多项选择题Which two statements are true about the function of CAC? ()

A. CAC provides guaranteed voice quality on a link.
B. CAC artificially limits the number of concurrent voice calls.
C. CAC is used to control the amount of bandwidth that is taken by a call on a link.
D. CAC prevents oversubscription of WAN resources that is caused by too much voice traffic.
E. CAC allows an unlimited number of voice calls while severely restricting, if necessary, other forms of traffic.
F. CAC solves voice congestion problems by using QoS to give priority to UDP traffic.


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1.多项选择题Which two statements regarding the Wireless LAN Solution Engine (WLSE) are true? ()

A. To support fault and policy reporting, the WLSE requires a Wireless Control System (WCS).
B. When WLSE detects an AP failure, it automatically increases the power and cell coverage of nearby APs.
C. WLSE requires the 2700 location appliance to offer location tracking.
D. WLSE can locate rogue APs and automatically shut them down.
E. WLSE configuration is done using the command line interface (CLI) or a WEB based template.

2.多项选择题Which two QoS statements are true about the use of the SDM QoS wizard? ()

A. Business-critical traffic includes VoIP and voice signaling packets.
B. SDM can be used to configure a basic QoS policy for incoming traffic on WAN interfaces and IPsec tunnels.
C. SDM can provide QoS for real-time traffic and business-critical traffic.
D. SDM creates a custom-queuing (CQ) or a priority-queuing (PQ) policy.
E. SDM creates a low latency queuing (LLQ) service policy with its associated classes.
F. When allocating bandwidth, values can be entered in either bandwidth percentage or kilobytes per second (kBps).

4.单项选择题The route processor is critical to the operation of a network, and any service disruption to the route processor can result in network outages. Which QoS tool canprotectroute processor traffic?()

A.control plane policing
B.data plane policing
C.network-based application recognition (NBAR)
D.service plane policing
E.management plane policing

6.单项选择题

Refer to the exhibit. Which statement is true about the function of the frame-relay voice-bandwidth 24000 command that is shown in the partial configuration?()

A.It limits the total bandwidth available on the Frame Relay link.
B.It provides call admission control by limiting the number of voice calls over the Frame Relay link
C.It sets up IP RTP Priority features that reserve bandwidth for voice traffic flows.
D.It is functionally equivalent to configuring LLO.
E.It limits the bandwidth that is taken by individual voice calls to 24000 b/s.

7.多项选择题Which three options are prerequisites to configuring Cisco AutoOoS?()

A.Cisco Express Forwarding (CEF) must be globally enabled.
B.Prior to the enabling of the Cisco AutoOoS feature, the bandwidth command must be applied on all interfaces or subinterfaces.
C.After the enabling of the Cisco AutoOoS feature, the bandwidth command must be applied on all interfaces or subinterfaces .
D.OoS policies must be enabled on all interfaces that will participate in the AutoOoS configuration.
E.An IP address must be configured on all low-bandwidth interfaces (768 kb/s or lower) that will participate in the AutoOoS configuration
F.An IP address must be configured on all interfaces that will participate in the AutoOoS configuration

8.多项选择题What are three factors used to determine the amount of bandwidth that is required for a single VoIP call?()

A.codec
B.link speed
C.Layer 2 encapsulation
D.packet overhead (IP/UDP/RTP)
E.link delay
F.total number of simultaneous calls that are allowed

9.单项选择题Which statement describes the distributed call control model in VoIP networks?()

A.The gateway voice-capable device is configured to support call control directly performing call setup, call maintenance, and call teardown
B.The gateway voice-capable device has a local call routing table configured through a routing protocol.
C.The gateway voice-capable device relies on a call agent to support call control.
D.The gateway voice-capable device relies on a gatekeeper to support call setup, call maintenance, and call teardown.

10.多项选择题Which two pairings match the application with the correct Cos value?()

A.CoS 0 = Best-Effort Data
B.CoS 1 = Best-Effort Data
C.CoS 3 = High Priority
D.CoS 4 = High Priority Data
E.CoS 5 = Voice Bearer
F.CoS 7 = Voice Bearer

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