Tag Archives: 640-461 Study Guide

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QUESTION 1
Which two options are features in Cisco Unified Presence? (Choose two.)

A. IP Phone Messenger
B. Native Presence
C. BLF speed-dial
D. Enterprise Instant Messaging
E. BLF speed-dial pickup

Answer: B,D

Explanation:

QUESTION 2
An end user reports that they are unable to control their Cisco IP phone using Cisco Unified
Personal Communicator and cannot make any calls. Which situation can cause this issue?

A. The Cisco Unified Personal Communicator is not registered in the Cisco Unified Presence
server.
B. The LDAP integration is incorrect.
C. The Cisco Unified Personal Communicator is configured in desk-phone mode.
D. The Allow Control of Device from CTI checkbox in the device configuration on Cisco Unified
Communications Manager is disabled.
E. The Allow Control of Device from CTI checkbox in the device configuration on the Cisco Unified
Presence is disabled.

Answer: D

Explanation: Incorrect
Answer: ABC
Link :
https://www.cisco.com/en/US/docs/voice_ip_comm/cups/8_0/english/install_upgrade/deployment/g
uide/dgclient.html

QUESTION 3
Which description describes the low latency queuing algorithm?

A. Empty queue 1. If queue 1 is empty, empty queue 2, then empty queue 3, unless a packet for a
higher queue arrives.
B. An administrator defines the traffic classes based on match criteria, including protocols, access
control lists, and input interfaces.
C. A flow-based algorithm that simultaneously schedules interactive traffic to the front of a queue
to reduce response time and fairly shares the remaining bandwidth among high-bandwidth flows.
D. This feature brings strict priority queuing to CBWFQ.
E. Packets are placed into a single queue and serviced in the order they were received.

Answer: D

Explanation: Incorrect
Answer: ABC
A & C denotes to weighted fair queue or DWFQ. B denotes to CBWFQ (class based weighted fair
queue).
Link:
https://www.cisco.com/en/US/docs/ios/12_1/qos/configuration/guide/qcdconmg.html#wp1001019

QUESTION 4

Answer:

Explanation:

QUESTION 5
An administrator wants to locate and remove all unassigned directory numbers on the Cisco
Unified Communications Manager system. Which method is the best method to accomplish this
task?

A. Choose Device > Phone. Search all phones and remove the undesired directory numbers.
B. Use the Dial Plan Installer to remove the directory numbers.
C. Use the Disaster Recovery System to restore only valid directory numbers.
D. Choose Call Routing > Route Plan Report, choose the Unassigned DN drop-down menu, and
then remove all orphaned directory numbers.
E. Choose Device > Device Settings > Device Defaults and use the wizard to locate and remove
the orphaned directory numbers.

Answer: D

Explanation: Incorrect answer: ABCE

A. Assigned phone could be deleted from device>phone option. E. Device defaults are used to
updating devices.
Link:
https://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_5_1/ccmcfg/b03rtrep.html#wp10
24696

QUESTION 6
When troubleshooting a phone that is unable to get an IP address from a DHCP server, what is
the first thing to check for on the phone?

A. Make sure that DHCP Enabled is disabled on the phone.
B. Make sure that the phone is getting the proper VLAN information.
C. Make sure that the TFTP server address is correct on the phone.
D. Make sure that the DHCP scope has enough addresses left in the range.
E. Make sure the phone has the correct phone load ID.

Answer: B

Explanation: Incorrect
Answer: ACDE
IP phones rely on a TFTP-based process to acquire configuration files, software images, and other
endpoint-specific information. The Cisco TFTP service is a file serving system that can run on one
or more Unified CM servers.
Link: https://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/8x/netstruc.html#wp1185040

QUESTION 7
Which issue does CAS signaling on a T1 circuit create?

A. Signaling bits are subtracted from each frame, which causes a significant loss of voice quality.
B. An extra signaling bit is added to the sixth frame to carry signaling information.
C. A signaling bit is subtracted from every sixth frame to carry signaling information.
D. Signaling bits are added to the signaling stream to create extended super frames.

Answer: C

Explanation: Incorrect answer: ABD
Each T1 channel carries a sequence of frames. These frames consist of 192 bits and an additional
bit designated as the framing bit, for a total of 193 bits per frame. Super Frame (SF) groups twelve
of these 193 bit frames together and designates the framing bits of the even numbered frames as
signaling bits. CAS looks specifically at every sixth frame for the timeslot’s or channel’s associated
signaling information
Link:
https://www.cisco.com/en/US/tech/ tk6 52/ tk6 53/technologies_tech_note09186a00800e2560.shtml

QUESTION 8
How does the Cisco Unified Communications Manager Express match an outbound VoIP dial
peer?

A. Outbound dial-peer matching uses the entire string of digits en bloc to match the dial peer with
the longest match.
B. Outbound dial-peer matching is completed on a digit-by-digit basis.
C. It matches outbound dial peers by placing all the dial peers into a hunt group and then uses the
entire dialed number en bloc to match the first dial peer.
D. Cisco Unified Communications Manager Express creates a hunt group that contains all the
configured dial peers and then applies the dial digits in a digit-by-digit manner to match a dial peer.

Answer: A

Explanation: Incorrect answer: BCD
When a router receives a voice call, it selects an outbound dial peer by comparing the called
number (the full E.164 telephone number) in the call information with the number configured as the
destination pattern for the POTS dial peer. The router then strips out the left-justified numbers
corresponding to the destination pattern matching the called number. If you have configured a
prefix, the prefix will be put in
front of the remaining numbers, creating a dial string, which the router will then dial. If all numbers
in the destination pattern are stripped-out, the user will receive (depending on the attached
equipment) adial tone.

QUESTION 9
In which situation are user PINs maintained by the local Cisco Unified Communications servers?

A. Only when the system is using LDAP synchronization.
B. Only when the system is using LDAP authentication.
C. Only when the system is using Global Directory.
D. PINs are always maintained by the local Cisco Unified Communications Manager servers
E. PINs are never maintained by the local Cisco Unified Communications Manager servers.

Answer: D

Explanation: Incorrect answer: ABC
Cisco Unified Communications Manager assigns the system Default Credential Policy to end user
passwords, end user PINS, and application user passwords
Link: https://docwiki.cisco.com/wiki/Cisco_Unified_MeetingPlace_Release_8.0_–
_Configuring_Cisco_Unified_MeetingPlace_Directory_Service#Configuring_the_User_PIN_in_Cis
co_Unified_Communications_Manager

QUESTION 10
An IP phone has a line calling search space and a device calling search space. If a call is made
from the IP phone, which calling search space is used?

A. Neither calling search space is used.
B. The line calling search space takes precedence and is used.
C. The device calling search space takes precedence and is used.
D. The line and device calling search spaces are combined and the line calling search space has
precedence.

Answer: D

Explanation: Incorrect answer: ABC
If you configure a calling search space both on an IP phone line and on the device (IP phone)
itself, Cisco Unified Communications Manager concatenates the two calling search spaces and
places the line calling search space in front of the device calling search space
Link: https://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_0_2/ccmsys/a03ptcss.html

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