4A0-C01 Online Practice Questions and Answers

The Alcatel-Lucent 7750 SR supports which two of the OSPF area types below?

A. Not So Stubby Areas

B. Level 1 Areas

C. Stub Areas

D. Partially Stubby Areas

In an OSPF Hello packet what fields must match all neighbor routers on the segment? (Choose 3)

A. Area ID

B. Hello and Dead Intervals

C. Stub flag

D. DR and BDR addresses

E. The list of neighbors

A new router is added to a broadcast network. What is used by IS-IS as the tie breaker for selecting the DIS if the priorities are the same?

A. The router with the highest system ID.

B. The router with the highest loopback address.

C. The Hello packet with the highest sequence number.

D. The existing DIS remains the DIS.

E. The router with the highest interface MAC address.

What is the replacement for ARP in IPv6?

A. The use of Broadcast messages in combination with Neighbor Advertisement messages.

B. The use of Anycast addresses in combination with Neighbor Advertisement messages.

C. The use of Solicited-node multicast addresses in combination with Neighbor Advertisement messages.

D. The use of Anycast addresses in combination with Link-Local Advertisement messages.

Which of the following best describes a unicast IPv6 address?

A. Fixed total of 128 bits, where 64 bits are used for routing and 64 bits are used as an interface identifier.

B. Fixed total of 128 bits, where 32 bits are used for the global prefix, 32 bits are used for the subnet and 64 bits are used as an interface identifier.

C. Variable total length, where at least 48 bits are used for the global prefix, 48 bits are used for the subnet and 64 bits are used as an interface identifier.

D. Variable total length, where at least 64 bits are used for routing and 64 bits are used as an interface identifier

In MPLS, at which device are packets assigned to a FEC?

A. LSR

B. LER

C. eLER

D. iLER

E. CE

How does an IS-IS router acknowledge the receipt of an IS-IS LSP on a point-to-point link?

A. They are explicitly acknowledged by sending a CSNP to the sender identifying the LSP.

B. They are implicitly acknowledged as a part of the link-state database synchronization and maintenance procedures.

C. They are explicitly acknowledged by sending a PSNP to the sender identifying the LSP.

D. They are implicitly acknowledged by the DIS multicast of CSNPs.

Click on the exhibit.

RSVP session state for LSP 1 has timed out on router R3. Which of the following actions will router R3 initiate to clear the RSVP session?

A. Send a PATH Tear message toward router R6.

B. Send a PATH Tear message toward router R1.

C. Send a PATH Error message toward router R6.

D. Send a PATH Error message toward router R1.

Click the exhibit.

Which of the following statements about the E-pipe service is TRUE?

A. The service is a local service.

B. The service requires a second spoke SDP on this router.

C. The service's VC ID is 44.

D. The service will accept VLAN tag 100.

All links have 1Gbps unreserved bandwidth initially and all LSPs have the least-fill feature enabled. After

the two LSPs have been signaled as shown, two additional LSPs are configured. LSP-3 is signaled first

with bandwidth of 300Mbps.

LSP-4 is signaled after with bandwidth of 400Mbps. Which paths will CSPF choose for LSP-3 and LSP-4?

A. LSP-3 takes R1-R3-R5-R6 and LSP-4 takes R1-R2-R4-R6.

B. LSP-3 takes R1-R2-R4-.R6 and LSP-4 takes R1-R3-R5-R6.

C. Both LSP-3 and LSP-4 take R1-R3-R5-R6.

D. Both LSP-3 and LSP-4 take R1-R2-R4-R6.

E. CSPF randomly chooses one of the equal cost paths for the two LSPs.