Note: The answer is for reference only, you need to understand all question.
QUESTION 1
Based on the following 2950 switch configurations, which statement is correct?
no wrr-queue cos-map wrr-queue bandwidth 20 10 70 1 wrr-queue cos-map 4 5 wrr-queue cos-map 1 0 1 2 3 wrr-queue cos-map 3 6 7
A. Queue 1 is setup as the expedite queue.
B. Queue 2 is setup as the expedite queue.
C. Queue 3 is setup as the expedite queue.
D. Queue 4 is setup as the expedite queue.
E. No queue is setup as the expedite queue.

Answer: E
QUESTION 2
Refer to the exhibit. Which three statements are true about the configuration? (Choose three.)
class-map class-1 match ip rtp 2024 1000
class-map class 2 match dscp 5 6 7
policy-map access-group-1-traffic class class-1 shape peak 16000 class class-2
police 8000 1000 conform-action set-dscp-transmit 1 exceed-action set-dscp-transmit 0 violate-action drop
class class-default fair-queue 16 queue-limit 20
interface fastethernet 0/0 service-policy output access-group1-traffic

A.Traffic that is subject to shaping can burst up to 32,000 bps.
B.IP traffic (DSCPs 5, 6, and 7) that is sent on fastethernet 0/0 will be traffic policed.
C.RTP traffic (ports 2024 and 1000) that is sent on fastethernet 0/0 will be traffic shaped.
D.Traffic that is subject to policing will have the DCSP set to 0 if the rate exceeds 1000 bps.
E.IP traffic (DSCPs 1, 2, 3, and 4) that is sent on fastethernet 0/0 are considered to have a violate status and are dropped.
F.IP traffic (DSCP 0) that is sent on fastethernet 0/0 will be subject to fair queuing.

Answer: ABF
QUESTION 3
Which two commands are typically applied to the voice traffic class within a policy-map? (Choose two.)
A. shape peak {bps}
B. priority {kbps}
C. bandwidth {kbps}
D. compress header ip rtp
E. random-detect ecn
F. random-detect dscp-based
Answer: BD
QUESTION 4
LAB Please click console


2950-SWITCH>en 2950-SWITCH#config terminal 2950-SWITCH(config)#int fa0/1 2950-SWITCH(config-if)#mls qos trust dscp 2950-SWITCH(config-if)#exit 2950-SWITCH(config)#int fa0/11 2950-SWITCH(config-if)#mls qos trust cos 2950-SWITCH(config-if)#exit 2950-SWITCH(config)#int fa0/10 2950-SWITCH(config-if)#mls qos trust cos 2950-SWITCH(config-if)#mls qos trust device cisco-phone 2950-SWITCH(config-if)#exit 2950-SWITCH(config)#exit 2950-SWITCH#copy run start

QUESTION 5
In which two locations is the qos pre-classify command applied to support QoS preclassification over an IPSec/GRE tunnel? (Choose two.)
A. the tunnel interface

B. the physical interface
C. the crypto map
D. the policy-map
E. the class-map

Answer: AC
QUESTION 6
What is the purpose of using multiactions traffic policing?
A. so that exceed traffic can be shaped and violate traffic can be policed
B. so that conform, exceed, and violate traffic can be marked with different CLPs
C. so that conform traffic from different flows can be marked with different DSCPs
D. so that class-based policing can mark at Layer 2 and Layer 3 at the same time
E. so that traffic can be policed using two separate rates

Answer: D
QUESTION 7
What is the purpose of the qos pre-classify command?
A. to enable the IOS to copy the ToS field from the original IP header to the outer tunnel IP header
B. to enable the IOS to copy the ToS field from the outer tunnel IP header back into the original IP header
C. to enable the IOS to classify the packet based on the original IP header instead of the tunnel IP header
D. to enable the IOS to classify the packet based on the outer tunnel IP header instead of the original IP header
E. to enable class-based marking on tunnel interface
F. to enable class-based marking on IPSec crypto maps
Answer: C
QUESTION 8
Which QoS mechanism calculates the mean queue depth to determine its operation?
A. WRED
B. LLQ/CBWFQ
C. WFQ
D. class-based shaping
E. class-based policing


