H31-122-ENU Huawei Certified Network Professional

The following questions are updated on June 1, 2017. Huawei add some new questions. We just release these new questions.

We will provide 20 questions for this H31-122-ENU HCNP BCRN(Carrier IP) online test. You can get 5 points after answer one question correctly. All the questions we provide are the latest exam subjects. They are just part of the full version 375 questions. All your real questions will be randomly chosen from our dumps. If you want to purchase the full version 375 questions please go to our Shop page or click “I want to buy full version“. Just leave your message here or contact us via email hcdatest@outlook.com if you have any questions.

Start to test:

As shown, RTA, RTB and RTC run BGP routing protocol, analysis configuration.

RTA:

bgp 100

peer 13.13.13.2 as-number 200

ipv4-family unicast

network 12.12.12.0 255.255.255.252

undo synchronization

peer 13.13.13.2 enable

RTB:

bgp 100

peer 23.23.23.2 as-number 200

ipv4-family unicast

network 12.12.12.0 255.255.255.252

undo synchronization

peer 23.23.23.2 enable

RTC:

bgp 200

peer 13.13.13.1 as-number 100

peer 23.23.23.1 as-number 100

ipv4-family unicast

undo synchronization

peer 13.13.13.1 enable

peer 23.23.23.1 enable

Debugging found that the neighbor relationship can be established normally, and the RTC’s BGP routing table correctly received the RTA and RTB advertised routes 12.12.12.0/30.

For RTC, Which statement is correct?

A. By RTA access 12.12.12.0/30, because the bandwidth between RTA and RTC is greater than the bandwidth between RTB and RTC.

B. By RTA access 12.12.12.0/30, because RTA’s router ID is smaller than the RTB’s.

C. by RTB access 12.12.12.0/30, because the RTB router ID is greater than the RTA’s.

D. In this case, RTC performs load balancing, simultaneous access 12.12.12.0/30 by RTA and RTB.

Which parts at most are composed by BGP protocol’s UPDATE packet? (Multiple choice)

A. sending router identifies

B. unreachable route

C. Path Attributes

D. Network Layer Reachability Information

Class A addresses the mask is 255.255.128.0, state how many bits that it uses to subnetting?

A. 17

B. 9

C. 1

D. 15

In the OSPF routing domain, when realizing inter-area routes aggregated, need to go through detailed router entries between the areas. Which of the following mode can achieve?

A. [RTB-ospf-1-area-0.0.0.1] abr-summary 20.1.1.0 255.255.255.0

B. [RTB-ospf-1-area-0.0.0.1] abr-summary 20.1.1.0 255.255.255.0 detail

C. [RTB-ospf-1-area-0.0.0.1] abr-summary 20.1.1.0 255.255.255.0 broadcast

D. [RTB-ospf-1-area-0.0.0.1] abr-summary 20.1.1.0 255.255.255.0 advertise

RTA is running OSPF routing protocol, the following information is displayed on the RTA, and then which of the following statement is correct? (Multiple choice)

[RTA] dis ospf Isdb

OSPF Process 1 with Router ID 1.1.1.1

Link State Database

Area: 0.0.0.1

Type LinkState ID AdvRouter Age Len Sequence Metric

Router 2.2.2.2 2.2.2.2 1518 36 8000000c 0

Router 1.1.1.1 1.1.1.1 1286 36 8000001b 0

Network 10.1.1.1 1.1.1.1 1595 32 80000007 0

SNet 192.2.2.0 2.2.2.2 1403 28 80000008 3124

SNet 10.2.2.0 2.2.2.2 1403 28 80000007 1563

NSSA 10.1.1.0 1.1.1.1 1284 36 80000001 1

NSSA 1.1.1.1 1.1.1.1 1029 36 80000002 1

A. RTA is a regional internal router in Stub area

B. RTA is a NSSA regional internal routers

C. RTA is an ABR

D. RTA is an ASBR

For the BGP MED (Multi-Exit Discriminators) properties, which of the following description is correct? (Multiple choice)

A. MED attribute is the external metric of a route

B. MED attributes are passed between autonomous systems

C. autonomous system uses the MED attribute to do the route autonomous system’s routing selection

D. When autonomous system running BGP get the same destination but with different next hops multiple routes, under the situation that the other conditions are the same, the route with the larger MED as the external routes of the autonomous system

In OSPF routing protocol, the role of the virtual link is to connect any two non-backbone areas, implementing routing information’s interchange.

