A.WRED can selectively discard lower priority traffic when the interface becomes congested and can provide differentiated performance characteristics for different classes of service.
B.Resource Reservation Protocol （RSVP） and WRED cannot be configured on the same interface.
C.WRED will throttle back voice traffic only as a last resort.
D.If the average queue length is greater than the minimum threshold but less than the maximum threshold， then based on the drop probability， WRED will either queue the packet or perform a random drop.
E.WRED statistically drops more packets from low-bandwidth users than high-bandwidth users. Therefore， traffic sources that generate the least traffic are more likely to be slowed down than traffic sources that generate the most traffic.
F. WRED treats non-IP traffic as precedence 4.
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A.SDMVoice
B.SDMSignal
C.SDMTrans
D.SDMManage
E.SDMRout
F.SDMBulk
A.Traffic bursts are smoothed out by queuing the excess traffic to produce a steadier flow of data
B.Excess traffic is buffered so that the traffic remains within the desired rate.
C.Packets that conform to traffic policies are not delayed.
D.Packet marking is available and allows excess packets to be re-marked with a lower priorit
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
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
最新試題
The Cisco SDM will create a QoS policy that provides services to two types of traffic. Which two statements indicate the default QoS parameters that are created by SDM？（）
When Cisco SDM is used to generate QoS policy， various QoS classes will be created and assigned a percentage of the interface bandwidth. Which three statements indicate the default bandwidth values that are assigned by SDM for outgoing traffic on a WAN interface？ （）
End-to-end QoS is maintained in the Cisco WLAN deployment model by utilizing what parameter in lieu of 802.1p？（）
What are three Cisco Unified CallManager features？ （）
Within the WMM policy， how many default QoS radio access categories are there？（）
Which two QoS classification and marking statements are true？ （）
Which set of classes correctly identifies the four traffic classes， from highest priority to lowest priority， specified in the 802.11e standard？（）
In the design of a QoS solution， which two factors should be taken into consideration？（）
Which two statements are correct about the signaling methods that are utilized for transmitting voice？ （）
SDM creates a low latency queuing （LLQ） service policy with its associated classes. What are the two types of low latency queuing available using the SDM QoS wizard？（）