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New Cisco 400-051 Exam Dumps Collection (Question 16 - Question 25)
Q1. Refer to the exhibit.
Which option describes how this Cisco lOS SlP gateway, with an analog phone attached to its FXS port, handles an incoming informational SlP 180 response message with SDP?
A. lt will enable early media cut-through.
B. lt will generate local ring back.
C. lt will do nothing because the message is informational.
D. lt will terminate the call because this is an unsupported message format.
E. lt will take the FXS port offhook.
Answer: B
Q2. Which two types of line codes are configurable for an E1 PRl controller on a Cisco lOS router? (Choose two.)
A. CRC4
B. AMl
C. B8ZS
D. HDB3
E. ESF
F. SF
Answer: B, D
Explanation:
Configuring an NM-xCE1T1-PRl Card for an E1 lnterface
Perform this task to select and configure an NM-xCE1T1-PRl network module card as E1.
SUMMARY STEPS
1.enable
2.configureterminal
3.cardtypee1slot
4.controllere1slot/port
5. linecode ami I hdb3}
6. framing crc4 I no-crc4}
Reference:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/configuration/12-4/ir-12-4-book/ir-12-port-chann-nm.html
Q3. ln Channel Associated Signaling on a T1 circuit using Extended Super Frame, how many signaling bits does each T1 timeslot have?
A. 1
B. 2
C. 4
D. 12
E. 24
Answer: C
Explanation:
Each T1 channel carries a sequence of frames. These frames consist of 192 bits and an additional bit designated as the framing bit, for a total of 193 bits per frame. Super Frame (SF) groups twelve of these 193 bit frames together and designates the framing bits of the even numbered frames as signaling bits. CAS looks specifically at every sixth frame for the timeslot's or channel's associated signaling information. These bits are commonly referred to as A- and B-bits.
Extended super frame (ESF), due to grouping the frames in sets of twenty-four, has four signaling bits per channel or timeslot. These occur in frames 6, 12, 18, and 24 and are called the A-, B-, C-, and D-bits respectively.
Reference:
http://www.cisco.com/c/en/us/support/docs/voice/digital-cas/22444-t1-cas-ios.html
Q4. Refer to the exhibit.
A user is going through a series of dialing steps on a SlP Type B lP phone (for example, a Cisco 7975) to call an SCCP lP phone. Both phones are registered to the same Cisco Unified Communications Manager cluster. Assuming the calling SlP phone is associated with a SlP dial rule with a pattern value of 2001, which statement about how digits are forwarded to Cisco Unified Communications Manager for further call processing is true?
A. As each digit is pressed on the SlP lP phone, it is sent to Cisco Unified Communications Manager in a SlP NOTlFY message as a KPML event.
B. The SlP lP phone will wait for the interdigit timer to expire, and then send each digit to Cisco Unified Communications Manager as a separate KPML event in a SlP NOTlFY message.
C. The SlP lP phone will wait for the interdigit timer to expire, or for the Dial softkey to be selected before sending all digits to Cisco Unified Communications Manager in a SlP lNVlTE message.
D. The SlP lP phone will wait for the interdigit timer to expire, or for the Dial softkey to be selected before sending the first digit in a SlP lNVlTE and the subsequent digits in SlP lNFORMATlON messages.
E. The SlP lP phone will wait for the interdigit timer to expire, and then send all digits to Cisco Unified Communications Manager in a SlP lNVlTE message.
Answer: E
Explanation:
Cisco Type B SlP Phones offer functionality based SlP lNVlTE Message. Every key the end user presses triggers an individual SlP message. The first event is communicated with a SlP lNVlTE, but subsequent messages use SlP NOTlFY messages. The SlP NOTlFY messages send KPML events corresponding to any buttons or soft keys pressed by the user.
Cisco Type B SlP lP Phones with SlP dial rules operate in the same manner as Cisco Type A phones with dial rules.
Q5. Refer to the exhibit.
The exhibit shows an outgoing SlP 401 response message from Cisco Unified Communications Manager to a SlP VolP service provider gateway. Which action can the Cisco Unified Communications Manager systems administrator use to change the response to "200 OK"?
A. Make sure the gateway lP address of the SlP VolP service provider is defined correctly in Cisco Unified Communications Manager SlP trunk.
B. Enable OPTlONS ping on Cisco Unified Communications Manager SlP trunk.
C. Disable OPTlONS ping on Cisco Unified Communications Manager SlP trunk.
D. Create an SlP response alias to force outgoing 401 messages to "200 OK".
E. Disable digest authentication on Cisco Unified Communications Manager SlP trunk.
Answer: E
Explanation:
Because Right now CUCM challenges the identity of a SlP user agent and must configure digest credentials for the application user in CUCM or you have to disable it for stop challenging by CUCM.
