A.将计算机的数字信号转换成模拟信号,以便发送
B.将模拟信号转换成计算机的数字信号,以便接收
C.将计算机数字信号与模拟信号互相转换,以便传输
D.为了上网与接电话两不误
第1题
(71)is a channel' s capacity which directly reflects the data transfer rate of the channel.
(72)functions in a NetWare network which is used to define addressing schemes.
(73)is a network layer device that supports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains.
(74)is the popular LAN developed under the direction of the IEEE802.3.
(75)is a device which enables digital microcomputers to communicate across analog telephone lines.
A.The volume
B.The bandwidth
C.The noise
D.The delay
第2题
(71) is a channel's capacity which directly reflects the data transfer rate of the channel.
(72) functions in a NetWare network which is used to define addressing schemes.
(73) is a network layer device that supports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains.
(74) is the popular LAN developed under the direction of the IEEE802.3.
(75) is a device which enables digital microcomputers to communicate across analog telephone lines.
(71) A.The volume
B.The bandwidth
C.The noise
D.The delay
(72) A.NetBEUI
B.IP
C.IPX
D.NCP
(73) A.The repeater
B.The hub
C.The bridge
D.The router
(74) A.Token Ring
B.Token Bus
C.Ethernet
D.FDDI
(75) A.The repeater
B.The modem
C.The hub
D.The printer
第3题
A (74) is a device that enables the computer to handle sounds.
A.network card
B.video card
C.sound card
D.monitor
第4题
第5题
A(74)is a device that enables the computer to handle sounds.
A.network card
B.video card
C.sound card
D.monitor
第6题
A (74) is a device that enables the computer to handle sounds.
A.network card
B.video card
C.sound card
D.monitor
第7题
A(71) is a device that enables the computer to handle sounds.
A.video card
B.network card
C.sound card
D.card games
第8题
A. Both tables have NULL values.
B. You want all unmatched data from one table.
C. You want all matched data from both tables.
D. You want all unmatched data from both tables.
E. One of the tables has more data than the other.
F. You want all matched and unmatched data from only one table.
第9题
(75)A. storage B. device C. network D. processor
第10题
(75)A. storage B. device C. network D. processor
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