CH 3 Ethernet LANs Exam

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Author:
bmajik
ID:
211705
Filename:
CH 3 Ethernet LANs Exam
Updated:
2013-04-06 17:51:18
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ETHERNET LANS
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Description:
ETHERNET LANS-mod 3
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  1. What does NIC stand for?
    Network interface control.
    Network interface card. 
    National Institute for Communications.
    Network interface carrier.
    Network interface connector.
    Network interface card.
  2. Which of the following best
    describes the function of a MAC layer address?
    Identifies the network and host addresses of the destination node.
    Identifies the network and host addresses of the source node.
    Identifies the logical network to which the frame is addressed.
    Identifies the physical application to which the frame is addressed.
    Identifies the physical node (NIC) to which the frame is addressed.
    Identifies the physical node (NIC) to which the frame is addressed.
  3. How does IEEE 802.3 frame
    format differ from Ethernet version 2 frame format?
    Length of the frame.
    Length of the fields in frame.
    Length of the padding.
    Type field is replaced with Length field.
    Length of the cable.
    Length of the padding.
  4. What is the maximum length of a Fast Ethernet UTP segment?
    100 m 
    1,000 m
    10 km
    200 m
    1,000 km
    100 m
  5. Which component must be upgraded to support Fast Ethernet? Cable terminators.
    The standard Ethernet NICs.
    The workstations.
    The category 5 UTP cabling. 
    The Ethernet frame format.
    The standard Ethernet NICs
  6. What is the most widely installed LAN technology?
    Ethernet. 
    Token Ring.
    LocalTalk.
    FDDI.
    ARCnet.
    Ethernet
  7. How many copper pairs are used on a category 5 UTP for 1000BaseT?
    Two-pair.
    Three-pair.
    Four-pair. 
    Five-pair.
    Six-pair.
    Four-pair
  8. What is the maximum length of a 10GBase-T using category 7 STP?
    55 m
    15 m
    75 m
    10 m
    100 m
    100 m
  9. With what SONET standard is 10GBase-EW/LW/SW compatible?
    OC-12
    OC-48
    OC-192 
    OC-12
    OC-3
    OC-192
  10. How are store-and-forward switches different from cut-through switches?

    Cut-through switches work at Layer 1, but store-and-forward switches work at Layer 2.

    Store-and-forward switches are more accurate, but cut-through switches are faster.

    Cut-through switches forward one frame at a time, but store-and-forward switches move frames in large batches.

    Store-and-forward switches are faster, but cut-through switches are more accurate.

    Cut-through switches look at only the first 64 bytes of a frame before forwarding the frame, but store-forward looks at the complete frame before forwarding the frame.
    Store-and-forward switches are more accurate, but cut-through switches are faster.

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