Nokia 4A0-115 Exam Questions Answers

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Nokia Ethernet Virtual Private Network Services Exam 4A0-115 Questions and Answers

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Page: 1 / 8
Total Questions: 40

Questions & Answers PDF

• Question 1

  

  Which of the following statements about PE-to-PE MAC address advertisement is FALSE?

  • The service distinguisher (label or VNI) is advertised with the MAC/IP EVPN update.
  • Route targets are used to uniquely identify routes between EVIS in the case of MAC address overlaps.
  • A PE uses a single MP-BGP session with a remote peer to exchange the routes for all EVIs.
  • A PE advertises locally-learned MAC addresses to remote PES using EVPN type-2 routes.

  Reveal Answer Answer: B Next Question

• Question 2

  

  A Layer-3 EVPN service is configured to use the interface-ful unnumbered forwarding model. Which of the following statements is FALSE?

  • Each participating PE advertises a MAC/IP route that carries the MAC address of SBD IRB interface.
  • IP-Prefix routes exchanged between PES include a non-zero MAC address as an overlay index.
  • The VPRN service is configured to allow the advertisement of IP prefixes.
  • The SBD IRB interface configured in the VPRN service has no IP address assigned to it.

  Reveal Answer Answer: D Next Question

• Question 3

  

  Which of the following statements about EVPN auto-discovery per Ethernet segment (A-D per ES) routes is TRUE?

  • The updates include an Ethernet segment identifier label that is used in loop prevention.
  • The updates advertise the Ethernet segment availability in a given EVPN service.
  • The updates include an MPLS label that is set to a non-zero value.
  • The updates include an Ethernet tag ID that is set to zero.

  Reveal Answer Answer: D Next Question

• Question 4

  

  Which of the following statements about EVPN Layer-3 services that utilize the interface-ful model is TRUE?

  • EVPN MAC/IP routes are used to advertise the IP prefixes of subnets attached to a VPRN.
  • VPRN instances are interconnected using a supplementary broadcast domain (SBD) VPLS.
  • Intra-subnet traffic is carried over the tunnels provided by the SBD VPLS.
  • The MAC/IP routing information is used to populate the VPRN routing table at the remote PEs.

  Reveal Answer Answer: C Next Question

• Question 5

  

  Which of the following statements about the operation of a single-homed EVPN VPWS is TRUE?

  • The same tag ID must be configured for the local attachment circuit (AC) at each PE.
  • Each PE advertises a MAC route and an A-D per EVI route when its local AC becomes operationally UP.
  • The advertised A-D per EVI route includes a non-zero tag ID and a non-zero MPLS label.
  • Each PE verifies that the received tag ID matches its configured local AC tag ID.

  Reveal Answer Answer: C Next Question

• Question 6

  

  Which of the following statements about the EVPN data plane is FALSE?

  • EVPN allows a service provider to deliver multiple services over a single core network.
  • The customer data is encapsulated and then tunneled between the PE routers.
  • EVPN-MPLS encapsulated data has a label that uniquely identifies each service.
  • EVPN-MPLS provides services over a simple IP network.

  Reveal Answer Answer: D Next Question

• Question 7

  

  Which of the following EVPN routes are exchanged to support the operation of a multi-homed EVPN VPWS?

  • Auto-discovery per EVPN instance (A-D per EVI) routes and Auto-discovery per Ethernet segment (A-D per ES) routes only
  • MAC/IP routes, A-D per EVI routes, and A-D per ES routes
  • A-D per EVI routes, A-D per ES routes, and Ethernet segment (ES) routes
  • A-D per EVI routes and ES routes only

  Reveal Answer Answer: C Next Question

• Question 8

  

  • Proxy-ARP/ND is operational for a VPLS. Which of the following statements is FALSE?
  • The PE has proxy-ARP and dynamic-populate enabled for the VPLS.
  • The proxy-ARP table is populated by snooping IP packets received from remote PEs.
  • When the PE learns a local host IP address, it adds an entry into its proxy-ARP table.
  • The PE advertises a MAC/IP route that includes the MAC and IP address of a local host.

  Reveal Answer Answer: C Next Question

• Question 9

  

  The interface-ful numbered model is used for a Layer-3 EVPN service. Which of the following statements is FALSE?

  • EVPN routes are advertised with a service label associated with the SBD VPLS.
  • IP-Prefix routes exchanged between PES include a non-zero gateway IP address as an overlay index.
  • EVPN MAC/IP routes are used to advertise the MAC and IP addresses of local hosts.
  • EVPN MAC/IP routes are used to advertise the MAC and IP addresses of SBD IRB interfaces.

  Reveal Answer Answer: D Next Question

• Question 10

  

  Which of the following best describes the operation of a non-designated forwarder (non-DF) in a single-active Ethernet segment?

  • Blocks Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM
  • Allows Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM
  • Blocks Tx unicast, blocks Rx unicast, blocks Tx BUM, blocks Rx BUM
  • Allows Tx unicast, blocks Rx unicast, allows Tx BUM, blocks Rx BUM

  Reveal Answer Answer: A Next Question

Page: 1 / 8
Total Questions: 40

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