Internet is a global network that
connects other computer networks, together with software and protocols for
controlling the movement of data. The Internet, often referred to as "the Net",
was initiated in 1969 by a group of universities and private research groups
funded by the US Department of Defense. It now covers almost every country in
the world. Its organization is informal and deliberately nonpolitical its
controllers tend to concentrate on technical aspects rather than on
administrative control. The Internet offers users a number of
basic services including’ data transfer, electronic mail, and the ability to
access information in remote databases. A notable feature is the existence of
user groups, which allow people to exchange information and debate specific
subjects of interest. In addition, there am a number of high-level services. For
exampl A. was initiated by the U.S.Department of Defense in 1969 B. was only able to connect computers into networks at its beginning C. has not any kind of organization behind it at all D. works independently of any governmental control [单项选择]
3 The Internet is a global network that connects other computer networks, together with software and protocols for controlling the movement of data. The Internet, often re ferred to as "the Net", was initiated in 1969 by a group of universities and private re search groups funded by the US Department of Defense. It now covers almost every country in the world. Its organization is informal and deliberately nonpolitical; its controllers tend to concentrate on technical aspects rather than on administrative control. The Internet offers users a number of basic services including data transfer, electronic mail, and the ability to access information in remote databases. A notable feature is the ex istence of user groups, which allow people to exchange information and debate specific subjects of interest. In addition, there are a number of high-level services. For example, MBONE allows the transmission of messages to more than one destinati A. is a high level service provided by the Internet B. is the most notable feature with the Internet C. is a basic function performed by the Internet D. can only be achieved by the Internet [单项选择]The Internet is a global network that connects other computer networks, together with software and protocols for controlling the movement of data. The Internet, often referred to as "the Net", was initiated in 1969 by a group of universities and private research groups funded by the US Department of Defense. It now covers almost every country in the world. Its organization is informal and deliberately nonpolitical; its controllers tend to concentrate on technical aspects rather than on administrative control.
The Internet offers users a number of basic services including data transfer, electronic mail, and the ability to access information in remote databases. A notable feature is the existence of user groups, which allow people to exchange information and debate specific subjects of interest. In addition, there are a number of high-level services. For example, MBONE allows the transmission of messages to more than one destination. It is used in videoconferencing. The World Wide W A. was initiated by the US Department of Defense in 1969 B. was only able to connect computers into networks at its beginning C. has not any kind of organization behind it at all D. works independently of any governmental control 我来回答: 提交
|