句子组成:由逗号分隔的两个独立的句子 翻译:TCPP参考模型是一种传输协议,提供了许多不同的网络服 4. Reading comprehension TCP/IP is the underlying protocol of the Internet today. It is the protocol that helps to split messages up, helps them find their way to the correct destination, then causes them rejoin at the destination. TCP/P is very important but you rarely interact with it directly. All the other os take advantage of it TCP/IP has been with us since the earliest days of the aRPANet. It is showing some signs of age, since it is being used for purposes its designers never imagined! Some other approaches underly Internet protocols are being studied. One notable possibility is a concept called ATM (Asynchronous Transfer Mode) IP is the centerpiece of the TCP/IP protocol stack. Much like the center of an hourglass, IP funnels data to and from the protocols above and below it. It lets an internetwork use many different link layer protocols and allows applications to employ different transport layer protocols In many ways, IP is very simple. However, it has one important advantage over simpler protocols: it hide the differences between the datalink protocols from the transport protocols that end-user applications use. By doing this, it enables you to replace old datal ink technologies with newer and faster technologies without having to change application codes. Thus applications written against a transport protocol interface are portable across a wide range of link layer technologies As the TCP/IP Model Link Layer is identical to the OSI Model Data Link Layer, to avoid terminology confusion, we will use the term"datalink" when referring to a protocol at the TCP/lP Model Link Layer or the OSI Model Data Link Layer Answer the following questions according to the article above. (33) What does the passage mainly discuss? TCP/IP is the underlying protocol of the Internet tod (34) According to the passage, the tCP/lP is very important, but you rarely interact with it dire (35)What is the notable possibility concept? (36)As the TCP/IP Model Link Layer is identical to the OSI Model Data Link Layer, you must avoid terminology confusion (37)Why the author think IP is not very simple? Becauase it has one important advantage over simpler protocols: it hides the differences between the datalink protocols from the transport protocols that end-user applications use. Text 3 Local Area Network Exercises 5. Fill in the blanks with appropriate words according to the text. (38) A LAN is a group of computers and the network devices connected together usually within the same building (39) LANS consist of carefully selected groups of components(hardware and software)句子组成：_由逗号分隔的两个独立的句子 翻译：TCP/IP 参考模型是一种传输协议，提供了许多不同的网络服务。 4. Reading comprehension. TCP/IP is the underlying protocol of the Internet today. It is the protocol that helps to split messages up, helps them find their way to the correct destination, then causes them rejoin at the destination. TCP/IP is very important, but you rarely interact with it directly. All the other protocols take advantage of it. TCP/IP has been with us since the earliest days of the ARPANet. It is showing some signs of age, since it is being used for purposes its designers never imagined! Some other approaches to underly Internet protocols are being studied. One notable possibility is a concept called ATM (Asynchronous Transfer Mode). IP is the centerpiece of the TCP/IP protocol stack. Much like the center of an hourglass, IP funnels data to and from the protocols above and below it. It lets an internetwork use many different link layer protocols and allows applications to employ different transport layer protocols. In many ways , IP is very simple. However, it has one important advantage over simpler protocols: it hides the differences between the datalink protocols from the transport protocols that end-user applications use. By doing this , it enables you to replace old datalink technologies with newer and faster technologies without having to change application codes. Thus applications written against a transport protocol interface are portable across a wide range of link layer technologies. As the TCP/IP Model Link Layer is identical to the OSI Model Data Link Layer, to avoid terminology confusion, we will use the term “datalink” when referring to a protocol at the TCP/IP Model Link Layer or the OSI Model Data Link Layer. Answer the following questions according to the article above. (33) What does the passage mainly discuss? TCP/IP is the underlying protocol of the Internet today. (34) According to the passage, the TCP/IP is very important, but you rarely interact with it directly. (35) What is the notable possibility concept? _____ATM____ (36) As the TCP/IP Model Link Layer is identical to the OSI Model Data Link Layer, you must avoid ___ terminology confusion ___. (37) Why the author think IP is not very simple？ Becauase it has one important advantage over simpler protocols: it hides the differences between the datalink protocols from the transport protocols that end-user applications use. Text 3 Local Area Network Exercises 5. Fill in the blanks with appropriate words according to the text. (38) __A LAN__ is a group of computers and the network devices connected together usually within the same building. (39) LANs consist of carefully selected groups of components (hardware and software)