A.常用的技術(shù)規(guī)定
B.特殊的技術(shù)要求
C.統(tǒng)一的技術(shù)要求
D.強(qiáng)制的技術(shù)要求
第1題
A.Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)
B.Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)
C.Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN)
D.Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN)
第2題
從下面提供的答案中選出應(yīng)填入下列英文語句中______內(nèi)的正確答案。
A local-area network(LAN) is a communications network that(1)a variety of device and provides a(2)for information exchange among those devices. The scope of the LAN is small typically a single building or a cluster ofbuildings. The LAN is usually owned by the same organization that owns the(3)devices. The internal data rate of LAN is at least several Mbps. The basic Of LAN communication is broadcasting. At each station, there is a transmitter/ receiver that communicates over a(4)shared by other stations.A transmission from any one station is(5)to and received by all other stations.
第3題
Fast(66)is also referred to as 100BASE-T or 802.3u and is a communications(67)that enables computers on a local-area network to share information with one another at(68)of 100 million bits per second instead of the standard 10 million BIT/S。
A.Ethernet
B.Inernet
C.network
D.net
第4題
The firewall device is a()system for connecting a computer network to other computer network.
A.hardware
B.software
C.security
D.I/O
第5題
The firewall device is a()system for connecting a computer network to other computer network.
A.hardware
B.software
C.security
D.I/O
第6題
A.Network security
B.Content networking
C.Network management
D.Campus local-area networking
第7題
A、局域網(wǎng) Local Area Network;
B、廣域網(wǎng) Wide Area Network;
C、城域網(wǎng) Metropolitan Area Network;
D、以太網(wǎng) Ethernet;
第8題
A.Connects client devices wireless protocol
B.Crosses metropolitan, regional, or national boundaries
C.Limited in a single building, a group of buildings, or even a single room
D.Encompasses an entire city or metropolitan area and connects multiple local-area networks (LANs)
第9題
A.Digital subscriber line (DSL)
B.Optical network
C.Wireless local-area network (WLAN)
D.Internet Protocol (IP) telephony
第10題
The future global communications network will be completely free of______.
A.a(chǎn)ny breakdown
B.costs
C.towers and masts
D.manual operation
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