Tuesday, 16 July 2019

Chapter 2. Network Models

Q. 1. Which device operate at Network Layer?
Ans. Router

17 comments:

  1. Roll no:-3801

    1) which function are used application layer?
    ->i)file transfer
    ii) Email
    iii) remote access


    2) what is use of Reverse Address Resolution Protocol (RARP)?
    ->It is use for the mapping of
    physical address to logical address

    3) what is physical address?
    -> i)The address is used by physical
    and data link layer is called as
    physical address
    ii) it is also called as MAC
    address (Medium Access Control).

    ReplyDelete
  2. Roll no :3826
    3841

    Q. 1 list the physical topology
    = there are three topology
    1.mesh
    2.star
    3.ring

    Q. 2 what are the functions of Network layger
    = 1.addressing
    2.Routing
    3.Congestion control.

    Q. 3 which are the network support layer?
    = physical layer, data link layer, network layer are the network support layer

    Q. 4 which are the user support layer?
    = transport layer, session layer, presentation layer, application layer are the user support layer

    Q. 5 list the similarity of TCP/IP and OSI model
    = 1. Both are layered network models.
    2. Both models are based on the concept of an independemt protocol stack.

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  3. NIHIL GUJAR -3912
    AKASH TAKWALE-3939
    PURUSHOTTAM RAMTIRTH-3933

    ********************************

    Q1.What is frames?
    Ans:- The data link later divides the stream of bits received from the network layer into manageable data units called frames.



    Q2. Where the Network layer doesn't needed?
    Ans:- If two streams are connected to same link,there is usually no need for network layer.



    Q3. Presentation layer is responsible for what?
    Ans:- Presentation layer is responsible for translation, compression, encryption.



    Q4.What is Datagrams?
    Ans:- IP(Internetworking Protocol) transports data in packets called Datagrams.



    Q5.RARP Stands for?
    Ans:- RARP stands for Reverse Address Resolution Protocol.



    Q6. What is encryption?
    Ans:- It means that the sender transforms the original information to another form and send the resulting message out over the network.



    Q7.What is range of port address?
    Ans:- Range of Port address is from 0 to 65535.



    Q8.What is Socket address?
    Ans:- Socket address is the combination of an IP address and Port number.

    **************************************

    ReplyDelete
  4. PRASAD ROKADE - 3934
    TANMAY SHILIMKAR - 3937
    PRITI CHAVAN - 3906


    Q1. What is the full form of IGMP and ICMP?
    ANS. IGMP=Internet Group Message Protocol
    ICMP=Internet Control Message Protocol


    Q2. Data is in which format in data link layer?
    ANS.Data is in frame format in data link layer.


    Q3. What is the Use of RAMP?
    ANS. It Is useful to find the logical address from physical address.


    Q4. Which layers are end-to-end communication?
    ANS. i)transport layer
    ii)session layer
    iii)presentation layer
    iv)application layer.


    Q5. In physical layer data is in which format?
    ANS. In physical layer data is in bits format


    Q6. Which layers are host-to-host communication?
    ANS.i)physical layer
    ii)data link layer
    iii)network layer


    Q7. Data is in which format in network layer?
    ANS. In network layer data ia in packets format.


    Q8. Which device is used in network layer?
    ANS. Router is used in network layer.

    Q9.How many layers are there in OSI reference model?
    ANS. there are 7 layers in OSI reference model.

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  5. This comment has been removed by the author.

    ReplyDelete
  6. Roll no :3833
    Name :yogita rajpure


    1)Give four level of addresses are used in internetworking using IP protocol?
    Ans:
    (1)physical address
    (2) logical address
    (3)port address
    (4)specific address


    2)For what physical layer is responsible ?
    Ans:
    It is responsible for transmission of raw data bits over a transmission medium.

    3)for what transport layer is responsible?
    ANS:
    It is responsible for reliable to process delivery of data.

    ReplyDelete
  7. Roll no-3840
    Name -Samruddhi Thorat.
    1)for What Network layer is responsible?
    =The Network layer is responsible for the transfer of data packets form source to destination.

    2)for What the data link layer is responsible?
    =The data link layer is responsible for error-free transmission of frames form One hop to the Next.

