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2014-06-02 20:50:21

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    • author "me"
    • tags ""
    • folders ""
    • description ""
    • fileName "block5.6"
    • what is a broadcast storm
    • is the endless flooding of a broadcast frame by switches in the network
  1. what is the IEEE specification for spanning tree protocol
    IEEE 802.1d
  2. what is the purpose of spanning tree protocol
    provides networks the ability to run a loop-free redundant topology
  3. what does BPDU stand for
    bridge protocol data unit
  4. what are the four port states available when dealing with spanning tree protocol
    • blocking
    • listening
    • learning
    • forwarding
  5. what does STP stand for
    spanning tree protocol
  6. what does RSTP stand for
    rapid spanning tree protocol
  7. what happens if a BPDU is not received within the 20 second MAXAGE time,
    the device identifies that the topology has changed and a Spanning Tree Recalculation must be performed.
  8. what does TCA stand for
    Topology Change Acknowledgment
  9. what does TC stand for
    Topology Change
  10. what configuration messages does RSTP use to allow rapid failure detection and fast re-convergence time
  11. what does VLAN stand for
    virtual local area network
  12. what is the purpose of VLAN
    it enables network adminstators to group user together into common broadcast domains regardless of their physical location on the network
  13. how many VLANs can a port on a switch belong to at the same time
    only one
  14. what are three types of VLAN memberships
    • MAC-based VLAN membership
    • protocol-based VLAN membership
    • authentication-based VLAN membership
  15. what is the IEEE specification for VLANs and VLAN trunking
    IEEE 802.1q
  16. what is the process of "trunking"
    a method of carrying multiple VLANs across one connection is accomplished through a process
  17. what is the minimum bandwidth required to support a trunk
    fast ethernet
  18. what device can be used to provide inter-VLAN communication
  19. what devices can only be used with VLAN tagging
    switches, routers, and special purpose NICs.
  20. what is VLAN tagging
    When data is received on a port that is assigned to a VLAN, the switch applies a tag that identifies which VLAN the traffic originated from.
  21. what is authentication-based VLAN membership
    it uses the most common form of authentication is a user ID and password to determine which VLAN the member is assigned to
  22. what is MAC-base VLAN membership
    The network administrator essentially creates a table that defines which MAC addresses belong with what VLAN.
  23. what is port-based VLAN membership
    VLANs are assigned on a per-port basis.
  24. what are three types of casts used at layer 3
    • unicast
    • broadcast
    • multicast
  25. what will the destination IP address of a layer 3 multicast be
    class D
  26. what must the router know in order to route packets to the destination network
    • know the location of the destination network
    • know where to route data in the event the destination network is unknown
  27. where does a router store information regarding the existence of networks and their locations
    routing table in the router's memory
  28. what networks does a router intrinsically know
    directly connected networks
  29. what are the two ways a router can learn about the existence of networks
    • statically
    • dynamically
  30. what is a static route
    are administatively defined routes that specify the explicit path that packets must take while moving between a source and destination device
  31. what are static routes commonly used for
    • stub networks
    • gateway of last resort
  32. what is an administrative distance
    if there are several routing sources providing common routing information, an "administrative distance" value is used to rate the trustworthiness of each routing source
  33. what are the three primary classes of dynamic routing protocols
    • distance vector
    • link-state
    • balanced hybrid
  34. list eight common metrics used by routing protocols
    • hop count
    • ticks
    • cost
    • bandwidth
    • delay
    • load
    • reliability
    • MTU
  35. what is "routing by rumor"
    route selection process
  36. what is routing
    Routing is the process by which a packet moves from a source network to the destination network.
  37. what is stub network
    A stub network is a network accessed by a single route.
  38. the assignment of a gateway of last resort is a special form of static route assignment is called a
    “default route”.
  39. what does RIP stand for
    Routing Information Protocol (RIP)
  40. what does OSPF stand for
    Open Shortest Path First (OSPF)
  41. what does IS-IS stand for
    Intermediate System to Intermediate System (IS-IS)
  42. what does IGRP stand for
    Interior Gateway Routing Protocol (IGRP)
  43. what does EIGRP stand for
    Enhanced Interior Gateway Routing Protocol (EIGRP)
  44. what does BGP stand for
    Border Gateway Protocol (BGP)
  45. what are common routing protocols
    • Routing Information Protocol (RIP)
    • Open Shortest Path First (OSPF)
    • Intermediate System to Intermediate System
    • (IS-IS) Interior Gateway Routing Protocol (IGRP)
    • Enhanced Interior Gateway Routing Protocol (EIGRP)
    • NetWare Link State Protocol (NLSP)
    • Border Gateway Protocol (BGP)
  46. what is sthe distance vector
    Determines the distance and direction (vector) to any link in the internetwork.

    • RIP
    • IGRP
  47. link-state
    Recreates the exact topology of the entire internetwork for route computation.

    • OSPF
    • NLSP
  48. what is a balaced hybrid
    Combines aspects of the distance vector and link state routing protocols.