H3C Large-Scale Routing Network Technologies V2.0 (GB0-381-ENU) Free Practice Test

Question 1

Below is the output of displaripng 1 route on a router, where those routes were learned from FE80::303 ?
Route Flags: A - Aging, S - Suppressed, G - Garbage-collect
-------------------------------------------------- --------------
Peer FE80::101 on Ethernet0/0
Dest 1::/64,
via FE80::101, cost 1, tag 0, A, 0 Sec
Peer FE80::303 on Ethernet0/0
Dest 3::/64,
via FE80::303, cost 1, tag 0, A, 29 Sec
Dest 3003::/64,
via FE80::303, cost 3, tag 0, A, 29 Sec
Peer FE80::404 on Ethernet0/0
Dest 4::/64,
via FE80::404, cost 1, tag 0, A, 13 Sec

A. 3::/64

B. 3003::/64

C. 4::/64

D. 1::/64

Correct Answer: A,B

Question 2

Regarding the comparison between OSPF protocol and RIPv2 protocol, the following statement is correct

A. Both protocols are common IGP routing protocols, and both support automatic aggregation by class

B. OSPF protocol supports VLSM, while RIPv2 protocol does not support

C. RIPv2 uses hop count as routing metric, and OSPF protocol cost (cost) as routing metric

D. Both protocols support routing information triggered updates

Correct Answer: C,D

Question 3

______ uses the Shortest Path First (SPF) algorithm.

A. RIP

B. S-IS

C. OSPF

D. BGP

Correct Answer: B,C

Question 4

LSAs of type ______ may be injected into an OSPF NSSA area.

A. Tpe4

B. Tpe5

C. Tpe3

D. Tpe1

E. Tpe2

F. Tpe7

Correct Answer: C,D,E,F

Question 5

Which of the following statements are true about NSAP addresses?

A. The area address and Stem ID are fixed length, NSEL is variable length

B. NSAP address includes three parts: area address, Stem ID and NSEL

C. Stem ID is used to identify IS in the area. In the integrated IS-IS, it is recommended to convert from the router ID of the system or the MAC address of the interface.

D. NSAP is equivalent to IP address and protocol number in IP network. The same NSAP of the two systems will cause communication exceptions

Correct Answer: B,C,D

Question 6

Which of the following LSAs are propagated within an OSPFv3 area?

A. AS-external LSA

B. Network

C. Inter-Area-Prefix

D. Router

E. Intra-Area-Prefix

F. Link

Correct Answer: B,D,E

Question 7

There are two detailed routes 10.10.1.0/24 and 10.10.2.0/24 in the BGP routing table. The user requests to advertise 10.10.1.0/24 and the aggregated route 10.10.0.0/16, but not 10.10.2.0/24. How to achieve ?

A. acl number 2000 rule permit source 10.10.2.0 0.0.0.255 bgp 100 aggregate 10.10.0.0 255.255.0.0 origin-polictest route-polictest dennode 10 if-match acl 2000 route-polictest permit node 20

B. acl number 2000 rule permit source 10.10.2.0 0.0.0.255 bgp 100 aggregate 10.10.0.0 255.255.0.0 suppress-polictest route-polictest dennode 10 if-match acl 2000 route-polictest permit node 20

C. acl number 2000 rule permit source 10.10.2.0 0.0.0.255 bgp 100 aggregate 10.10.0.0 255.255.0.0 origin-polictest route-polictest permit node 10 if-match acl 2000

D. acl number 2000 rule permit source 10.10.2.0 0.0.0.255 bgp 100 aggregate 10.10.0.0 255.255.0.0 suppress-polictest route-polictest permit node 10 if-match acl 2000

Correct Answer: D

Question 8

As shown in the figure, RTA and RTB establish an IS-IS adjacency on a P2P type link. After the RTB sends LSP_N to RTA, it sends LSP_N to RTA after a period of timing, and then RTA sends ______ to RTB. It can be known from the above that ______ is lost.

A. CSNP , the second LSP_N

B. CSNP , the first LSP_N

C. PSNP , the first LSP_N

D. PSNP , the second LSP_N

Correct Answer: C

Question 9

The picture shows the sending of Hello packets between RTA, RTB and RTC.

According to the above information, it can be judged that ______ between RTA and RTC, and ______ between RTC and RTB.