Answer: A
QUESTION 9
The following commands have been configured under the fa0/1 interface on the 2950 switch:
wrr-queue bandwidth 20 1 80 0 mls qos trust cos mls qos trust device cisco-phone
Voice traffic from the IP phone that is directly connected to the fa0/1 interface is experiencing excessive delays.
What could be the cause of this problem?
A. The wrr-queue bandwidth weightings are not correct.
B. The default wrr-queue cos-map is being used.
C. The default cos-to-dscp map is being used.
D. The default dscp-to-cos map is being used.
E. The trust boundary configuration is not correct.

Answer: B
QUESTION 10
Switch port fa0/2 has been configured to connect an IP phone with an attached PC. Given the set of commands shown below, where does the trust boundary lie?
interface fa0/2 mls qos trust cos mls qos trust device cisco-phone switchport voice vlan 112
A. between the IP phone and the switch
B. between the IP phone and the PC
C. between the access layer switch and the distribution layer switch
D. between the PC port and the LAN port on the IP phone
Answer: A
QUESTION 11


Answer: QUESTION 12




Answer:

QUESTION 13
What does the following command accomplish?
router(config-pmap-c)# shape fecn-adapt
A.enables the router to lower the shaping rate when BECN bits are received B.enables the router to lower the shaping rate when FECN bits are received

C.enables the router to respond to FECN bits by creating test frames in the opposite direction with the BECN
bit set D.enables the router to respond to BECN bits by creating test frames in the opposite direction with the FECN
bit set E.enables the router to increase the shaping rate when BECN bits are received F.enables the router to increase the shaping rate when FECN bits are received

Answer: C
QUESTION 14
In a managed CE scenario, the customer's network is supporting VoIP and bulk file transfers. According to the best practices, which QoS mechanisms should be applied on the WAN edge CE-PE 56-kbps Frame Relay link on the CE outbound direction?
A. WRR, FRTS, FRF.12, and CB-RTP header compression
B. WRR, CB-WRED, CB-Marking, FRF.12, and CB-RTP header compression
C. CBWFQ, CB-WRED, CB-Marking, CB-Policing, and FRTS
D. CBWFQ, FRTS, FRF.12, and CB-RTP header compression
E. LLQ, CB-WRED, CB-Marking, FRTS, FRF.12, and CB-RTP header compression
F. LLQ, CB-WRED, CB-Policing, and CB-TCP and CB-RTP header compressions
Answer: E
QUESTION 15
In an unmanaged CE router implementation, how does the service provider enforce the SLA?
A. by using class-based policing on the CE to PE link to limit the customer's input rate
B. by marking on the CE to PE link and using CBWFQ and CB-WRED on the PE to P link
C. by marking on the CE to PE link and using class-based policing on the PE to P link
D. by using class-based random discard on the CE to PE link to limit the customer's input rate
Answer: A
QUESTION 16 Answer:



QUESTION 17
A major media company recently deployed a new converged network. The original network design used separate networks for graphics and video, interactive data, and voice. The company has been experiencing problems with voice traffic in the new converged network. Most of the time voice quality is perfectly acceptable. Periodically voice quality exhibits unacceptable choppy voice signals, and occasionally calls are dropped. At this time the company is not willing to simply add bandwidth to the network.

Which QoS solution would most likely help to resolve the problem?
A.Use TCP header compression and LFI to reduce delays.
B.Prioritize voice traffic as the highest priority to ensure that voice traffic is always serviced by the priority queue.
C.Use advanced technologies to compress all video and graphics traffic on the network.
D.Use class-based weighted fair queuing to prioritize voice traffic with a higher weight than all other traffic.

