句子组成: in word units介词短语作方式状语修饰 operates_ 翻译:这种设备通常在内韶 (6) It converts the received analog signal to a serial digital data stream 句子组成: convert…to指 转换成…… 翻译:它把接收到的模拟信号转换成串行教字教据流 (7) Data communications equipment(DCE) accepts the serial data stream from th DTE 句子组成: from the d正修饰动词 accept 翻译:数据通信设备(DCE〕从DTE接收串行数据流 Reading comprehension Security is an important consideration in the Internet world. The computer has a way of knowing who you are. Most LANs or mainframes require each user to log in, or sign on to the system. To do this, you should type in your user Id before a prompt. You are then prompted for a password. Passwords are special codes you use to "lock" your account. Obviously you need careful about protecting your password if you are building nuclear power plants or something, but what about the rest of us? a student recently got some help from her friend on email. She gave him her password to a class account, and he wrote it down. Apparently some of his buddies found the password and logged in using the students user ID and password, and sent a very obscene message to the class. The student nearly lost her account, because she had been sloppy with her Change you password regularly! Dont use your dogs name. People will guess it Dont use words in English, people can hook up spell checkers Consider combining words and numbers Answer the following questions according to the article above (8) What does the passage mainly discuss? Security is an important consideration in the Internet world. (9)According to the passage, we know security is an important consideration in the Internet world (10)Why the author thinks that is important to protect your password if you are building nuclear power plant or something? Because th ord may be used by other people. (11)At last, the author give some hints, what are they? They are: first. don't use your dogs name. People will guess it. Second. n. people can hook u combining words and numbers Text 2 Architecture of Computer Networks Exercises句子组成：in word units 介词短语作方式状语修饰 operates 翻译：_这种设备通常在内部以字为单位处理数字信息_____ (6) It converts the received analog signal to a serial digital data stream. 句子组成：convert……to 指将……转换成…… 翻译： 它把接收到的模拟信号转换成串行数字数据流 (7) Data communications equipment (DCE) accepts the serial data stream from the DTE. 句子组成：from the DTE 修饰动词 accept 翻译：数据通信设备（DCE）从 DTE 接收串行数据流 Reading comprehension. Security is an important consideration in the Internet world. The computer has a way of knowing who you are. Most LANs or mainframes require each user to log in, or sign on to the system. To do this, you should type in your user ID before a prompt. You are then prompted for a password. Passwords are special codes you use to “lock” your account. Obviously you need to be careful about protecting your password if you are building nuclear power plants or something, but what about the rest of us? A student recently got some help from her friend on email. She gave him her password to a class account, and he wrote it down. Apparently some of his buddies found the password and logged in using the student’s user ID and password, and sent a very obscene message to the class. The student nearly lost her account, because she had been sloppy with her password. Change you password regularly! Some hints: • Don’t use your dog’s name. People will guess it. • Don’t use words in English, people can hook up spell checkers. • Consider combining words and numbers. Answer the following questions according to the article above. (8) What does the passage mainly discuss? Security is an important consideration in the Internet world. (9) According to the passage, we know security is an important consideration __in the Internet world_. (10) Why the author thinks that is important to protect your password if you are building nuclear power plant or something? Because the password may be used by other people (11) At last, the author give some hints, what are they? They are: first, don’t use your dog’s name. People will guess it. Second, don’t use words in English, people can hook up spell checkers. And last, consider combining words and numbers. Text 2 Architecture of Computer Networks Exercises