nokia 4a0-c04 practice test
Nokia NRS II Composite Exam: OSPF version
Question 1
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 R1
- B. Router R2
- C. Router R3
- D. Router R4
- E. Router R5
Answer:
E
Question 2
Which of the following is NOT a characteristic of MPLS?
- A. It provides the ability to establish connection oriented paths over a connectionless IP network.
- B. It provides a mechanism to engineer network traffic patterns independently of IP routing tables.
- C. It will work over most physical layer protocols.
- D. It can use GRE tunnels to transport data from many different protocols over an IP network.
Answer:
D
Question 3
Which of the following regarding per-platform label space is TRUE?
- A. A separate label is used for each interface on which the FEC is advertised.
- B. A single label is assigned to a FEC for all interfaces on the same router,
- C. It is typically used when the device has ATM or Frame Relay interfaces.
- D. It uses more label resources than a per-interface label space.
Answer:
B
Question 4
Which of the following is TRUE when the explicit null is implemented?
- A. The penultimate router will forward packets to the eLER, based on the IP header.
- B. The eLER will receive packets with a top label value of 0.
- C. The eLER will receive packets with a top label value of 3.
- D. The penultimate router will pop the top label from the packets.
Answer:
B
Question 5
If an Nokia 7750 SR is an iLER operating in pipe mode, which of the following regarding the TC field
(EXP bits) is TRUE?
- A. The TC field is set based on the value of the DSCP field inside the customer packet.
- B. The TC field is set to a specific value via explicit administrative configuration.
- C. The TC field is set to a system generated random number.
- D. The TC field is set by the eLER.
Answer:
B
Question 6
Which MPLS label mode propagates a label mapping only for the FEC for which a router has a label
mapping for the FEC's next-hop?
- A. Independent control mode
- B. Ordered control mode
- C. Liberal label retention mode
- D. Conservative label retention mode
- E. Downstream on demand label distribution mode
Answer:
B
Question 7
Which of the following best describes downstream on demand label distribution?
- A. An LSR answers requests for label mappings immediately, without waiting for a label mapping from the next-hop.
- B. An LSR advertises label mappings to all peers for which it might be a next-hop for a given FEC.
- C. An LSR distributes a label mapping for a FEC when it has been requested to do so.
- D. An LSR propagates a label mapping downstream for a FEC. only if it has a label mapping for the FEC's next-hop.
Answer:
C
Question 8
Which of the following regarding MPLS label value assignment is FALSE?
- A. Label values may be dynamically assigned by LDP.
- B. Label values may be dynamically assigned by RSVP-TE.
- C. Label values may be reserved for special uses.
- D. Label values may be dynamically assigned by IGP.
Answer:
D
Question 9
Which of the following is a characteristic of LDP Hello messages?
- A. They are multicast to the All Hosts address.
- B. They are broadcast to the subnet broadcast address.
- C. They are multicast to the All Routers address.
- D. They are broadcast or multicast, depending on the physical media.
Answer:
C
Question 10
What is the purpose of a T-LDP session?
- A. It allows link LDP to be configured on the edge devices only.
- B. It is used to signal the transport labels in the provider core.
- C. It allows selective control over which devices are configured for LDP.
- D. It is used to signal the service labels in the provider core.
Answer:
D
Question 11
Which of the following about LDP sessions is TRUE?
- A. Frame mode requires multiple sessions between peers.
- B. The lower transport address initiates the session.
- C. Established LDP sessions run over a TCP connection.
- D. An LDP session is established immediately after Init messages are exchanged between peers.
Answer:
C
Question 12
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 unlabeled to the prefix 192.10.1.2.
- B. MPLS Echo Request packets are sent within the LDP tunnel that are signaled for 192.10.1.2.
- C. MPLS Echo Request packets are sent within the RSVP-TE tunnel that are signaled for 192.10.1.2.
- D. MPLS Echo Request packets are sent over TCP.
Answer:
B
Question 13
Click on the exhibit.
When router R1 forwards a PATH message to router R2, which of the following about the PATH
message's IP header is TRUE?
- A. The options field is set to router alert.
- B. The source address is R1's egress interface address.
- C. The destination address is R2's ingress interface address.
- D. The HOP object includes R2's system address.
Answer:
A
Question 14
Click on the exhibit.
This LSP terminates on a system IP address. What is the system address of the destination node?
- A. 10.32.1.2
- B. 10.1.4.78
- C. 10.48.1.1
- D. 10.1.2.2
Answer:
C
Question 15
What are the default settings for RSVP-TE on the Nokia 7750 SR?
- A. Per-interface label space, liberal retention mode
- B. Per-platform label space; liberal retention mode
- C. Per-interface label space, conservative retention mode
- D. Per-platform label space, conservative retention mode
Answer:
D