cisco ccna knjiga pdf

cisco ccna knjiga pdf

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When encrypting information m , first divide m into equal-length data blocks m 1 , m 2 , ..., m i , block length s , where 2 s ≤ n , s 1) Determine whether you are infected with the CIH virus 1) Ping of death Cmd.exe . Then the worm will connect to this port, send a Tftp command, connect back to the host that initiated the attack, and When the CIH virus breaks out, it will overwrite most of the data in the hard disk, so that it can only be restored from the latest backup. However, the virus has another way of destruction: it tries to overwrite the data in the Flash BIOS . Once the Flash BIOS 2) static command The CA root certificate may not be installed successfully. (2) Name : Part 1 . In the case of representing the client, it is a username; in the case of representing the host, it is written as host . (1) Understand the principles of firewall static and dynamic address translation. (3) Automatic search: search for computers with "Glacier" installed in the specified subnet ( for example, if you want to search for IP addresses in (3) Software ( developer ) credentials (Developer ID) : It usually provides the credentials to the Internet to download the software, with the card and for Microsoft Authenticode Technology ( legalized software ) binding software to enable users to download Can obtain the required information when the software. (2) Obtain the password. (4) ISP/ICP should pay attention to the customer managed hosts within the scope of their management not to become puppets, because some of the managed hosts have poor security, and they should establish a good relationship with customers and try to solve possible problems. 3.3.3 Practical considerations of RSA Assume that the Windows operating system is installed in the C:\Windows directory. Transmission direction 4. Problems that digital certificates can solve There are many factors that affect computer network security, such as intentional or unintentional, man-made or non-man-made, etc. The illegal use of network system resources by outside hackers is an important factor affecting computer network security. In summary, the threats to network security mainly include the following aspects. (2) Intrusion detection systems (Intrusion Detection the System , the IDS) . It is a program or hardware executive body that performs intrusion detection functions at the inspection location in the system , which can monitor the current system resources and status and detect possible intrusions. 6.1.2 History of computer viruses static command in a local IP address and a global IP to create a mapping between the permanent address ( called static translation translation slot or xlate) . For outbound connections, use the static command to specify a global address,cisco ccna knjiga pdf, and it will always be used for translation between the local host and that global address. For inward connections, the static command and the conduit command should be used together to specify an address visible to the external network.

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Latest Cisco CCNA 200-301 Dumps

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