ccna questions and answers pdf 2020

ccna questions and answers pdf 2020

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1) Hide in the taskbar (2) What kind of configuration measures should be taken for various common operating systems to correctly deal with various intrusions. 4) Step 4 : Hide the IP address With the static command allows us to a specific internal IP to set up a permanent global address IP address. This will be designated as an entry interface to create a lower security level, so that they can enter a higher level of security refers to a given interface. The RSA algorithm can be used for both data encryption and digital signature. The theoretical basis of RSA is that it is relatively simple to find two large prime numbers, but the process of unraveling their multiplication and integration is extremely difficult. In the RSA algorithm, it contains two keys, If it is run under the permission of Win d o w s N T , flcss.exe will install itself on the Windows NT machine like a service program . It will be displayed in the standard Windows NT service list as flc and is set to run this service automatically every time it starts. Under Windows 9X , it runs like a hidden program and is not visible in the task list. While cookies bring convenience to users, they also bring certain security risks. There is no need to worry about these security hazards on very formal large websites, but they should be guarded carefully on the Internet. Put the following code in the < head> mark of the HTML code of the webpage, and the "Add to Favorites" dialog box will appear when you press the right mouse button on the webpage . Application gateway The first 2 chapters operating system security configuration C: So far, the defense against DDoS attacks is still relatively difficult. First of all, this attack is characterized by the use of 2. The working process of a password cracker 2) Reasons for using digital certificates ④ For the FlashFXP client: execute "Options" → "Preferences" → "Proxy / Firewall / Identification " command to select passive mode; or execute "Site Management" → "Corresponding Site" → "Options" command, select to use passive mode Active mode; or execute the "Quick Connect" → "Switch" command to select the passive mode. Network security threats and the development trend of corresponding countermeasures (3) The electronic document received by the recipient has not been tampered with during transmission, maintaining the integrity of the data, because any changes to the electronic signature after signing can be discovered. Nov (2) Checksum: One of the simplest and most feasible methods of integrity control is to use the checksum to calculate the checksum value of the file and compare it with the value calculated last time. If they are equal,ccna questions and answers pdf 2020, the file has not changed; if they are not , the file may have been changed by undetected behavior. The checksum method can check errors, but cannot protect data. The transmission protocols used by the e-mail system include SMTP and POP3 . Among them, SMTP is responsible for the sending of mail. (4) Some viruses cannot be completely removed under Windows 98 ( such as CIH virus ) . At this time, we should use a clean system boot disk prepared in advance to boot the system, and then run the relevant antivirus software under DOS to remove it. 5. Identity Verification (3) Another simple method is to set the attribute of the Cookie folder to read-only. Because the data packets from the upper layer to the micro port layer are placed in a pre-allocated buffer. With the corresponding function provided by NDIS , you can get the first address and data length of the buffer. Therefore, you can add in the driver = 8 17 mod 33 The first 9 chapters security of e-commerce 8.1 Security Overview of Web Services The first 5 chapters firewall technology and configuration Transmission encryption in Web services is generally implemented at the application layer. WWW server when sending confidential data, first to the recipient in accordance with IP Select key address or other identification, data encryption computation; browser receiving the encrypted data after The IP packet source address or other identification information to The encrypted data is decrypted to obtain the required data. In the current popular WWW servers and browsers, such as Microsoft’s IIS server and IE browser, both can perform encryption and decryption operations on information, and there are also interfaces that allow users to reload encryption and decryption algorithms to construct their own The encryption and decryption module. In addition, transmission encryption and decryption can also be implemented at the IP layer to encrypt and decrypt all incoming and outgoing information to ensure data security at the network layer.

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Latest Cisco CCNA 200-301 Dumps

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