Download New Latest (May) Cisco 642-457 Actual Tests 31-40

Ensurepass

 

QUESTION 31

Refer to the exhibit. A user in RTP calls a phone in San Jose during congestion with Call Forward No Bandwidth (CFNB) configured to reach cell phone 4085550150. The user in RTP sees the message “Not Enough Bandwidth” on their phone and hears a fast busy tone. Which two conditions can correct this issue? (Choose two.)

 

clip_image001

 

A.

The calling phone (RTP) needs to have AAR Group value of AAR under the AAR Settings.

B.

The called phone (San Jose) needs to have AAR Group value of AAR under the AAR Settings.

C.

The calling phone (RTP) needs to have the AAR destination mask of 914085550150 configured under the AAR Settings.

D.

The calling phone (RTP) needs to have the AAR destination mask of 4085550150 configured under the AAR Settings.

E.

The called phone (San Jose) needs to have the AAR destination mask of 914085550150 configured under the AAR Settings.

F.

The called phone (San Jose) needs to have the AAR destination mask of 4085550150 configured under the AAR Settings.

 

Answer: BF

Explanation: Incorrect answer: ACDE

Explanation: Automated alternate routing (AAR) provides a mechanism to reroute calls through the PSTN or other network by using an alternate number when Cisco Unified Communications Manager blocks a call due to insufficient location bandwidth. With automated alternate routing, the caller does not need to hang up and redial the called

 

 

 

party.

Link:http://www.cisco.com/en/US/docs/voice_ip_comm/cucmbe/admin/8_6_1/ccmcfg/b03a ar.html

 

 

QUESTION 32

Which two statements describe RSVP-enabled locations-based CAC? (Choose two.)

 

A.

RSVP can be enabled selectively between pairs of locations.

B.

Using RSVP for CAC simply allows admitting or denying calls based on a logical configuration that is ignoring the physical topology.

C.

RSVP is topology aware, but only works with full mesh networks.

D.

An RSVP agent is a Media Termination Point that the call has to flow through.

E.

RSVP and RTP are used between the two endpoints.

 

Answer: AD

Explanation: Incorrect Answer: BC

The RSVP policy that is configured for a location pair overrides the default interlocation RSVP policy that configure in the Service Parameter Configuration window. RSVP supports audio, video, and data pass-through. Video data pass-through allows video and data packets to flow through RSVP agent and media termination point devices Link:https://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmsys/a02rsv p.html#wp1070214

 

 

QUESTION 33

What is the default value for the Drop Ad Hoc Conference service parameter? (Source:Preventing Toll Fraud)

 

A.

Never

B.

When No On-Net Parties Remain in the Conference

C.

When No Off-Net Parties Remain in the Conference

D.

Drop Ad Hoc Conference When Creator Leaves

 

Answer: A

Explanation: Incorrect answer: BCD

To use the additional functionality that advanced ad hoc conferencing provides, Cisco recommends that you set this service parameter to Never. Any other setting can result in unintentional termination of a conference.

Link:https://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmsys/a05co nfb.html

 

 

QUESTION 34

Refer to the exhibit.

 

clip_image002

 

 

 

clip_image003

 

Assume that NANP is being used and 9 is used for PSTN access code Long distance national calls are preceded with 1.

 

How should the HQ Cisco Unified Communications Manager be configured for calls to 3XXX to be sent to the gatekeeper at 1 0 1 6 1 with PSTN backups?

 

A.

Configure a route pattern for 3XXX Assign this route pattern to a route list that points to two route groups The first route group contains the H 225 trunk The second route group contains the MGCP gateway with prefix digits 1 408555 for the outgoing called number.

B.

Configure a route pattern for 1#3XXX Assign this route pattern to a route list that points to a route group that lists the H 225 trunk as first choice and the MGCP gateway as a second choice.

C.

Configure a route pattern for 4085543XXX. Assign this route pattern to a route list that points to two route groups. The first route group contains the H 226 trunk The second route group contains MGCP gateway.

D.

Configure a route pattern for 3XXX Assign this route pattern to a route list that points to two route groups The first route group contains the H 225 trunk The second route group contains MGCP gateway with prefix digits 91 408554 for the called number.

