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Regarding the sequence of the mail transmission process, which of the following is correct?

1. The sender PC sends the mail to the designated SMTP Server.

2. The sender SMTP Server encapsulates the mail information in an SMTP message and sends it to the receiver SMTP Server according to the destination address of the mail

3. The sender SMTP Server encapsulates the mail information in an SMTP message according to the destination address of the mail and sends it to the receiver POP3/MAP Senver

4. The recipient sends an email.

A.

1->2->3

B.

1->2->4,

C.

1->3->2

D.

1->4->3

Which of the following options is not a feature of big data technology?

A.

The data boy is huge

B.

A wide variety of data

C.

Low value density

D.

Slow processing speed

The application behavior control configuration file takes effect immediately after being referenced, without configuration submission.

A.

True

B.

False

Which of the following types of attacks are DDoS attacks? 2I

A.

Single packet attack

B.

Floating child attack

C.

Malformed message attack

D.

Snooping scan attack

The anti-tampering technology of Huawei WAF products is based on the cache module. Suppose that when user A visits website B, website B has page tampering.

Signs: The workflow for the WAF tamper-proof module has the following steps:.

① WAF uses the pages in the cache to return to the client;

②WAF compares the watermark of the server page content with the page content in the cache

③Store the content of the page in the cache after learning

④ When the user accesses the Web page, the WAF obtains the page content of the server

⑤WAF starts the learning mode to learn the page content of the user's visit to the website;

For the ordering of these steps, which of the following options is correct?

A.

③④②⑤①

B.

⑤①②④③

C.

②④①⑤③

D.

⑤③④②①

The processing flow of IPS has the following steps;

1. Reorganize application data

2. Match the signature

3. Message processing

4. Protocol identification

Which of the following is the correct order of the processing flow?

A.

4-1-2-3

B.

1-4-2-3

C.

1-3-2-4

D.

2-4-1-3:

When the Anti DDoS system finds the attack flow, the state will redirect the attack flow to the cleaning device. After the cleaning device is cleaned, it will flow back.

Note to the original link, which of the following options does not belong to the method of re-injection?

A.

Policy routing back annotation,

B.

GRE back note:

C.

MPLS LSP back injection

D.

BGP back-annotation

The administrator has configured file filtering to prohibit internal employees from uploading development files, but internal employees can still upload development files. Which of the following is not allowed Can the reason?

A.

The file filtering configuration file is not referenced in the security policy

B.

File filtering configuration file is incorrect

C.

License is not activated.

D.

The action configuration of the file extension does not match is incorrect

Regarding the Anti-DDoS cloud cleaning solution; which of the following statements is wrong?

A.

Ordinary attacks will usually be cleaned locally first.

B.

If there is a large traffic attack on the network, send it to the cloud cleaning center to share the cleaning pressure.

C.

Since the Cloud Cleaning Alliance will direct larger attack flows to the cloud for cleaning, it will cause network congestion.

D.

The closer to the attacked self-labeled cloud cleaning service, the priority will be called.

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Huawei USG6000 products can scan and process certain file transfer protocols for viruses, but which of the following protocols is not included?

A.

POP3

B.

IMAP

C.

FTP

D.

TFTP