4A0-C01 Online Practice Questions and Answers

What is the default priority value used for electing the DR on an Alcatel-Lucent 7750 SR running OSPF on an Ethernet?

A. Priority of 0

B. Priority of 1

C. Priority of 64

D. Priority of 255

Which of the statements about the output in the exhibit is FALSE?

A. The system interface is configured with IPv6 address 2001DB8 1:100:1/128

B. All interfaces are configured for IPv4 and IPv6.

C. Interface "toR2" is configured with a globally routed IPv6 address.

D. Interface "toR3" is not configured for IPv6 with a global IPv6 address.

What command allows analysis of the Dijkstra calculation on the Alcatel-Lucent 7750 SR?

A. There is no such calculation in IS-IS

B. Show router isis database

C. Show router isis dijykstra

D. Show router isis spf

You wish to advertise LDP labels for all local networks; which is the most effective policy statement to use?

A. from prefix-list direct

B. match local

C. from protocol direct

D. match protocol direct

E. from protocol local

How many service labels must be signaled to bring up a fully-meshed VPLS among five PE routers?

A. 1

B. 5

C. 10

D. 20

What Alcatel-Lucent 7750 SR OAM tool can be used to verify the end-to-end connectivity of a service?

A. Sdp-ping

B. Isp-ping

C. Svc-ping

D. Sdp-mtu

By default, how does a VPLS handle a tagged frame received at the ingress of a null SAP on an Alcatel-Lucent 7750 SR?

A. The FCS is verified and kept in the customer frame. The VLAN tag is kept and transported over the network.

B. The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.

C. The FCS is verified and removed from the frame. The VLAN tag is kept and transported over the network.

D. The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.

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.

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.

If a Nokia 7750 SR is an iLER operating in pipe mode, which of the following regarding the TC field (EXP bits) is TRUE?

A. The TC field is set based on the value of the DSCP field inside the customer packet.

B. The TC field is set to a specific value via explicit administrative configuration.

C. The TC field is set to a system generated random number.

D. The TC field is set by the eLER.