4A0-C01 Online Practice Questions and Answers

In an IP datagram, which field identifies the receiving application

A. The protocol field of the transport layer header

B. The port field of the transport layer header

C. The protocol field of the network layer header

D. The port field of the network layer address

What is the source IP address in an OSPF update?

A. 224.0.0.5

B. 224.0.0.6

C. The unicast IP address of the interface the update is being sent on.

D. The system address of the router

Click on the exhibit.

An OSPFv3 router is attached to a non-OSPF domain that includes networks 2001:DB8:8::/64.2001 .DB8:9::/64 and 2001 :DB8:A::/64. Other routers in the OSPF domain see the prefix 2001, DB8:8::/64, but not the other two prefixes.

What could cause this?

A. The router is not configured as an asbr.

B. The router is not configured as an NSSA.

C. The export policy is not applied to OSPFv3.

D. The prefix list should be 2001:DB8:8::/46

Click on the exhibit.

Given the contents of the LSPs from routers R1 and R2, which of the following is TRUE?

A. Router R1 summarizes the prefixes from router R3 as 192.168.0.0/16 and router R2 does not summarize the prefixes.

B. Router R1 does not summarize the prefixes from routers R3 and R2 summarizes them as 192.168.0.0/16.

C. Router R1 summarizes the prefixes from router R3 as 192.168.0.0/20 and router R2 does not summarize the prefixes.

D. Router R1 does not summarize the prefixes from routers R3 and R2 summarizes them as 192.168.0.0/20.

E. Both routers R1 and R2 summarize the prefixes from R3 as 192.168.0.0/20.

F. Neither router R1 nor router R2 summarizes the prefixes from router R3.

Which of the following route types must be manually configured and will not re-route traffic when a link failure occurs in its path?

A. A route from IS-IS.

B. A route from OSPF.

C. A floating static route.

D. A static route.

Click on the exhibit button below.

LSP "toR8-5" requests fast reroute protection on the primary loose path. What could be done to remove the Failure Code shown?

A. CSPF must be enabled at head-end on fast reroute protected loose path LSPs

B. Fast reroute must first be enabled on the downstream routers.

C. CSPF must be enabled on all downstream loose hop routers.

D. Global revertive path optimization must be enabled so the path will be re-optimized around a failed node.

Click on the exhibit.

Router R1 distributes its globally routed address and its loopbacks into IS-IS. Routers R2 and R4 have their globally routed addresses in IS-IS. How many routes will router R4 have in its IPv6 route table?

A. 2

B. 3

C. 4

D. 5

E. 6

F. 7

Which of the following can be used for label signaling and distribution on the Alcatel-Lucent 7750 SR? Choose two answers

A. RSVP-TE

B. TDP

C. LDP

D. ADP

E. MPLS-TE

An Alcatel - Lucent 7750 SR receives a route from an IS-IS LSP with internal reachability, and receives the same route from an OSPF Type 5 LSA. If all protocol preferences are default, which route will be installed in the route table?

A. The route learned from IS-IS will be installed.

B. The route learned from OSPF will be installed.

C. Both routes will be installed.

D. There is not enough information to answer the question

Which of the following statements is TRUE regarding a VRF?

A. A VRF contains a single VPRN routes.

B. Every VRF in a PE is associated with one or more route target attributes.

C. Each VPRN needs a separate VRF in each PE router.

D. On the 7750 SR, by default, there is a unique one-to-one association between a VPN label and a VRF

E. All of the above statements are true.

F. All of the above statements are false.

Click on the exhibit.

What is the possible reason that the label for prefix 192.10.1.2/32 is not active?

A. The router does not have a route to reach to the peer 10.10.10.2/32.

B. The router does not have a route to reach to the prefix 192.10.1.2/32.

C. The router does not have an export policy defined to export the prefix 192.10.1.2/32 into LDP.

D. The router receives an invalid label for the prefix 192.10.1.2/32 from its peer.

Which protocol is used to signal the inner label for a L2-VPN service?

A. RSVP

B. IPCP

C. TLDP

D. PPP

E. Either RSVP or LDP

F. M-BGP

Click the exhibit.

Routes are exchanged between CE1 and PE1 using BGP. CE2 and PE2 use static routes to forward traffic to and from the VPRN. Which of the following is FALSE?

A. An export policy is required on PE1 to advertise routes to CE1.

B. An export policy is required on CE1 to advertise local routes to PEL

C. An export policy is required to advertise routes between the PE routers.

D. No export policy is required on PE2 or CE2 due to the static routes.

Given the output shown, which router is the ASBR in this network?

A. 10.10.10.2

B. 10.10.10.3

C. 10.10.10.4

D. 10.10.10.6

E. There is no ASBR configured in the network.

When configuring distributed services across a network, it is considered best practice to configure which of the following parameters as globally significant?

A. Customer ID and SAP ID.

B. Customer ID and Service ID.

C. SAP ID and Service ID.

D. SDP ID and Service ID.

E. SDP ID and SAP ID.

F. SDP ID and VC ID.