Alcatel Lucent Interior Routing Protocols and High Availability Set 2

1.

A router is configured with the command "configure router ecmp 4". There are two best paths to a given destination with an equal cost in the IGP. Which of the following best describes the handling of traffic to this destination?

The router installs two routes for the destination with two different next hops. A hashing algorithm is used to distribute traffic over the two paths. The router installs two routes for the destination with two different next hops. Traffic is evenly distributed over the two paths. The router installs four routes for the destination with four different next hops. A hashing algorithm is used to distribute traffic over the four paths. The router installs four routes for the destination with four different next hops. Traffic is evenly distributed over the four paths. The router installs one route for the destination. Traffic is evenly distributed over the two paths.

2.

Which of the following statements regarding OSPF routing updates on a point-to-point link is true?

On a point-to-point link, there is no need for a DR and BDR election; all routing updates are sent to 224.0.0.5. On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network. On a point-to-point link, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network. On a point-to-point link, there is no need for a DR and BDR election. All routing updates are sent to the unicast address of the neighbor's interface.

3.

When IS-IS is electing a DIS, what is used as the tie breaker on an Alcatel-Lucent 7750 SR, if the priorities are the same?

The system ID The loopback address The sequence number of the Hello packet The device that first initiated communication becomes the DIS The highest interface MAC address

4.

Static routing is to be used in a network between a corporate head office with many connected networks, and a branch office with one connection to the head office. Which of the following best describes the likely configuration?

The corporate head office router should have a default route and the branch site should have a more specific static route The corporate head office router and the branch office router should both have specific static routes. The corporate head office router and the branch router should both have default routes. The corporate head office router should have a specific static route and the branch office router should have a default route.

5.

Which of the following TLV fields is included in an IS-IS Hello packet on broadcast interfaces but not on point-to-point interfaces?

The area addresses TLV The intermediate system neighbors TLV The IP interface address TLV The authentication information TLV

6.

Two IS-IS L1/L2 routers are in the same area on the same Ethernet segment. One of the routers is the DIS. How many adjacencies will be formed between them?

None 1 2 3 4

7.

An interface is configured on a router for OSPF but the command "show router ospf neighbor" does not show any neighbors. Which of the following is NOT a possible cause?

An OSPF database description packet has not been received from the neighbor. The interface facing the neighbor is down. The interface is included in a different area than the neighbor router. The router has not received a valid OSPF Hello packet from its neighbor.

8.

An interface has a MAC address of 24-16-4d-16-b5-3d. What link-local address will be assigned to this interface?

fe80::2416:4dff:fe16:b53d fe80::2616:4dff:fe16:b53d ff80::2416:4dff:fe 16:b53d ff80::2616:4dff:fe 16:b53d fd80::2416:4dff:fe16:b53d

9.

Which of the following statements best describes the function of an OSPF Type 4 LSA?

A Type 4 LSA is originated by an ABR to describe a route to an ASBR to routers outside the area. A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outside the area. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the backbone area to provide routing information. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the stub area to provide routing information.

10.

Which of the following statements concerning OSPFv3 is false?

MD5 Authentication is not supported. Router LSAs do not carry IPv6 prefix information NSSA is not supported in OSPFv3. OSPFv3 uses a 32-bit router ID.

Alcatel Lucent Interior Routing Protocols and High Availability Set 2

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