H12-721 Questions And Answers


Exam Name: HCIP-Security-CISN(Huawei Certified ICT Professional - Constructing Infrastructure of Security Network)

Updated: 2022-06-25

Q & A: 342

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Question No : 1

Figure shows the data flow direction of power bypass interface in the Bypass working mode and non-bypass working mode, on the working process of power bypass interface.

Which of the following statements is correct? (Choose 2 Answers)
A. When the interface operates in the non-bypass state, traffic flows from the GE0 interface to the USG through Router_A and flows from the GE1 interface to Router_B after the USG process.
B. When the interface works in the Bypass state, the traffic flows from the GE0 interface to the USG through Router_A. The USG flows from the GE1 interface to Router_B directly without any processing.
C. When the firewall requires security priority, the uplink and downlink services are not interrupted when the interface operates in the Bypass state. So that the device can be maintained in the Bypass state.
D. Power Bypass interface can only work in the two-layer model, with circuit bypass function.
Answer: AB

Question No : 2

When the user's SSL VPN has been authenticated successfully, the user can not access the Web-link resource, view the information through the Web server as follows:

According to the above information, which of the following statement is correct?
A. Intranet server does not open Web service
B. Virtual gateway policy configuration error
C. The connection between the virtual gateway and the intranet server is not normal
D. The routing of virtual gateway and intranet server is unreachable
Answer: A

Question No : 3

In the following virtual firewall networking, the USG Unified Security Gateway provides rental services, VPN instance wfw1 is rented to enterprise A, and the networking diagram is as follows.
Enterprise A extranet user's PC C needs to access the Enterprise A extranet DMZ zone server B through NAT, if want to achieve the requirement, which of the following key configuration must do? (Select 3 Answers)

A. [USG] ip vpn-instance vfw1 vpn-id 1
B. [USG] ip vpn-instance vfw1
[USG-vpn-vfw1] route-distinguisher 100 £º 1
[USG-vpn-vfw1] quit
C. [USG] nat server zone vpn-instance vfw1 untrust global inside vpn-instance vfw1
D. [USG] nat address-group 1 vpn-instance vfw1
Answer: ABC

Question No : 4

DHCP snooping function needs to maintain the binding table, what contents of the binding table are included? (Select 3 Answers)
B. Vlan
C. Interface
D. DHCP Server µÄ IP
Answer: ABC

Question No : 5

In dual hot standby, the backup channel must be the main interface on the interface board, which type does not support?
A. Ethernet
B. GigabitEthernet
C. E1
D. vlan-if
Answer: C

Question No : 6

According to the daul hot standby network diagram, the following are the descriptions about the daul hot standby preemption function, which are correct? (Select 3 Answers)

A. VRRP backup group itself has preemption function. In the figure, when USG_A fails and is restored, USG_A will use the preemption function to back into master state.
B. The preemption function of the VGMP management group is similar to the VRRP backup group. When the faulty backup group in the management group recovers, the priority of the management group is restored.
C. By default, the preemption delay is 0 and never preempts.
D. When the VRRP backup group is added to the VGMP management group, the original preemption function on the backup group will be invalid. The preemption takes action or not must be determined by the VGMP management group.
Answer: ABD

Question No : 7

IP-link sends a probe packet to the specified IP address. By default, after the three failures detection, the link to the IP address is considered to be faulty.
Answer: A

Question No : 8

The testing center is responsible for the detection of traffic, sent the inspection results to the management center, issued drainage strategy by the management center to the cleaning center for drainage cleaning.
Answer: A

Question No : 9

In the solution of Huawei abnormal flow cleaning, in the scene of bypass deployment, which drainage program can be used? (Choose 3 Answers)
A. Dynamic routing drainage
B. Static policy routing drainage
C. Static routing drainage
Answer: ABC

Question No : 10

By configuring the Bypass interface can avoid the network interruption caused by device failure and improve the reliability of the network. Power Bypass function can use any GE interface to achieve the Bypass function by configuring the Bypass relative parameters.
Answer: B

Question No : 11

One network is shown as below:

PC establish l2tp vpn through the vpn client and USG (LNS), what are possible reasons of dial-up failure? (Select 3 Answers)
A. The tunnel name of the LNS is not consistent with the client's.
B. L2TP tunnel authentication failed.
C. PPP authentication fails, the PPP authentication mode set on the client PC and LNS is not consistent.
D. The client PC can not obtain the IP address assigned to it from the LNS.
Answer: BCD

Question No : 12

SSL works in the application layer and encrypts for specific applications, but which layer the IPsec works in and provides the transparent encryption protection for the layer and above?
A. Data link layer
B. Network layer
C. Transport layer
D. Presentation layer
Answer: B

Question No : 13

The PCA in the Trust zone is and can not access the Internet server in the Untrust zone.
Check that the configuration between the Trust and Untrust domains is as follows: What is the most likely cause of the failure?

A. The security policy application direction is incorrectly configured and should be Outbound.
B. Because of executing the firewall default packet-filter is deny first, the next policies are not exectured.
C. policy source configuration error, it needs to be modified into policy source
D. policy destination any configuration error, it must develop a clear destination IP address.
Answer: A

Question No : 14

The main method of Defense cache server DNS Request Flood is to use the DNS source authentication.
Answer: A

Question No : 15

IPsec VPN at both ends of the firewall can not establish successfully, what are the possible reasons? (Choose 3 Answers)
A. The device does not have a route to the peer intranet.
B. The ACL configuration which quoted by the security policy configured on the both ends of the gateway erros.
C. The IPsec security proposal configured on the two ends of the gateway is not consistent.
D. DPD is not configured at both ends.
Answer: ABC
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