Latest H12-821_V1.0-ENU Study Guides 2023 – With Test Engine PDF [Q147-Q161]

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Latest H12-821_V1.0-ENU Study Guides 2023 – With Test Engine PDF

Get New H12-821_V1.0-ENU Practice Test Questions Answers

NO.147 Which of the following regarding the stacked MAD detection is false?

When stacking systems act as agents for each other to perform MAD detection, the two stacking systems can use the same Domain ID

MAD detection methods are divided into direct connection detection and proxy detection

MAD proxy detection requires all stack members connected to the proxy device, and added the linked link to a Eth-Tunk

MAD direct connection detection can pass through the intermediate device, also can adopt the full-mesh method

NO.148 The command to configure VRRP preemption delay is:

vrrp vrid 1 preempt-mode timer delay 20

vrrp twist 1 hour delay 20

vrrp vrid 1 preempt-timer 20

vrrp vrid 1 preempt-delay 20

NO.149 Which of the following description of VRRP is wrong?

When using the protocol, you need to configure the virtual router and virtual IP address on the router, and directly use the real MAC of the main router, so that a virtual router is added to the network

VRRP is a redundant backup protocol, designed for LANs with multicast or broadcast capabilities (such as Ethernet) to ensure that when the next hop router device of a host in the LAN fails, another router can be used in a timely manner Instead, so as to maintain the continuity and reliability of network communication

A virtual router is composed of a main router and several backup routers. The main router realizes the real forwarding function. When the main router fails, a backup router will become the new main router and take over its work.

The host on the network communicates with the virtual router, and there is no need to know all the information of the physical router on this network

NO.150 Four routers are running IS-IS and have established adjacency relationships. The area numbers and router levels are marked as shown in the figure. If route penetration is configured on the R3 device, what is the cost value from R4 to 0.0.2.2/32?

NO.151 In VRRP, when the device status changes to Master, it will immediately send gratuitous ARP to refresh the MAC table entries of the downstream device, thereby directing the user’s traffic to this device.

TRUE

FALSE

NO.152 A network engineer outputs the following information when troubleshooting the OSPF protocol. Based on this to determine which cause the adjacency relationship cannot be established normally?

The area code does not match

Process numbers are discordance

The IP address code of the interface is discordance

Router ID conflict

NO.153 Which of the following description of BGP characteristics is wrong?

BGP is an external routing protocol used to transfer routing information between ASs

BGP is a link state protocol

BGP has rich routing filtering and routing strategies

BGP supports CIDR

NO.154 Which of the following description about VRRP is incorrect?

VRRP determines the status of each router in the virtual router based on priority

If the Master already exists, Backup will also preempt

When two routers with the same priority compete for the Master at the same time, compare the size of the interface IP address, and the one with the larger interface address is elected as the Master

If the Backup router works in non-preemptive mode, as long as the Master router does not fail, the Backup router will not become the Master router even it is subsequently configured with a higher priority.

NO.155 After the IGMP proxy device receives a report message from a multicast group, if it does not find the corresponding multicast group, the IGMP proxy device will send a report message for the multicast group to the access device, and send it to the access device. Add the multicast group to the forwarding table.

TRUE

FALSE

NO.156 Four routers are running IS-S and the adjacency relation has been established, and the level of area number and router are marked as shown, which of the following statements are true?

Both R2 and R3 will have the Level-1’s LSP of ATT set

R1 does not have the LSP generated by R4, so R1 can only communicate with R4 through the default route

Both R2 and R3 will have the Level-1’s LSP of ATT set

R2 and R3 learn default routes from each other, and there is a routing loop in this network

NO.157 When the BGP versions supported by two BGP neighbors are inconsistent, the neighbors will negotiate to adopt the highest BGP version that both ends can support.

TRUE

FALSE

NO.158 In the RSTP protocol, when the network topology changes, the mechanism for responding to changes in the topology is?

The MAC table remains unchanged

Delete the entire MAC address table

Modify the lifetime of the MAC address table

Partial deletion of the MAC address table

NO.159 Option 82 in the DHCP message is called the relay agent information option, from which the administrator can obtain a lot of information about the client. Option 82 can contain at most () Sub-Options.

255

NO.160 Regarding the OSPF route aggregation command, which of the descriptions is correct? (Multiple choice)

The abr-summary command is a command in OSPF area view

advertise is the default parameter of the abr-summary command, that is, if not-advertise is specified in the abr-sumary command, the default is advertise

not-advertise is the default parameter of the abr-summary command, that is, if advertise is not specified in the abr-summary command, the default is not -advertis

The abr-summary command is a command in the OSPF view

NO.161 Which of the following OSPF messages carry master-slave relationship information?

LSA Update message

LSA Request message

D.D message

Hello message

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