A.Each subinterface has its own hardware queue and can experience congestion just like its main interface
B.Hardware queuing is only used if the software queues are experiencing congestion.
C.Hardware queues and software queues are not used concurrently.
D.The hardware queuing system always uses the FIFO queuing mechanism.
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A.RTP multiplexing is used to keep multiple phone conversations separate
B.RTP provides end-to-end delivery services for voice traffic.
C.UDP is used to ensure a reliable transmission from sender to receiver.
D.RTP is used to provide resource reservation for the voice stream.
E.UDP provides multiplexing of multiple phone conversations.
A.link efficiency
B.admission control
C.classification and marking
D.shaping and policing
E.congestion avoidance using the RTP protocol
F.resource reservation using the RSVP protocol
A.802.1X
B.Cisco Temporal Key Integrity Protocol (CKIP)
C.Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling (EAP-FAST)
D.Cisco Message Integrity Check (CMIC)
E.One-Time Passwords (OTP)
F.Advanced Encryption Standard (AES)
Refer to the exhibit. The network has been configured with H.323 gateways and gatekeepers as shown. Which statement is true when a call is placed?()
A.A gatekeeper is contacted to determine the correct local gateway to use.
B.A gateway will receive the call and forward a call request to the local gatekeeper.
C.A gateway will receive the call and forward a call request to the gatekeeper on the other side of the WAN
D.A gatekeeper will receive the call and forward a call request to the remote gateway.
A.programming interface to external applications
B.FXS and FXO port negotiation
C.AutoQos VoIP trust boundaries
D.signaling and device control
E.LLO for voice and video traffic
F.directory and XML services
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.
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.
最新試題
Which three benefits are realized by implementing Wireless LAN Solution Engine (WLSE)?()
Which three user interfaces exist for the Cisco WLAN Controllers?()
What are the three models of quality of service (QoS) in a network?()
Which two statements about the Wi-Fi Multimedia (WMM) standard are true?()
Which two statements are true about Voice over IP (VoIP) packet delivery in a digital infrastructure? ()
When QoS levels in the Cisco Wireless Control System (WCS) are entered, which profile names are used to identify the access categories?()
Which two VoIP capabilities are utilized when the CallManager and the gateway are configured for Survivable Remote Site Telephony?()
Within the WMM policy, how many default QoS radio access categories are there?()
Which two QoS classification and marking statements are true? ()
For delay sensitive traffic, what are the three best ways that are used to prevent packet loss? ()