题目内容
（请给出正确答案）
（66） is a device that converts images to digital format.
（66）
A. Copier
B. Printer
C. Scanner
D. Display
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are lonely given for freight which is prepackaged into an aircraft Unit Load Device that can be loaded directly into the aircraft.
A．Minimum Charges
B．Bulk Unitization Rates
C．Class Rates
D．Contract FAK Rates
A typical peripheral device has(66)which the processor uses to select the device's internal registers.
A．data
B．a control
C．a signal
D．an address
The(66)is a channel's capacity which directly reflects the data transfer rate of the channel.
(67)functions in a NetWare network which is used to define addressing schemes.
The(68)is a network layer device that supports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains.
(69)is the popular LAN developed under the direction of the IEEE802.3.
The(70 is a device which enables digital microcomputers to communicate across analog telephone lines.
A．volume
B．bandwidth
C．noise
D．delay
WAP uses(66)which includes the Handheld Device Markup Language(HDML)developed by Phone.com. WML can also trace its roots to eXtensible Markup Language(XML). A markup language is a way of adding information to your(67)that tells the device receiving the content what to do with it. The best known markup language is Hypertext Markup Language.(68)HTML, WML is considered a meta. language. Basically, this means that in addition to providing predefined(69), WML lets you design your own markup language(70). WAP also allows the use of standard Internet protocols such as UDP, IP and XML.
A．HTML
B．XML
C．DML
D．WML
● (66) is a channel's capacity which directly reflects the data transfer rate of the channel. (67) functions in a NetWare network which is used to define addressing schemes. (68) is a network layer device that suports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains. (69) 。is the popular LAN develped under the direction of the IEEE 802.3. (70) is a device which enables digital microcomputers to communicate across analog telephone lines.
(66) A．The volume
B．The bandwidth
C．The noise
D．The delay
(67) A．NetBEUI
B．IP
C．IPX
D．NCP
(68) A．The repeater
B．The hub
C．The bridge
D．The router
(69) A．Token Ring
B．Token Bus
C．Ethernet
D．FEEI
(70) A．The repeater
B．The modem
C．The hub
D．The printer
A．directly
B．immediately
C．instantly
D．snapshot
Flow control is a function that prevents network congestion by ensuring that(66)do not over-whelm(67)with data. There are three commonly used methods for handling network congestion.(68)is used by network devices to temporarily store bursts of excess data in memory until they can be processed.(69)are used by receiving devices to help prevent their buffers from overflowing.(70)is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted.
A．transmitting devices
B．transmitted devices
C．receiving devices
D．received devices
The kernel is the(66)of an operating system such as Windows98, Windows NT, Mac OS or Unix. The kernel provides basic services for the other parts of the operating system,(67)it possible for it to run several programs at once(multitasking), read and write files and connect to networks and peripherals. Applications and utility programs use the services provided by the kernel to provide practical business functionality.
In operating systems such as Windows or most versions of Unix, the kernel(68)everything except application and utility programs.
In microkernel operating systems such as Digital Unix and Apples forthcoming Mac OS Server, the kernel(69)supports only multitasking and memory management. Other services such as applications, utilities and the user interface support device drivers, API and graphics which all(70)outside the microkernel.
A．nucleus
B．center
C．core
D．heart
(66) is a one-way function that takes an arbitrarily long piece of plaintext and from itcomputes a fixed-length bit string.
(67) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection.
(68) is an approach preferred by cable TV providers.In this solution the fiber terminates at an optoelectrical converter and the final segment is a shared coaxial cable.
(69) is a device used to connect two separate network that use different communicationprotocol.
(70) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.
(66) A．MD
B．RSA
C．DES
D．MIB
(67) A．RTP
B．RTTP
C．FTP
D．NNTP
(68) A．ADSL
B．FTTC
C．HFC
D．FTTH
(69) A．Router
B．Gateway
C．Bridge
D．hub
(70) A．NNI
B．NRZ
C．NAK
D．NVT
● Every valid character in a computer that uses even（66） must always have an even number of 1 bits.
● The maximum number of data that can be expressed by 8 bits is（67） .
● Integration （68） is the process of verifying that the components of a system work together as described in the program design and system design specifications.
● GIF files are limited to a maximum of 8 bits/pixel, it simply means that no more than 256 colors are allowed in （69） .
● Computer （70） is a complex consisting of two or more connected computing units, it is used for the purpose of data communication and resource sharing.
（66）
A. parity
B. check
C. test
D. compare
（67）
A. 64
B. 128
C. 255
D. 256
（68）
A. trying
B. testing
C. checking
D. coding
（69）
A. an image
B. a file
C. a window
D. a page
（70）
A. storage
B. device
C. processor
D. network
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