[Jun 12, 2023] 4A0-116 Exam Dumps - Nokia Practice Test Questions
New Real 4A0-116 Exam Dumps Questions
The Nokia 4A0-116 exam is an important certification for professionals who work in the networking industry, as it provides them with the knowledge and skills needed to design, deploy, and manage segment routing networks. It is also a valuable asset for employers, as it allows them to identify and hire professionals who are capable of handling the challenges associated with segment routing technology.
NEW QUESTION # 16
Which of the following statements about a Segment Routing SID is FALSE?
- A. Adjacency-SID values are taken from the SRGB configured for the routing protocol.
- B. A Prefix-SID can be configured directly as a label value or indirectly as an index.
- C. An Adjacency-SID does not have to be configured.
- D. A Node-SID is usually associated with a router's system interface.
Answer: C
Explanation:
An Adjacency-SID does not have to be configured: this statement is not true, An Adjacency-SID is associated with a neighbor router, it is used to identify an adjacency between two routers. An Adjacency-SID must be configured to identify the adjacency.
NEW QUESTION # 17
Which of the following statements about Segment Routing tunnels is FALSE?
- A. For a Segment Routing tunnel, an intermediate router will always forward the packet based on the best IGP path.
- B. A Segment Routing tunnel can be defined by multiple Node-SIDs.
- C. A Segment Routing tunnel can be defined by a combination of Node-SIDs and Adjacency-SIDs.
- D. A Segment Routing tunnel defined by a Node-SID uses the shortest IGP Path.
Answer: A
Explanation:
an intermediate router in a Segment Routing tunnel may forward packets based on the specific SIDs defined in the Segment Routing tunnel and not always the best IGP path.
NEW QUESTION # 18
A router participating in SR-TE is advertising a value of Ox11 for the admin-group membership of one of its interfaces. Which of the following statements is TRUE?
- A. The interface belongs to four different admin groups.
- B. The interface belongs to three different admin groups.
- C. The interface belongs to two different admin groups.
- D. The interface belongs to admin group RED, configured with a value of 17.
Answer: C
Explanation:
In SR-TE, the admin-group is represented by a 32-bit value, where each bit represents a different admin-group. The value Ox11 in binary is 000100010001, which has two bits set to 1, indicating that the interface belongs to two different admin groups. The exact admin-groups that the interface belongs to depends on how the admin-groups have been configured on the router.
NEW QUESTION # 19
Based on the exhibit, which of the following statements about fast re-route for flex-algo instance 129 is TRUE?
- A. Only standard LFA is enabled on both routers R1 and R2.
- B. Standard LFA and remote-LFA are enabled on router R1; fast re-route is not enabled on router R2.
- C. Standard LFA and remote-LFA are enabled on router R1; standard LFA and TT-LFA are enabled on router R2.
- D. Only standard LFA is enabled on router R1; fast re-route is not enabled on router R2.
Answer: B
NEW QUESTION # 20
Based on the configuration shown for routers R1 and R10, what valid flex-algo definitions exist in the network?
- A. No valid flex-algo definitions, because of the conflicting parameters.
- B. One valid flex-algo definition, using te-metric as the link metric and including blue links.
- C. Two valid flex-algo definitions, one uses te-metric as the link metric and includes blue links and the other uses delay as the link met includes green links.
- D. One valid flex-algo definition, using delay as the link metric and including green links.
Answer: C
NEW QUESTION # 21
Which of the following statements about primary and secondary SR-TE LSP paths is FALSE?
- A. The primary path is always preferred over a secondary pa
- B. Only one LSP path forwards the traffic at any time,
- C. Preference values can be configured for non-standby secondary paths.
- D. Up to three paths can be configured for a given SR-TE LS
Answer: D
Explanation:
Typically, in SR-TE, only two paths can be configured for a given SR-TE LSP: primary path and secondary path. The primary path is used for normal traffic forwarding, and the secondary path is used as a backup in case the primary path fails. Only one LSP path forwards the traffic at any time.
NEW QUESTION # 22
OSPF is being used for segment routing with traffic-engineering (SR-TE). The traffic-engineering option has been set to "sr-te false". Which of the following statements is TRUE?
- A. The TE information will be advertised for all the OSPF links that have MPLS enabled.
- B. The TE information will only be advertised using application-specific sub-TLVs.
- C. The TE information will only be advertised using extended-link opaque LSAs.
- D. The TE information will only be advertised for the OSPF links that have both MPLS and RSVP enabled.
Answer: C
Explanation:
When using Segment Routing with Traffic Engineering (SR-TE) in OSPF, the TE information is advertised using extended-link opaque LSAs. The option "sr-te false" indicates that OSPF will not advertise the TE information in the OSPF database, thus the routers will not be aware of the TE information.
NEW QUESTION # 23
Which of the following statements about segment routing fast re-route is FALSE?
- A. Fast re-route is a temporary fix that becomes active for a short period of time after a local network failure.
