ccna professional

ccna professional

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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. (8) Point-to-point communication: online chat with the controlled terminal in the form of a chat room. UDP support low 10) Trusted recovery (5) Enter the ministry-level business decentralized code, and write the business decentralized code into the ministry-level business master control key fob. The ministerial-level business master control key card stores the business decentralized code in ciphertext binary format. 1.4.5 Information leakage or loss Retransmission 3.4 Encryption technology of computer network 6) Review 6) Perform dynamic site monitoring TCP 5.4.4 Subnet filtering firewall structure 1. Overview (7) Allow mail access. Allow Internet users and internal users to access the mail server through the SMTP protocol. The sender generates a pair of keys, uses the public key to encrypt the secret key ( control word ) , and then transmits it to the receiver through the network. RETRID The support of many large companies such as Microsoft has become the de facto industry standard. (2) Attack File: its performance as delete files, modify the file name, replace the contents of the file, delete the part of the program on behalf of the codes. Especially suitable for data transmitted via the Internet. The security of the RSA algorithm is based on the difficulty of decomposing large numbers (in terms of computer processing power and processing time ) . Among the commonly used public key algorithms, RSA is unique in that it can perform digital signature and key exchange operations. Operating system concept and safety assessment 5) Continuously improve the security performance of the server system Each interface on the PIX firewall must be configured with an IP address. After configuring the IP address and mask, usually use the show ip command to view which addresses are assigned to the network interface. If you find a mistake,ccna professional, you should use the positive information to re-enter the correct command. Table . 5 - . 8 describes the ip address option and command parameters, the command syntax is as follows.

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