Answer: B
QUESTION 18
According to the best practices, in a service provider network, which statement is true as related to the QoS policy that should be implemented on the inbound provider (P) to provider (P) router link?
A.Traffic policing should be implemented to rate-limit the ingress traffic into the P router.
B.Because traffic should have already been policed and marked on the upstream ingress PE router, no input QoS policy is needed on the P to P link.
C.Class-based marking should be implemented because it will be needed for the class-based queuing that will be used on the P router output.
D.In the DiffServ model, all ingress and egress QoS processing are done at the network edge (for example, PE router), so no input or output QoS policy will be needed on the P to P link.
Answer: B
QUESTION 19
Based on the configuration, which two statements are true? (Choose two.)

A.The interactive traffic class will have a minimum bandwidth guarantee of 256 kbps.
B.The interactive traffic class will have a maximum bandwidth guarantee of 256 kbps.
C.If the interactive traffic class exceeds an average rate of 256 kbps, the traffic rate will be throttled down to 128 kbps.

D.This configuration allows class-based traffic shaping to lower the traffic rate in response to the BECN bit. E.The interactive traffic class will have a min-rate (min-cir) of 128 kbps.

Answer: DE
QUESTION 20
Refer to the exhibit. According to the show output, which statement is true?

A.NBAR protocol discovery has been enabled on the router through the use of the match protocol commands within the class-map. B.The unknown protocol traffic statistics refer to all the traffic matched by the class-default traffic class. C.HTTP is the most active protocol on the Fa0/0 interface based on byte count. D.The 5-minute average bits-per-second rate for all traffic entering the Fa0/0 interface is 398 kbps. E.There is a total of 39,990 NetBIOS packets exiting the Fa0/0 interface.

Answer: C
QUESTION 21
What are two benefits of WFQ? (Choose two.)
A.WFQ is very easy to configure, and no manual traffic classification is necessary. B.WFQ can provide fixed-bandwidth and fixed-delay guarantees. C.WFQ can provide fixed-bandwidth guarantees. D.WFQ can provide fixed-delay guarantees.

E.WFQ prevents the large-volume flows with large packet size from starving out the low-volume flows with
small packet size. F.Based on DSCP, WFQ allows weighted, random dropping of packets when the WFQ system is full.

Answer: AE
QUESTION 22
Which command is needed to correct the following configurations in order to enable ppp multilink LFI on the s0/0 interface?
interface Serial0/0 ip address 10.1.1.1 255.255.255.0 encapsulation ppp no fair-queue ppp multilink multilink-group 2001100114 ! interface Multilink2001100114 bandwidth 384 ip address 10.1.1.1 255.255.255.0 service-policy output AutoQoS-Policy-UnTrust ppp multilink ppp multilink fragment-delay 10 ppp multilink interleave
A. the no ip address command on the s0/0 interface
B. the multilink-group 2001100114 command on the Multilink2001100114 interface
C. the ppp multilink load-threshold command on the s0/0 interface
D. the ppp multilink load-threshold command on the Multilink2001100114 interface
E. the ppp multilink interleave command on the s0/0 interface

Answer: A
QUESTION 23
Which three characteristics are drawbacks to the use of a best-effort with over-provisioning backbone design? (Choose three.)
A. The design costs more to implement than a DiffServ backbone.
B. Denial of Service attacks on one service can affect all network traffic.
C. The design uses a different over-provisioning ratio for the different traffic classes.
D. It requires complex QoS mechanisms at the network edge.

E. It requires complex QoS mechanisms at the network core.
F. Unplanned network failures can cause unexpected congestion in the network. Answer: ABF
QUESTION 24

Answer:


QUESTION 25
A Cisco Catalyst switch has an IP phone connected to its Fastethernet0/2 port. The IP phone has an attached PC. The Fastethernet0/2 port on the switch has been configured with the commands mls qos trust cos, mls qos trust device cisco-phone, and switchport priority extend trust. What will happen to a data frame with a CoS of 5 that is sent from the PC through the IP phone to port Fastethernet0/2 on the switch?
A.The IP phone will, by default, overwrite the switch CoS value and mark the data packet as CoS 0. B.The IP phone will allow the data packet through without modifying the CoS settings of the data frame. C.The switch will instruct the phone to allow the packet through without modification only if the phone has been
configured to do so. D.While the packet will pass through the IP phone without modification, the switch will, by default, override the CoS priority with the switch default CoS priority.