 

Answer: A

Explanation:http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmcfg/b03rtgrp.html #wpxref46617

 

 

QUESTION 35

While operating in SRST, what is needed to route calls outside of the remote site location to the PSTN?

 

A.

SIP trunk

B.

CallManager route patterns

C.

translation patterns

D.

POTS dial peers

E.

VOIP dial peers

 

Answer: D

Explanation: Incorrect answer: ABCE

in time of srst configuration on router, please configure a dial-peer so that call flow in SRST mode.

Link:

 

 

QUESTION 36

When an incoming PSTN call arrives at an MGCP gateway, how does the calling number get normalized to a global E.164 number with the + prefix in Cisco Unified Communications Manager?

 

A.

Normalization is done using translation patterns.

B
.

Normalization is done using route patterns.

C.

Normalization is done using the gateway incoming called party prefixes based on number type.

D.

Normalization is done using the gateway incoming calling party prefixes based on number type.

E.

Normalization is achieved by local route group that is assigned to the MGCP gateway.

 

Answer: D

Explanation: Incorrect answer: ABCE

Configuring calling party normalization alleviates issues with toll bypass where the call is routed to multiple locations over the IP WAN. In addition, it allows Cisco Unified Communications Manager to distinguish the origin of the call to globalize or localize the calling party number for the phone user.

Link:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmfeat/fscallpn.html

 

 

QUESTION 37

Which statement about Service Advertisement Framework is true?

 

A.

SAF requires that the EIGRP be configured on all routers, including non-SAF routers.

B.

SAF requires that the EIGRP be configured only on SAF routers. Non-SAF routers act as an IP cloud.

C.

SAF has no dependency on the underlying routing protocol, as long as it is a dynamic routing protocol. Static routes are not supported.

D.

SAF operates on any dynamic or static IP routing configuration. SAF is totally independent of the underlying routing protocol.

 

Answer: D

Explanation:Because Cisco SAF is independent of IP routing and uses underlying Cisco routing technology to distribute service advertisements in a reliable and efficient manner, Cisco SAF will run in networks over any routing protocol they may have in place such as Enhanced Interior Gateway Routing Protocol (EIGRP), Open Shortest Path First (OSPF), Exterior Border Gateway Protocol (EBGP) over an MPLS service, or static routing (Figure

2).

http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6554/ps6599/ps10822/white paper_c11-636604.html

 

 

QUESTION 38

Refer to the exhibit.

 

 

 

clip_image004

 

What should the destination IP address be configured as on the HQ and BR1 SIP trunks?

 

A.

The HQ SIP trunk destination IP address should be 10.1.6.10. The BR1 SIP trunk destination IP address should be 10.1.5.10.

B.

The destination IP address is not configurable. Each cluster will learn about the remote trunk IP address through SAF learned routes.

C.

The destination IP address will be learned automatically and configured on the SIP trunks after the Cisco Unified Communications Managers discover themselves.

D.

The HQ SIP trunk destination IP address should be the HQ SAF Forwarder IP address. The BR1 SIP trunk destination IP address should be the BR1 SAF Forwarder IP address.

 

Answer: B

Explanation: Incorrect answer: ACD

The gatekeeper changes the IP address of this remote device dynamically to reflect the IP address of the remote device.

Link:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmsys/a08trnk.html

 

 

QUESTION 39

You have been asked to deploy Cisco Extension Mobility Cross Cluster for a distributed call

 

 

processing environment. During the initial extension mobility login request, how does the visiting cluster determine if the user is a local user or a remote user?

 

A.

by using a third-party automatic provisioning tool to verify user ID

B.

by broadcasting a request to all clusters to verify the user type

C.

from user IDs that are created by default when the user logs in

D.

by using Extension Mobility Cross Cluster Session Initiation Protocol (SIP) trunks

E.

by verifying against the local database

F.

by verifying the visiting Trivial File Transfer Protocol

 

Answer: E

 

 

QUESTION 40

Refer to the exhibit.

 

clip_image005

 

To permit three G.729 calls, what should the bandwidth value be for the ip rsvp bandwidth command?

 

A.

32

B.

48

C.

64

D.

88

E.

128

 

Answer: D

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