Q249. Which of the following options is correct for the description of a buffer overflow attack?(multiple choice)

Q250. After an engineer completes the source NAT configuration, the internal network still cannot access the external network. The engineer wants to query the detailed information of the address translation by using the command to query the session table, so the engineer directly uses the ( ) command in the user view to query the address translation. information. (fill in the blank)

Q251. Which of the following is not a quintuple range?

Q252. When using passive mode to establish an FTP connection, the control channel uses port 20 and the data channel uses port 21. ( )[Multiple choice]*

Q253. Regarding the description of the GRE VPN tunnel configuration, which of the following options are correct?

Q254. _____ Mode: Two devices, one master and one backup. Under normal circumstances, service traffic is handled by the active device. When the active device fails, the standby device replaces the active device to process service traffic to ensure that services are not interrupted.[fill in the blank]*

Q255. UDPA port scan is when an attacker sends a zero byte lengthUDPmessage to a specific port of the target host, if the port is open, it will return aICMPPort reachable data packets.

Q256. Which of the following is not included in the Business Impact Analysis (BIA)?

Q257. pass throughdisplay ike sa The results you see are as follows. Which of the following statements is false?

Q258. In which of the following scenarios does the firewall generate the Server map table? ( )

Q259. Firewall usagehrp standby config enableAfter the standby device configuration function is enabled by the command, all information that can be backed up can be configured directly on the standby device, and the configuration on the standby device can be synchronized to the active device.

Q260. Which of the following is the difference between NAPT and No-PAT?

Q261. On the surface, threats such as viruses, loopholes, and Trojan horses are the causes of information security incidents, but at the root, information security incidents are also closely related to people and the information system itself.

Q262. Which of the following is the necessary configuration of IPSec VPN? (Multiple choice)

Q263. The results seen through display ike sa are as follows. Which of the following statements is wrong?

Q264. _____ Authentication is to configure user information (including local user’s user name, password and various attributes) on the network access server. The advantage is that it is fast.[fill in the blank]*