Answer: B
QUESTION 26
Refer to the exhibit. A typical configuration involving an IP phone with an attached PC is shown. According to QoS recommendations, at which demarcation line (shown as dotted lines) would the trust boundary normally exist?


A. A
B. B
C. C
D. D

Answer: B
QUESTION 27
What will be the peak shape rate based on the configuration that follows?
policy-map setpeak class all-traffic shape peak 32000
A. 16000 bps
B. 32000 bps
C. 48000 bps
D. 64000 bps
E. 80000 bps
F. 96000 bps
Answer: D
QUESTION 28
Which three characteristics best describe a converged network? (Choose three.)
A. the use of overprovisioning to ensure voice quality
B. the separation of the voice and data networks into two networks to ensure voice quality
C. the potential for poor voice quality due to other traffic
D. prioritization and congestion management to ensure voice quality
E. the use of a separate high-speed link for bulk traffic to avoid interference with other traffic

F. the random dropping of lower priority traffic to ensure that high-priority traffic gets through Answer: CDF
QUESTION 29
LAB






QUESTION 30
Refer to the exhibit. QPPB is being used by the service provider (AS30). The table-map and route-map called "important" are implemented on router POP A. The command bgp-policy destination ip-prec-map is applied to the interface between POP A in AS30 and NAP (AS40). Which QoS action would have to be applied on POP B in AS30 to ensure that the traffic from the NAP (AS40) to the customer (AS20) will be marked with an IP precedence of flash?


A.Traffic from AS20 must have the community attribute set to 10:50 in a route-map, and send-community must be specified.
B.No actions are needed. Traffic must be marked in AS20 by the customer as 10:50 before it arrives at the service provider.
C.Traffic from AS20 must have the extended community attribute set to 10:50 in a route-map, and send-community extended (or send-community both) must be specified.
D.Traffic from AS20 must be automatically marked via an inbound QoS map on POP B, resulting in the community attribute set to 10:50.

Answer: A
QUESTION 31
LAB Please click console (Use must create a policy-map name llq-policy)


R1#en R1#configure terminal R1(config)#policy-map llq-policy R1(config-pmap)#class voice R1(config-pmap-c)#prority 168 R1(config-pmap-c)#exit R1(config-pmap)#class interactive R1(config-pmap-c)#bandwidth 30 R1(config-pmap-c)#exit R1(config-pmap)#class bulk R1(config-pmap-c)#bandwidth 16 R1(config-pmap-c)#shape average 24000 R1(config-pmap-c)#exit R1(config-pmap)#class class-default R1(config-pmap-c)#fair-queue R1(config-pmap-c)#exit R1(config-pmap)#exit R1(config)#int s0/0 R1(config-if)#service-policy output llq-policy R1(config-if)#end R1#copy run start (Fixed by Muawia)

QUESTION 32
Where is the error in the following policy-map configuration?
policy-map test class voice priority 168
class mission-critical bandwidth 192 random-detect
class class-default fair-queue bandwidth 128
A.The bandwidth command is not a valid command for the class-default traffic class in this case. B.The voice traffic class is missing the random-detect command. C.The mission-critical traffic class bandwidth guarantee should be lower than the voice traffic class priority
bandwidth guarantee. D.The mission-critical traffic class is missing the queue-limit command. E.Fair-queue should be enabled for the mission-critical traffic class.

Answer: A
QUESTION 33
Refer to the exhibit. A service provider is considering several alternative provisioning schemes for a new network. One proposed scheme involves aggregating 10-Mbps links from customers into a network with multiple 100-Mbps links to ensure that the network links have at least two times the capacity of the aggregate of the customer links.
What is the most appropriate description for the proposed scheme?