    3)What are the services provided by the application layer?
    =a) File transfer
    b) e-mail
    c) remote access

    ReplyDelete
  8. 3832

    1)What are the types of network model?
    ans:1.OSI reference model
    2.TCP/IP refernece model

    2)What are the layers of OSI Model?
    ans:1.physical
    2.data link
    3.network
    4.transport
    5.session
    6.presentation
    7.application

    3)What are the layers of TCP/IP Model?
    ans: 1.host to network
    2.network/internet
    3.transport
    4.application

    ReplyDelete
  9. Rushikesh Kutpelliwar - 3925
    Namrata Zende - 3941
    Shubham Salunke - 3935

    Q1) which devices are operating at physical layer?
    -> Hub, Repeater.

    Q2) What do mean by LLC?
    -> logical link control(LLC), which establishes and maintain link between communicating devices.

    Q3) What do you mean by MAC?
    -> Media Access Contrtol, which control the way multiple devices share the same communication channel.

    Q4) Which are the devices operating at data link layer?
    -> Bridge,Switch.

    Q5) IN data link layer data is in which format?
    -> data in frame format.

    Q6) what do you mean by frame?
    -> string of bits is divided into logical unit called as frame.

    Q7) in networklayer data in which format?
    -> Package format.

    Q8) What are main function of presentation layer?
    -> 1)Translation
    2)Encryption
    3)Compression

    Q9) Define TCP/IP reference model?
    -> It is most widely model for inernetworking,which allows diverse networks to communicate to each others.

    Q10) Define socket address?
    -> The IP address along with the port address is called socket address.

    ReplyDelete
  10. 3920-3936
    Rasika kale -3920
    Muskan shaikh-3936

    Q1.what is the main function of transport layer?
    Ans: process to process delivery.

    Q2.what is the length of IP address?
    Ans: 32 bits.

    Q3.In TCP-IP model the application layer has how many protocols?
    Ans: 4 protocol.

    Q4.what is the full form of ISO-OIS and TCP-IP model?
    Ans: ISO-OSI:International standard organization/open system interconnection reference model.
    TCP-IP: transmission control protocol/internet protocol.

    Q5.what is the full form of UDP?
    Ans: user data gram protocol.

    Q6.what is ARPANET?
    Ans: advance research project agency.

    ReplyDelete
  11. 3806
    3816
    1)
    What is the function to find logical and physical address?
    Ans-RARP(reverse address resolution protocol)

    2)common layers in TCP/IP and OSI model?
    Ans-network, application and transport layer

    3)what is Mac addressed?
    Ans- this address is used by the data link layer and it is also called as physical address.

    4) explain flow control consept?
    Ans-It is ensures that fast sender does not overwhelm a slow receiver.

    5)what is device operating transport layer?
    Ans- It is the gateway.

    ReplyDelete
  12. Nidhi sapra
    3835
    1) what are ephemeral ports?
    =Ports from 49152 to 65535 are neither controlled nor registered. Hence they can be used by any process.these are ephemeral ports.
    2)In TCP/IP, logical IP address is of how many bytes or bits?
    =4 bytes or 32 bits
    3)what MAC stands for?
    =Medium access control

    ReplyDelete
  13. Roll No:-3830
    Name :-Anuradha Oman


    Q1.) What is the length of IP address?
    Ans:- The length of IP address is 32 bit.

    Q2.) What is the main function of the transport layer?
    Ans:- Process-to-process delivery is the main function of the transport layer.


    Q3.) What is peers?
    Ans:- The entities in the same layer on different machines are called peers.

    ReplyDelete
  14. AKSHAY GAIKWAD-3909
    AARATI HANDE-3914

    -----------*************-----------

    Q1.Which Layers perform Error Detection and Recovery Functions?
    Ans:-
    The Data Link layer performs error detection on incoming packets.Networks often use cyclic redundancy check algorithms to find corrupted data at this level.
    The Transport layer handels error recovery. It ultimately ensures data are received in order and free of corruption.


    Q2.In OSI network architecture,the routing is performed by which layer?
    Ans:-
    Network Layer


    Q3.what is the usage of OSI physical layer?
    Ans:-
    The OSI physical layer is used to convert data bits into electrical signals and vice versa.On this layer, network devices and cable types are considered and setup.


