4A0-101 Questions and Answers
QUESTION: 297
Click on the exhibit.
In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Assuming that there are no stub networks, which of the following statements regarding Type 5 LSA generation is TRUE?
Router R1 generates a Type 5 LSA that is flooded to area 1 only.
Router R1 generates a Type 5 LSA that is flooded to areas 1 and 0. Router R6 generates a Type 5 LSA that is flooded to area 2.
Router R1 generates a Type 5 LSA that is flooded to areas 0.1, and 2.
Router R3 generates a Type 5 LSA that is flooded to areas 0 and 2
Type 5 LSAs are not generated in this network topology.
Answer: C
QUESTION: 298
Which of the following are major features of OSPF? (Choose 2.)
Fast reroute capability.
Control traffic prioritization.
Route redistribution.
Traffic engineering extensions.
Cut through forwarding.
Answer: C, D
QUESTION: 299
An Alcatel-Lucent 7750 SR has a port with the MAC address of 00;03:FA:AC:77: AF. The port is bound to an interface. If IPv6 is then enabled on that interface .what will the link- local address be?
A. FE80::203:FAFF:FEAC:77AF/64 B. 2000:: 203:FAFFFEAC:77AF/64
FE80::3FAFF:FEAC:77AF/64
FC00::203:FAFF:FEAC:77AF/64
FC00::3:FAFF:FEAC:77AF/64
Answer: A
QUESTION: 300
Exhibit
A service provider is deploying a 6over4 tunnel to connect a customer's branch office IPv6 network to the corporate headquarters as shown in the exhibit. Which command is used to create a default route on PE2 for the branch office network?
configure router static-route 0.0.0.0/0 indirect 10.10.10.2
configure router static-route 0.0.0.0/0 indirect 2001:DB8:1:100::1
configure router static-route ::/0 indirect 10.10.10.2
configure router static-route::/0indirect2001:DB8:1:100::1
configure outer static-route::/0indirect2001:DB8:1:101::1
Answer: C
QUESTION: 301
Which of the following regarding IS-IS DIS is FALSE?
L1 and L2 routers elect separate DIS's.
DIS uses a specific Ethernet multicast address to communicate with other routers on the broadcast network.
If a new router starts up in a LAN and has a higher interface priority, the new router preempts the original DIS and becomes the DIS.
In broadcast multi-access networks, such as Ethernet, one router is elected as the DIS and a second router as the backup DIS.
Answer: D
QUESTION: 302
What are the three databases that are maintained by a link-state protocol?
Neighbor, adjacency, routing.
Neighbor, topology, forwarding.
Topology, routing, forwarding.
Topology, forwarding, traffic classification.
Neighbor, adjacency, forwarding.
Answer: B
QUESTION: 303
Click on the exhibit.
OSPF router R2 has both point-to-point and broadcast interfaces and it is not a DR for any interfaces. Router R2 detects the link failure between itself and router R1. Which of the following is correct?
Router R2 sends an update to 224.0.0.5 on its broadcast and point-to-point interfaces. The DR does not send any updates.
Router R2 sends an update to 244.0.0.5 on its point-to-point interfaces. The DR sends an update to 224.0.0.6 on the broadcast network.
Router R2 sends an update to 224.0.0.5 out its point-to-point interfaces and an update to
224.0.0.6 out its broadcast interface. The DR sends updates to 224.0.0.5 on the broadcast network.
Router R2 sends an update to 224.0.0.6 out its point-to-point interfaces and an update to
224.0.0.5 out its broadcast interface. The DR sends an update to 224.0.0.6 on the broadcast networks.
Answer: C
QUESTION: 304
Which of the following best describes distance vector protocols?
They periodically exchange copies of routing tables between adjacent routers and do not maintain any knowledge of links on non adjacent routers.
They use shortest path first algorithms, do not exchange copies of routing tables between
routers and do maintain knowledge of links on non adjacent routers.
They periodically exchange copies of routing tables between adjacent routers and maintain knowledge of links on non adjacent routers.
They use shortest path first algorithms, exchange copies of routing tables between routers and maintain knowledge of links on non adjacent routers.
