Quality H12-821_V1.0-ENU PDF Dumps - H12-821_V1.0-ENU Exam Questions [Q387-Q404] : Exam for engine : http://blog.test4engine.com

Q387. The command to configure the VRRP preemption delay is:

vrrp vrid 1 preempt-mode timer delay 20

vrrp vrid 1 timer delay 20

vrrp vrid 1 preempt-timer 20

vrrp vrid 1 preempt-delay 20

Q388. Which of the following descriptions about the characteristics of routing policies is wrong?

It can save system resources by controlling the size of the routing table of the router

By modifying routing attributes, network data traffic can be reasonably planned to improve network performance

Can modify routing attributes, but cannot change the path through which network traffic passes

It can improve the security of the network by controlling the receiving, publishing and importing of routes

Q389. Regarding BGP MED, which of the following descriptions are correct? (Multiple choice)

The default value of BGP route MED is 0

By default, BGP routing rules can compare the distance between routes from different autonomous systems.

By default, if the MED value is not set in the route attribute, press the process. If the bestroute med-none-as maximum command is configured. Then handle the maximum MED value of 4294967295

In BGP routing rules, the priority of MED is lower than AS-Path, Preferred-Value, Local-Preference, Origin

Q390. Router-LSA can describe different link types. Which of the following does not belong to the Router LSA link type?

Link Type can be used to describe the connection to the untapped network, namely SubNet

Link Type can be used to describe the connection to the transit network, namely TranNet

Link Type can be used to describe a point-to-point connection to another router, ie p2p

Link Type can be used to describe the virtual connection, that is, VlinkE and Link Type can be used to describe the point-to-multipoint connection to another router group, that is, p2mp

Q391. Which of the following circumstances will a router running IS-IS not generate an LSP?

Modify the IP address of the IS-IS interface

Change the sysmane of the router

IS-IS neighbor UP or Downm

Modify the Cost value of the IS-IS interface

Q392. Which of the following tools cannot be directly referenced by the apply clause of a route-policy?

IP-Prefix

tag

community

origin

Q393. Which of the following statements about DHCP Server spoofer attacks are correct? (Multiple choice)

DHCP Server counterfeiter attack sends wrong IP address and network parameters to the terminal by counterfeiting the DHCP server, causing users to be unable to access the Internet

After the DHCP snooping function is enabled on the Huawei switch interface, the interface is in the trusted state by default.

Using the DHCP nooping function on the Huawei layer 2 access switch and enabling the trusted interface can effectively ensure that the client obtains the IP address and network parameters from the legal DHCP Server

A DHCP fake server can affect multiple terminals in different broadcast domains and cannot obtain correct IP addresses and network parameters

Q394. As a network administrator, which of the following protocols can be used for network device configuration? (Multiple choice)

LLDP

SNMP

NETCONF

SSH

Q395. Which of the following descriptions about the basic concepts of VRRP are wrong? (Multiple choice)

A virtual router can only have one IP address, which is configured by the user

VRRP uses VRID to identify virtual routers

The VRP backup group can consist of one Master device and multiple Master devices, and is regarded as the default gateway of hosts in a shared LAN

A VRRP router may belong to one or more virtual routers

Q396. Which of the following description of IBGP neighbors and EBGP neighbors is wrong?

If the two exchange BGP packets peers belong to different autonomous systems, then the two peers are EBGP peer

If the two exchange BGP packets peers belong to the same autonomous system, then the two peers are IBGP peer

IBGP peers must be physically directly connected

Two routers running BGP must have IP connectivity to establish a TCP session

Q397. In the WLAN network, enable the HSB backup group. If the AP has been online on the main AC, and then add AP information offline on the standby AC, the AP status on the standby AC will be displayed as fault. In this case, you need to execute the undo hsb enable command in the HSB backup group view of the standby AC to disable the HSB active/standby backup function, and then execute the hsb enable command to enable the HSB active/standby backup function. At this time, the information on the active AC will be backed up to Standby AC, to achieve consistent backup of active and standby information, and the status of the AP on the AC will be displayed as standby.

True

False

Q398. Which of the following descriptions about configuring the set-overload command in IS-IS is correct?

This command is used to enable IS-IS to automatically calculate the interface cost according to the bandwidth

This command is used to set the overload flag bit of non-pseudo-node LSP

This command allows the device to set the time for the system to maintain the overload flag according to the state of BGP convergence

This command is used to specify that the Hello message sent after the device restarts carries the SA bit

Q399. Please match the name of the BGP recognized community attribute with its function.

Q400. IGMP SSMM APPING does not process IGMPv3 report messages. To ensure that hosts running any version of IGMP on the same network segment can obtain SSM services, it is necessary to run IGMPv3 on the interface of the multicast router connected to the network segment where the member hosts are located.

TRUE

FALSE

Q401. Which of the following options is the minimum total length of the NET address in IS-IS?

8 bytes

16 bytes

2 bytes

20 bytes

Q402. BGP selects the route with the best value of the Origin attribute. The value of the Origin attribute is:
EGP, IGP, ()

Q403. Which of the following statements about the BFD detection mode is correct? (Multiple choice)

Asynchronous mode is a commonly used BFD detection mode

In query mode, once a BFD session is established, the system will no longer periodically send BFD control packets

Asynchronous detection mode does not support echo function

In asynchronous mode, the systems will send BFD control packets at the negotiated cycle. If a system does not receive the BFD control packets from the peer within the detection time, it will declare the status of the BFD session Down.

Q404. The correct description about LSA is?

The combination of LS type, LS sequence number and Advertising Router together identifies an LSA

The combination of LS type, Link State ID and Advertising Router jointly identifies an LSA

The combination of LS type, Link State ID and LS sequence number jointly identifies an LSA

The combination of LS sequence number, Link State ID and Advertising Router jointly identifies an LSA