    Q4.what are the protocols in application layer?
    Ans:-
    The protocols defined in alplication layer are
    a.TELNET
    b.FTP
    c.SMTP
    d.DNS


    Q5.What is TELNET?
    Ans:-
    TELNET is abbreviation of Terminal Network.
    TELNET is a client-server application that allows a user to log on to a remote machine, giving the user access to the remote system.



    Q6.What is difference between ARP and RARP?
    Ans:-
    The Address Resolution Protocol (ARP) is used to associate the 32 bit IP address with the 48 bit physical address,used by a host or a router to find the physical address of another hpst on its network by sending a ARP query packet that includes the IP address of the receiver.
    The Reverse Address Resolution Protocol (RARP) allows a host to discover its internet address when it knows only its physical address.


    Q7.which layer is responsible for framing?
    Ans:-
    Data Link Layer.
    Data link layer is responsible for physically passing data from one node to another.Translate messages from the upper layers into data frames and adds customized headers containing the hardware destination and source address.

    Q8.what is the difference between network layer delivery and transport layer delivery?
    Ans:-
    The Transport Layer is resopnsible for process-to-process delivery of the entire message,
    Whereas the network Layer overseas host-to-host delivery of individual packets.



    Q9.Which layer links the network support layers and user support layers?
    Ans:-
    The Transport Layer links the network support layers and user support layers.



    Q10.what is the minimum and maximum length of the header in the TCP segment and IP datagram?
    Ans:-
    The header should have a minimum length of 20 bytes and can have a maximun length of 60 bytes.


    -----------*************-------------

    ReplyDelete
  15. Yuvarani kannadiyan.
    Rollno 3818

    Q1.What is the main function of session layer?
    Ans:1)Dialog control.
    2)Synchronization.

    Q2.What is full form of IANA?
    Ans:Internet Assigned Numbers Authority.

    Q3.What are Well-known ports?
    Ans: Well-known ports are ports ranging from 0 to 1023 are assigned and controlled by IANA.

    ReplyDelete
  16. Prachi-3932
    Sarika Nazare-3926



    Q1. Write the two difference between
    TCP/IP and ISO-OSI model.
    Ans.Differences-

    1.OSI has 7 write TCP/IP has four
    layer.
    2.The OSI model make a clear
    distinction between services,
    interfaces and protocol,wherese
    TCP/IP model dose not clearly
    distinguish between them.


    Q2. What is the full from of OSI/TCP?
    Ans.
    OSI- Open System Interconnection.
    TCP- Transmission Control protocol


    Q3. How many levels of address are
    used in an internetwork using
    TCP/IP protocol?
    Ans. Four level-
    1.Physical Address
    2.Logical Address
    3.Port Address
    4.Specific Address


    Q4. What is physical layer?
    Ans. It is concerned with transmitting
    raw bits ever a communication
    channel from one node to the next
    It deals with physical devices
    and components required for data
    communication.


    Q5. What are the main function of
    network layer?
    Ans.
    1.Addresing
    2.Routing
    3.Congestion control



    Q6. What are the main function of
    session layer?
    Ans.
    1. Dialogue control
    2. Synchronization

    ReplyDelete
  17. Saurabh goriwale 3911
    Gokul jaju 3919
    Rushikesh jadhav 3916


    Q give full form of iso and osi?
    ANS
    ISO: INTERNATIONAL STANDARD ORGANIZATION
    OSI: OPEN SYSTEM INTERCONNECTION



    Q give service provided by application layer?
    1 file transfer
    2 E-mail
    3 Remote access.


    What is the user support layers?
    ANS
    The transport, session, presentation and application layers deal with end-to-end communication between unrelated systems.


    Q what are network support layers?
    ANS
    The physical, data link and network layers deal with the physical aspect of transmission data from one machine to another is known as network support layers.



    Q give full form of TCP & UDP?
    ANS
    1 TCP Transmission control protocol
    2 UDP user datagram protocol



    Q what are the ephemeral ports?
    ANS
    Ports from 49,152 to 65,535 are neither controlled nor registered which can be used by any process.


    Q which address is assigned by the vendor?
    ANS
    Physical address is assigned by the vendor.

    ReplyDelete