- B. Fast re-route typically protects the active segment of a tunnel, but under certain conditions it can protect an end-to-end multi-segment tunnel instead.
- C. On a Nokia 7750 SR, R-LFA and TI-LFA can be enabled independently of each other.
- D. The parameter "max-sr-frr-labels" limits the number of labels that R-LFA can add to the data packet encapsulation.
Answer: C
Explanation:
On a Nokia 7750 SR, R-LFA and TI-LFA cannot be enabled independently; they must be enabled together. The parameter "max-sr-frr-labels" limits the number of labels that R-LFA can add to the data packet encapsulation.
NEW QUESTION # 24
Based on the exhibit, which of the following is a viable option for the Path Computation Element (PCE) to obtain all the necessary topology and traffic-engineering information from the network, so that it can calculate LSP paths on behalf of the PE routers?
- A. Establishing IGP adjacencies with routers R1 and R2
- B. Establishing an IGP adjacency with router R2
- C. Establishing BGP sessions using the BGP-LS address family with routers R3 and R4
- D. Establishing a BGP session using the BGP-LS address family with router R3
Answer: C
NEW QUESTION # 25
Which of the following is NOT one of the main goals of traffic engineering?
- A. Avoiding potential congestion points in the network.
- B. Defining traffic paths based on various constraints.
- C. Utilizing redundant links.
- D. Using the shortest possible path through the network to the destination.
Answer: D
NEW QUESTION # 26
Which of the following steps is NOT required when configuring IS-IS to support Segment Routing?
- A. The flooding scope of Segment Routing information.
- B. Enable interfaces used for Segment Routing under
- C. The Segment Routing Global Block range.
- D. MPLS label range reserved for Segment Routing.
Answer: B
Explanation:
Enable interfaces used for Segment Routing under: This step is not required, enabling interfaces used for Segment Routing is not necessary as the IS-IS protocol already takes care of the flooding of the routing information.
NEW QUESTION # 27
Which of the following statements about the Path Computation Element (PCE) is FALSE?
- A. A stateful PCE proactively monitors all the existing LSPs and triggers the necessary repairs and re-optimizations.
- B. A stateful PCE can allow LSPs to reserve bandwidth.
- C. The PCE can obtain topology and traffic-engineering information from the network using either a link-state IGP or BGP-LS.
- D. A stateless PCE can calculate cross-area traffic-engineering-constrained LSP paths.
Answer: B
Explanation:
Stateful PCE can monitor the existing LSPs and trigger necessary repairs and re-optimizations, but it does not have the capability to reserve bandwidth.
NEW QUESTION # 28
In the context of a network that includes a Path Computation Element (PCE), what is a PCC-initiated LSP?
- A. An LSP for which the initial path is calculated by the head-end router.
- B. An LSP that needs to be explicitly configured on the head-end router.
- C. An LSP for which the path repairs and re-optimizations must be triggered by the head-end router.
- D. An LSP whose existence and state are reported to the PCE.
Answer: D
Explanation:
A PCC-initiated LSP is an LSP that is established and controlled by the PCC (Path Computation Client) which is typically a head-end router. The PCC sends LSP setup and teardown requests to the PCE and also reports the existence and state of the LSPs to the PCE. The PCE then uses this information to perform path computation and to monitor the state of the LSPs.
NEW QUESTION # 29
Which of the following statements about path definitions is FALSE?
- A. In addition to the hops defined in the path list, the head-end and tail-end routers are implicitly added.
- B. Once a path is associated with an LSP, it cannot be used by other LSPs.
- C. A loose hop is one that does not have to be directly adjacent to the previous hop in the path list
- D. The path hops can be defined by either the system or physical interface IP address.
Answer: D
NEW QUESTION # 30
Examine the exhibit.
An LSP is being configured to start at R1 and end at R6 using local CSPF. The LSP has the following constraints. Include admin-group GREEN, use the TE metric and hop-limit 3. What routers will be included in the LSP path?
- A. R1, R3, R5, R6
- B. R1, R2, R4, R6
- C. R1, R5, R6
- D. R1, R6
Answer: A
NEW QUESTION # 31
Which of the following is not required to be advertised by a router participating in Segment Routing?
- A. SRGB when SRv6 is configured
- B. Local Node-SID
- C. Adjacency-SIDs
- D. Support for SR-MPLS for IPv4 or IPv6, or SRv6
Answer: A
Explanation:
SRGB when SRv6 is configured: This is not required to be advertised, SRGB(Segment Routing Global Block) is only used for SR-MPLS and is not needed when SRv6 is configured. Instead, SRv6 uses the IANA-assigned IPv6 address space.
NEW QUESTION # 32
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The Nokia 4A0-116 certification exam is an essential certification for professionals who work with Segment Routing technology. It is a comprehensive exam that covers all aspects of Segment Routing and is designed to ensure that candidates have a thorough understanding of the technology. The certification is highly valued by employers and is a great way for professionals to demonstrate their expertise and advance their careers.
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