2021 Realistic 4A0-C02 Dumps Exam Tips Test Pdf Exam Material
Powerful 4A0-C02 PDF Dumps for 4A0-C02 Questions
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NEW QUESTION 215
Based on the VPRN BGP decision process, which of the following routes is selected first?
- A. The route received from the lowest peer IP address.
- B. The route with the lowest MED
- C. The route with the lowest Origin.
- D. The route with the shortest AS Path.
Answer: D
NEW QUESTION 216
A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). Which route is NOT present in PE1's global routing table?
- A. 10.10.10.6
- B. 10.10.10.3
- C. 192.60.100.0
- D. 192.50.1.1
Answer: B
NEW QUESTION 217
Click the exhibit.
Assume all router-IDs are properly configured, and global IPv6 addresses are used to establish eBGP sessions. Which of the following configurations is required on router A so that router B can exchange traffic with router D?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: C
NEW QUESTION 218
Click the exhibit.
For the inter-AS model C VPRN, how many labels does PE1 push on a data packet received from CE1 and destined to CE2?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 219
For the inter-AS model C VPRN, which of the following is FALSE when an IP packet is sent from 192.1.1.1 to 192.2.1.1?
- A. ASBR1 pops the LDP and BGP labels and swaps the VPN label.
- B. PE2 pops two labels and forwards the unlabeled packet to its destination.
- C. ASBR2 pops the BGP label and pushes an LDP transport label.
- D. PE1 pushes three labels on the IP packet: a VPN label, a BGP label, and an LDP transport label.
Answer: A
NEW QUESTION 220
Click the exhibit.
Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of 200. On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for prefix 192.168.1.0/27?
- A. On either router R1or R2.
- B. On both routers R1and R2.
- C. On all routers R1, R2 and R5.
- D. On router R5 only.
Answer: B
NEW QUESTION 221
Assume a CE router is connected to the SAP of each PE. The arp cache of all CE routers is empty and the FDB for VPLS 300 is empty. The CE router connected to PE-A initiates a ping towards the CE router connected to PE-C. The ping is successful. Which of the following statements are true? (Choose 2)
- A. The FDB on PE-A will contain entries for all CE routers.
- B. The FDB on PE-C will contain entries for the CE router connected to PE-A and the CE router connected to PE-C.
- C. The FDB on PE-B will contain an entry for the CE router connected to PE-A.
- D. The FDB on PE-B will contain an entry for all CE routers.
Answer: B,C
NEW QUESTION 222
Click the exhibit.
Which of the following is a valid BGP configuration for router R2?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: C
NEW QUESTION 223
Which of the following functions must a PE router support when participating in a VPLS service? (Choose 3)
- A. Frame forwarding
- B. Must discard frames with an unknown destination MAC
- C. MAC learning
- D. Frame fragmentation
- E. Frame replication
- F. MSTP
Answer: A,C,E
NEW QUESTION 224
Assuming that as-override has been used, which of the following statements describes the most likely location of prefix 10.1.2.0/24, based on the output from an Alcatel-Lucent 7750 SR shown below?
- A. There is a single Autonomous System between the local AS and the AS that originated the prefix
- B. It is located in Autonomous System 65100
- C. It is located in an Autonomous System directly connected to this router
- D. There are two Autonomous Systems between the local AS and the AS that originated the prefix
- E. There may be two or more Autonomous Systems between the local AS and the AS that originated the prefix
Answer: A
NEW QUESTION 225
Click on the exhibit below.
The VPLS service MTU on R2 is 1514 bytes. What must the service MTU be on all other routers participating in the VPLS?
- A. The service MTU can be any value.
- B. The service MTU must be equal to or smaller than 1514 bytes.
- C. The service MTU must be equal to or greater than 1514 bytes.
- D. The service MTU must be 1514 bytes.
Answer: D
NEW QUESTION 226
What happens to a route that is rejected by an import policy on an Alcatel-Lucent 7750 SR?
- A. The route is moved to the route table, but not to the FIB.
- B. The route is moved to the LOC-RIB, but not marked as a used route.
- C. The route is discarded.
- D. The route is kept in the RIB-In, but marked as an invalid route.
Answer: D
NEW QUESTION 227
Which of the following regarding the connections between eBGP peers is TRUE?
- A. eBGP peers are managed under a single administration.
- B. eBGP peers typically use system addresses for session establishment.
- C. eBGP peers do not propagate updates learned via iBGP.
- D. eBGP peers are usually directly connected to each other.
Answer: D
NEW QUESTION 228
Which of the following statements regarding the Originator_ID attribute is TRUE?
