Achieve The Utmost Performance In GB0-381-ENU Exam Pass Guaranteed [Q251-Q266]

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QUESTION 251
The two routers cannot establish OSPF neighbors. The following possible reasons are ________.

The authentication passwords configured by both parties are inconsistent

The Hello time interval of both parties is inconsistent

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

Configure silent-interface so that the adjacent interfaces of both parties do not send protocol packets

QUESTION 252
In the IS-IS network as shown in the figure, after the routing of each router is stable, the IS-IS Level-1 routing in the IS-IS LSDB of RTE has ______.

10.4.5.0/30

10.3.4.0/30

10.1.4.0/30

10.1.5.0/30

QUESTION 253
As shown in the figure, RTA configures the address of each interface and enables dynamic NAT-PT. The configuration is as follows: Then, the IPv6 destination address of the DNS request sent by the PC in the figure is ______, and the IPv4 destination address of the DNS response returned by the DNS server is _ _____.

1::1 1.1.0.1

1::2 1.1.0.2

1::1.1.1.1 1.1.0.1

1::1.1.1.2 1.1.0.2

QUESTION 254
If fast forwarding is enabled on the router, when the last packet of the data flow arrives on the interface, which of the following actions will be performed?

Find the fast forwarding table and forward it

Find the FIB table and forward it

First find the fast forwarding table, then find the FIB table forwarding, and generate the fast forwarding table entry at the same time

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

QUESTION 255
The networking is shown in the figure. AS 101, AS 102, and AS 103 are the sub-ASs of the federated AS 100. RTA establishes eBGP neighbor relationships with RTB, RTC, and RTD respectively. How should the BGP protocol of RTA be configured?

RTA] bgp 100 confederation id 101 peerRTB as-number 102 peerRTC as-number 103 peerRTD as-number 200

RTA] bgp 100 confederation id 101 confederation peer-as 102 103 peerRTB as-number 102 peerRTC as-number 103 peerRTD as-number 200

RTA] bgp 101 confederation id 100 peerRTB as-number 102 peerRTC as-number 103 peerRTD as-number 200

RTA] bgp 101 confederation id 100 confederation peer-as 102 103 peerRTB as-number 102 peerRTC as-number 103 peerRTD as-number 200

QUESTION 256
h network as shown in the figure:
The main configuration of the router is as follows:
RouterA]
bgp 100
router-id 1.1.1.1
peer 1.1.1.2 as-number 300
network 4.4.4.4 24
network 5.5.5.5 24
network 6.6.6.6 24
RouterB]
bgp 200
router-id 2.2.2.2
peer 1.1.2.2 as-number 300
network 7.7.7.7 24
network 8.8.8.8 24
network 9.9.9.9 24
RouterC]
bgp 300
router-id 3.3.3.3
peer 1.1.1.1 as-number 100
peer 1.1.2.1 as-number 200
peer 1.1.3.2 as-number 400
RouterD]
bgp 400
router-id 4.4.4.4
peer 1.1.3.1 as-number 300
peer 1.1.3.1 route-policrt1 import
ip as-path 1 permit _200_
route-policrt1 dennode 1
if-match as-path 1
route-policrt1 permit node 2
Assuming that the IP addresses of the interfaces on the four routers have been correctly configured, if there is no problem with the link, check the BGP routing table of Router D, and you can see which of the following BGP routes are:

4.4.4.0/24

5.5.5.0/24

6.6.6.0/24

7.7.7.0/24

8.8.8.0/24

9.9.9.0/24

QUESTION 257
Which of the following statements is true about running Integrated IS-IS over an IP network ______.

In an IP network, IS is often referred to as a router

IS-IS runs in the IP network, still uses the CLNS service provided by CLNP, and is at the same network level as the IP protocol

Because of the use of CLNS, IS-IS still needs the ES-IS protocol to forward host data

IS-IS only collects the link state and calculates the route in the IP network, without ES-IS, the communication between the router and the host still relies on ARP, ICMP, DHCP and other protocols

QUESTION 258
Regarding the NSAP address, which of the following descriptions are correct?

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

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

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

Stem ID is used to identify IS in the area. In integrated IS-IS, it is recommended to be converted from the system’s Router ID or interface MAC address

QUESTION 259
In the topology shown in the figure, execute the following command on the RTA router:
RTA-ospf-1] default-route-advertise alwa
RTA] ip route-static 0.0.0.0 0.0.0.0 192.168.0.2
The default route cannot be observed in the routing table of the RTC router, the possible reason is ______

RTA’s default route next hop address 192.168.0.2 is unreachable

RTA’s default route does not enter the OSPF area through the import command

Area1 is configured as an NSSA area

A routing policy is configured on RTB to filter the default route

QUESTION 260
Regarding the Stub area and TotalStub area of the OSPF protocol, the following statement is wrong: ______

After the original stub area is changed to a total stub area, the number of LSAs propagated in the area will definitely decrease

After the original stub area is modified to the total stub area, the number of LSAs in the LSDB of each router in the area will definitely decrease

If there are two ASRs in the TotallStub area, each ABR sends a default route to the routers in the area

ASBRs cannot exist in either the stub area or the total stub area

QUESTION 261
The administrator wants to configure the OSPF route priority value to be 100 on the MSR router. Which of the following commands is correct?

Router]ospf preference 100

Router]preference 100

Router-ospf-1]ospf preference 100

Router-ospf-1]preference 100

QUESTION 262
As shown in the figure, 4 routers are connected to an Ethernet link. The router interface is a broadcast network type, and the DIS election has been carried out and an adjacency relationship has been established.

If the RTA restarts at this time, after the restart is completed, the DIS on this link is ______

RTA

RTB

RTC

RTD

QUESTION 263
Regarding the DR/BDR election principle in the OSPF protocol, the following statement is wrong is ______.

The router with the highest priority value will be elected as the DR

The router with the largest interface IP address will be elected as the DR

The router with the largest Router ID will be elected as the DR

A router with a priority value of 0 must not participate in the election

QUESTION 264
Which of the following statements about filters is __________.

Filter-polic can filter received routes or advertised routes, and can modify BGP attribute values

Route-polic can filter in the process of receiving, publishing and importing routes, and can modify the attribute value of BGP

AS-path list is for AS rather than specific routes for routing control

Among several filters, Route-polic is more functional

QUESTION 265
Execute displaip polic-based-route statistic interface ethernet1/0 on the router, and the output is as follows:
Interface Ethernet1/0 policbased routing statistics information:
polic-based-route: aaa
permit node 5
apploutput-interface serial1/0
Denied: 0, Forwarded: 0
Total denied: 0, forwarded: 0
According to the above output, we know ______.

The router applies a PBR named aaa on the interface Ethernet1/0

The node number is 5, and the matching mode is allowed mode

The specified sending interface of matched packets is ethernet1/0

The number of successful forwarding and forwarding failure of the policy routing is 0

QUESTION 266
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
RTA-ospf-1]default-route-advertise alwa
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-0.0.0.2]network 3.3.3.3 0.0.0.0
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
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 routing table _______.

1.1.1.1/32

2.2.2.2/32

3.3.3.3/32

0.0.0.0/0

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