2013 Latest CCNA Voice 640-461 Real Exam Question 6-10

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QUESTION 6
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.
Correct Answer: D Section: CUCM Explanation
Explanation/Reference:
Step 1 – Choose Call Routing > Route Plan Report.
The Route Plan Report window displays. Use the three drop-down list boxes to specify a route plan report that lists all unassigned DNs.
Step 2 – Three ways exist to delete directory numbers:
a. Click the directory number that you want to delete. When the Directory Number Configuration window displays,click Delete.
b. Check the check box next to the directory number that you want to delete. Click Delete Selected.
c. To delete all found unassigned directory numbers, click Delete All Found Items.
A warning message verifies that you want to delete the directory number.
Step 3 – To delete the directory number, click OK. To cancel the delete request, click Cancel.

QUESTION 7
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.
Correct Answer: B Section: IP Phone Explanation
Explanation/Reference:
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.

QUESTION 8
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.
Correct Answer: C Section: QoS Explanation
Explanation/Reference:
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.

QUESTION 9
Which description describes the weighted fair 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.
Correct Answer: C Section: QoS Explanation
Explanation/Reference:
WFQ provides traffic priority management that automatically sorts among individual traffic streams without requiring that you first define access lists. WFQ can also manage duplex data streams such as those between pairs of applications, and simplex data streams such as voice or video. There are two categories of WFQ sessions: high bandwidth and low bandwidth. Low-bandwidth traffic has effective priority over high-bandwidth traffic, and high-bandwidth traffic shares the transmission service proportionally according to assigned weights.
When WFQ is enabled for an interface, new messages for high-bandwidth traffic streams are discarded after the configured or default congestive messages threshold has been met. However, low-bandwidth conversations, which include control message conversations, continue to enqueue data. As a result, the fair queue may occasionally contain more messages than its configured threshold number specifies.
With standard WFQ, packets are classified by flow. Packets with the same source IP address, destination IP address, source Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) port, or destination TCP or UDP port belong to the same flow. WFQ allocates an equal share of the bandwidth to each flow. Flow-based WFQ is also called fair queueing because all flows are equally weighted.
The Cisco IOS software provides two forms of WFQ:
.
Standard WFQ, which is enabled by default on all serial interfaces that run at or below 2 Mbps, and can run on all Cisco serial interfaces.
.
Distributed WFQ, which runs only on Cisco 7000 series routers with a Route Switch Processor-based RSP7000 interface processor or Cisco 7500 series routers with a Versatile Interface Processor-based VIP2-40 or greater interface processor. (A VIP2-50 interface processor is strongly recommended when the aggregate line rate of the port adapters on the VIP is greater than DS3. A VIP2-50 interface processor is required for OC-3 rates.)
Link:
http://www.cisco.com/en/US/docs/ios/12_0/qos/configuration/guide/qcwfq.html

QUESTION 10
Which utility should you use when you need to add a large number of users into Cisco Unified Communications Manager?
A. Cisco Unified User Administration
B. Application User CAPF Profile
C. Cisco Unified Communications Manager Bulk Administration Tool
D. Cisco Unified Telephony User Administration
Correct Answer: C Section: CUCM Explanation
Explanation/Reference:
The Cisco Unified Communications Manager Bulk Administration Tool (BAT), a web-based application, performs bulk transactions to the Cisco Unified Communications Manager database. BAT lets you add, update, or delete a large number of similar phones, users, or ports at the same time. When you use Cisco Unified Communications Manager Administration, each database transaction requires an individual manual operation, while BAT automates the process and achieves faster add, update, and delete operations.
Link:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/bat/7_1_2/t01batow.html

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