- A. The Originator_IDis set to the ClusterJD of the advertising router reflector.
- B. Both confederation and route reflector topologies use the Originator_ID .
- C. The BGP router that originates an update sets the Originator_ID .
- D. A BGP router ignores an update that contains its own BGP router ID as Originator_ID .
Answer: D
NEW QUESTION 229
Two Alcatel-Lucent 7750 SRs are established BGP peers with the following add-paths configuration:
R1: configure router bgp add-paths ipv4 send 4 receive
R2: configure router bgp add-paths ipv4 send 2
If router R1 advertises three routes for a given prefix X, how many routes is router R2 expected to have for prefix X?
- A. 0
- B. 1
- C. None
- D. 2
Answer: A
NEW QUESTION 230
Which of the following statements are TRUE regarding the building of a QoS-enabled network? (Choose two)
- A. Packet enters a node will be treated as per the local hop's configured policy.
- B. Native IP packets entering a network port will be marked at the first network egress, regardless of the re-marking configuration.
- C. Native IP packets entering a network port will not be marked at the first network egress by default.
- D. It is important that all packets are classified in the same way at all SAP-ingress points.
- E. Native IP packets entering a network port will be marked at the first network egress by default
- F. Once a packet is classified to a forwarding class, it cannot change across the network.
Answer: A,C
NEW QUESTION 231
How many route targets and route distinguishers are required to implement the extranet VPRN?
- A. Five route targets and three route distinguishers
- B. Three route targets and three route distinguishers
- C. Five route targets and two route distinguishers
- D. Three route targets and two route distinguishers
Answer: D
NEW QUESTION 232
Which of the following statements best describes the output from an Alcatel-Lucent 7750 SR shown below?
- A. The As-Path is not present as VPN-IPv4 routes do not propagate the IPv4 As-Path BGP attribute
- B. The As-Path is not present as it was removed with the s-override configuration command
- C. The As-Path is not present as it was removed with the o-as-path configuration command
- D. The As-Path is not present as a policy was configured to set it to the null value
Answer: D
NEW QUESTION 233
Which of the following describes the overhead added to a customer frame on an Ethernet link in a VPLS service on the Alcatel-Lucent 7750 SR?
- A. The overhead consists of 14 bytes for DLC
- B. The overhead consists of 18 bytes. 14 DLC +4 for mpls labels
- C. The overhead consists of 22 bytes. 14 DLC + 8 for mpls labels
- D. The overhead consists of 26 bytes. 14 DLC + 2 Ethertype + 8 for mpls labels + 2 for GRE
Answer: C
NEW QUESTION 234
Which of the following is not a valid BGP design for a network provider supporting VPRNs?
- A. Route reflector configuration between PE devices
- B. Full mesh of MP-BGP between all P devices
- C. Confederation configuration between PE devices
- D. Full mesh of MP-BGP between PE devices
Answer: B
NEW QUESTION 235
Click the exhibit.
Assume all router-IDs are properly configured, and link-local IPv6 addresses are used to establish the eBGP sessions. Which of the following is the MINIMAL configuration required on router A so that router B can exchange traffic with router D?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: D
NEW QUESTION 236
Which of the following about inter-AS model A VPRN is FALSE?
- A. Most routers that support VPRN functionality support model A by default.
- B. It requires the configuration of back-to-back VRFs between ASBR routers in different autonomous systems
- C. It is the most scalable of the Inter-AS models.
- D. It uses conventional eBGP to distribute unlabeled IPv4 routes between ASBR routers in different autonomous systems.
Answer: C
NEW QUESTION 237
Click the exhibit.
A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a BGP/MPLS service provider. If CE1 sends an IP packet to 192.168.200.1, which of the following is FALSE?
- A. CE1 forwards the data packet to PE1 via the VPRN 20 interface.
- B. PE1 pushes two labels on the IP packet: a BGP label and an LDP transport label.
- C. CSC-PE1 pops the BGP label and pushes a VPN label and an MPLS transport label.
- D. CSC-CE1 pops the LDP label and swaps the BGP label.
Answer: B
NEW QUESTION 238
An Alcatel-Lucent 7750 SR is configured with a local preference of 250. If it receives a BGP update with a local preference of 500, what local preference is sent to its eBGP peers?
- A. 0
- B. None
- C. 1
- D. 2
Answer: B
NEW QUESTION 239
An advantage of using BGP as the PE-CE protocol is that route policies are no longer required to control the exchange of routes from BGP to MP-BGP.
- A. False
- B. True
Answer: A
NEW QUESTION 240
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