單項選擇題

Refer to the exhibit. Which statement is true about a voice VLAN?()

A.Physically the voice network and the data network are separate.
B.The voice traffic will normally be on a different IP subnet than will the data traffic.
C.End user intervention is necessary to place the phone into the proper VLAN.
D.The same security policy should be implemented for both voice and data traffic.
E.The data VLAN must be configured as the native VLAN.


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1.多項選擇題Which three are characteristics of voice traffic in the Company VOIP campus network?()

A.TCP retransmits
B.UDP priority
C.Bursty
D.Delay sensitive
E.Greedy
F.Drop sensitive

2.多項選擇題

Refer to the exhibit.  
What are three of the basic components of a VoIP network?()

A.software voice applications
B.multipoint control unit (MCU)  
C.gatekeeper  
D.call agent
E.interactive voice response (IVR) systems  
F.softphones

3.多項選擇題Which three QoS mechanisms can be configured to improve VoIP quality on a converged  network?()

A.The use of a queuing method that will give VoIP traffic strict priority over other traffic  
B.The use of RTP header compression for the VoIP traffic.
C.The proper classification and marking of the traffic as close to the source as possible
D.The use of 802.1QinQ trunking for VoIP traffic
E.The use of WRED for the VoIP traffic

4.單項選擇題

You need to troubleshoot some problems in the Company VOIP network associated with jitter.  
What is the cause of jitter?  ()

A. Packet drops
B. Transmitting too many small packets
C. Variable queue delays
D. Compression
E. None of the other alternatives apply

5.多項選擇題

The Lightweight Access Point Protocol (LWAPP) is in use within the Company wireless network. 
 Which two statements correctly describe features of this protocol? ()

A. Control traffic between an access point and a controller is encrypted within LWAPP.
B. Data traffic between an access point and a controller is encrypted within LWAPP.
C. Layer 3 mode packets are transmitted in TCP frames.
D. Data traffic between an access point and a controller is encapsulated within LWAPP.
E. VLAN tagging and QoS markings are applied at the access point.

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