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Introduction | 640-802 CCNA Dumps Questions Answers (640-802) By Acme Infotek

Written By Unknown on Tuesday 14 February 2012 | 07:20

Question 1. -    Which of the following correctly describe steps in the OSI data encapsulation process ? (Choose two.)

Options : -
A.    The transport layer divides a data stream into segments and may add reliability and flow control information.
B.    The data link layer adds physical source and destination addresses and an FCS to the segment.
C.    Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.
D.    Packets are created when the network layer adds layer 3 addresses and control information to a segment.
E.    The presentation layer translates bits into voltages for transmission across the physical link.

Answer :-    A, D

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Question 2.-    Which two Ethernet fiber-optic modes support distances of greater than 550 meters?

Options : -
A.    1000BASE-CX 
B.    100BASE-FX 
C.    1000BASE-LX 
D.    1000BASE-SX 
E.    1000BASE-ZX

Answer :-    C, E.

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Question 3.-    Refer to the exhibit. two buildings on the San Jose campus of a small company must be connected to use Ethernet with a bandwidth of at least 100 Mbps. The company is concerned about possible problems from voltage potential difference between the two buildings. Which media type should be used for the connection ? 


Options : -
A.    UTP cable 
B.    STP cable 
C.    Coaxial cable  
D.    Fiber optic cable

Answer :-    D.

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Question 4.-    Which two benefit are provided by using a hierarchical addressing network addressing scheme? (Choose two)

Options : -

A.    Reduces routing table entries. 
B.    Auto-negotiating of media rates. 
C.    Efficient utilization of MAC addresses.
D.    Dedicated communications between devices.
E.    Ease of management and troubleshooting.


Answer :-    A, E.

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Question 5.-    When a host transmits data across a network to another host, which process does the data go through?


Options : -
A.    Standardization.
B.    Conversion.
C.    Encapsulation.
E.    Synchronization.


Answer :-    C.

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Question 6.-    which of the following statements describe the network shown in the graphic? (Choose two.)

Options : -
A.    There are two broadcast domains in the network. 
B.    There are four broadcast domains in the network. 
C.    There are six broadcast domains in the network.
D.    There re four collision domains in the network. 
E.    There are five collision domains in the network. 
F.    There are seven collision domains in the network.



Answer :-    F.

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Question 7.-    Which two topologies are using the correct type of twisted-pair cables? (choose two.)


Options : - 

A.  

B.  

C.  

D.  

E.  

    

Answer :-    D, E.

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Question 8.-    A network administrator is verifying the configuration of a newly installed host by establishing an FTP connection to a remote server. What is the highest layer of the protocol stack that the network administrator is using for this operation?


Options : -
A.    Application. 
B.    Presentation. 
C.    Session. 
D.    Transport. 
E.    Internet. 
F.    Data Link.

Answer :-    A.

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Question 9.-    Acknowledgement, Sequencing, and Flow control are characteristics of which OSI layer?


Options : -
A.    Layer 2 
B.    Layer 3 
C.    Layer 4 
D.    Layer 5 
E.    Layer 6 
F.     Layer 7


Answer :-    C.

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Question 10.-    A network interface port has colllision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?

Options : - 
A.    This is a 10Mb/sswitch port.
B.    This is a 100Mb/s switch port.
C.    This is an Ethernet port operating at half duplex.
D.    This is an Ethernet port operating at full duplex.
E.    This is a port on a network interface card in a PC.

Answer :-    C.

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Question 11.-    Which layer of the OSI reference model uses the hardware address of a device to ensure message delivery to the proper host on a LAN?

 Options : - 
A.    Physical.
B.    Data Link.
C.    Network.
D.    Transport.

Answer :-    B.

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Question 12.-    What is the first 24 bits in a MAC address called?

Options : - 
A.    NIC.
B.    BIA.
C.    OUI.
D.    VAI.


Answer :-    C.

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Question 13.-    Refer to the exhibit. What type of connection would be supported by the cable diagram shown?
Options : - 

A.    PC to Router.
B.    PC to Switch.
C.    Server to Router.
D.    Router to Router

Answer :-    B.

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Question 14.-    For which type of connection should a straight-through cable be used?

Options : - 

A.    Switch to Switch.
B.    Switch to Hub.
C.    Switch to Router.
D.    Hub to Hub.
E.    Router to PC.

Answer :-    B.

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Question 15.-    Data transfer is slow between the source and destination. the quality of service requested by the transport layer in the OSI reference model is not being maintained. To fix this issue, at whichlayer should the troubleshooting process begin?

Options : - 

A.    Presentation.
B.    Session.
C.    Transport.
D.    Network.
E.    Physical.

Answer :-    D.

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Question 16.-    In an ethernet network, under what two scenarios can devices transmit? (Choose two.)

 Options : - 

A.    When they receive a special token.
B.    When there is a carrier.
C.    When they detect no other devices are sending.
D.    When the medium is idle.
E.    When the server grants access.


Answer :-    C, D.

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Question 17.-    Refer to the exhibit. What type of connection would be supported by the cable diagram shown?

Options : - 

A.    PC to Router.
B.    PC to Switch.
C.    Server to Switch.
D.    Switch to Router.

Answer :-    A.

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Question 18.-    For what two purpose does the ethernet protocol use physical addresses? (Choose two.)

Options : - 

A.    To uniquely identify devices at layer 2. 
B.    To allow communication with devices on a different network. 
C.    To different a layer 2 frame from a Layer 3 packet. 
D.    To establish a priority system to determine which device gets to transmit first. 
E.    To allow communication between different devices on the same network. 
F.    To allow detection of a remote device when its physical address is unknown.



Answer :-    A, E.

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Question 19.-    Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication?

 Options : - 

A.    Transport.
B.    Network.
C.    Presentation.
D.    Session.
E.    Application.

Answer :-     E.

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Question 20.-    What are two advantages of Layer 2 Ethernet switches over hubs? (Choose two.)

 Options : - 

A.    Decreasing the number of collision domains.
B.    Filtering frames based on MAC addresses.
C.    Allowing simultaneous frame transmissions.
D.    Increasing the size of broadcast domains.
E.    Increasing the maximum length of UTP cabling between devices.

Answer :-     B, C.

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Question 21.-    Which protocols are found in the network layer of the OSI reference model and are responsible for path determination and traffic switching?

 Options : - 

A.    LAN.
B.    Routing.
C.    WAN.
D.    Network.

Answer :-     B.

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Question 22.-    What are some of the advantages of using a router to segment the network? (Choose Two.)

 Options : - 

A.    Filtering can occur based on Layer 3 information.
B.    Broadcast are eliminated.
C.    Routergenerally cost less than switches.
D.    Broadcast are not forwarded across the router.
E.    Adding a router to the network decreases latency.


Answer :-     A, D.

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Question 23.-    Which layer of the OSI reference model uses flow control, sequencing and acknowledgements to ensure that reliable networking occurs?

 Options : - 

A.    Data Link.
B.    Network.
C.    Transport.
D.    Presentation.
E.    Physical.


Answer :-     C.

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