A. True

B. False

Which of the following options belong to a multicast applications? (Multiple choice)

A. IPTV TV playback

B. Live Online

C. Video Conferencing

D. On Demand

In the ISIS protocol pseudo node LSP, what is the content of the description?

A. DIS topology information

B. general router’s topology information

C. pseudo node connected system-ID

D. All of the above

The following about OSPF establish the adjacency on-demand circuit, how to detect adjacency status has been expired?

A. Every hellointerval time to send hello packets; can not receive the opposite end’s hello packet; then it is considered the opposite end is invalid

B. send hell packet every poll time; can not receive the opposite end’s hello packet; then it is considered the opposite end is invalid

C. send hello packets every 120s; can not receive the opposite end’s hello packet; then it is considered the opposite end is invalid

D. do not send detect hello packets, but when send LSA information, can not receive a confirmation message in the retransmission cycle, then it determines the adjacency is invalid.

A subnet segment address is 5.32.0.0 and the mask code is 255.224.0.0 network, which is the the maximum host address it allowed?

A. 5.32.254.254

B. 5.32.255.254

C. 5.63.255.254

D. 5.63.255.255

What kinds of ways does the interface identifier generate in an IPv6 address? (Multiple choice)

A. Adoption of EUI-64 specification

B. generated by ipv4 address translation

C. The device is randomly generated

D. Manual configuration

Which of the following parameters is to prevent a routing loop within CLUSTER?

A. ROUTER_ID

B. CLUSTER_ID

C. ORIGINATOR_ID

D. CLUSTER_LIST

When viewing the RTA’s LSTA, there is such entry information:

Type: Router

Ls id: 10.0.2.2

Ads rtr: 10.0.2.2

Ls age: 126

Len: 36

Options: ABR E

seq#: 80000004

chksum: 0xb434

Link count: 1

* Link ID: 10.0.24.4

Data: 10.0.24.2

Link Type: ?

Then what does the “?” in Link Typ represent? (Multiple Choice)

A. Point-to-Point

B. TransNet

C. StubNet

D. Virtual

The following description about the routing attributes of BGP, which are wrong? (Multiple choice)

A. After receiving the transition attribute, the router should pass the attribute to other peers. The attributes include the MED of the route etc.

B. Compliance attribute refers to each route must have the property, such as the next hop; and optional attributes can be omitted

C. Local preference attributes are used to route routes that reach a destination within an autonomous system

D. The community attribute identifies a group of routers with the same characteristics, independent of the IP subnet, but matters with the autonomous system

Which of the following update mechanisms does the OSPF routing protocol use to ensure routing information calculation’s reliability and stability (multiple choice)

A. Periodic updates

B. Trigger updates

C. Incremental update

D. Update on demand

Which of the followings do belong to the anti-ring mechanism of BGP? (Multiple choice)

A. The BGP route prevents the loop between ASs by carrying the AS_PATH attribute.

B. AS_PATH attribute is used to select the road, rather than for the anti-ring.

C. Routes learned from IBGP neighbors, BGP speaker will not pass it to IBGP peers, so there is no loop in AS.

D. When IGP and BGP are not synchronized, the BGP speaker does not pass routes learned from IBGP neighbors to EBGP neighbors, so there is no loop between ASs.

BGP generally are attributed to different ISP, for the customer network which AS number is the best choice?

A. a public AS number

B. a private AS number

C. Separately ISP assigns different private AS numbers

D. There is no difference between the public AS number and the private AS number

Which of the following descriptions about NAT options are correct? (Multiple choice)

A. NAT is the abbreviation of English Network Address Translation, also known as address translation

B. NAT is used to implement the conversion between the private address and the public network address

C. When the internal network host access to the external network, NAT must not being needed

D. Address translation proposal provides an effective way to solve the problem of IP address tension

In OSPPv3, even if the two routers connected interfaces IPv6 address is not on the same network segment, but it can still establish adjacencies.

A. TRUE

B. FALSE

Question 1 of 20

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