A. oversubscription
B. overprovisioning
C. Bandwidth-on-Demand
D. CIRof0
E. overaggregate
Answer: B
QUESTION 34

Answer:


QUESTION 35
Where is the fragment size configured when using FRF.12 link fragmentation and interleaving?
A. within the physical serial interface
B. within the Frame Relay map-class
C. within the MQC policy-map
D. within the MQC class-map
E. within the MQC service-policy
F. within the logical multilink interface

Answer: B
QUESTION 36
Which algorithm (discard method) does WRED use to determine which packets will be dropped when the average queue length becomes larger than the user-specified maximum threshold?
A. tail discard
B. random discard
C. weighted early discard
D. packet size based discard


Answer: A
QUESTION 37
Which technology is required when configuring FRF.12 on a Cisco device?
A. FRF11.c
B. FRF.8
C. VoFR
D. MLP with interleaving
E. FRTS
F. WRED

Answer: E
QUESTION 38
What are three reasons link efficiency mechanisms are deployed on WAN links? (Choose three.)
A. decrease delay
B. decrease jitter
C. increase link speed
D. increase throughput
E. decrease propagation delay

Answer: ABD
QUESTION 39
Based on the following show output, which statement is true?
WG1S1#sh mls qos interface fa0/1 FastEthernet0/1 trust state: not trusted trust mode: trust cos COS override: dis default COS: 0 pass-through: none trust device: cisco-phone
A. DSCP markings from the Cisco IP Phone are trusted.
B. A Cisco IP Phone is not connected to the fa0/1 switch port.

C. All incoming CoS markings are trusted.
D. All incoming DSCP markings are trusted.

Answer: B
QUESTION 40
LAB








QUESTION 41
In a typical converged campus network, which two of the following are considered QoS best practices? (Choose two.)
A.Traffic classification and marking is performed as close to the traffic source as possible. B.Traffic classification and marking is performed at the high speed core layer. C.Ensure voice traffic is serviced by a weighted fair queue. D.Only a reasonable number of applications should be classified into the mission-critical traffic class. E.NBAR is used at the high speed core layer to discover and classify network applications. F.Catalyst switches should use weighted round robin (WRR) queuing giving the voice traffic the highest
priority.
Answer: AD
QUESTION 42
Which element is mandatory for QoS policy propagation through BGP operations?
A. MPLS

B. NBAR
C. CEF
D. QoS pre-classify
E. policy-based routing
F. MQC

Answer: C
QUESTION 43
Which mechanism is used for the prioritizing, protection, and isolation of traffic based on marking?
A. classification and marking
B. congestion management
C. congestion avoidance
D. metering
E. policing
F. shaping
Answer: B
QUESTION 44

Answer: QUESTION 45


At the network layer, IP packets are typically classified based on which three items? (Choose three.)
A. packet length
B. VLAN Identifier
C. flow control bits
D. source and destination IP addresses
E. content of the ToS byte

Answer: ADE
QUESTION 46
Which two values influence how the fragment size should be set when configuring FRF.12? (Choose two.)
A. the physical interface port speed
B. the dual FIFO Frame Relay interface queue size
C. the CIR of the PVC
D. the Voice over IP (VoIP) packet size
E. the software queuing method
Answer: CD
QUESTION 47
Which QoS mechanism adds IP Precedence information for prefixes into the FIB table?

A. QoS pre-classify
B. AutoQoS
C. QPPB
D. Class-Based Marking
E. LLQ
F. Class-Based WRED

Answer: C
QUESTION 48
When configuring a Cisco Catalyst switch to accommodate an IP phone with an attached PC, it is desired that the trust boundary be set between the IP phone and the switch. Which two commands on the switch are recommended to set the trust boundary as described? (Choose two.)
A. mls qos trust extend [cos value]
B. no mls qos trust dscp
C. mls qos trust cos
D. mls qos trust device cisco-phone
E. switchport priority extend trust
F. mls qos cos 5

