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

1. Due to the network upgrade of the new USG_A and USG_B software versions, how to upgrade without affecting services:
USG_A is Active device, USG B is Standby device
① Log in to USG_B through Telnet or SSH. The operations are as follows:
[USG-B] hrp enable
② Log in to USG_A through Telnet or SSH. The operations are as follows:
HRP_M [USG_A] undo hrp enable
③ Execute the undo hrp enable command on USG_B, then upgrade the software version of USG_B, and restart the USG_B device.
④ Upgrade the software version of USG_A and restart the USG_A device.
⑤ Test whether the USG_B service is normal.

A) ③②④①⑤
B) ②③①④⑤
C) ③②①⑤④
D) ①⑤③②④

2. The main differences between the RADIUS and HWTACACS protocols include:

A) RADIUS authentication and authorization are separated, and HWTACACS authentication and authorization are processed together.
B) HWTACACS encrypts the entire body of the message, and RADIUS only encrypts the password field in the authentication message.
C) RADIUS uses TCP protocol, network transmission is more reliable, HWTACACS uses UDP protocol.
D) HWTACACS supports authorization of configuration commands, RADIUS does not support authorization of configuration commands.

3. Which statement about MTU and PMTU is correct?

A) The device will check the MTU on the inbound interface, and if the packet size exceeds the MTU value, it will be discarded.
B) In an IP network, interfaces with different MTU values may be passed from the source address to the destination address, and the largest MTU value is the PMTU of the path.
C) MTU (Maximum Transfer Unit) refers to the size of the largest data packet that can be transmitted in the network, in bytes.
D) PMTU detection is to obtain the PMTU value of the specified destination IPv4 address through detection, and then use the MTU value to send packets.

4. The IPsec status information of a network is as follows, [USG A] display ike sa
current ike sa number: 2
-------------------------------------------------- -------------------------------------
conn-id peer flag phase vpn
-------------------------------------------------- --------------------------------------
40006 <unnamed> NONE v1:2 public
40004 1.1.1.2 RD|ST v1:2 public
2012-08-08 15:05:15 USG %%01IKE/4/WARNING (I): phase2: proposal or pfs dh-group up mismatch, please check ipsec proposal and pfs dh-group configuration.
*0.1921499990 USG IKE/7/DEBUG: got NOTIFY of type NO_PROPOSAL_CHOSEN
Which of the following options is a possible cause of failure?

A) IKE pre-shared key mismatch
B) Inconsistent PFS configuration
C) Incorrect ACL configuration
D) IPsec proposal mismatch

5. The difference between IKEv1 and IKEv2, which of the following descriptions are correct?

A) IKEv1 supports DPD by default. As long as DPD is configured on one end, the other end can respond to DPD packets. IKEv2 cannot.
B) IKEv2 can use AAA server to assign private IP address, IKEv1 cannot provide this function.
C) The integrity algorithm of the IKE SA is only supported by IKEv1.
D) IKE SA and IPsec SA are established, using 4 messages for IKEv2 and 9 messages for IKEV1 main mode.

Solutions: