Model Question_6 for IT Jobs(network)

1
   Question    What is the binary value of hex BF?
   1.    10111111
   2.    00111011
   3.    10100000
   4.    11111000
   5.    All of above
   Answer. 1

2
   Question   How many bearer (B) and data (D) channels are there in a standard ISDN BRI service?
   1.    2B + 1D channel
   2.   16B + 1D channel
   3.    23B + 1D channel
   4.    24B + 2D channels
   5.    26B + 3D channels
   Answer. 1

3
   Question    According to the OSI model which layer is responsible for routing?
   1.     Data Link
   2.    Presentation
   3.     Network
   4.    Session
   5.    None of above
   Answer. 3

4
   Question     At which layer of the OSI model does FTP operate?
   1.     Presentation
   2.     Session
   3.     Application
   4.     Transport
   5.     All of above
   Answer. 3

5
   Question     What is the purpose of twisting the pairs of cables together in a UTP cable?
   1.   To reduce attenuation
   2.    To reduce Electro-Magnetic Interference
   3.    To reduce noise
   4.    To reduce cross talk
   5.    None of above
   Answer. 4

Answer
   Question   What is the IEEE 802.2 standard related to?
   1.     Token Ring
   2.    Ethernet
   3.    Token Bus
   4.    Definition of the Logical Link Control (LLC) sublayer
   5.     All of above
   Answer. 4

7
   Question    Which layer is broken down into the MAC and LLC sublayers?
   1.    Network
   2.    Session
   3.    Physical
   4.    Data Link
   5.    None of above
   Answer. 4

8
   Question   According to the OSI model which layer addresses the issues of communication media and cable connectors etc?
   1.    Network
   2.    Data Link
   3.    Transport
   4.    Physical
   5.     All of above
   Answer. 4

9
   Question   At which layer of the OSI model does SMTP (Simple Mail Transfer Protocol) operate?
   1.    Transport
   2.    Presentation
   3.    Session
   4.    Application
   5.    None of above
   Answer. 4

10
   Question   What do you call a medium which only allows a single channel?
   1.    Multi mode
   2.    Baseband
   3.    Broadband
   4.    Single mode
   5.    All of above
   Answer. 2