Answer: CD
QUESTION 49
According to the best practices, which statement is true as related to the QoS policy that should be implemented on the outbound provider (P) to provider (P) router link in a service provider network that is supporting both VoIP and data?
A.CBWFQ and CB-WRED should be implemented on the P router egress to provide a maximum bandwidth guarantee for the VoIP traffic. B.LLQ and CB-WRED should be implemented on the P router egress to support both VoIP and data traffic. C.CBWFQ and CB-RTP header compression should be implemented on the P router egress to ensure minimum latency for VoIP traffic. D.In the DiffServ model, ingress and egress QoS mechanisms are only required on the provider edge (PE) routers, so no QoS policy is needed on the P to P link.
Answer: B QUESTION 50

Refer to the exhibit. Why would applying the limit-interactive policy-map to the fa0/0 interface as shown below cause an error?
interface fa0/0 service-policy input limit-interactive

A. The interactive class-map has not been configured.
B. The interactive traffic class is missing the bandwidth {kbps} command.
C. Class-based policing can only be applied in the output direction.
D. TCP header compression can only be applied in the output direction.
E. There is already an output service-policy defined on the fa0/0 interface.

Answer: D
QUESTION 51
What describes the use of best-effort service with overprovisioning?
A.ensuring quality of service by providing more than the aggregate bandwidth required
B.ensuring constant availability by provisioning multiple paths through the network
C.ensuring quality of service by deploying sophisticated prioritization and congestion management mechanisms
D.ensuring quality of service by being able to load balance across links in times of congestion
E.ensuring availability and quality of service by always provisioning key services across at least two service
provider networks
Answer: A
QUESTION 52
The qos pre-classify command can be configured under which two configuration modes? (Choose two.)

A. router(config)#
B. router(config-if)#
C. router(config-pmap-c)#
D. router(config-crypto-map)#
E. router(config-cmap)#
F. router(config-router)#

Answer: BD
QUESTION 53
Based on the following policy-map configuration, the bulk traffic class packets are not being ECN marked, yet there are many random drops in the bulk traffic class. What is the most likely cause of the problem?
router(config)# policy-map MyPolicy router(config-pmap)# class bulk router(config-pmap)# bandwidth 128 router(config-pmap-c)# random-detect dscp-based router(config-pmap-c)# random-detect dscp af31 32 40 10 router(config-pmap-c)# random-detect dscp af32 28 40 10 router(config-pmap-c)# random-detect dscp af33 24 40 10 router(config-pmap-c)# random-detect ecn
A. The CB-WRED min threshold is set too low.
B. The CB-WRED max threshold is set too high.
C. The CB-WRED mark probability denominator is set too low.
D. The endpoints generating the bulk traffic packets are not ECN capable.
E. Some of the routers within the traffic path are not ECN capable.
Answer: D
QUESTION 54 Answer:



QUESTION 55
Mission-critical traffic is not getting a minimum bandwidth of 192 kbps in this policy-map configuration. What should be done to correct the problem?
policy-map test class mission-critical bandwidth 192 shape average 128000 queue-limit 64
A.Change the bandwidth statement to the bandwidth 192000 command. B.Replace the bandwidth statement with the priority 192 command. C.Set the shape rate to a CIR that is higher than 192 kbps. D.Use the shape peak command instead of the shape average command. E.Increase the maximum queue size for the mission-critical traffic class using the queue-limit 128 command. F.Decrease the maximum queue size for the mission-critical traffic class using the queue-limit 40 command.


Answer: C
QUESTION 56
Which of the following configurations requires the use of hierarchical policy maps?
A. the use of class-based WRED within a CBWFQ class queue
B. the use of a strict priority-class queue within CBWFQ
C. the use of CBWFQ inside class-based shaping
D. the use of nested class-maps with class-based marking
E. the use of both the bandwidth and shape statements within a CBWFQ class queue

Answer: C
QUESTION 57
Which two of the following statements about CBWFQ are correct? (Choose two.)
A. The CBWFQ scheduler provides a guaranteed amount of minimum bandwidth to each class.
B. CBWFQ services each class queue using a strict priority scheduler.
C. The class-default queue only supports WFQ.
D. Each CBWFQ traffic class is policed using a congestion aware policer.
E. Inside a class queue, processing is always FIFO, except for the class-default queue.

