Describe effective troubleshooting methods to resolve issues in complex IP telephony networks

Questions derived from the 642-425 – IP Telephony Troubleshooting Exam Cisco Self-Test Software Practice Test.


Objective: Describe effective troubleshooting methods to resolve issues in complex IP telephony networks
SubObjective: Perform a baseline analysis and document existing infrastructure using Cisco-recommended methodologies


Item Number: 642-425.1.2.2
Multiple Answer, Multiple Choice


Which of the following must be considered to ensure proper documentation of the network topology? (Choose two.)



  1. Information about all the Cisco CallManagers
  2. A diagram of the entire network
  3. Information on all the network devices and major components along with the port/interface numbers to which they are connected
  4. Information about the WAN circuits and the amount of bandwidth
  5. Information about the routing protocols implemented in the network

Answer:
C. Information on all the network devices and major components along with the port/interface numbers to which they are connected
D. Information about the WAN circuits and the amount of bandwidth


Tutorial:
To ensure proper documentation of the network topology, the following should be considered:



  • Information on all the network devices and major components along with the port/interface numbers to which they are connected. If they belong to a VLAN, that information should also be included.
  • Identification of the root of the spanning-tree along with all normally blocking ports.
  • Information about the WAN circuits and also the amount of bandwidth.
  • All other options are incorrect because these are not required to ensure proper documentation of the network topology.

Reference:
http://cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080129d92.shtml#prereq

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