QUESTION 31
Click the Exhibit button.
pim {
spt-threshold {
infinity mcast;
}
rp {
static {
address ;
}
}
interface ge-0/0/0.0 {
disable;
}
interface ge-0/0/3.0;
interface ge-0/0/4.0;
}
policy-statement mcast {
term 1 {
from {
route-filter 224.0.0.0/4 orlonger;
}
then accept;
}
}
Referring to the last-hop router’s information shown in the exhibit, multicast flows are using a suboptimal path. What is the reason?
A. All flows are traversing the rendezvous point because of the configuration.
B. RPF is failing for the entire multicast range.
C. All flows are switching over to SPT too fast.
D. The SPT policy is using the wrong subnet mask for the multicast range.
Answer: A
QUESTION 32
Click the Exhibit button.
Referring to the exhibit, what is the reason that the multicast flow is failing?
A. There is no RP configured on the router.
B. OSPF does not have a route to the RP.
C. The interface towards the RP does not have PIM enabled.
D. Dense mode is configured instead of sparse mode.
Answer: C
QUESTION 33
Click the Exhibit button.
Referring to the exhibit, you have been asked to troubleshoot a class of service (CoS) problem where an interface is dropping some expedited-forwarding (EF) packets during congestion.
Which two statements describe what is happening? (Choose two.)
A. EF packets are dropped because the exp-default classifier maps EF packets to queue 1.
B. EF packets are dropped because the ipprec-compatibility classifier maps EF packets to queue 1.
C. The default CoS input scheduler is in use.
D. The default CoS output scheduler is in use.
Answer: AD
QUESTION 34
Click the Exhibit button.
You are troubleshooting an interface where there are reports that ge-2/1/0 is not able to use more than 50% of its full bandwidth.
According to the output shown in the exhibit, which statement correctly describes the cause of this problem?
A. The exp-default classifier is in use on the interface.
B. The input queues are using the default scheduler.
C. There is a 500 Mbps shaping rate configured.
D. The interface supports eight queues but is only using four queues.
Answer: C
QUESTION 35
Click the Exhibit button.
You are asked to troubleshoot a class of service (CoS) problem where packets are being dropped during peak hours on an edge router interface.
According to the outputs shown in the exhibit, which statement is true?
A. The traffic in queue 0 has exceeded the configured transmit-rate only.
B. The traffic in queue 0 has exceeded the configured buffer-size only.
C. The traffic in queue 0 has exceeded both the buffer-size and transmit-rate.
D. The traffic in queue 0 is being rewritten incorrectly.
Answer: C
QUESTION 36
Click the Exhibit button.
You are setting up a new CoS policy for your VPN customer. You configured the queues as shown in the exhibit, but you see drops in the EF queue. Interface utilization is around 1 Mbps.
What would you do to resolve the problem?
A. Remove the strict-high parameter from the EF queue and add strict-high on the assured-forwarding
(AF) queue.
B. Lower the buffer size on the assured-forwarding (AF) queue.
C. Raise the transmit rate on the EF queue.
D. Lower the transmit rate on the AF queue.
Answer: C
QUESTION 37
You have applied a customized EXP rewrite rule on router R1 on the egress of the interface connecting to router R2. You want to verify if it is working properly. Which two methods would you use to accomplish this task? (Choose two.)
A. Apply a rewrite rule on the ingress of R2 for packets coming in from R1 and count those packets for
the new EXP values with a firewall filter as they leave R2.
B. Use the traceroute utility.
C. Use an output filter on R1 that matches and counts on various EXP values on packets going to R2.
D. Use an input firewall filter on R2 that matches and counts on various EXP values on packets coming
from R1.
Answer: CD
QUESTION 38
Referring to the exhibit, which configuration is required on the Layer 3 VPN PE router to classify EF packets from the core MPLS network into the expedited-forwarding queue?
A. Set class-of-service interfaces xe-1/3/0 unit 0 classifiers dscp default
B. Set class-of-service interfaces xe-1/3/0 unit 0 classifiers dscp DIFFSERVCLASS
C. Set class-of-service interfaces xe-1/3/0 unit 0 classifiers exp default
D. Set class-of-service routing-instances CUST classifiers exp DIFFSERVCLASS-EXP
Answer: D
QUESTION 39
You have recently implemented a new Layer 2 VPN and it is not establishing. The show I2vpn connections command displays an out-of-range state.
What is causing this problem?
A. The local site ID value is too high for the label block.
B. The VRF target community values do not match between sites.
C. The VRF route distinguisher values do not match between sites.
D. The local site ID is not defined.
Answer: A
QUESTION 40
Referring to the exhibit, which two statements are correct about the LSP? (Choose two.)
A. The primary LSP flapped following a link flap.
B. The LSP will go down after 51 seconds.
C. The head-end is signaled that the LSP is protected following a link flap.
D. The LSP constraint checks are failing following a link flap.
Answer: CD
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