WAN Q3

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Author:
kirin
ID:
167244
Filename:
WAN Q3
Updated:
2012-08-24 03:35:00
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WAN Quiz
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Description:
Wide Area Network Quiz 3 - Frame Relay
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  1. What is used to identify the path to the next frame-relay switch in a Frame-Relay network?

    A) DLCI
    B) BECN
    C) FECN
    D) CIR
    A) DLCI
    (this multiple choice question has been scrambled)
  2. Why are Frame Relay paths referred to as virtual?

    A) Frame Relay PVCs are created and discarded on demand.
    B) There are no delicated circuits inside the Frame Relay carrier cloud.
    C) There are no delicated circuits to and from the Frame Relay carrier.
    D) The connections between PVC endpoints act like dialup circuits.
    B) There are no delicated circuits inside the Frame Relay carrier cloud
    (this multiple choice question has been scrambled)
  3. Which statement accurately describes the split horizon problem with regards to a multipoint topology?

    A) Split horizon prevent a valid routing update received on one interface to be forwarded out the same interface to the other points.
    B) Split horizon must be disable for all non-IP protocol
    C) Split horizon creates IP routing loops in multipoint domains.
    D) Split horizon does not apply to broadcasts, so it does not protect protocols that use broadcast updates.
    A) Split horizon prevent a valid routing update received on one interface to be forwarded out the same interface to the other points.
    (this multiple choice question has been scrambled)
  4. What are the two reasons Frame Relay is more cost-effective than lease line?
    a) time division multiplexing
    b) shared bandwidth across a large customer base
    c) optimised packet routing
    d) dynamic IP addressing
    e) use less equipment
    • e) use less equipment     
    • b) shared bandwidth across a large customer base
  5. Refer to the diagram. What is placed in the address field of a frame that is sent from the Orlando office to the DC office? 



    A) 192.168.1.26
    B) DLCI 100
    C) MAC address of DC router
    D) MAC address of the Orlando router
    E) 192.168.1.25
    F) DLCI 200
    B) DLCI 100
    (this multiple choice question has been scrambled)
  6. Which situation favors a multipoint topology over point-to-point?

    A) when using routing protocols other than IP
    B) when VLSM cannot be used to conserve addresses
    C) when using a routing protocol that requires broadcast updates
    D) when using a frame mesh topology to save access circuits
    B) when VLSM cannot be used to conserve addresses
    (this multiple choice question has been scrambled)
  7. What is the advantage of configuring subinterfaces in a Frame Relay environment?

    A) reduces split horizon issues
    B) improves flow control and bandwidth usage
    C) make DLCIs globally significant
    D) eliminates the need for using inverse ARP
    A) reduces split horizon issues
    (this multiple choice question has been scrambled)
  8. At which rate does a service provider guarantee to transfer data into the Frame Relay network?

    A) data transfer rate
    B) committed information rate
    C) baud rate
    D) timing rate
    B) committed information rate
    (this multiple choice question has been scrambled)
  9. How are DLCI numbers assigned?

    A) They are assigned arbitrarily by the user.
    B) They are assigned by a DLCI server.
    C) They are assigned by the Frame Relay service provider.
    D) They are assigned based on the host IP address.
    C) They are assigned by the Frame Relay service provider.
    (this multiple choice question has been scrambled)
  10. A router can reach multiple networks through a Frame Relay interface. How does the router know which DLCI to assign to the IP address of the destination network?

    A) It consults the Frame Relay map.
    B) It consult the routing table to find the DLCI.
    C) It uses Frame Relay switching tables to map DLCIs to IP addresses.
    D) It uses RARP to find the IP address of the corresponding DLCI.
    A) It consults the Frame Relay map.
    (this multiple choice question has been scrambled)
  11. Match the term to the associated definition.

    Terms:
    CIR 
    DE
    FECN
    BECN

    Definition:
    rate at which the service provider agrees to accept bits on the VC
    a bit that marks the frame to be dropped when congestion is present
    a bit that is set on every frame that a switch received on a congested link
    a bit that is set on every frame that a switch places on a congested link
    CIR => rate at which the service provider agrees to accept bits on the VC

    DE => a bit that marks the frame to be dropped when congestion is present

    FECN => a bit that is set on every frame that a switch received on a congested link

    BECN => a bit that is set on every frame that a switch places on a congested link

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