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Category: 642-415

Exam 642-415: UCAD – Unified Communications Architecture and Design

What is the recommended packet fragmentation size for this circuit?

Ajax has completed its IP telephony rollout. The legacy PBX has been removed, and the entire phone system is now on IP using Cisco Unified Communications Manager for call processing control.

Ajax has recently acquired Best Auto Accessories in Redmond, WA. Best is a small distributor of automobile parts and accessories. Best has 36 office employees and 48 warehouse workers in a single building. The Best phone system consists of a four-year-old key system. All calls enter the company through the company operator who then uses the overhead paging system to inform users of incoming calls.

Ajax plans to integrate Best as a remote site into the new Cisco IP telephony system at Ajax. The 36 office employees will be converted to IP phones with DID along with two phones in the warehouse that will not be DID. All IP phones will register with the Cisco Unified Communications Manager cluster at the Ajax central campus.

Ajax plans to connect with Best via a point-to-point circuit. The Redmond office will maintain external connections to the PSTN but will use the connection with Ajax to carry internal calls and for Internet connectivity. Internal calls crossing the WAN will use a G.729 codec with 20ms payload for bandwidth savings. Call Admission Control will be implemented using locations. The voice-mail system only supports the G.711 codec and will be centralized with the Cisco Unified Communications Manager.

When you analyze the distribution of the packet sizes that will be traversing the WAN link to the home office, you note that there is a potential for delay where voice packets could be trapped behind large data packets. Ajax wants you to determine if a 384 kbps WAN circuit is feasible. What is the recommended packet fragmentation size for this circuit?

what layer will the Redmond office connect to the central site network?

Ajax has completed its IP telephony rollout. The legacy PBX has been removed, and the entire phone system is now on IP using Cisco Unified Communications Manager for call processing control.

Ajax has recently acquired Best Auto Accessories in Redmond, WA. Best is a small distributor of automobile parts and accessories. Best has 36 office employees and 48 warehouse workers in a single building. The Best phone system consists of a four-year-old key system. All calls enter the company through the company operator who then uses the overhead paging system to inform users of incoming calls.

Ajax plans to integrate Best as a remote site into the new Cisco IP telephony system at Ajax. The 36 office employees will be converted to IP phones with DID along with two phones in the warehouse that will not be DID. All IP phones will register with the Cisco Unified Communications Manager cluster at the Ajax central campus.
Ajax plans to connect with Best via a point-to-point circuit. The Redmond office will maintain external connections to the PSTN but will use the connection with Ajax to carry internal calls and for Internet connectivity. Internal calls crossing the WAN will use a G.729 codec with 20ms payload for bandwidth savings. Call Admission Control will be implemented using locations. The voice-mail system only supports the G.711 codec and will be centralized with the Cisco Unified Aiotestking.com
Communications Manager.

In the traditional three-tier network design, at what layer will the Redmond office connect to the central site network?

what two options must you include in your design?

In the past, Ajax has experienced several phone outages, one of which lasted over seven hours when the company’s current PBX had a software crash. Telephone communications are critical, so Ajax would like to design the IP telephony solution to be scalable and highly available.

In designing a Cisco Unified Communications Manager clusterfor highest availability, what two options must you include in your design? (Choose two.)

Which four parameters must be considered when selecting the hardware platform for a Cisco Unified Communicatio

In the past, Ajax has experienced several phone outages, one of which lasted over seven hours when the company’s current PBX had a software crash. Telephone communications are critical, so Ajax would like to design the IP telephony solution to be scalable and highly available.

Which four parameters must be considered when selecting the hardware platform for a Cisco Unified Communications Manager implementation? (Choose four.)

Which three options must you consider when deciding upon a cluster server redundancy scheme?

In the past, Ajax has experienced several phone outages, one of which lasted over seven hours when the company’s current PBX had a software crash. Telephone communications are critical, so Ajax would like to design the IP telephony solution to be scalable and highly available.

Which three options must you consider when deciding upon a cluster server redundancy scheme? (Choose three.)Which three options must you consider when deciding upon a cluster server redundancy scheme? (Choose three.)

Which three options must you consider when deciding upon a cluster server redundancy scheme? (Choose three.)

What would be the minimum number of DIDs required if each new phone has two line appearances?

AjaxAulo Components has been growing slowly over the last four years. Ajax expects the growth trend to continue. The company currently has 942 employees with 822 phones, of which 805 have DID. The company is planning to hire 300 new employees, of which 214 will have dedicated phones with DID.

What would be the minimum number of DIDs required if each new phone has two line appearances?

What is the maximum number of simultaneous MoH messages that will be streaming at anytime?

Ajax has nine departments plus Coiporate personnel with a total of 822 phones. Each department has a separate MoH message. All the departments would like to play their messages when they place a caller on hold. A standard corporate message is played when people outside of these nine departments place a user on hold.

What is the maximum number of simultaneous MoH messages that will be streaming at anytime?

What type of MoH transport mechanism can satisfy these requirements?

Ajax has nine departments plus Coiporate personnel with a total of 822 phones. Each department has a separate MoH message. All the departments would like to play their messages when they place a caller on hold. A standard corporate message is played when people outside of these nine departments place a user on hold.
The IT department wants to minimize the amount of bandwidth consumed by MoH streams. What type of MoH transport mechanism can satisfy these requirements?

Which two are the optimum locations where network devices can be trusted to apply OoS correctly?

Based on information discovered during the investigation phase of the design, it has been decided that the proper deployment model for Ajaxis single-site call processing. The access layer devices will be placed in the IDF closets, the distribution layer devices will be placed in the MDF closets, and the core will be deployed in the computer room.

In the three office buildings, each floor has an IDF, which services approximately 70 to 80 users. Each of the R&D and Manufacturing buildings also has an IDF. Building 1 also houses the MDF in the basement. Ajax is currently using Toke Ring and an FDDI backbone. The network is to be migrated to a 100BaseT or faster Ethernet network.
Ajax has had many network outages in their current network and is concerned with network availability, especially because the phone system will now be residing on the same network.
Aiotestking.com
As the new Ethernet network is deployed with OoS. it will be important to assign a trust boundary. Which two are the optimum locations where network devices can be trusted to apply OoS correctly? (Choose two.)

How should VLANs be deployed according to best practices?

Based on information discovered during the investigation phase of the design, it has been decided that the proper deployment model for Ajaxis single-site call processing. The access layer devices will be placed in the IDF closets, the distribution layer devices will be placed in the MDF closets, and the core will be deployed in the computer room.

In the three office buildings, each floor has an IDF, which services approximately 70 to 80 users. Each of the R&D and Manufacturing buildings also has an IDF. Building 1 also houses the MDF in the basement. Ajax is currently using Toke Ring and an FDDI backbone. The network is to be migrated to a 100BaseT or faster Ethernet network.
Ajax has had many network outages in their current network and is concerned with network availability, especially because the phone system will now be residing on the same network.

Currently, each IDF supports a single ring per floor no matter how many different departments are on that floor. How should VLANs be deployed according to best practices?


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