CCNP: BSI Chapter 1 Answer

Which of the following items must match in an OSPF hello packet in order for two routers to become OSPF neighbors? (Select three.)


* Authentication password

Address of DR/BDR

Neighbors

* Area ID

* Hello/dead intervals

Coscorp network administrator assigns an address of 239.255.8.5 to an application running on a device with an Ethernet MAC address of 01.b2.7d.05.f1.80. Which Layer 2 multicast address will this device use?


01.b2.7d.05.f1.80

01.b2.7d.0a.08.05

01.00.5e.05.f1.80

*01.00.5e.7f.08.05

ff.ff.ff.ff.ff.ff

EBGP is being used to advertise the Coscorp IP blocks to the Internet. Which statement is true about EBGP?


EBGP requires a full mesh

A static route can be used to form an adjacency between neighbors

*The next hop does not change when BGP updates are exchanged between EBGP neighbors

An internal routing protocol can be used to reach an EBGP neighbor

None of the above.

Coscorp uses OSPF as the routing protocol in their IPv6 network. Which three statements about configuring OSPF in an IPv6 network are true? (Select three).


*OSPF version 3 will support IPv6

*Multiple instances of OSPF for IPv6 can be run on a link

IPv4 address cannot be used as the router ID in OSPF for IPv6

OSPF version 2 will support IPv6.

*The interface command ipv6 ospf area is all that is required to enable OSPF for IPv6 on an interface.

OSPF networks create Link State Advertisements (LSAs). What kind of LSA is conceived by an Area Border Router (ABR) containing route summarization of area subnets?


"Router Link, type 1"

"Router Link, type 8"

"Network summary link, type 3"

*"AS external summary link, type 4"

None of the above

Which three of the statements below correctly describe the characteristics of Autonomous Systems in routed networks? (Select three)


*An AS is a group of routers under the same technical administration

"With an AS, routes learned through BGP can be redistributed using interior gateway protocols"

*An AS uses exterior gateway protocols (EGPs) to exchange information with other autonomous systems

*"Within an AS, all routers must run either BGP or IBGP"

"Within an AS, routes learned through an interior protocol cannot be redistributed using BGP to other autonomous systems "

"Coscorp network is using route summarization to decrease the size of the routing tables. In an EIGRP network, which of the following describes the best method for implementing summarization?"


At WAN interfaces

Manually at major network boundaries

Dynamically at discontiguous interfaces

*Dynamically at major network boundaries

None of the above

The IGMP snooping feature has been enabled on the Coscorp multicast network. Which two statements are true about Internet Group Management Protocol (IGMP) snooping? (Select two).


IGMP snooping and Cisco Group Management Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own

IGMP snooping and CGMP can be used simultaneously on a switch

*IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IGMP message towards the router

*IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches

IGMP snooping is enabled with the ip multicast-routing global configuration command.

Identify three characteristics of EIGRP feasible successors? (Select three).


*A feasible successor must be the next best router with a lower cost and a loop-free path.

The feasible successor can be found in a routing table

*"If the successor becomes unavailable, then the feasible successor can be used immediately without recalculating for a lost route"

*"If the advertised distance of the non-successor route is less than the feasible distance of best route, then that route is identified as a feasible successor"

Traffic will be load balanced between feasible successors with the same advertised distance

A network administrator has decided to use IS-IS instead of OSPF in the Coscorp network. Which three are benefits of IS-IS over OSPF? (Select three.)


*IS-IS supports network layer protocols other than IP

IS-IS does not rquire Hello packets to establish neighbor relationships

IS-IS supports more routers in an area

*IS-IS produces fewer link state PDUs for a given network

*IS-IS requires fewer neighbor relationships in a broadcast multi-access network

You wish to represent some IPv6 networks in a shorter form. What number is valid representation for the 200F:0000:0000:AB00:0000:0000:0000:0000 /56 IPv6 prefix?


200F:0:0:AB /56

200F::AB00 /56

200F::AB /56

*200F:0:0:AB00:: /56

None of the above

What metric would be assigned to redistribute BGP routes into OSPF when the metric is not assigned?


200

20

*1

5

Infinity

Every routing protocol has a loop prevention mechanism. Which BGP attribute is used by BGP routers to prevent routing loops?


Origin

Weight

*AS-Path

Next-hop

Local Preference

On a point-to-point IS-IS network connection, the PSNP (Partial Sequence Number Packet) is responsible for which of the following?"


*Acknowledging LSPs

Replacing IIH packets

Establishing adjacencies

Sending Link-State changes

None of the above

Coscorp has migrated to IPv6 in their network. Which three IPv6 notations represent the same address? (Select three).


*2031::130F::9C0:876A:130B

*2031:0:130F:::9C0:876A:130B

2031:0:130F:0:0:09c0:876A:130B

*2031:0:130F::9c0:876A:130B

2031:0000:130F:0000:0000:09C0:876A:130B

Which of the following OSPF routes are supported in a Totally Stubby area? (Select two.)


O

O N2

*O* IA

O* N2

*O IA

What are three key concepts that apply when configuring the EIGRP stub routing feature in a hub and spoke network? (Select three).


EIGRP stub routing should be used on hub routers only

A hub router prevents routes from being advertised to the remote router

*Only remonte routers are configured as stubs

*A stub router should have only EIGRP hub routers as neighbors

*Stub routers are not queried for routes

Which three statements are true about EIGRP operation? (Select three).


*"When summarization is configured, the router will also create a route to null 0"

"The summary route remains in the route table, even if there are no more specific routes to the network"

*Summarization is configured on a per-interface level.

*Automatic summarization across major network boundaries is enabled by default

The maximum metric for the specific routes is used as the metric for the summary route