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Review Questions

Note that more than one correct answer might be valid for multiple-choice questions.

  1. True or False: CEF-based MLS Catalyst switches use the Layer 3 engine to route the first packet and build flows based in hardware for subsequent packets.
  2. True or False: The performance of a Catalyst switch using distributed switching is the aggregate of all forwarding engines.
  3. In CEF-based multilayer switching, which type of adjacency entry is used for features that require special handling or for features that are not yet supported in conjunction with CEF hardware-switching paths?
    1. Glean adjacency
    2. Punt adjacency
    3. Drop adjacency
    4. Default adjacency
  4. Which statement describes a TCAM mask associated with the entry access-list 101 deny ip 10.1.0.0 0.0.255.255?
    1. All 32 bits of source address
    2. Most significant 8 bits of source address
    3. Most significant 16 bits of source address
    4. Most significant 24 bits of source address
  5. When troubleshooting CEF-based MLS for issues such as being unable to reach a certain IP destination, what two tables need to be verified as a first step in troubleshooting?
    1. The IP routing table and the IP route-cache table
    2. The IP routing table and the CEF adjacency table
    3. The IP CEF FIB table and the adjacency table in TCAM
    4. The IP routing table and the ARP table
  6. Which of the following statements is true with regard to CEF-based MLS?
    1. CEF-based MLS Catalyst switches use the IP CEF FIB and adjacency tables to build FIB and adjacency tables in TCAM for hardware switching.
    2. CEF-based MLS Catalyst switches use the IP routing and IP ARP tables to build FIB and adjacency tables in TCAM for software switching.
    3. CEF-based MLS Catalyst switches use the IP CEF FIB and adjacency tables to build MLS flows on-demand in TCAM for hardware switching.
  7. Describe the steps a multilayer switched packet takes when using CEF-based MLS.
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