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局域网英文为LAN(Local Area Network)。()
局域网英文为LAN（Local Area Network)。（)
A.正确
B.错误
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题目内容
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A.正确
B.错误
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更多“局域网英文为LAN(Local Area Network)。…”相关的问题
从供选择的答案中选出应填入下列英文语句中______内的正确答案。
PCs originated as stand-alone(1), however,in recent years many have been(2)to Local Area Networks (LANs). In a LAN, the data and usually the user application reside on the File Server, a PC running a special Network Operating System (NOS) such as Novell's NetWare or Microsoft's LAN Manager. The File Server manages the LAN users' shared access to data on its hard(3)and frequently provides access to other shared resources, such as printers. While a LAN enables users of PC-based databases to share(4)data files, it doesn't significantly change how the DBMS works; all the actual data(5)is still performed on the PC running the database application.
供选择的答案：
(1) calculating (2) common (3) connected (4) disks (5) displayed
(6) systems (7) printers (8) processing (9) some (10) workstations
A recent development is the local area network (LAN).【21】its name implies, it【22】a local area—possibly as small as a single room, typically an area like an university campus or the premises of a particular business. Local area networks were developed to【23】a need specific to microcomputers—the sharing of expensive resources. Microcomputers are cheap,【24】highcapacity disc stores, fast and/or good quality printers, etc. are expensive. The object of the LAN is to allow【25】microcomputers shared access to these expensive resources. Since the microcomputers are【26】, it is a necessary feature of a LAN that the method of connection to the network, and the network hardware【27】, must also be cheap.
A local area network links a number of computers and a number of sewers【28】provide communal facilities, e. g. file storage. (A server usually includes a small microprocessor for control purposes.) The computers and servers are known【29】stations. There are two methods of【30】in common use, tings and broadcast networks.
In the ring method(often called a Cambridge Ring)all the stations are linked in a ring,【31】includes one special station, the monitor station.
In broadcast networks, all the stations are【32】to a single linear cable (usually co-ax cable), and any transmission will be received by all stations.
【33】technology is used, local area networks are a development of the greatest importance.【34】as programming is simplified by an approach that thinks in terms of small procedures or programs, each doing a well-defined job, the computer system of tomorrow is likely to be【35】lots of small systems, each doing a specific job, linked by a local area network.
(41)
A．As
B．Like
C．Since
D．Because
从供选择的答案中选出应填入下面一段英文中______内的正确答案。
A brouter is a network bridge and a router combined in a single product. A bridge is a device that connects one local area network (LAN) to(1)local area network that uses the same protocol (for example,(2)or Token Ring). If a data unit on one LAN is intended for a(3)on an interconnected LAN, the bridge forwards the data unit to that LAN; otherwise, it passes it along on the same(4). A bridge usually offers only one path to a given interconnected LAN. A router connects a network to one or more other(5)that are usually part of a wide area network (WAN) and may(6)a number of paths out to destinations on those networks. A router therefore needs to have(7)information than a bridge about the interconnected networks. It(8)a routing table for this information. Since a given outgoing data unit or packet from a computer may be intended for an(9)on the local network, on an interconneted LAN, or the wide area network, it makes sense to have a single unit that(10)all data units and forwards them appropriately.
供选择的答案：
1．more 2．LAN 3．Ethernet 4．address 5． offer
6．destination 7．consults 8．another 9．networks 10．examines
局域网的英文缩写是
(A) WAM (B) LAN (C) MAN (D) Internet
打开考生文件夹下的Word文档WDA051.doc，其内容如下：
【WDA051.doc文档开始】
常用的网罗互联设备
常用的网罗互联设备主要有中继器、网桥、路由器和网关。
中继器比较简单，它只对传送后变弱的信号进行放大和转发，所以只工作在同一个网罗内部，起到延长介质长度的作用。它工作在OSI参考模型的第一层(物理层)。
网桥是连接不同类型局域网的桥梁，它工作在OSI模型的第二层(链路层)。它能对802.3以太网、802.4令牌总线网和802.5令牌环网这几种不同类型的局域网实行网间桥接，实现互相通信；但又能有效地阻止各自网内的通信不会流到别的网罗，避免了“广播风暴”。
路由器是使用最广泛的能将异形网连接在一起的互联设备。它运行在OSI模型的第三层(网罗层)，不但能实现LAN与LAN的互联，更能解决体系结构差别很大的LAN与WAN的互联。
网关运行在OSI模型的传送层及其以上的高层，它能互联各种完全不同体系结构的网罗。它通常以软件形式存在，比路由器有更大的灵活性，但也更复杂、开销更大。
【WDA051.doc文档结束】
按要求对文档进行编辑、排版和保存：
(1)将文中所有错词“网罗”替换为“网络”；将标题段(“常用的网络互联设备”)设置为三号红色空心黑体、居中、字符间距加宽2磅。
(2)将正文各段文字(“常用的网络互连设备……开销更大。”)的中文设置为小四号宋体、英文设置为小四号Bookman Old Style字体；各段落悬挂缩进0.8厘米、段前间距8磅。
(3)在正文中第一次出现的“OSI”一词后添加脚注“表示开放系统互连模型”；将文档页面的纸型设置为“16开(18.4×26厘米)”、上下边界各为3厘米；并以原文件名保存文档。
