The router running the OSPF protocol reaches the FULL state first, and then synchronizes the LSDB. ()

• A. True
• B. False

The network shown in the figure below. Host A is not configured with a gateway, and Host B has the ARP cache of the gateway. Which of the following statements are correct? () (Multiple Choice Question) The answer describes the address wrong

• A. The data packet sent by host A with the destination P address 10.0.12.1 (this address is changed to 11.0.12.1) can be forwarded to host B
• B. Enable proxy ARP on port G0/0/1 of the router,Then host A can communicate with host B
• C. Host A and Host B cannot communicate in both directions
• D. The data packet sent by host B with the destination P address of 10.0.12.1 can be forwarded to host A

Currently, the company has a network administrator, and the AR2200 in the company network can be remotely managed by directly entering the password through Telnet. After the two new network administrators arrived, the company hopes to assign their own user names and passwords to all the administrators, as well as different levels of authority. So how should it be done? ()

• A. When configuring each administrator's account, different permission levels need to be configured
• B. The user authentication mode configured by Telnet must be AAA.
• C. Each administrator uses a different public IP address of the device when running the Telnet command
• D. Configure three user names and their corresponding passwords in the AAA. view

Which of the following statements about the Hybrid port are correct?

• A. Hybrid port only receives data frames with VLAN tag
• B. Hybrid port does not require PVID
• C. Hybrid port can strip off the tags of some vlan frames in the outgoing port direction
• D. When the Hybrid port sends data frames, it must carry the vlan tag

The network administrator configures the RTA on the Huawei router as shown in the figure. If a user needs to be authenticated in the authentication domain "huawei", which of the following descriptions is correct? () (Single-choice question) (RTA) aaa (RTA-aaa) domain huawei (RTA-aaa-doaain huavei) authentication-schene au1 (RTA-aaa-dogairhuavel) authenticIcation-schene au2

• A. Will use "authentication-scheme aul" authentication
• B. Will use "authentication-scheme au2" authentication
• C. "Authentication-scheme au2 authentication will be used. If "au2" is deleted, "aul authentication will be used
• D. "Authentication-scheme aul authentication will be used. If "au1 is deleted."au2 authentication will be used