Cisco 642-437 Online Practice Questions and Exam Preparation

Cisco 642-437 Online Questions & Answers

• Question 31:

  Refer to the exhibit.

  

  What happens when users at Site B place calls to Site A when the IP WAN is operational?

  A. The calls will always take the IP WAN route.
  B. The calls will always take the PSTN route.
  C. The calls will fail because the destination patterns are identical.
  D. The calls will use round-robin scheduling between the IP WAN and PSTN paths.
  E. The calls will use the IP WAN route unless there is a failure or congestion during which the calls will reroute via the PSTN.
  D. The calls will use round-robin scheduling between the IP WAN and PSTN paths.

• Question 32:

  What are two benefits of using the DiffServ model? (Choose two.)

  A. DiffServ is a flow-based architecture.
  B. DiffServ is highly scalable.
  C. DiffServ keeps flow state on each node in the network.
  D. DiffServ supports a large number of service classes.
  E. DiffServ uses repetitive signaling for each flow.
  B. DiffServ is highly scalable.
  D. DiffServ supports a large number of service classes.

• Question 33:

  Which is a function of RTP?

  A. call multiplexing
  B. encryption
  C. payload identification
  D. replay protection
  C. payload identification

• Question 34:

  Refer to the exhibit. Consider an outgoing call that is being placed in all three scenarios that are shown in the exhibit. What is the result of the call, going down the table from top to bottom?

  

  A. success, success, success
  B. success, success, fail
  C. success, fail, success
  D. success, fail, fail
  E. fail, success, success
  F. fail, success, fail
  A. success, success, success

  ---

  Various combinations of COR lists and the results are shown in this table: http://www.cisco.com/en/US/tech/tk652/tk90/technologies_configuration_example09186a00801 9d649.shtml

  

  

• Question 35:

  Using Cisco best practices, on which application should you implement calling privileges?

  A. quality of service
  B. type of service
  C. route pattern
  D. class of restriction
  D. class of restriction

• Question 36:

  Which two signaling methods are supported on Cisco FXO and FXS ports? (Choose two.)

  A. loop-start
  B. ground-start
  C. AMI
  D. EandM
  E. kewlstart
  A. loop-start
  B. ground-start

• Question 37:

  Which WAN connection speeds are recommended for using link fragmentation and interleaving?

  A. speeds at 768 and lower
  B. speeds at T1 and below
  C. speeds between 512 and 768
  D. speeds between 64 and 512
  A. speeds at 768 and lower

• Question 38:

  How many bits are added to a secure Real-Time Transport Protocol packet from the 160-bit SHA-1 hash?

  A. 160
  B. 32
  C. 64
  D. 128
  B. 32

• Question 39:

  When configuring a new Cisco 7965 SCCP phone in Cisco Unified Communications Manager Express, which load file needs to be included under telephony-service?

  A. term45.default.loads
  B. cnu45.8-4-0-79.sbn
  C. term65.default.loads
  D. dsp45.8-4-0-79.sbn
  E. apps45.9-0-2ES2.sbn
  F. SCCP45.9-0-2SR1S.loads
  G. dsp45.8-4-0-79.sbn.
  H. jar45sccp.8-4-0-79.sbn
  I. cvm45sccp.8-4-0-79.sbn
  F. SCCP45.9-0-2SR1S.loads

• Question 40:

  Which two gateway protocols can be configured if you have Cisco 2600XM or 3700 Series Multiservice Routers installed? (Choose two.)

  A. MGCP
  B. SIP
  C. H.323
  D. SCCP
  A. MGCP
  C. H.323