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

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Example Questions

In a TDM PBXto Cisco Unified Communications Manager migration, which three things must be verified from the LAN perspective before IP telephony can be deployed? (Choose three.) 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. In an IP telephony solution, what must be provided by an access layer switch? Ajax has decided to open regional sales offices to put their sales staff closer to their customers. The new offices are located in Oakland, Denver, Chicago, and New York. The Northwest and Southeast regional sales offices are located the Redmond and Atlanta facilities. The sales offices will connect to the Ajax campus via a Frame Relay network. Each site will have a PSTN gateway for local and emergency calls. All calls to and from the regional offices as well as long distance calls should use the IP WAN as much as possible. Call processing and voice mail will remain centralized Atlanta. H.323 gateways will be deployed at the remote sites for PSTN access. The Ajax central campus and regional sales offices will use the G.711 codec locally. The G.729 codec will be used when calls cross the WAN, and cRTP will be implemented on each link. The voice-mail system only supports G.711. The final phase of the conversion to Unified Communications will be the migration to a Cisco Unity solution. Priorto the migration, the existing Audix voice-mail system will be used. What design issues need to be considered so that all user can access theirvoice mail? You have decided to use the MGCP signaling protocol for the PSTN gateway at Ajax. Which option is true regarding the use of a gatekeeper in their network? Ajax has contacted its LEC to obtain an additional range of DIDs. Their current DID range is 555- 6000 through 555-6999. The LEC can provide them with an additional range of numbers, 556- 6000 through 556-6999. The LEC is currently sending four digits inbound, so the two DID ranges overlap. What two things can be done to resolve this solution? (Choose two.) 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. If connectivity to the PSTN is lost in Redmond, external calls should be routed through the PSTN gateway at the Ajax location. This should be transparent to the user, so a local call should still only require seven-digit dialing. How can this be accomplished for local calls from Redmond? 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.) The Ajax network coordinator is concerned that the IP phones can be targeted for malicious attack. When the security is designed for the IP telephony solution, which two methods can be used to help prevent malicious phone attacks? (Choose two.) The Network and Telecom managers are concerned about voice and critical data traffic overwhelming the IP WAN circuit and causing unacceptable delays and poor call quality. Which Call Admission Control mechanism should you plan to deploy for this eployment? 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. In the traditional three-tier network design, at what layer will the Redmond office connect to the central site network? Ajax has deployed a firewall between their internal network and the Internet. All traffic to the Internet will pass through the firewall. For a single-site, centralized or distributed call processing model, what needs to be done to the Unified Communications infrastructure to ensure that the Cisco Unified Communications solution is in compliance with the Ajax security policy? 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? What are two conferencing guidelines for a single-site deployment? (Choose two.) Ajax has decided to open regional sales offices to put their sales staff closer to their customers. The new offices are located in Oakland, Denver, Chicago, and New York. The Northwest and Southeast regional sales offices are located the Redmond and Atlanta facilities. The sales offices will connect to the Ajax campus via a Frame Relay network. Each site will have a PSTN gateway for local and emergency calls. All calls to and from the regional offices as well as long distance calls should use the IP WAN as much as possible. Call processing and voice mail will remain centralized i Atlanta. H.323 gateways will be deployed at the remote sites for PSTN access. The Ajax central campus and regional sales offices will use the G.711 codec locally. The G.729 codec will be used when calls cross the WAN, and cRTP will be implemented on each link. The voice-mail system only supports G.711. In what locations will DSP resources need to be configured to minimize WAN traffic and support conferencing and transcoding? 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? Jake's Brakes is using an H.225 gatekeeper-controlled trunk between a Cisco Unified Communications Manager cluster and a gateway. When designing the security component for the Cisco Unified Communications Manager clusters, what two things can happen if you use a firewall between a Cisco Unified Communications Manager cluster and the voice and data VU\Ns? (Choose two.) Currently, Ajax is considering implementing an IP contact center for the technical support group. As an interim step, calls to the technical support group need to be distributed in a round-robin fashion. Can this be accomplished? Ajax has recently merged with Jake's Brakes of Tulsa Oklahoma. Jake's Brakes is an organization of 500 employees. The remote sales offices have 84 employees and the remainder are located at the Jake's Brakes headquarters. Jake's converted to a Cisco Unified Communications Manager IP phone system earlier this year. Jake's has deployed Cisco Unified Communications Manager Express at each remote sales office and a small Cisco Unified Communications Manager cluster at the Jake's headquarters. Currently, there are no overlapping extension numbers in the Jake's dial plan and all calls are placed over the PSTN. The system is fully functional and includes Cisco Unity at the headquarters and Cisco Unity Express voice mail at the remote sales offices. They have two T1 s to the PSTN and a single T1 to a local service provider for Internet access. A fourth and fifth T1 will connect the Ajax campus to the new Tulsa campus. These two T1 swill carry voice and data traffic between Ajax and Jake's. How can the two Cisco Unified Communications Manager clusters be configured so that IP phone calls can be placed between them? Ajax Auto Components manufactures automobile parts for the service and retail markets. The Ajax corporate campus i located north of Atlanta, Georgia. Ajax is presently using an Avaya PBXforits campus phone system that uses DCS signaling. The PBX cannot support all the