23
When data and acknowledgement are sent in same frame, this is called as Piggy packing Piggy backing Back packing Good packing
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