Q1. In the case of a VCS cluster, which configuration element is recommended for endpoint H.323 registration?
A. DNS SRV records pointing to the VCS cluster name
B. static IP addresses
C. hostname of the VCS cluster configuration master
D. hostname of the VCS cluster member peer
Answer: A
Q2. Which option configures call preservation for H.323-based SRST mode?
A. voice service voip h323 call preserve
B. call preservation not possible with H.323
C. call-manager-fallback preserve-call
D. dial-peer voice 1 voip call preserve
Answer: A
Q3. During device failover to the secondary Cisco Unified Communications Manager server, how does the phone recognize that the primary server is back?
A. The secondary server keeps sending keepalive message to the primary server and when it succeeds, it unregisters the phones to force them to register to the primary.
B. When the primary server goes online, it sends out an "ALIVE" message via broadcast so that the phones re-register.
C. The phones never re-register with the primary server until the active (secondary) one goes down.
D. The phone sends keepalive messages to the primary server frequently and when it succeeds, the phone re-registers with it.
Answer: D
Q4. Refer to the exhibit.
How many calls are permitted by the RSVP configuration?
A. one G.711 call
B. two G.729 calls
C. one G.729 call and one G.711 call
D. eight G.729 calls
E. four G.729 calls
Answer: B
Explanation:
Incorrect Answer: A, C, D, E In performing location bandwidth calculations for purposes of call admission control, Cisco Unified Communications Manager assumes that each call stream consumes the following amount of bandwidth:
.G.711 call uses 80 kb/s.
.G.722 call uses 80 kb/s.
.G.723 call uses 24 kb/s.
.G.728 call uses 26.66 kb/s.
.G.729 call uses 24 kb/s.
Link: http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmsys/a02cac.html #wpxref28640
Q5. Which trunk should you use in an H.323 gatekeeper-controlled network?
A. H.323
B. H.225
C. SIP
D. Intercluster
E. MGCP FXO trunk
F. MGCP T1/E1 trunk
Answer: B
Q6. Which two statements about symmetric encryption are true? (Choose two.)
A. With symmetric encryption, the encryption key equals the decryption key.
B. Symmetric encryption is commonly used to sign asymmetric keys.
C. Symmetric encryption is a good choice for real-time encryption of bulk data.
D. Symmetric encryption uses asymmetric keys.
Answer: A,C
Explanation:
Incorrect Answer: B, D There are two basic techniques for encrypting information: symmetric encryption (also called secret key encryption) and asymmetric encryption (also called public key encryption.) in symmetric key As long as both sender and recipient know the secret key, they can encrypt and decrypt all messages that use this key. A public key is made freely available to anyone who might want to send you a message. A second, private key is kept secret, so that only you know it. Link:
http://support.microsoft.com/kb/246071
Q7. The relationship between a Region and a Location is that the Region codec parameter is used between a Region and its configured Locations.
A. TRUE
B. FALSE
Answer: B
Explanation:
Locations work in conjunction with regions to define the characteristics of a network link. Regions define the type of compression (G.711, G.722, G.723, G.729, GSM, or wideband) that is used on the link, and locations define the amount of available bandwidth for the link Link:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmsys/a02cac.html #wp1033331
Q8. Which three options are overlapping parameters for roaming when a device is configured for Device Mobility? (Choose three.)
A. MRGL
B. location
C. network locale
D. codec
E. extension
F. device pool
Answer: A,B,C
Q9. Which action configures the registration of transcoder resources?
A. Cisco IOS software registers transcoder resources with SIP.
B. Cisco IOS software registers transcoder resources with SCCP.
C. Cisco IOS software registers transcoder resources with H.323.
D. Cisco IOS software does not register transcoder resources.
Answer: B
Q10. Scenario
There are two call control systems in this item. The Cisco UCM is controlling the DX650, the Cisco Jabber for Windows Client, and the 9971 Video IP Phone. The Cisco VCS is controlling the SX20, the Cisco TelePresence MCU, and the Cisco Jabber TelePresence for Windows.
Use the exhibits to answer the following questions.
SX20 System Information
DX650 Configuration
MRGL
DP
Locations
AARG
CSS
Movi Failure
Movi Settings
A new DX650 IP phone with MAC address D0C7.8914.132D, IP address is 172.18.32.119 has been added to the Cisco Unified Communications Manager, but is not registering properly.
What is causing this failure?
A. Device Pool cannot be default.
B. The DX650 is the incorrect calling search space.
C. The DX650 Phones does not support SIP.
D. The location Hub_None has not been activated.
E. The DX650’s MAC address is incorrect in the Cisco UCM.
Answer: E
Explanation:
From the screen capture below we can see that the DX650 phone’s MAC address was incorrectly entered as D0C78914131D, not D0C78914132D.