VOIP is being implemented in the Company network and you need to assess the need for QoS.   Which of the following network problems would indicate a need to implement QoS features？（）A、Mis-routed packets  B、Excess jitterC、Delay of critical trafficD、Packet

第1题：

第2题：

Which two statements about the QoS policy generation phase of the Cisco SDM QoS wizard are true？ （）

• A、 The SDM QoS wizard will create two real-time traffic classes to handle VoIP and voice signaling packets.
• B、 The SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， and video packets.
• C、 The SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packets.
• D、 The SDM QoS wizard will create two business-critical traffic classes to handle transactional and network management packets.
• E、 The SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packets.
• F、 The SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets.

第3题：

第4题：

VOIP has been implemented at the main office of the Company network. Which two statements  are true about voice packets in a LAN？（）

• A、 Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media  portion of the VoIP communication.  
• B、 Voice traffic data flow involves large volumes of large packets.  
• C、 Because a packet loss involves a small amount of data, voice traffic is less affected by packet  losses than traditional data traffic is.  
• D、 Voice packets are encapsulated in TCP segments to allow for proper sequencing during  delivery. 
• E、 Voice packets are very sensitive to delay and jitter. 

第5题：

You are a network administrator and you need to implement a routing protocol on your network that provides: * Scalability * VLSM support * Minimal overhead * Support for connecting networks using routers of multiple vendors Which of the following routing protocol would best serve your needs?（）

• A、VTP
• B、RIP version 1
• C、EIGRP
• D、OSPF
• E、IGRP
• F、CDP

第6题：

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

第7题：

You need to implement a high availability design in the Company routed network.  Which protocol  allows for the automatic selection and simultaneous use of multiple available gateways as well as  automatic failover between those gateways？（）

• A、 VRRP
• B、 GLBP
• C、 IRDP
• D、 HSRP
• E、 None of the other alternatives apply

第8题：

第9题：

VOIP is being implemented in the network and you need to assess the need for QoS. Which of thefollowing network problems would indicate a need to implement QoS features？（）

• A、Mis-routed packets
• B、Excess jitter
• C、Delay of critical traffic
• D、Packet loss due to congestion
• E、Data link layer broadcast storms
• F、FTP connections unsuccessful

第10题：

You need to determine where the trust boundaries will be in a new Company VOIP design.  Which  two statements are true about these trust boundaries？（）

• A、Trust boundaries are configured in the core of the network to provide the most efficient  forwarding based upon QoS markings，
• B、Setting trust boundaries at the edge of the network allows intermediate hop devices to  administer QoS policies without detailed packet identification.
• C、Trust boundaries are used to determine which QoS mechanism will be applied to the traffic.  
• D、At the trust boundaries， the untrusted traffic will be marked with a new QoS value appropriate  for the policy in place at the point where the traffic entered the campus network.  
• E、Trust boundaries define the firewall rules for QoS admission into a network.