A.gatekeeper multizone
B.Call Admission Control （CAC）
C.Automatic Alternate Routing （AAR）
D.Survivable Remote Site Telephony （SRST）
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A.VPN traffic needs to be classified based on the Layer2 header information
B.VPN traffic needs to be classified based on the IP precedence or DSCP
C.VPN traffic needs to be classified based on IP flow or Layer 3 information， such as source and destination IP address
D.VPN traffic with Authentication Header （AH） needs to preserve the ToS byte
A.the two methods of authentication using the WEP encryption are open and shared key
B.the 802.11 standard defines WEP security using 128-bit keys
C.WEP can provide stronger authentication through the use of LEAP， PEAP， or EAP-FAST
D.WEP is a scalable encryption solution that uses static keys for authentication
E.WEP security provides only one-way authentication
F.WEPv2 offers improved encryption by replacing the RC4 encryption mechanism with the AES （symmetric block cipher） mechanism
A.enabling modular QoS over Frame Relay
B.enabling Real-Time Transport Protocol （RTP） header compression
C.enabling distributed compressed Transmission Control Protocol
D.enabling latency and jitter reduction for Transmission Control traffic
E.enabling TCP header compression
A.Cisco IOS gateways provide services such as address translation and network access control for the devices on the network
B.Cisco IOS gateways provide services such as bandwidth management and accounting
C.Cisco IOS gateways provide media termination and signal translation between the public switched telephone network （PSTN） and IP networks
D.Cisco IOS gateways provide zone management for all registered endpoints in the network
A.the seventh call is routed via the PSTN
B.the call is denied and the original six （6） calls remain
C.the call is completed and the first call is dropped
D.the call is completed， but all calls have quality issues
E.the call is completed but the seventh call has quality issues
A.automated alternate routing （AAR）
B.Cisco CallManager Attendant Console
C.real-time protocol （RTP）
D.Survivable Remote Site Telephony （SRST）
A.the first step when using the SDM QoS wizard is to select the inbound interface on which the QoS policy must be applied
B.the SDM QoS wizard can be used to optimize LAN， WAN， and VPN interfaces
C.he SDM QoS wizard supports network-based application recognition （NBAR） to provide deep and stateful packet inspection
D.he SDM QoS wizard will apply custom queuing and priority queuing policies to the identified interfaces
E.he SDM QoS wizard will apply low latency-queuing，custom-queuing and priority-queuing policies to the identified interfaces
F.to create and manage the QoS settings， the user must select the QoS wizard task under the Monitor option
A.gatekeeper
B.Call Routing
C.Call Admission Control
D.Digital Signal Processors
A.the packetization size
B.the serialization of the interface
C.the quantization
D.the packet rate
E.the UDP overhead
F.the TCP overhead
A.service guarantee
B.traffic that is divided into classes
C.not scalable to large implementations
D.QoS mechanisms that are used without prior signaling
E.applications that signal their particular QoS and bandwidth requirements
最新試題
Which three functions can an Integrated Services Router perform in a VoIP network？（）
Which two characteristics are common between traffic policing and traffic shaping？（）
Within the WMM policy， how many default QoS radio access categories are there？（）
For delay sensitive traffic， what are the three best ways that are used to prevent packet loss？ （）
Which two QoS classification and marking statements are true？ （）
What are two reasons to implement H·323 gatekeepers？（）
In the design of a QoS solution， which two factors should be taken into consideration？（）
Which statement is true about the Call Admission Control （CAC） feature in VoIP networks？（）
In a VoIP network， which type of interface would an analog fax machine connect to？（）
Which three practices are important to the implementation of a DiffServ QoS architecture？（）