Nokia 4A0-C01 Online Practice Questions and Exam Preparation

Nokia 4A0-C01 Online Questions & Answers

• Question 21:

  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.
  A. The options field is set to router alert.

• Question 22:

  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 and after the link is restored, which of the following is FALSE?

  

  A. Router R3 starts the LDP-Sync timer after recovering the LDP session on R3-R6.
  B. Router R1 continues to use R1-R2-R4-R6 until the LDP-Sync feature is disabled.
  C. Router R3 advertises the maximum metric for the link to router R6.
  D. Router R1 receives a label from router R3 after the LDP session is established on R3-R6.
  B. Router R1 continues to use R1-R2-R4-R6 until the LDP-Sync feature is disabled.

• Question 23:

  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 is signaled for "lsp-toR2".
  B. MPLS Echo Request packets are sent within the LDP tunnel that is signaled for Mlsp- toR2".
  C. MPLS Echo Request packets are IP-routed to the destination address of "lsp-toR2".
  D. MPLS Echo Request packets are sent to the destination address of "lsp-toR2" over TCP.
  A. MPLS Echo Request packets are sent within the RSVP-TE tunnel that is signaled for "lsp-toR2".

• Question 24:

  Which of the following best completes the sentence: "An Internet Enhanced Service is a_____________ service where the CE communicates with a ________________interface to send and receive traffic.

  A. distributed/virtual
  B. local/sub
  C. routed/Layer 3
  D. distributed/routed
  E. Layer 2/loopback
  C. routed/Layer 3

• Question 25:

  Click the exhibit.

  

  R1 and R4 are providing a VPRN for the CEs. Which of the following about the traceroute run on router R5 is TRUE?

  A. The traceroute will only show one hop: R5-R6.
  B. The traceroute will only show 2 hops; R5-R1 and R4-R6.
  C. The traceroute will only show 3 hops: R5-R1, R1-R4 and R4-R6.
  D. The traceroute will show one hop for each router in the provider core and one for each CE-PE hop.
  C. The traceroute will only show 3 hops: R5-R1, R1-R4 and R4-R6.

• Question 26:

  Which of the following is described by the following statement? An LSR propagates a label mapping only for an FEC for which it has a label mapping for the FEC next-hop.

  A. Independent control mode.
  B. Ordered control mode.
  C. Liberal label retention.
  D. Conservative label retention.
  E. Downstream on demand
  B. Ordered control mode.

• Question 27:

  Which LSA is used for OSPF-TE purposes?

  A. Type 9 LSA ?Link local LSA
  B. Type 10 LSA ?Area local LSA
  C. Type 8 LSA ?TE router LSA
  D. Type 11 LSA ?Network LSA
  B. Type 10 LSA ?Area local LSA

• Question 28:

  What is the primary purpose of classless interdomain routing (CIDR)?

  A. To support classful routing protocols.
  B. To allow IP routes to be defined using any number of bits for the network portion of the address.
  C. To allow interdomain routing between an IGP and EGP such as OSPF and BGP.
  D. To simplify the allocation of IP address space by defining a fixed size for the network portion of the address for each of the address classes.
  B. To allow IP routes to be defined using any number of bits for the network portion of the address.

• Question 29:

  Click on the exhibit button below.

  

  Which of the following is the correct configuration on 6VPE1 for a BGP peering session with CE1?

  A. PE1>config>service>vpm>bgp#info --------------------------------------------------- group "toCE1" family ipv6 export "mbgp-bgp" neighbor 2001:db8:12::1 peer-as 64497 exit exit
  B. PE1>config>service>vpm>bgp#info --------------------------------------------------- group "toCE1" family ipv6 export "mbgp-bgp" neighbor 2001:db8:12:1 peer-as 64496 exit exit
  C. PE1>config>router>bgp#info --------------------------------------------------- group "toCEl" family ipv6 export "mbgp-bgp" neighbor 2001 db8:12::1 peer-as 64497 exit exit
  D. PE1>config>router>bgp#info --------------------------------------------------- group "toCE1" family ipv6 export "mbgp-bgp" neighbor 2001:db8:12::1 peer-as 64496 exit exit
  A. PE1>config>service>vpm>bgp#info --------------------------------------------------- group "toCE1" family ipv6 export "mbgp-bgp" neighbor 2001:db8:12::1 peer-as 64497 exit exit

• Question 30:

  What event causes an OSPF adjacency to change from 'down' to 'two way'?

  A. The router receives a link-state update in response to a link-state request.
  B. The router receives a hello packet from its neighbor that contains its own router ID in the neighbor list.
  C. The router receives a database description packet from its neighbor.
  D. The router receives a link-state acknowledgment in response to a link-state update.
  B. The router receives a hello packet from its neighbor that contains its own router ID in the neighbor list.