H3C Large-Scale Routing Network Technologies V2.0 - GB0-381-ENU FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

If fast forwarding is enabled on the router, when the first packet of the data flow arrives on the interface, which of the following actions will be performed?

A. Find the fast forwarding table and forward it B. Find the FIB table and forward it C. First look up the FIB table, then look up the fast forwarding table forwarding, and generate the fast forwarding table entry at the same time D. First find the fast forwarding table, then find the FIB table forwarding, and generate the fast forwarding table entry at the same time

Discussion 0

Correct Answer: D Vote an answer

Question 2

To match BGP routes with originating AS numbers 65000-65099, how should the regular expression be defined?

A. Graphical answer 3 B. Graphical answer 1 C. Graphical answer 2 D. Graphical answer 4

Discussion 0

Correct Answer: C Vote an answer

Question 3

As shown in the picture, PC1 and RTA establish connection through ISATAP tunnel, RTA and RTB establish 6to4 tunnel, all configurations are correct. If PC1 obtains the IPv6 address correctly, then send out the message whose destination address is PC2 (2002:201:2:2009::2). Then the IPv4 destination address encapsulated in the message sent from PC1 is ______; and the IPv4 source address encapsulated in the message sent from RTA is ______.

A. 2.1.0.2 1.2.0.1 B. 192.168.0.1 1.2.0.1 C. 2.1.0.2 192.168.1.2 D. 192.168.0.1 192.168.1.2

Discussion 0

Correct Answer: B Vote an answer

Question 4

Which of the following methods for route filtering are feasible?

A. For OSPF, pass Type 3 LSA B. By filtering routing protocol packets C. By filtering routing information carried in routing protocol packets D. For OSPF, route information calculated by filtering LSDB

Discussion 0

Correct Answer: A,B,C,D Vote an answer

Question 5

Among the following routing protocols, the one belonging to the IGP is ______, and the one that uses the link state algorithm is ______.

A. RIP; RIP B. OSPF; BGP C. BGP; OSPF D. S-IS; IS-IS

Discussion 0

Correct Answer: D Vote an answer

Question 6

As shown in the figure, RTA, RTB, and RTC run OSPF, and the process number is 100; RTA, RTB, and RTD run OSPF process 200. The cost of all interconnected links is set to 10. Set the external route priority of OSPF 100 to 190 on RTA and RTB, and import an external route 172.16.1.0/24 to OSPF100 on RTC. The RTA is set to import the routes of OSPF100 to OSPF200, and the settings on RTB are to import the routes of OSPF200 to OSPF100 again. After the operation is stable, assume that the external route 172.16.1.0/24 imported on the RTC suddenly disappears.
According to the above scenario analysis, the following description is incorrect is ______.

A. The route of 172.16.1.0/24 on RTC still exists, and the next hop points to RTB B. Route for 172.16.1.0/24 on RTD disappeared C. The route of 172.16.1.0/24 on RTD still exists, and the next hop points to RTA D. Route for 172.16.1.0/24 on RTC disappeared

Discussion 0

Correct Answer: B,D Vote an answer

Question 7

Regarding the neighbor table in the OSPF protocol, the following statement is correct ________.

A. The neighbor table records all routers that have established neighbor relationships. B. The router will periodically send Hello packets to the neighbors in the neighbor table to check the status of the neighbors C. If the neighbor's Hello message is not received within a certain time interval, the neighbor will be considered invalid. At the same time, the system starts the aging timer and deletes the neighbor immediately after the aging timer expires. D. The neighbor table of the router is related to area division. Each region maintains its own independent neighbor table

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Correct Answer: A,B Vote an answer

Question 8

The three autonomous systems AS200 shown in the figure are the filtering ASs of AS100 and AS300, among which AS100 advertises the route 10.1.1.0/24 to AS200.
The main device configuration is as follows:
RTC
bgp 100
network 10.1.1.0 255.255.255.0
undo snchronization
peer 200.1.2.2 as-number 200
peer 200.1.2.2 route-policCOM export
peer 200.1.2.2 advertise-communit#
route-policCOM permit node 10
applcommunit100:100
#
RTB
#
bgp 200
undo snchronization
peer 200.1.2.1 as-number 100
peer 200.1.3.2 as-number 300
peer 200.1.2.1 route-policCOM import
#
route-policCOM permit node 10
if-match communit10
applcommunit200:200
#
ip communit-list 10 permit 100:100
Then on the RTC, the correct statement about the routing of 10.1.1.0/24 is ____.

A. Its community attribute is empty because the community attribute will not be passed to the external AS. B. Its community attribute is <100:100> , <200:200> , because the community attribute is actually appended by the intermediate AS. C. Its community attribute is <200:200> because the community attribute was changed by the intermediate AS. D. Its community attribute is <100:100> because the community attribute represents the source of the route.

Discussion 0

Correct Answer: A Vote an answer

Question 9

The networking is as shown in the figure, eBGP runs between AS 100, AS 200, and AS 300, and the ATM link between RTC and RTA, RTC and RTB is connected, and ATM OAM is not enabled. If the ATM link between RTC and RTA is interrupted, RTC How long does it take for routes on AS 100 to switch over to the ATM link between RTC and RTB?

A. Between 60s-90s B. Between 20s-30s C. Between 30s-40s D. Between 120s-180s

Discussion 0

Correct Answer: D Vote an answer

Question 10

Which of the following statements about filters is incorrect is _______.

A. Filter-polic can filter received routes or advertised routes, and can modify BGP attribute values B. AS-path list is for AS rather than specific routes for routing control C. Route-polic can filter in the process of receiving, publishing and importing routes, and can modify the attribute value of BGP D. Among several filters, Route-polic is more functional

Discussion 0

Correct Answer: A Vote an answer

Question 11

In OSPF protocol, ASBR cannot aggregate LSA types:

A. Type7 LSA B. Type4 LSA C. Type3 LSA D. Type5 LSA

Discussion 0

Correct Answer: B,C Vote an answer