What is the reason that an outgoing call succeeds when COR is applied to the incoming
dial peer, but no COR is applied to the outgoing dial peer?
Answer : C
Assume a SIP voice network. Drag each characteristic to the type of SIP call setup the
characteristics best describes.
When deploying an 802.3af switch what is the default number of Watts consumed by each
port if 802.3af compliant devices are attached to the switch?
Answer : D
A small office needs to provide outbound dialing and in-bound DID without the cost of a T1
circuit. All signaling is loop start. Which analog port configuration will support these
Answer : A
How does LLQ ensure that voice traffic is always expedited?
Answer : D
Explanation: Without Low Latency Queueing, CBWFQ provides weighted fair queueing based on defined classes with no strict priority queue available for real-time traffic. This scheme poses problems for voice traffic that is largely intolerant of delay, especially variation in delay. For voice traffic, variations in delay introduce irregularities of transmission manifesting as jitter in the heard conversation. The Low Latency Queueing feature provides strict priority queueing for CBWFQ, reducing jitter in voice conversations. Configured by the priority command, Low Latency Queueing enables use of a single, strict priority queue within CBWFQ at the class level, allowing you to direct traffic belonging to a class to the CBWFQ strict priority queue. http://www.cisco.com/en/US/docs/ios/12_0t/12_0t7/feature/guide/pqcbwfq.html
Which statement best describes dial peers in a voice gateway. (Choose two.)
Answer : A,C
Refer to the exhibit.
Answer : A
Refer to the exhibit. When an inbound PSTN call to 4087071222 is received by the router
that is shown in the exhibit, what is the resulting called number?
Answer : D
Explanation: /^.*\(.$\) Truncates Numbers down to the last 4 digits. http://www.cisco.com/en/US/tech/tk652/tk90/technologies_tech_note09186a0080325e8e.s html
Refer to the exhibit. What will the class map do if a packet arrives that is marked with a
CoS of 6 and a DSCP value of EF?
Answer : B
Explanation: If there is no match for a packet, no QoS processing occurs on the packet and the switch offers best-effort service to the packet. http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_25_see/ configuration/guide/swqos.html
Which codec complexity type will offer the greatest number of voice channels, provided that
the complexity type is compatible with the particular codecs that are in use?
Answer : A
Explanation: Codec complexity refers to the amount of processing required to perform voice compression. Codec complexity affects the call densitythe number of calls reconciled on the DSPs. With higher codec complexity, fewer calls can be handled. Select a higher codec complexity if that is required to support a particular codec or combination of codecs. Select a lower codec complexity to support the greatest number of voice channels, provided that the lower complexity is compatible with the particular codecs in use. http://www.cisco.com/en/US/docs/ios/12_3t/voice/command/reference/vrht_c6_ps5207_TS D_Products_Command_Reference_Chapter.html
Which type of voice port supports immediate-start, wink-start, and delay-start followed by
pulse or DTMF tones?
Answer : D
Refer to the exhibit. Which type of ephone-dn is configured for the two ephones that are
Answer : E
Explanation: The above exhibit shows the configuration for a simple shared-line overlay set. The primary ephone-dn that is configured for each phone is unique while the remaining ephone-dns 10, 11, and 12 are shared in the overlay set on both phones. The primary ephone-dn in a shared-line overlay set is configured unique to the phone to guarantee that the phone has a line available for outgoing calls, and to ensure that the phone user can obtain dial-tone even when there are no idle lines available in the rest of the shared-line overlay set. Using a unique ephone-dn also provides a unique calling party identity on outbound calls made by the phone so that the called user can see which specific phone is calling. http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmeco ver.html#wp1099687
Refer to the exhibit. Your company's QoS policy states that all traffic that is arriving at
access layer switches from IP phones should be marked with a DSCP value of 46 and that
all untagged traffic that is arriving from a PC that is attached to an IP phone should be
marked with a CoS value of 1. Which two options will satisfy the requirements for the CoS-
to-DSCP map and are the correct QoS commands? (Choose two.)
Answer : B,C
Explanation: To define the ingress Class of Service (CoS)-to-differentiated services code point (DSCP) map for trusted interfaces, use the mls qos map cos-dscp command in global configuration mode. mls qos map cos-dscp dscp1...dscp8 dscp1...dscp8 - Defines the CoS-to-DSCP map. For dscp1...dscp8, enter eight DSCP values that correspond to CoS values 0to 7. Separate consecutive DSCP values from each other with a space. The supported DSCP values are 0, 8, 10, 16, 18, 24, 26, 32, 34, 40, 46, 48, and 56. To define the default multilayer switching (MLS) class of service (CoS) value of a port or to assign the default CoS value to all incoming packets on the port, use the mls qos cos command in interface configuration mode. mls qos cos cos-value cos-value - Assigns a default CoS value to a port. If the port is CoS trusted and packets are untagged, the default CoS value is used to select one output queue as an index into the CoS-to-DSCP map. The CoS range is 0 to 7. The default is 0. http://www.cisco.com/en/US/docs/ios/qos/command/reference/qos_m2.html#wp1041343