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H12-221 Sample Questions Answers

Questions 4

A BGP finite state machine has the following states:

Active

OpenConfirm

Idle

Established

OpenSent

What is the state transition sequence to establish a successful BGP peer relationship?

Options:

A.

Idle-OpenSent-OpenConfirm-Active-Established

B.

Idle-Active-OpenSent-OpenConfirm-Established

C.

Active-Id le-OpenSent-OpenConfirm-Established

D.

Idle-Active-OpenConfirm-OpenSent-Established

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Questions 5

What does the IP-prefix-filter "ip ip-prefix test index 10 deny 0.0.0.0 0 less-equal 32" mean?

Options:

A.

Matching only default routes

B.

Matching all routes

C.

Denying only default routes

D.

Denying all routes

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Questions 6

Which of the following statements belong to BGP community attribute? (Select 3 answers)

Options:

A.

NO_EXPORT

B.

NO_ADVIERTISE

C.

LOCAL_EXPORT_SUBCONFED

D.

NO_BROADCAST

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Questions 7

If the subnet mask for Class A address is 255.255.240.0, how many bits are used for subnetting?

Options:

A.

4

B.

5

C.

9

D.

12

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Questions 8

The ABR in a Totally Stubby area will not advertise Type-3, Type-4, and Type-5 LSAs into the Totally Stubby area. Instead, the ABR will advertise a default route to the Totally Stubby area enabling packet forwarding to other destinations.

Options:

A.

TRUE

B.

FALSE

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Questions 9

Which of the following conditions must be met for importing routes into BGP using the network command? (Select 2 answers)

Options:

A.

The routes must be optimal in the IP routing table.

B.

The routes do not need to match the specified mask length.

C.

The routes must match the specified mask length.

D.

The routes must be IGP routes.

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Questions 10

The route selection tool route-policy" can set and filter BGP attributes based on pre-defined conditions. Therefore, this tool is often used to define policies towards a BGP peer or during route generation.

Options:

A.

TRUE

B.

FALSE

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Questions 11

Which of the following statements regarding the features of VLSM are true? (Select 2 answers)

Options:

A.

VLSM supports both IPv4 and IPv6.

B.

VLSM supports overlapping address ranges.

C.

VLSM allows for summarization of routes

D.

VLSM can divide a subnet into smaller subnets.

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Questions 12

dis igmp group verbose

IGMP interface group report information

Ethernet6/1/0(10.1.1.1):

Total 1 IGMP Group reported

Group: 225.0.0.1

Uptime: 00:09:03

Expires: 00:02:09

Last reporter: 10.1.1.30

Last-member-query-counter: 0

Last-member-query -timer-expiry: off

Group mode: exclude

Versionl-host-present-timer-expiry: off

Version2-host-present-timer-expiry: 00:02:09

The preceding information is generated after a router receives a Report message from group 225.0.0.1 through Ethernet 6/1/0. Which type of Report message will not be processed by the router?

Options:

A.

IS_IN

B.

ALLOW

C.

BLOCK

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Questions 13

Generally, the performance of an IP-prefix-filter is greater than that of an ACL.

Options:

A.

TRUE

B.

FALSE

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Questions 14

Which of the following BGP attributes cannot be advertised to other neighboring AS?

Options:

A.

LOCAL_PREF

B.

AS_PATH

C.

COMMUNITY

D.

ORIGIN

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Questions 15

If there are two BGP routes with the same destination address but different next hops in a BGP routing table, then which statement regarding the two BGP routes is true?

Options:

A.

Both BGP routes are advertised to other BGP peers.

B.

Only the optimal route between the two is advertised to other BGP peers.

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Questions 16

Which of the following is the address range assigned by IANA for SSM service in IPv4?

Options:

A.

232.0.0.0/24

B.

225.0.0.0/8

C.

232.0.0.0/8

D.

239.0.0.0/8

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Questions 17

What are the differences between the IGMP versions 1, 2 & 3? (Select 2 answers)

Options:

A.

IGMPv1/v2 cannot elect devices which may send queries but IGMPv3 can.

B.

IGMPv2/v3 members can actively leave groups, whereas in IGMPv1members cannot

C.

IGMPv1/v2 do not support the SSM service model but IGMFV3 does.

D.

IGMPv1/v2 do not support group-specific queries but IGMPv3 does.

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Questions 18

Which statements regarding prerequisites to establish a BGP peer relationship are true? (Select 2 answers)

Options:

A.

