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CCIE Collaboration Written Exam

QUESTION 1

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.

 

Correct Answer: CF

Explanation:

Choosing the Right Distribution Method

Which of the three different image-distribution methods discussed so far is the best for a customer deployment? Each method has advantages and disadvantages, and they are summarized in Table 1.

 

Table 1. Summary of Distribution Models

 

Peer Firmware Sharing

Load Server

Traditional TFTP

Advantages

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

Has same download time as LAN image distribution

Distributes TFTP load over multiple TFTP servers

Proven distribution

Default behavior

Disadvantages

Must be enabled on each phone

Hierarchy is formed for each phone model

Hierarchy is limited to subnet

IP must be set on each phone

Administrator must manually file copy to load server

No failback to TFTP on error

More prone to user error

High-bandwidth requirements

Multiple requests for same file

High CPU usage on TFTP server

 

Reference:

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6882/ps6884/white_paper_c11-583891.pdf

 

 

 

 

 

QUESTION 2

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.)

 

clip_image002

 

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

 

Correct Answer: CE

Explanation:

We get option for Identity Trust list Files and Mobile Voice Access audio files.

 

 

QUESTION 3

Which capability is support by LLDP-MED but not by Cisco Discovery Protocol?

 

A.

LAN speed discovery

B.

network policy discovery

C.

location identification discovery

D.

power discovery

E.

trust extension

 

Correct Answer: A

Explanation:

LLDP-MED supports both LAN speed and duplex discovery. Cisco Discovery Protocol supports duplex discovery only, but this limited support is not seen as a problem because if there is a speed mismatch, LLDP-MED and Cisco Discovery Protocol cannot be exchanged and thus cannot be used to detect the mismatch.

 

 

 

 

QUESTION 4

Company ABC is planning to migrate from MCS-hosted Cisco Unified Communications Manager applications to Cisco UC on UCS B-Series servers. Which statement about installation media support is true for this migration?

 

A.

The install log can be written to a USB flash drive that is attached to the UCS server.

B.

The answer file that is generated by the Answer File Generator (platformConfig.xml) can be read from a USB flash drive to perform an unattended installa
tion on the UCS server.

C.

The Cisco Music on Hold USB audio sound card can be mapped to a virtual USB port on a VMware virtual machine on the UCS server.

D.

The answer file that is generated by the Answer File Generator (platformConfig.xml) can be read from an FLP image that is mounted in a virtual floppy drive.

E.

The Cisco Music on Hold USB audio sound card can be mapped to a virtual serial port on a VMware virtual machine on the UCS server.

 

Correct Answer: D

Explanation:

Using the AFG will allow you to get this license mac before even touching the server. It is provided after filling in the main form of the AFG but it can also be found by looking at the last few lines of your platformconfig.xml file.

Once you have the xml files, you will need to map those to the floppy drive of the VM (no usb support on the VM OVA). There are many ways to do this. I simply use a freeware virtual floppy app that I drop the platformconfig.xml file on and then copy the*.flp image out to the datastore. I’ll end up with a directory on my datastore called AFG that has the host named *.flp images that I will use during install. It also serves as archival of these files in the event the server needs to be re-imaged. This is important because the license mac will change if every parameter is not entered exactly as it was prior. If the license mac changes, you will have to go through the process of requesting new license files to be generated.

 

Reference:

http://angryciscoguy.com/jello/cisco-answer-file-generator-to-the-rescue/

 

 

QUESTION 5

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.

 

Correct Answer: D

Explanation:

Voice traffic cannot recapture lost packets. Rather than retransmitting a lost network connection, the phone resets and attempts to reconnect its network connection.

 

Reference:

http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/6921_6941_6961/7_1_2/english/admin/guide/6921trb.html#wp1031181

 

 

QUESTION 6

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

 

Correct Answer: CD

Explanation:

Cisco EnergyWise Neighbor Discovery Process

The Cisco EnergyWise neighbor discovery process is the mechanism by which domain members discover each other and populate their Cisco EnergyWise neighbor tables. Cisco EnergyWise queries can subsequently be distributed to all domain members using the neighbor relationships to monitor and control the power usage of devices within a domain. Cisco EnergyWise domain members automatically discover their neighbors through one of two mechanisms:

 

clip_image004Cisco EnergyWise UDP broadcast packet

clip_image004[1]Cisco EnergyWise CDP packets

 

UDP broadcast packets are automatically sent out switch ports which support Cisco EnergyWise, regardless of whether the interfaces are configured with the no energywise interface-level command. CDP packets are sent when CDP is configured for the switch ports.

 

Reference:

http://www.cisco.com/en/US/docs/
solutions/Enterprise/Borderless_Networks/Energy_Management/energywisedg.html?referring_site=smartnavRD#wp555927

 

 

QUESTION 7

Which two statements about the Cisco UC on UCS specs-based virtualization support model are true? (Choose two.)

 

A.

It has a configuration-based approach.

B.

It has a rule-based approach.

C.

It has less hardware flexibility compared to the third-party server specs-based support model.

D.

It has less hardware flexibility compared to the UC on UCS TRC support model.

E.

VMware vCenter is optional with this support model.

 

Correct Answer: BC

Explanation:

http://docwiki.cisco.com/wiki/UC_Virtualization_Supported_Hardware#UC_on_UCS_Tested_Reference_Configurations

 

 

QUESTION 8

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

 

Correct 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 9

Which statement about the Cisco UC on UCS TRC and the third-party server specs-based virtualization support model is true?

 

A.

Both the UC on UCS TRC and the third-party servers spec-based support models have rule-based approaches.

B.

The UC on UCS TRC support model has a rule-based approach and the third-party servers spec-based support model has a configuration-based approach.

C.

The UC on UCS TRC support model requires a high level of virtualization experience while the third-party server spec-based support model requires a low to medium level virtualization experience.

D.

VMware vCenter is mandatory for the UC on UCS TRC support model but it is optional for the third-party server spec-based support model.

E.

VMware vCenter is optional for the UC on UCS TRC support model but it is mandatory for the third-party server spec-based support model.

 

Correct Answer: E

Explanation:

VMware vCenter is optional when deploying on UC on UCS Tested Reference Configuration hardware mandatory when deploying on UC on UCS Specs-based and Third-party Server Specs-based hardware.

vCenter Statistics Level 4 logging is mandatory so that Cisco TAC is able to provide effective support.

Click here for how to configure VMware vCenter to capture these logs. If not configured by default, Cisco TAC may request enabling these settings in order to provide effective support.

Also note that enablement of specific VMware vSphere management features may require vCenter and/or a higher feature Edition of vSphere ESXi. Cisco Collaboration does not require its own dedicated vCenter.

Note that when VMware vCenter is not required and is not used, then VMware vSphere ESXi’s default management interface is its free/included VMware vSphere Client (formerly branded VI Client).

 

Reference:

http://docwiki.cisco.com/wiki/Unified_Communications_VMware_Requirements

 

 

QUESTION 10

What is the maximum number of call-processing subscribers in a standard deployment of a Cisco Unified Communications Manager Session Management Edition cluster?

 

A.

3

B.

4

C.

5

D.

8

E.

16

 

Correct Answer: D

Explanation:

There is no deployment difference between CUCM & CUCM session management Edition cluster. The only difference is that CUCM SME is designed to support a large number of trunk to trunk connections. Thus, 8 subscribers.

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