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Huawei HCIE-Security (Huawei Certified Internetwork Expert-Security) Sample Questions:

1. The terminal uses Agent for 802.1x authentication, the IP address of SC and Radius server is 172.18.10.68, and it always prompts network communication failure during authentication;
Viewing the Radius authentication log shows that the Radius authentication is successful and the authorization is ACL3001. The switch configuration is as follows:
dot1x enable
dot1x authentication-method eap
radius-server template lzy
radius-server shared-key simple 123456
radius-server authentication 172.18.10.68 1812
radius-server accounting1 72.1 3.10.63 1813
radius-server authorization 172.18.10.68 shared-key simple 123456
aaa
authentication-scheme default
authentication-scheme auth
authentication-mode radius
accounting-scheme acco
accounting-mode radius
accounting realtime 3
domain default
authentication-scheme auth
accounting-scheme acco
radius-server lzy
interface GigabitEthernet0/0/14
description connect 222
port hybrid pvid vlan 105
port hybrid untagged vlan 105
dot1x enable
acl number 3001
rule 1 permit ip destination 172.18.100.235 0
rule 2 permit ip destination 172.18.100.237 0
rule 10 deny ip
What could be the reason for the failure of network communication?

A) Authorization rule ACL configuration error
B) Billing configuration may be wrong
C) GigabitEthernet0/0/14 port configuration error
D) AAA configuration error

2. A PC receives a fragmented package as shown in the figure below. According to the following package information, which of the following options is correct?

A) There are subsequent IP fragments
B) offset bit is 0
C) The protocol number in the IP header is 2
D) The flag bit in the Layer 3 IP header is 1

3. In the dual-system hot-standby network, the service interface works at Layer 3, the upstream and downstream are connected to the router, the firewall and the upstream and downstream run an OSPF process, which provides the dual-system hot-standby burden sharing network, and the firewall provides the NAT function. The following Incorrect planning deployment advice:

A) Enable HRP to adjust OSPF COST function.
B) Configure a static black hole route (network segment route) in the NAT address pool, import it into OSPF and advertise it.
C) For consistency of uplink and downlink status, the firewall's uplink and downlink interfaces are added to the same Link-Group.
D) Allows the packet filtering policy between the domain where the heartbeat port Eth-Trunk is located and the local domain, so as to allow heartbeat packets to pass.

4. When the Linux host passes through the tracert of the USG firewall for a certain destination IP address, it is found that * is displayed from the hop of the firewall, but the network is confirmed to be no problem. In order to make the firewall itself and the devices behind the firewall truly display the IP address , Which of the following must be configured on the firewall?

A) undo firewall defend tracert enable
B) undo ip ttl-expires enable
C) Packet filtering policy that allows udp packets to be forwarded through the firewall
D) Packet filtering policy that allows icmp packets to be forwarded through the firewall

5. SYN Flood attacks can be prevented through TCP reverse source detection and TCP proxy technology. Comparing the two defense technologies, the correct statement is:

A) The use of TCP proxy mode can be used in scenarios where the round-trip paths are inconsistent.
B) The defense technology of reverse source detection mechanism and TCP proxy mode must enable state detection mechanism.
C) When the SYN packet rate reaches the alarm value alert-rate-number, the device can perform source authentication check on SYN packets.
D) Only when the rate of SYN packets reaches the alarm value alert-rate-number, the device can check the SYN packets by the TCP proxy.

Solutions: