Latest Jan 31, 2022 4A0-C04 Brain Dump: A Study Guide with Tips & Tricks for passing Exam
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NEW QUESTION 97
Click the exhibit.
Router R3 is configured with an import policy to reject updates with an AS Path matching the regular expression ".+ 65540". Which of the following regarding updates originating in AS 65540 is TRUE?
- A. Router R3 accepts updates from both routers R1 and R2.
- B. Router R3 accepts updates received from router R1 and rejects updates transited through router R2.
- C. Router R3 accepts updates transited through router R2 and rejects updates received from router R1.
- D. Router R3 rejects all updates originating in AS 65540.
Answer: B
NEW QUESTION 98
How does a DMP inform the downstream routers that it has merged detour tunnels?
- A. The DMP sends the DMP_Object in each detour's PATH messages.
- B. The DMP summarizes PATH messages, giving each detour its own MSGJD.
- C. The DMP sends a single PATH message containing the merged DETOUR_Objects.
- D. The DMP identifies itself as the previous hop in each detour's PATH message.
Answer: C
NEW QUESTION 99
What is the default preference value for a static route in the Nokia 7750 SR?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 100
Click the exhibit button.
What is the command to configure a static route on the Nokia 7750 SR router R1 to reach the network behind router R2?
- A. configure router static-route 139.120.121.0/24 next-hop 138.120.199.2
- B. configure router static-route 139.120.121.0/24 next-hop 138.120.199.1
- C. configure router static-route 139.120.121.0/24 next-hop 139.120.121.2
- D. configure router static-route 138.120.199.2/24 next-hop 138.120.199.1
Answer: A
NEW QUESTION 101
Which of the following about label modes on the Nokia 7750 SR is FALSE?
- A. RSVP uses downstream on demand label distribution mode.
- B. RSVP distributes a label mapping for a FEC when it has been requested to do so.
- C. LDP advertises label mappings to all peers for which it might be a next-hop for a given FEC.
- D. LDP uses conservative label retention mode.
Answer: D
NEW QUESTION 102
Which of the following regarding label population is TRUE?
- A. Selected labels from the LIB are populated to the FIB.
- B. Selected labels from the FIB are populated to the LFIB.
- C. Selected labels from the LIB are populated to the LFIB.
- D. Selected labels from the RIB are populated to the FIB.
Answer: C
NEW QUESTION 103
The configuration of an Nokia 7750 SR is given below. Router Rl has established BGP sessions with routers R2 and R3. Which of the following is TRUE?
- A. Router R1forms iBGP sessions with routers R2 and R3.
- B. Router R1forms an iBGP session with router R2, and an eBGP session with router R3.
- C. Router R1forms eBGP sessions with routers R2 and R3.
- D. The types of BGP sessions with routers R2 and R3 cannot be determined.
Answer: D
NEW QUESTION 104
Click on the exhibit.
An LDP tunnel is established on R1-R2-R4-R6 because the link between routers R3 and R6 is down. With the LDP-IGP Sync feature enabled, what happens immediately after the link is restored?
- A. A new LDP session is established on R1-R3-R6 as soon as router R1 receives a new label for router R6.
- B. The LDP session remains unchanged until router R3 stops advertising the maximum metric for the link to router R6.
- C. The LDP session remains unchanged until the existing path R1-R2-R4-R6 goes down.
- D. A new LDP session is established on R1-R3-R6 as soon as the FIB is updated.
Answer: B
NEW QUESTION 105
Which ofthe following commands is used to display the databasecontaining the OSPF-TE LSAs?
- A. show router ospf opaque-Isa
- B. show router ospf te opaque
- C. show router ospf database
- D. show router ospf opaque-database
Answer: D
NEW QUESTION 106
Click the exhibit button.
Given the topology and the show commands, and assuming that router R2 advertises all of its loopbacks into OSPF, what is the correct router R1 configuration?
- A. Option A
- B. Option B
- C. Option D
- D. Option C
Answer: A
NEW QUESTION 107
Click on the exhibit.
An LSP traverses the path R1-R2-R3. With one-to-one fast reroute enabled, which router becomes a DMP for the detour tunnels?
- A. Router R2
- B. Router R3
- C. Router R1
- D. Router R4
- E. Router R5
Answer: E
NEW QUESTION 108
Click the exhibit.
AS 65540 routers are iBGP fully-meshed. Prefixes advertised by router R2 have a local preference of 200.
Router R1 advertises the prefix 192.168.1.0/27 to routers R2 and R3. Assuming that router R3 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R4?
- A. Option C
- B. Option B
- C. Option D
- D. Option A
Answer: A
NEW QUESTION 109
An Nokia 7750 SR receives a route via an IS-IS LSP with internal reach ability, and receives the same route via an OSPF type 5 LSA. If al protocol preferences are default, which route will be installed in the route table?
- A. Both routes will be installed, if ECMP is enabled.
- B. Both routes will be installed, regardless of whether ECMP is enabled.
- C. The route learned via IS-IS will be installed.
- D. The route learned via the OSPF type 5 LSA will be installed.
Answer: C
NEW QUESTION 110
Which of the following about SAPs is FALSE?
- A. A SAP can be associated with more than one service.
- B. A SAP is created by specifying a physical port and an encapsulation type.
- C. A SAP is the subscriber's point of entry to the service network.
- D. A SAP can only be created on a port configured as "access".
Answer: A
NEW QUESTION 111
Which of the following are similarities between OSPF and IS-IS? Choose two answers.
- A. Metric is based on hop count.
- B. Support hierarchy through the use of areas.
- C. Slow convergence after link failures.
- D. Support for CIDR.
- E. Link state updates sent using layer 3 multicast.
Answer: B,D
NEW QUESTION 112
Which of the following regarding the location of an MPLS label is FALSE?
- A. The MPLS label value may be carried in a Frame Relay header.
- B. The MPLS label value may be carried in an OSPF header.
- C. The MPLS label value may be carried in a shim header.
- D. The MPLS label value may be carried in an ATM header.
Answer: B
NEW QUESTION 113
Click on the exhibit.
After the Isp-ping command is executed, which of the following best describe the router's action?
- A. MPLS Echo Request packets are sent within the RSVP-TE tunnel that are signaled for 192.10.1.2.
- B. MPLS Echo Request packets are sent unlabeled to the prefix 192.10.1.2.
- C. MPLS Echo Request packets are sent within the LDP tunnel that are signaled for 192.10.1.2.
- D. MPLS Echo Request packets are sent over TCP.
Answer: C
NEW QUESTION 114
Click on the exhibit.
LSP 1's link between routers R3 and R6 has failed, and the RESV state at router R3 has timed out. Which of the following actions will router R3 initiate?
- A. Send a PathTear message towards router R1.
- B. Send a PathTear message towards router R6.
- C. Send a ResvTear message toward router R1.
- D. Send a ResvTear message toward router R6.
Answer: C
NEW QUESTION 115
Which of the following statements describe the major features of OSPF? Choose two answers.
- A. Fast reroute capability
- B. Cut through forwarding
- C. Route redistribution
- D. Control traffic prioritization
- E. Traffic engineering extensions
Answer: C,E
NEW QUESTION 116
What is the default inbound metric for RIP on the Nokia 7750 SR?
- A. A value of 1.
- B. Whatever the advertised metric happens to be.
- C. This must be administratively set as there is no default value.
- D. A value of 15.
Answer: A
NEW QUESTION 117
Which of the following messages is NOT used in T-LDP operation?
- A. Keepalive message
- B. Hello message
- C. ACK message
- D. Label Mapping message
- E. Init message
Answer: C
NEW QUESTION 118
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