Answer: AE
QUESTION 58
Traffic classification using NBAR is configured using which IOS command?
A. router(config-cmap)# match protocol {protocol-name}
B. router(config-if)# ip nbar protocol-discovery
C. router(config)# ip nbar port-map {protocol} [tcp|udp] {port-number} {port-number} ....
D. router(config)# ip nbar pdlm {pdlm-file}

Answer: A
QUESTION 59
A Frame Relay interface has been configured for adaptive shaping with a minimum rate of 15 kbps. The current maximum transmit rate is 56 kbps. If three FECNs are received over the next 4 seconds, what will be the

maximum transmit rate after the last FECN has been received?
A. 7 kbps
B. 10 kbps
C. 15 kbps
D. 28 kbps
E. 37 kbps
F. 56 kbps

Answer: F
QUESTION 60
Which three statements regarding WRED are true? (Choose three.)
A. WRED can be IP precedence-based or DSCP-based.
B. WRED is an advanced queuing mechanism.
C. ECN is an extension of WRED.
D. WRED is used to rate-limit the incoming traffic by metering the incoming traffic rate.
E. WRED can be applied to a traffic class using CB-WRED.
F. WRED uses a shaping queue to delay excess traffic.

Answer: ACE
QUESTION 61
Which two different traffic types have the most similar sensitivity to latency, jitter, and packet loss? (Choose two.)
A. SQL transactions
B. voice
C. voice signaling
D. streaming video
E. video conferencing
F. peer-to-peer file sharing
Answer: BE
QUESTION 62
What are two errors in this policy-map configuration? (Choose two.)

policy-map test class voice priority 64 class bulk bandwidth percent 20 fair-queue class interactive bandwidth percent remaining 10 fair-queue class class-default fair-queue
A. The bandwidth command is missing for the class-default traffic class.
B. WFQ cannot be configured for the class-default traffic class.
C. WFQ cannot be configured for the bulk and interactive traffic classes.
D. The bandwidth units for the bulk and interactive traffic classes are inconsistent.
E. The priority command cannot be used with the bandwidth command within the same policy-map.
F. The voice traffic class should have the no fair-queue command.

Answer: CD
QUESTION 63
For which service is assured forwarding PHB used?
A. best effort
B. expedited forwarding
C. guaranteed bandwidth
D. class selector
Answer: C
QUESTION 64
QoS policy propagation through BGP (QPPB) supports which two QoS markers? (Choose two.)
A. DSCP
B. IP precedence
C. QoS group
D. COS
E. MPLS EXP


Answer: BC
QUESTION 65
What are three methods of reducing delay for critical applications in a converged network? (Choose three.)
A. Apply payload compression.
B. Increase link capacities.
C. Apply header compression.
D. Increase LFI fragment size.
E. Reduce inter-packet gaps.
F. Increase all queue depths.

Answer: ABC
QUESTION 66
Based on the configuration, which two of the following statements are true? (Choose two.)
policy-map police 1
class bulk-ftp police cir percent 20 pir percent 40 conform-action set-dscp-transmit af11 exceed-action set-dscp-transmit 0 violate-action drop
A. This configuration will use a single token bucket.
B. This configuration will drop all exceeding traffic.
C. This is a dual-rate, class-based policing example.
D. This is a percentage-based policing example.
E. This is a multi-action, class-based policing example.
Answer: CD
QUESTION 67
Refer to the partial router configuration. Which two of the following statements are true? (Choose two.)


A. The configuration is invalid since it refers to a class map within a different class.
B. The class-map class1 command will set the qos-group value to 4 for all IP packets.
C. Regardless of destination IP address, all traffic sent to Mac address 1.2.3 will be subject to policing
D. Only those packets which satisfy all of the matches in class1 and class2 will be subject to policing.
E. All traffic from a server with the IP address of 147.23.54.21 will be subject to policing.
F. Any IP packet will be subject to policing.