BGP peers must be manually configured.

B.

A TCP connection must be established between two neighboring routers.

C.

BGP peers must exchange routing information.

D.

MD5 authentication must be configured between BGP peers.

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Questions 19

Which of the following statements are correct regarding BGP attributes? (Select 2 answers)

Options:

A.

Till now, there are 16 BGP attributes

B.

BGP attribute can be extended to 256 types

C.

Well known discretionary attribute may not be included in each BGP update message, such as origin attribute

D.

AS_PATH is an optional transitive attribute

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Questions 20

Assume that the subnet mask is 255.255.255.248. Which of the following are valid host addresses? (Select 3 answers)

Options:

A.

192.168.200.87

B.

196.123.142.190

C.

223.168.210.100

D.

220.100.100.154

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Questions 21

Which of the following attributes must exist in the BGP update messages? (Select 3 answers)

Options:

A.

LOCAL_PREF

B.

NEXT_HOP

C.

ORIGIN

D.

AS_PATH

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Questions 22

Which of the following connection types can a Router LSA describe? (Select 3 answers)

Options:

A.

Point-to-point

B.

Star

C.

Transit

D.

Virtual link

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Questions 23

An OSPF neighbor relationship fails to establish and the OSPF error information is displayed as follows. Which of the following is most likely the cause?

Options:

A.

Router IDs conflict.

B.

Area IDs are mismatched.

C.

Network masks are inconsistent.

D.

Authentication types are inconsistent.

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Questions 24

Which of the following situations will occur when the command "multicast bad balance" is

configured? (Select 3 answers)

Options:

A.

If there exists no unicast equal-cost routes, multicast load balancing fails.

B.

If group address-based load splitting is employed, balanced distribution of entries over equal-cost routes cannot be ensured due to hash function limitations.

C.

Balanced distribution of entries over equal-cost routes can be ensured as long as multicast load balancing is performed.

D.

During multicast load splitting, traffic may not be balanced among equal-cost routesbecause multicast load balancing is based on multicast entries not multicast data packets.

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Questions 25

Which of the following elements together uniquely identify a LSA? (Select 3 answers)

Options:

A.

LS type

B.

Link state ID

C.

Advertising Router

D.

LS Sequence number

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Questions 26

The ABR of an NSSA does not advertise Type-4 and Type-5 LSAs to an NSSA instead it imports external routes into the NSSA,

Options:

A.

TRUE

B.

FALSE

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Questions 27

One route-policy may have several nodes with each node containing a node ID. Each node may also have multiple "if-match" and "apply" clauses. Which of the following statements are true? (Select 2 answers)

Options:

A.

Different nodes are in an OR relationship.

B.

Different nodes are in an AND relationship.

C.

If-match clauses of a node are in an AND relationship,

D.

If-match clauses of a node are in an OR relationship.

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Questions 28

Which session is established between BGP peers?

Options:

A.

Telnet

B.

Send Hello packet

C.

UDP

D.

TCP

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Questions 29

Which of these addresses are reserved for use by multicast applications?

Options:

A.

Class A

B.

Class B

C.

Class E

D.

Class D

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Questions 30

Which of the following messages needs to be sent out by a downstream interface when recovering from the pruned state to the forwarding state in PIM DM?

Options:

A.

Join

B.

Assert

C.

Prune

D.

Graft

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Questions 31

In VRP, by default, a BGP router does not automatically send a refresh packet to its BGP peers for retransmitting an Update packet after the inbound routing policy of the BGP peers changes.

Options:

A.

TRUE

B.

FALSE

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Questions 32

Which of the following statements regarding multicast MAC addresses are true (Select 3 answers)

Options:

A.

The high-order 24 bits of a multicast MAC address are 0x01005e while the low-order 23 bits of a multicast MAC address are the low-order 23 bits of a multicast IP address.

B.

One multicast MAC address can map 32 different IP multicast addresses.

C.

Multicast MAC addresses are used in the link layer to identify receivers that are in the same multicast group.

D.

One multicast MAC address can map only one IP multicast address.

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Questions 33

Which of the following routers have multicast routing entries even when there is no receiver on the network? (Select 2 answers)

Options:

A.

Source's DR

B.

Receiver router

C.

Intermediate router

D.

RP

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Status:
Expired
Exam Code: H12-221
Exam Name: HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network)
Last Update: Apr 14, 2023
Questions: 225
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