A. 8
B. 5
C. 4
D. 3
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A. Resource Reservation Protocol (RSVP)
B. first-in, first-out (FIFO)
C. best-effort
D. CBWFQ
E. IntServ
F. DiffServ
A. Packets can arrive out of order.
B. Packets must take the same path to the destination.
C. Once packets are received at the destination router, the router performs sampling to ensure the quality of the voice traffic.
D. Packets can experience varying delays across the network.
E. Packets containing voice samples are sequentially numbered by default, allowing for reordering upon arrival at the terminal router along the path.
A. Compress payload.
B. Use header compression.
C. Increase link capacity.
D. Use random early detection.
E. Guarantee bandwidth to fragile flows.
F. Implement network-based application recognition.
A. connects traditional telephony devices to voice over IP infrastructure
B. converts analog signals to digital format
C. performs voice compression
D. performs call processing
E. performs dial plan administration
F. performs signaling and device control
A. The rate of traffic is measured and compared to a configured policy.
B. Classification is used to differentiate traffic.
C. Traffic is marked and sent out according to priority.
D. Both can be applied to inbound and outbound traffic.
E. Both buffer traffic to ensure a predetermined traffic rate.
F. Both drop traffic that is above a predetermined traffic rate.
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 802.1Q standard uses a three bit field referred to as the user priority bits (PRI) to mark packets as belonging to a specific CoS.
A. packetization
B. quantization
C. decoding
D. sampling
A. to eliminate the need for VoIP gateways
B. to scale a VoIP installation with multiple gateways
C. to provide call admission control and limit the number of simultaneous calls on the network
D. to meet the requirement to control H·323 gateways on a LAN
E. to accept call requests and reduce the load on the gateway
A. codec
B. link speed
C. Layer 2 encapsulation
D. packet overhead (IP/UDP/RTP)
E. link delay
F. total number of simultaneous calls that are allowed
A. Use WFQ, CBWFQ, and LLQ to prioritize delay-sensitive packets.
B. Use WFQ, CBWFQ, and LLQ 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.
最新試題
What are three Cisco Unified CallManager features? ()
In a VoIP network, which type of interface would an analog fax machine connect to?()
When QoS levels in the Cisco Wireless Control System (WCS) are entered, which profile names are used to identify the access categories?()
Which three functions can an Integrated Services Router perform in a VoIP network?()
What is the term that is used to describe the process of converting a signal from digital to analog?()
Which two VoIP capabilities are utilized when the CallManager and the gateway are configured for Survivable Remote Site Telephony?()
Which two functions can be provided by an Integrated Services Router (ISR) in a VoIP network?()
What is an advantage of the IntServ QoS model?()
For delay sensitive traffic, what are the three best ways that are used to prevent packet loss? ()
Which of the items stated is typically the most expensive method of improving QoS across WAN links?()