Answer: A
QUESTION: 305
The solicited node address for the destination node address of 2001:DB8::30A:216 4DFF:FE14:6CAE is:
A. 2001::FF:FE:14:6CAE B. 2001::1:FF:14:6CAE
C. FF02.DB8::30A:216:4DFF:FE14.6CAE D. FF02::1:FF14:6CAE
Answer: D
QUESTION: 306
Click on the exhibit.
What does the field "2001:DB8:111::/64" represent?
The router's system address.
The next-hop prefix.
The interface's global prefix.
The next-hop system address.
Answer: C
QUESTION: 307
An Alcatel-Lucent 7750 SR is configured with an export policy to redistribute a loopback prefix into OSPFv3. What type of LSA advertises the prefix to the other OSPFv3 routers in the same area?
Router LSA
AS External LSA
Intra-Area Prefix LSA
Inter-Area Prefix LSA
Network LSA
Answer: B
QUESTION: 308
How is the DR selected when an OSPF router is added to a broadcast network?
The current DR is selected, if there is one. Otherwise, the router with the lowest priority is the DR. If priorities are the same, the DR is chosen based on the lowest RID.
The current DR is selected, if there is one. Otherwise, the router with the highest priority is the DR. If priorities are the same, the DR is chosen based on the highest RID.
The router with the lowest priority is the DR. If priorities are the same, the current DR is selected. Otherwise the DR is chosen based on the lowest RID.
The router with the highest priority is the DR. If priorities are the same, the current DR is selected. Otherwise the DR is chosen based on the highest RID.
Answer: B
QUESTION: 309
Which of the following best describes the features of Classless Inter-Domain Routing (CIDR)?
Automatic summarization and the use of IP addresses that use any number of bits for the network portion of the address.
Manual summarization and the use of IP addresses that use any number of bits for the network portion of the address.
Automatic summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address.
Manual summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address.
Answer: B
QUESTION: 310
Click on the exhibit.
Before the link failure, all routers have operational OSPF adjacencies between them and there is a BFD session between routers R1 and R3. After the link failure, which of the following affects the IGP convergence time?
The convergence time depends on the value of the OSPF hello timers on routers R1 andR3.
The convergence time depends on the value of the OSPF hello timers and Dead interval on routers R1 and R3.
The convergence time depends on the value of the BFD interval and multiplier settings on routers R1 andR3.
The convergence time depends on the time taken by the switches to detect the link failure.
Answer: C
QUESTION: 311
Click on the exhibit.
Assume that OSPFv3 is properly configured on all routers and that router R4 advertises its system prefix into Area 0. Which of the following best describes how router R5 learns router R4's IPv6 system prefix?
With a Router LSA originated by router R1.
With a Router LSA originated by router R5.
With a Router LSA originated by router R4.
With an Inter-Area Prefix LSA originated by router R1.
With an Inter-Area Prefix LSA originated by router R5.
With an Inter-Area Prefix LSA originated by router R4.
Answer: D
QUESTION: 312
Which of the following best describes the forwarding of a IPv6 packet that has a destination anycast address?
It is sent to all nodes on the local link.
It is sent to all nodes on the local network.
It is sent to all nodes that have joined the anycast group.
It is sent to the nearest node that is assigned the anycast address
It is sent to all nodes that are assigned the anycast address.
Answer: D
QUESTION: 313
WhichOSPFv3LSA type is generated by an ABR to advertise prefixes from one area to
another?
AS External
Intra-Area Prefix
Inter-Area Router
Inter-Area Prefix
Answer: A
QUESTION: 314
Which of the following best describes an OSPF Type 3 LSA?
A Type 3 LSA is generated by an ASBR only when route summarization is configured.
A Type 3 LSA is generated by an ABR only when route summarization is configured.
A Type 3 LSA is generated by an ASBR to describe routes to routers outside the area.
A Type 3 LSA is generated by an ABR to describe routes to routers outside the area.
Answer: D
QUESTION: 315
Which of the following is a characteristic of OSPFv2 that was NOT preserved in OSPFv3?
LSA flooding mechanism.
Totally stubby areas.
MD5 authentication.
DR and BDR election.
