computer network

1. 1check the right statements about OSI?

   1. Ait stands for Open Systems Interconnection
   2. Bit is a nice computer brand
   3. Chas seven layers
   4. Dstarted in 1983 by ITU and then in 1984 presented as layered model by ISO
   5. Eit is a standard related to the H.W in computer network
2. 2in OSI model SAP is between layers in the same systems and protocol is between peer layers in different systems?

   1. AVerdadero
   2. BFalso
3. 3in the case of transmitting data which comes first packet or frame ?

   1. Apacket
   2. Bframe
4. 4in OSI model PDU = PCI + SDU ?

   1. AVerdadero
   2. BFalso
5. 5the lower four layers of OSI model called ~~oriented layers ?

   1. Atransmission
   2. Btracking
   3. Ctelecommunication
   4. Dtransport
   5. Etechnical
6. 6the higher three layers of OSI model is called ~~oriented layers

   1. Aprogramming
   2. Bapplication
   3. Cprocessing
   4. Dsoftware
7. 7you can have time, frequency, space, code~~

   1. Aadding
   2. Bdivision multiplexing
   3. Cprocess multiplexing
   4. Dforward multiplexing
8. 8MAC address is temporary ?

   1. AVerdadero
   2. BFalso
9. 9the different between ISO model and Hybrid model is that the upper three layers treated as one layer in Hybrid model and called S.W layers

   1. AVerdadero
   2. BFalso
10. 10the number of layers in internet model is

    1. Afour layers (app. transport, internet IP, subnetwork)
    2. Bfour layers (app. transmission , internet IP, subnetwork)
    3. Cthree layers (app. transport, internet IP)
    4. Dfive layers (app. transport, internet IP, data link, physical)

11. 11IP, TCP, UDP protocols are the basis of the internet

    1. AVerdadero
    2. BFalso
12. 12Bandwidth is the capacity to carry --

    1. Afood
    2. Binformation
    3. Ccars
    4. Dheat
    5. Epeople
13. 13bandwidth could be divided into --

    1. Asub bandwidth
    2. Bchannels
    3. Cnetwork
    4. Dhouses
14. 14which are the correct sentences ?

    1. Arepeater and hub cover only layer one in
       osi model
    2. Bbridges and switches cover layers one and two in OSI model
    3. Cgateway could cover all layers in OSI model
    4. Drouter covers layer four only
    5. Erouter covers layers from 3 to 1
    6. Fmodem covers layers 5 and 6
15. 15Bit rate could be higher than Baud rate if No. of signal levels ( V ) is higher than 3

    1. AVerdadero
    2. BFalso
16. 16data encoding techniques for Analog signal of Digital single are --- shifting key

    1. Aamplitude, time, space
    2. Bamplitude, frequency, speed
    3. Camplitude, frequency, phase
    4. Dtime, distance, speed
17. 17data encoding techniques for Analog signal of Analog single are

    1. AAM, FM, PM
    2. BGM, FM, CM
    3. CVM, TM, AM
18. 18data encoding techniques for Digital signal of Digital single are:

    1. Amanchester, Nonretuern-to-zero level , Nonretuern-to-zero, invert on ones
    2. BAM
    3. Ctime modulation
    4. DFM
    5. ENonretuern-to-zero, invert on ones
19. 19data encoding techniques for Digital signal of Analog single are:

    1. Apuls code modulation PCM
    2. Bamplitude code modulation
    3. Cfrequency code modulation
20. 20propagation effect includes the following items

    1. Anoise
    2. Battenuation
    3. Cfiltering
    4. Dmodulation
    5. Edistortion
    6. Finterface
21. 21digital signal could be compressed but it can't be re-teansmitted

    1. AVerdadero
    2. BFalso
22. 22with IP address there is another term

    1. Asubnet mask
    2. Btiger mask
    3. Cinternet mask
    4. Dapplication mask
23. 23in multiplexing is used we look for either parallel access or

    1. Ashifted access
    2. Bavoid accidents between signals
    3. CTry to make accidents between signals impossible
    4. Dtime access
24. 24there are always two IP addresses reserved to network IP and Broadcast

    1. AVerdadero
    2. BFalso
25. 25as an analogy if the multiplexing tech, was the car, what is the operation mode?

    1. Agasoline
    2. Bwheels
    3. CAT or MT
26. 26The four techniques of multiplexing have be used exclusively

    1. AVerdadero
    2. BFalso

Descripción

Test sobre computer network, creado por hattan altiyare el 08/12/2017.

Autor

hattan altiyare

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English

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