Updated Dec 21, 2021 Certification Exam 4A0-C02 Dumps - Practice Test Questions
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NEW QUESTION 68
Where are VPN-IPv4 addresses used in a VPRN?
- A. In the routing updates exchanged from PE to PE
- B. In the routing updates exchanged from CE to PE
- C. In customer packets as they traverse the provider core
- D. In the routing updates exchanged from P to PE
- E. In all route tables of the VPRN control plane
Answer: A
NEW QUESTION 69
For the inter-AS model B VPRN, which of the following is the correct BGP configuration on ASBR1?
- A. Option A
- B. Option B
- C. Option D
- D. Option C
Answer: D
NEW QUESTION 70
Click the exhibit.
A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a BGP/MPLS service provider. Which route is present in PE1's global routing table?
- A. 192.168.10.1
- B. 10.10.10.6
- C. 10.10.10.1
- D. 192.168.20.1
Answer: B
NEW QUESTION 71
Which of the following about inter-AS model C VPRNs is FALSE?
- A. Within each AS, MP-iBGP sessions are established to exchange VPN-IPv4 prefixes between the PE routers.
- B. PE routers in different ASs exchange VPRN routing information directly over MP-eBGP.
- C. ASBRs exchange the system addresses of PE routers as VPN-IPv4 routes over MP-eBGP.
- D. Within each AS, the ASBR advertises the system addresses of remote PE routers as labeled IPv4 routes.
Answer: C
NEW QUESTION 72
What class of attribute is Originator_ID?
- A. Optional transitive.
- B. Optional non-transitive.
- C. Well-known mandatory.
- D. Well-known discretionary.
Answer: B
NEW QUESTION 73
Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes" on router R2?
- A. Option A
- B. Option D
- C. Option C
- D. Option B
Answer: A
NEW QUESTION 74
Which of the following best describes the output?
- A. The AS-Path is not present because VPN-IPv4 routes do not propagate the IPv4 AS-Path BGP attribute.
- B. The AS-Path is not present because a policy is configured on CE1 to set it to null.
- C. The AS-Path is not present because a policy is configured on PE2 to set it to null.
- D. The AS-Path is not present because a policy is configured on PE1 to set it to null.
Answer: D
NEW QUESTION 75
On a PE router, the VRF table for VPRN 10 contains: one local route, two BGP routes learned from a local CE. and three tunneled routes learned from a remote site. If we execute the command "configure service vprn 10 maximum-routes 2 log-only" on this PE router, how many routes are expected to be in the VRF?
- A. Six routes: the local route, the two BGP routes learned from the local CE, and three tunneled routes.
- B. Three routes: the local route and two tunneled routes.
- C. Two routes: the local route and one BGP route learned from the local CE.
- D. Five routes: the local route, the two BGP routes learned from the local CE, and two tunneled routes.
- E. Two routes: the local route and one tunneled route.
Answer: A
NEW QUESTION 76
Routers RR1 and RR2 are configured as route reflectors. For the inter-AS model C VPRN, which of the following about the VPN-IPv4 route advertisement is FALSE?
- A. RR2 advertises the VPN-IPv4 route update of 192.1.1.0/27 to PE2
- B. RR2 advertises the VPN-IPv4 route update of 192.2.1.0/27 to RR1
- C. RR1 advertises the VPN-IPv4 route update of 192.1.1.0/27 to RR2
- D. PE1 advertises the VPN-IPv4 route update of 192.1.1.0/27 to RR1 and ASBRL
Answer: D
NEW QUESTION 77
For the Inter-AS model B VPRN, which of the following about the inter-as-label output on ASBR1 is TRUE?
- A. ASBR1 includes label 131068 in the route update sent to PEL
- B. ASBR1 includes label 131068 in the route update sent to ASBR2.
- C. ASBR1 includes label 131069 in the route update sent to ASBR2.
- D. ASBR1 includes labels 131068 and 131069 in the route update sent to ASBR2.
Answer: B
NEW QUESTION 78
For the Carrier Supporting Carrier (CSC) VPRN, which routes are advertised between CSC-CE1 andCSC-PE1?
- A. VPN-IPv4 routes for all PE system addresses in AS 5000
- B. BGP labeled IPv4 routes for all PE system addresses in AS 1000
- C. VPN-IPv4 routes for all PE system addresses in AS 1000
- D. BGP labeled IPv4 routes for all PE system addresses in AS 5000
Answer: D
NEW QUESTION 79
What is the name of the feature supported on the Alcatel-Lucent 7750 SR that prevents MAC explosion in large VPLS deployments?
- A. M-VPLS
- B. PBB
- C. H-VPLS
- D. MC-EP
Answer: B
NEW QUESTION 80
With hierarchical scheduling, up to ___________ tiers are supported on the Alcatel-Lucent 7750 SR.
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: C
NEW QUESTION 81
Without_______, a customer's high priority traffic can be dropped before its low priority traffic.
- A. least cost routing
- B. prioritization of traffic flows
- C. packet filtering
- D. OAM functionality
- E. separation between the data plane and the control plane
Answer: B
NEW QUESTION 82
Which of the following about BGP Site of Origin (SoO) is FALSE?
- A. The SoO attribute can be used as matching criteria when redistributing routes from the CE to the PE
- B. The SoO attribute can be used to prevent loops from a single site with multiple CE-PE connections.
- C. The SoO attribute can be used to uniquely identify the site from which a PE learns routes.
- D. Before a PE redistributes a VPN-IPv4 route, it can assign an SoO attribute to the route.
Answer: A
NEW QUESTION 83
Which of the following statements BEST describes an MBS parameter?
- A. It specifies the maximum rate at which a queue can be serviced.
- B. It specifies the maximum depth of a queue beyond which packets will be dropped.
- C. It specifies the peak bandwidth that can be attained by the incoming traffic.
- D. It specifies the threshold beyond which only in-profile packets will be queued.
- E. It specifies the portion of a queue that is taken from the reserved buffer pool.
Answer: B
NEW QUESTION 84
Click the exhibit.
Considering that both routers C and D are advertising the eBGP learned prefix 10.5.0.0/16 into ISP X, which of the following best describes the route advertisement within ISP X?
- A. Router C sends the update to routers D, E and F.
- B. Router C sends the update to routers A, B, D, E and F.
- C. Router C sends the update to routers A, B, E and F.
- D. Router C sends the update to routers E and F only.
Answer: B
NEW QUESTION 85
What kind of BGP attribute is the Local Preference?
- A. Optional transitive attribute.
- B. Well-known discretionary attribute.
- C. Well-known mandatory attribute.
- D. Optional non-transitive attribute.
Answer: B
NEW QUESTION 86
If a packet is marked on a SAP-ingress, it will be remarked at the first network egress point (if remarking is enabled in the network egress policy).
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 87
A router has just learned the 10th MAC address while the FDB size is also set to 10. What is the likely outcome?
- A. The frame is forwarded and MAC learning is automatically disabled.
- B. The frame is discarded if the destination is unknown.
- C. The frame is dropped.
- D. More information is required to determine the fate of this new frame.
- E. The frame is always flooded
Answer: A
NEW QUESTION 88
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