What is the minimum number of TCP sessions needed to complete a H.323 call between two
H.323 gateways using slow start?
A.
0
B.
1
C.
2
D.
3
E.
4
Explanation:
Fast start allows for H323 media connections to be started at the beginning of a
call. This is helpful for ringback scenarios, and also reduces the amount of time calls take to
establish media. H245 is still negotiated later, but the actual media can be done earlier through
H225 messages.
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QUESTION 121
Which capability is supported by Cisco Discovery Protocol but not by LLDP-MED?
A. LAN speed and duplex discovery
B. network policy discovery
C. location identification discovery
D. power discovery
E. trust extension
Answer: E
Explanation:
Cisco Discovery Protocol provides an additional capability not found in LLDP-MED that allows the switch to extend trust to the phone. In this case, the phone is now trusted to mark the packets received on the PC port accordingly. This feature can be used to off-load the switch because now it does not need to police the information being received from the phone.
QUESTION 122
Which two mechanisms does Cisco EnergyWise use for neighbor discovery? (Choose two.)
A. multicast
B. LLDP-MED
C. UDP broadcast
D. Cisco Discovery Protocol
E. TCP
Answer: CD
QUESTION 123
Which protocol does the Cisco Prime LAN Management Solution application use to communicate with Cisco EnergyWise domain members?
A. UDP broadcast
B. Cisco Discovery Protocol
C. UDP unicast
D. TCP
E. multicast
Answer: D
Explanation:
Cisco Prime LMS 4.1 uses TCP port 43440.
QUESTION 124
Refer to the exhibit. Assuming that the administrator has never performed any manual custom uploads, which two file types can be found when you choose Software Upgrades, followed by TFTP File Management on the Cisco Unified Operating System Administration web page? (Choose two.)
A. IP phone configuration files
B. sample music-on-hold audio files
C. Identity Trust List files
D. IP phone license files
E. Mobile Voice Access audio files
F. softkey template files
Answer: CE
Explanation:
We get option for Identity Trust list Files and Mobile Voice Access audio files.
QUESTION 125
Which statement describes a disadvantage of using the Cisco TFTP service to serve IP phone load files?
A. The Cisco TFTP services can run on only one Cisco Unified Communications Manager server in
a cluster.
B. Because TFTP operates on top of UDP, there is a high risk of corrupted load file delivery at the
completion of the TFTP process due to undetected data loss in the network.
C. If a response is not received in the timeout period, the TFTP server will not resend the data packet.
D. Packet loss can significantly increase the TFTP session completion time.
E. Because TFTP operates with an adaptive timeout period, the time to complete the file transfer is
unpredictable.
Answer: D
QUESTION 126
Which two statements about using the Load Server option for IP phone firmware distribution are true? (Choose two.)
A. This option must be enabled on at least two servers in a Cisco Unified Communications Manager cluster.
B. This option must be enabled on Cisco Unified Communications Manager service parameters for
Cisco TFTP.
C. Phone firmware must be manually copied to any applicable load servers.
D. The load server will not function if its IP address is not in the same subnet as the IP phones.
E. This option is only available for newer IP phone models.
F. This option does not accommodate falling back to Cisco TFTP on error.
Answer: CF
QUESTION 127
Which two statements about the Peer Firmware Sharing option for IP phone firmware distribution are true? (Choose two.)
A. This option uses a parent-child hierarchy in which a firmware image is downloaded by a parent phone to
up to three directly associated child phones.
B. This option must be enabled on Cisco Unified Communications Manager service parameters for Cisco TFTP.
C. This option mandates that the parent phone and child phones be identical, selected phone models.
D. This option allows firmware transfers between phones in different subnets, as long as the round-trip delay is
less than 5 milliseconds.
E. This option uses a parent-child hierarchy that must be manually defined by the Cisco Unified Communications
Manager administrator.
F. This option allows falling back to the TFTP server in the Cisco Unified Communications Manager cluster.
Answer: CF
Explanation:
Peer Firmware Sharing works by setting up a parent-child hierarchy of the phones in which a firmware image is downloaded by the parent phone to a child phone. The advantage of using Peer Firmware Sharing is that instead of all phones individually retrieving a software image, they pass the image along from one phone to another phone on the same subnet.
Advantage of PFS:
Hierarchy is automatic
One download per phone model on a subnet
Uses TCP
Fails back to TFTP
Speeds up LAN upgrades
Reduces TFTP CPU load during upgrade
QUESTION 128
How many RTP streams exist on the network when a Cisco Unified Contact Center Express agent is engaged in a call that is being silently monitored and recorded?
A. 3
B. 4
C. 5
D. 6
E. 8
Answer: D
QUESTION 129
……
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