Answer: CE
QUESTION 68
The show policy-map interface command output is showing too many random drops for the mission-critical traffic class. What can be changed to reduce the random drops?
A. Increase the WRED max-threshold value for the mission-critical traffic class.
B. Increase the WRED min-threshold value for the mission-critical traffic class.
C. Decrease the WRED drop probability denominator for the mission-critical traffic class.
D. Decrease the queue-limit for the mission-critical traffic class.
E. Enable fair-queue within the mission-critical traffic class.
Answer: B
QUESTION 69
Which three factors will affect processing delay? (Choose three.)
A. CPU speed

B. router architecture
C. queuing mechanism
D. type of media
E. IP switching method
F. distance of media

Answer: ABE
QUESTION 70
This policy-map is applied to a 128-kbps serial interface in the output direction. Which set of additional commands within this policy-map will improve the link efficiency on the serial interface?
policy-map test class voice
priority 25 class telnet
bandwidth remaining percent 20 class ftp
bandwidth remaining percent 30
A. class voice no priority 25 bandwidth percent remaining 25
B. class voice compression header ip tcp
C. class telnet compression header ip tcp
D. class telnet fair-queue
E. class ftp fair-queue
F. class ftp compression header ip

Answer: C
QUESTION 71
To determine the bandwidth requirement for each VoIP call, not including Layer 2 overhead, how much bandwidth per call should be added to account for the voice signaling traffic?

A. 20 bps
B. 40 bps
C. 150 bps
D. 240 bps
E. 480 bps
F. 640 bps

Answer: C
QUESTION 72
Based on the following Cisco Catalyst 2950 Series switch configurations, which additional command will enable these actions?
Traffic marked with a CoS of 6 or 7 will be serviced by the priority queue. Traffic marked with a CoS of 0, 1, or 2 will have a 20-percent weight when serviced by the wrr queue. Traffic marked with a CoS of 4 will have a 30-percent weight when serviced by the wrr queue. Traffic marked with a CoS of 3 or 5 will have a 50-percent weight when serviced by the wrr queue.
Catalyst 2950 partial configuration:
no wrr-queue cos-map wrr-queue cos-map 1 0 1 2 wrr-queue cos-map 2 4 wrr-queue cos-map 3 3 5 wrr-queue cos-map 4 6 7
A. wrr-queue bandwidth 1 10 15 25
B. wrr-queue bandwidth 1 20 30 50
C. wrr-queue bandwidth 15 25 10 1
D. wrr-queue bandwidth 10 15 25 0
E. wrr-queue bandwidth 15 25 10 0
Answer: D
QUESTION 73
Which four of the following bit values are used for bits 5-7 of the DSCP field to select AF PHB? (Choose four.)
A. 000
B. 001
C. 010

D. 011
E. 100
F. 101

Answer: BCDE
QUESTION 74
Which command is typically applied to the voice traffic class within a policy-map?
A. bandwidth {kbps}
B. compress header ip rtp
C. fair-queue
D. shape average {bps}
E. shape peak {bps}
F. random-detect dscp-based

Answer: B
QUESTION 75
When configuring WFQ, what is the default number of dynamic queues based on?
A. hold-queue limit
B. congestive discard threshold (CDT)
C. interface bandwidth
D. hash of the packet headers
E. inter-packet arrival rate
F. drop probability denominator

Answer: C
QUESTION 76
Based on the Cisco Catalyst 2950 Series switch configuration shown, with no weights being assigned to the egress queues, which type of queuing is being implemented?
wrr-queue cos-map 1 0 wrr-queue cos-map 2 1 2 3 wrr-queue cos-map 3 4 5 wrr-queue cos-map 4 6 7

A. weighted round robin
B. priority
C. custom
D. weighted fair
E. weighted round robin with an expedite queue
F. modified deficit round robin

Answer: B
QUESTION 77
When LLQ is being configured, which IOS command is used to limit the traffic rate on the priority queue even when the other class queues are not congested?
A. priority
B. bandwidth
C. queue-limit
D. police
E. hold-queue
Answer: D