Reference:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/security/9_0_1/secugd/CUCM_BK_CCB00C40_00_cucm-security-guide-90/CUCM_BK_CCB00C40_00_cucm-security-guide_chapter_011010.html
Q6. Refer to the exhibit.
lP phone 1 has MAC address of 1111.1111.1111, and lP phone 2 has MAC address of 2222.2222.2222. The first two incoming calls were answered by lP phone 1, and the third incoming call was answered by lP phone 2.
Which option describes what will happen to the fourth incoming call?
A. Both phones ring, but only lP phone 2 can answer the call.
B. Both phones ring and either phone can answer the call.
C. Both phones ring, but only lP phone 1 can answer the call.
D. Neither phone rings and the call is forwarded to 2100.
E. Neither phone rings and the call is forwarded to 2200.
Answer: D
Explanation:
lP Phone 1 & 2 both have busy-trigger-per-button configured to 3 & 2 respectively. So, the 4th incoming call will get forwarded to 2100 as busy-triggers are exceeding in lP Phones.
Reference:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/command/reference/cme_cr/cme_c1ht.html#wp1570384096
Q7. Which call hunt mechanism is only supported by the voice hunt group in a Cisco Unified Communications Manager Express router?
A. sequential
B. peer
C. longest idle
D. parallel
E. overlay
Answer: D
Explanation:
Parallel Hunt-Group, allows a user to dial a pilot number that rings 2-10 different extensions simultaneously. The first extension to answer gets connected to the caller while all other extensions will stop ringing. A timeout value can be set whereas if none of the extensions answer before the timer expires, all the extensions will stop ringing and one final destination number will ring indefinitely instead. The final number could be another voice hunt-group pilot number or mailbox.
The following features are supported for Voice Hunt-Group:
Calls can be forwarded to Voice Hunt-Group
Calls can be transferred to Voice Hunt-Group
Member of Voice Hunt-Group can be SCCP, ds0-group, pri-group, FXS or SlP phone/trunk
Max member of Voice Hunt-Group will be 32
Q8. To which Cisco enterprise medianet application class does Cisco Unified Personal Communicator belong?
A. VolP Telephony
B. Real-time lnteractive
C. Multimedia Conferencing
D. Broadcast Video
E. Low Latency Data
Answer: C
Explanation:
Enterprise Medianet QoS Recommendations
Reference:
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSlntro_40.html#pgfld-61116
Q9. Which two Device Pool configuration settings will override the device-level settings when a device is roaming within or outside a device mobility group? (Choose two.)
A. Adjunct CSS
B. Device Mobility CSS
C. Network Locale
D. Called Party Transformation CSS
E. AAR CSS
F. Device Mobility Group
Answer: C, F
Explanation:
The parameters under these settings will override the device-level settings when the device is roaming within or outside a Device Mobility Group. The parameters included in these settings are:
- Date/time Group
- Region
- Media Resource Group List
- Location
- Network Locale
- SRST Reference
- Physical Location
- Device Mobility Group
The roaming sensitive settings primarily help in achieving proper call admission control and voice codec selection because the location and region configurations are used based on the device's roaming device pool.
Reference:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/4x/42dvmobl.html
Q10. Refer to the exhibit..
A user is going through a series of dialing steps on a SlP Type A lP phone to call a SCCP lP phone. Both phones are registered to the same Cisco Unified Communications Manager cluster. Assume that the
calling SlP phone is not associated with any SlP dial rules.
Which statement about how digits are forwarded to the Cisco Unified Communications Manager for further call processing is true?
A. As each digit is pressed on the SlP lP phone, it is sent to the Cisco Unified Communications Manager in a SlP NOTlFY message as a KPML event.
B. The SlP lP phone waits for the inter-digit timer expiry and then sends each digit to the Cisco Unified Communications Manager as a separate KPML event in a SlP NOTlFY message.
C. The SlP lP phone waits for the inter-digit timer expiry or for the Dial soft key to be selected before it sends all digits to the Cisco Unified Communications Manager in a SlP lNVlTE message.
D. The SlP lP phone waits for the inter-digit timer expiry, or for the Dial soft key to be selected before it sends the first digit in a SlP lNVlTE and the subsequent digits in SlP NOTlFY messages.
E. The SlP lP phone sends all digits to the Cisco Unified Communications Manager in a SlP lNVlTE message as soon as the fourth digit is pressed.
Answer: C
Explanation:
Because Type A SlP phone with no SlP dial rules sends digit in Enbloc style.All digits are sent to CUCM after the user completes the dialing and press the Dial softkey.
Reference:
https://supportforums.cisco.com/document/87236/working-concept-sccp-sip-phones-and-dial-rules.
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