A.Queuing introduces equal delays for packets of the same flow， resulting in jitter.
B.When congestion occurs， dropping affects most of the TCP sessions， which simultaneously back off and then restart again.
C.All buffers can temporarily be seized by aggressive flows， and normal TCP flows experience buffer starvation.
D.There is no differentiated drop mechanism. Higher priority traffic is dropped in the same way as best-effort traffic.
E.In TCP starvation， traffic exceeds the queue limit because of the bursty nature of packet networks. A router cannot handle multiple concurrent TCP sessions.
F.Global synchronization occurs because multiple TCP hosts reduce their transmission rates at random intervals in response to packet dropping
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A. If the classification policy is based upon the ToS byte， the qos pre-classify command is required because the ToS byte only appears in the inner IP header.
B. The ToS byte is copied to the outer header by default. Therefore， the qos pre-classify command is not necessary.
C. With GRE encapsulation， the qos pre-classify command is applied on the tunnel interface. This practice allows for different OoS configurations on each tunnel.
D. With GRE encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface.
E. With IPsec encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface.
A. In a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.
B. In an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field
C. In an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.
D. The differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.
E. The 802.10 standard uses a three bitfield referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
Refer to the exhibit. Which two statements accurately describe the pictured WPA wireless LAN controller configuration?（）
A.WPA1 is disabled and WPA2 is enabled.
B.WPA1 is enabled and WPA2 is disabled.
C.WPA1 is enabled and WPA2 is enabled.
D.TKIP is the default parameter for WPA1 andWPA2.
E.AES is the default parameter for WPA1 and WPA2.
F.The default WPA1 and WPA2 parameters are enabled
A.It compresses the Layer 2 payload and marks the packet as a high priority to be transmitted first
B.It fragments larger packets and allows VoIP packets to be transmitted in between them.
C.It stops the transmission of large packets when priority packets arrive.
D.It sends high priority packets in between normal traffic packets.
A.Use WFQ， CBWFO， and LLO to prioritize delay-sensitive packets
B.Use WFO， CBWFO， and LLO to compress the payload.
C.Give TCP packets priority over UDP packets.
D.Use control plane policing for cRTP queuing.
E.Use stacker and predictor to compress the payload.
Refer to the exhibit. On the basis of the configuration that is provided, which statement is true?（）
A.The Auto OoS policies will be attached to the interface.
B.Data about the network traffic will be collected via the use of NBAR-based protocol discovery， and the traffic on the network will be analyzed.
C.The class maps and policy maps will be created and installed on the basis of the information that is collected during the autodiscovery phase
D.Templates will be created that will be used to create policy maps and class maps to configure the OoS features on the network.
A.showip nbar
B.showip nbar pdim
C.show ip nbar port-map
D.show ip nbar protocol-discovery
Refer to the exhibit. Which option correctly describes the order of signaling and call processing events when a branch employee calls headquarters?（）
A.P，S，T，U
B.U，T，S，P
C.S，U，P，T
D.P，U，S，T
E.S，P，U，T
F.S，P，T，U
Refer to the exhibit. Which three options are available when the Cisco Wireless Control System （WCS） discovers rogue access points on the LAN？（）
A.The WCS sends new rouge access point notifications.
B.The WCS locates and monitors rouge access points until they are eliminated or acknowledged.
C.The WCS reconfigures the rouge access point with proper authentication credentials.
D.The WCS sends deauthenticate and disassociate messages to the rouge access point.
E.The WCS contains rouge access points by sending their clients deauthenticate and disassociate messages
F.The WCS sends deauthenticate and disassociate messages to all wireless clients on the network.
A.Asynchronous Transfer Mode （ATM）
B.data-link switching （DLSw）
C.Route Processor Redundancy （RPR）
D.Frame Relay （FR）
E.Metro Ethernet
F.Multiprotocol Label Switching （MPLS）
最新試題
Which three functions can an Integrated Services Router perform in a VoIP network？（）
Which two QoS classification and marking statements are true？ （）
Which Control Plane Policing （CoPP） statement is true？（）
Which statement is true about the Call Admission Control （CAC） feature in VoIP networks？（）
What are three factors used to determine the amount of bandwidth that is required for a single VoIP call？ （）
Which two statements are correct about the signaling methods that are utilized for transmitting voice？ （）
Which two functions can be provided by an Integrated Services Router （ISR） in a VoIP network？（）
What are the three models of quality of service （QoS） in a network？（）
Which three benefits are realized by implementing Wireless LAN Solution Engine （WLSE）？（）
For delay sensitive traffic， what are the three best ways that are used to prevent packet loss？ （）