new features that Ajax requires, so the company has decided to change its system from traditional TDM to IP telephony. The campus currently has 942 employees in three two -story office buildings, a single story R&D facility, and a manufacturing building. The five buildings are all connected via an FDDI ring. The campus is divided by County Line Road, which is the actual division between Fulton and Cobb counties. The office buildings are located on the east side of County Line Road, in Fulton County; the RSD building and manufacture plant are located on the west side County Line Road in Cobb County. It will be your job to help the company migrate from the traditional PBX system to a Cisco Unified Communications Manager system on a converged voice and data network. You are investigating the network at Ajax as the first step in designing a converged network. In a meeting with the telephony services manager and the data network manager, which two questions would you ask to obtain the informatic needed for the design of the IP telephony network? (Choose two.) Which problem occurs if a user from the remote facility located in Redmond is temporarily assigned to the Ajax Headquarters site, the user takes their IP phone and uses it there, and device mobility is not enabled? A route pattern exists in partition "Site1_Local" and an identical route pattern exists in partition "HQ_Local". A calling search space containing "Site1_Local" is assigned to an IP phone, and a calling search space containing "HQ_Local" is assigned to a line on that phone. How does Cisco Unified Communications Manager determine which route pattern to use? In the centralized call processing model, what is a disadvantage of using the traditional approach for building classes of service (as compared to the line/device approach)? Ajax Auto Components and Jake's Brakes have merged. Their two Cisco Unified Communications Manager systems have been connected by a gatekeeper-controlled intercluster trunk. To dial internally they both use an access code with a two-digit site code followed by a four-digit extension. How should the dial plan be designed for calls dialed from Ajax to a DN at Jake's? 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. 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.) Ajax has recently merged with Jake's Brakes of Tulsa Oklahoma. Jake's Brakes is an organization of 500 employees. The remote sales offices have 84 employees and the remainder are located at the Jake's Brakes headquarters. Jake's converted to a Cisco Unified Communications Manager IP phone system earlier this year. Jake's has deployed Cisco Unified Communications Manager Express at each remote sales office and a small Cisco Unified Communications Manager cluster at the Jake's headquarters. Currently, there are no overlapping extension numbers in the Jake's dial plan and all calls are placed over the PSTN. The system is fully functional and includes Cisco Unity at the headquarters and Cisco Unity Express voice mail at the remote sales offices. They have two T1 s to the PSTN and a single T1 to a local service provider for Internet access. A fourth and fifth T1 will connect the Ajax campus to the new Tulsa campus. These two T1 swill carry voice and data traffic between Ajax and Jake's. In a distributed call processing deployment, how should a dial plan be configured to support failover if the gatekeeper rejects a call because of insufficient bandwidth? There may be times when the IP WAN is out of capacity. What Cisco Unified Communications Manager technology should be deployed so that calls can be completed when the WAN is at full capacity? 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? Ajax needs to provide technical support outside of normal operating hours. They would like to deploy a small test call center to develop the skills necessary to provide phone, chat, and e-mail support. Ajax wants to start with five agents. Which two connection types would be applicable for use with the planned contact center? (Choose two.) Ajax has decided to open regional sales offices to put their sales staff closer to their customers. The new offices are located in Oakland, Denver, Chicago, and New York. The Northwest and Southeast regional sales offices are located the Redmond and Atlanta facilities. The sales offices will connect to the Ajax campus via a Frame Relay network. Each site will have a PSTN gateway for local and emergency calls. All calls to and from the regional offices as well as long distance calls should use the IP WAN as much as possible. Call processing and voice mail will remain centralized Atlanta. H.323 gateways will be deployed at the remote sites for PSTN access. The Ajax central campus and regional sales offices will use the G.711 codec locally. The G.729 codec will be used when calls cross the WAN, and cRTP will be implemented on each link. The voice-mail system only supports G.711. The DID ranges of the Oakland, Denver, and Chicago sales offices overlap over the last seven digits of the ranges. Ho can an abbreviated inter site dial plan be developed so that extension 1023 in Oakland doesn't overlap with extension 1023 in Denver and Chicago? 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. You are going to implement remote site survivability for the Redmond site and must decide between SRST and Cisco Unified Communications Manager Express in SRST mode. Which of the following statements is true? Consider the following customer attributes and choose the correct IP telephony call processing model: - a large campus that spans two PSAP areas - a single group of buildings connected via fiber optics - data VPNs that support multiple contractors and suppliers - a fully developed three-tier network hierarchy - connectivity to two different service providers for Internet access The Ajax server administrator is interested in determining how the Cisco Unified Communications Manager servers can be monitored and if the system has been compromised. Which two methods can be used to support these requirements and still maintain a high degree of security? (Choose two.) 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. With respect to the function of low latency queuing, how does the operation of the PQ differ from the CBWFO? There may be times when the IP WAN is out of capacity. What Cisco Unified Communications Manager technology should be deployed so that calls will not cross the WAN when the WAN is at full capacity? 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. During the migration from Token Ring to Ethernet, routers will be deployed to allow access between the existing Token Ring and the new Ethernet networks. Where in the network should these routers be deployed?