A. The adjacency has been established, the adjacency has been established

B. Adjacency established, no adjacency established

C. Adjacency not established, adjacency established

D. no adjacency established, no adjacency established

Correct Answer: B

Question 10

E As shown in the figure, RTB and RTC each learn EBGP route N from RTD, RTB is missing LOCAL_PREF is set to 200, IBGP neighbor relationship is established between RTA, RTB and RTC through loopback, in the RTA routing table, only N, RTB and RTC are The loopback and RTA itself are directly routed. If RTB goes down due to power failure, can route N be switched to RTC immediately on RTA?

A. No, because the neighbor relationship between RTA and RTB will not be interrupted until the holdtime expires, and it will take about 3 minutes to switch over.

B. Yes, because the next hop of the route N pointing to RTB is unreachable, RTA immediately switches to RTC

C. No, because RTA and RTB establish IBGP neighbor relationship through loopback address. If the interconnection interface is improved, it can be switched up

D. Yes, because the neighbor relationship between RTA and RTB is broken, RTA immediately switches to RTC

Correct Answer: B

Question 11

Two routers cannot establish OSPF neighbor relationship. The following possible reasons are ________.

A. The Hello time interval of both parties is inconsistent

B. The network type of both interfaces is P2P, and the DR election priority has been modified to 0

C. By configuring silent-interface, the adjacent interfaces of both sides do not send protocol packets

D. The authentication passwords configured by both parties are inconsistent

Correct Answer: A,C,D

Question 12

The two MSR routers RTA and RTB are interconnected through the 172.16.0.0/24 network segment. Now execute the following commands on the two routers:
RTA]ospf 1
RTA-ospf-1]area 0
RTA-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.0.255
RTB]ospf 100 RTB-ospf-100]area 1
rtb-ospf-100-area-0.0.0.1]network 172.16.0.0 0.0.0.255
Judging from the above configuration ______.

A. RTA and RTB cannot establish OSPF neighbor relationship. If the OSPF process ID is configured to be the same, OSPF neighbor relationship can be established.

B. RTA and RTB cannot establish an OSPF neighbor relationship. The OSPF process ID and area ID must be configured to be the same to establish an OSPF neighbor relationship.

C. RTA and RTB cannot establish OSPF neighbor relationship. If the area ID is configured to be the same, OSPF neighbor relationship can be established.

D. RTA and RTB can establish OSPF neighbor relationship

Correct Answer: C

Question 13

For the IS-IS protocol message exchange process, the correct one of the following descriptions is ________.

A. In an IP network, IS-IS bearers interact in IP packets

B. The NSAP address is composed of two parts, IDP and DSP, with a fixed length of 160 bits.

C. IS-IS protocol packets use the NSAP address in CLNP

D. NSAP is a variable-length address, the longest is 160 bits, and the shortest is 64 bits

Correct Answer: B,C

Question 14

In the topology shown in the figure, the following configurations are performed on RTA, RTB, RTC and RTD respectively:
RTA-LoopBack0] ip address 1.1.1.1 255.255.255.255
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTA-ospf-1]import-route direct
RTB-LoopBack0] ip address 2.2.2.2 255.255.255.255
RTB]ospf 1
RTB-ospf-1]area 1
rtb-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
rtb-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC-LoopBack0] ip address 3.3.3.3 255.255.255.255
rtc]ospf 1
RTC-ospf-1]area 0
RTC-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
rtc-ospf-1-area-0.0.0.0]area 2
RTC-ospf-1-area-0.0.0.2]nssa no-summarRTC-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
rtc-ospf-1-area-0.0.0.2]network 3.3.3.3 0.0.0.0
RTD-LoopBack0] ip address 4.4.4.4 255.255.255.255
RTD]ospf 1
RTD-ospf-1]area 2
RTD-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
rtd-ospf-1-area-0.0.0.2]nssa
RTD-ospf-1]import-route direct
Which of the following routes _______ cannot exist in the RTD's routing table.

A. 1.1.1.1/32

B. 3.3.3.3/32

C. 2.2.2.2/32

D. 0.0.0.0/0

Correct Answer: A,C

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H3C Large-Scale Routing Network Technologies V2.0 (GB0-381-ENU) Free Practice Test