cisco ccna exam answers

cisco ccna exam answers

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When you want to use a specific command, you must be in the appropriate mode ( for specific commands for ) , to access that particular command, PIX provides 4 Zhong management access mode, see Table 5 - 9 . This is the most basic way of hiding. Type C : 255.255.255.0 Such as the command: Ping-165535< IP address of the target host >. Enter config terminal at the prompt pixfirewall# (2) global command (1) Grasp the method to check for CIH virus infection . This is not a new method, just a change in other technologies. Instead of sending TCP probe packets directly , it divides the packets into two smaller IP segments. In this way, a TCP header is divided into several data packets, so that the filter is difficult to detect. But you must be careful, some programs will have trouble handling these small packets. 1. Measures to prevent hacker intrusion Just use a simple parameter ($DATA) to see the original ASP program. (4) Using the service provided by the victim host or the flaws in the transmission protocol to repeatedly issue specific service requests at high speed, so that the victim host cannot process all normal requests in time. Technical mechanisms used to protect network information security E-mail is transmitted at the speed of electronic streaming, which is very fast. The user ( sender ) sends it to a friend ( recipient ) in the United States in Shenzhen , and the other party can receive it in a few minutes. On the 15th ,cisco ccna exam answers, NBS announced its acceptance of this proposal as the Federal Information Processing Standard No. 46 Data Encryption Standard (Data Encryption Standard) , that is, DES was officially promulgated for use by the business community and non-defense government agencies. The main purpose of building a network firewall is as follows. 90 ms 202.107.197.98 It is to snoop on the secrets or privacy of others, and does not intend to steal any data and destroy the system. Some other hackers for a variety of reasons, such as PETTY, revenge, protests invasion and tampering with the contents of the target site, humiliate each other. For example , after the US-led NATO bombed our embassy in South Africa in May 1999 , a group of hackers who claimed to be "justice" broke into the White House, the US Embassy in China, the US Department of Defense, and the US Air Force and other official websites, tampering with their homepages. , In protest. The third category is malicious attacks and destruction, which are the most harmful and account for the largest proportion. Some seek illegal economic benefits, such as illegally withdrawing others’ bank deposits by embezzling accounts, or blackmailing individuals, groups, and countries, causing heavy economic losses to individuals, groups, and countries, and some deliberately destroying the other’s computer systems. Service for political, military, and economic purposes. System, an important program data can be tampered with, destroyed, or even lost, resulting in a system crash, paralyzed business, the results could be disastrous.

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Latest Cisco CCNA 200-301 Dumps

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